1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) March 1, 2001 -------------------------------- NRG Energy, Inc. - -------------------------------------------------------------------------------- (Exact name of registrant as specified in its charter) Delaware 001-15891 41-1724239 - -------------------------------------------------------------------------------- (State or other jurisdiction (Commission (IRS Employer of incorporation) File Number) Identification No.) 901 Marquette Avenue, Suite 2300, Minneapolis, Minnesota 55402-3265 - -------------------------------------------------------------------------------- (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code (612) 373-5300 ----------------------------- None - -------------------------------------------------------------------------------- (Former name and former address, if changed since last report.)

2 ITEM 5. OTHER EVENTS. In December 2000, NRG Energy, Inc. (the "Company") filed, pursuant to Rule 415 under the Securities Act of 1933 (the "Act"), a registration statement on Form S-3 (File No. 333-52508), which was declared effective on January 29, 2001. On February 16, 2001, the Company filed a Prospectus Supplement, dated February 16, 2001, relating to the offering of up to $230,000,000 of the Company's Equity Units. In this connection, the Company is filing certain exhibits as part of this Form 8-K. See "Item 7. Exhibits." ITEM 7. EXHIBITS. The following exhibits are filed with reference to the Registration Statement on Form S-3 (Registration No. 333-52508) of NRG Energy, Inc.: Exhibit No. Description - ----------- ----------- 4.1 Form of Supplemental Indenture to be used in connection with the issuance of the Debentures. 4.2 Form of Debenture (included in Exhibit 4.1). 4.3 Form of Purchase Contract Agreement between NRG Energy, Inc. and the Purchase Contract Agent to be named therein. 4.4 Form of Corporate Unit Certificate (included as Exhibit A to Exhibit 4.3). 4.5 Form of Pledge Agreement among NRG Energy, Inc., the Collateral Agent, and the Unit Agent, each to be named therein. 4.6 Form of Remarketing Agreement among NRG Energy, Inc., the Purchase Contract Agent, and the Remarketing Agent, each to be named therein. 25.1 Statement of Eligibility of Trustee.

3 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. NRG Energy, Inc. -------------------------------------------- (Registrant) Date March 1, 2001 By: /s/ Brian Bird -------------------------- -------------------------------------------- (Signature)* Name: Brian Bird Title: Vice President and Treasurer *Print name and title of the signing officer under this signature INDEX TO EXHIBITS Exhibit No. Description - ----------- ----------- 4.1 Form of Supplemental Indenture to be used in connection with the issuance of the Debentures. 4.2 Form of Debenture (included in Exhibit 4.1). 4.3 Form of Purchase Contract Agreement between NRG Energy, Inc. and the Purchase Contract Agent to be named therein. 4.4 Form of Corporate Unit Certificate (included as Exhibit A to Exhibit 4.3). 4.5 Form of Pledge Agreement among NRG Energy, Inc., the Collateral Agent, and the Unit Agent, each to be named therein. 4.6 Form of Remarketing Agreement among NRG Energy, Inc., the Purchase Contract Agent, and the Remarketing Agent, each to be named therein. 25.1 Statement of Eligibility of Trustee.

1 EXHIBIT 4.1 --------------------------------------------------- FIRST SUPPLEMENTAL INDENTURE DATED AS OF , 2001 -------------- BETWEEN NRG ENERGY, INC. AS ISSUER AND [------------------------------] AS TRUSTEE ---------------------------------------------------

2 Table of Contents Page ARTICLE I DEFINITIONS...............................................................................1 Section 1.1 Definition of Terms............................................................1 ARTICLE II GENERAL TERMS AND CONDITIONS OF THE DEBENTURES...........................................4 Section 2.1 Designation and Principal Amount...............................................4 Section 2.2 Maturity.......................................................................4 Section 2.3 Form, Payment and Appointment..................................................4 Section 2.4 Global Debentures..............................................................5 Section 2.5 Interest.......................................................................6 ARTICLE III REDEMPTION OF THE DEBENTURES............................................................7 Section 3.1 Tax Event Redemption...........................................................7 Section 3.2 Redemption Procedures for Debentures...........................................8 Section 3.3 No Sinking Fund................................................................8 Section 3.4 Option to Put Debentures upon Failed Secondary Remarketing.....................8 Section 3.5 Repurchase Procedure for Debentures............................................9 ARTICLE IV EXPENSES.................................................................................9 Section 4.1 Payment of Expenses............................................................9 ARTICLE V NOTICE...................................................................................10 Section 5.1 Notice by the Company.........................................................10 ARTICLE VI FORM OF DEBENTURE.......................................................................10 Section 6.1 Form of Debenture.............................................................10 ARTICLE VII ORIGINAL ISSUE OF DEBENTURES...........................................................21 Section 7.1 Original Issue of Debentures..................................................21 i

3 ARTICLE VIII MISCELLANEOUS.........................................................................21 Section 8.1 Ratification of Indenture.....................................................21 Section 8.2 Trustee Not Responsible for Recitals..........................................21 Section 8.3 New York Law to Govern........................................................22 Section 8.4 Separability..................................................................22 Section 8.5 Counterparts..................................................................22 Section 8.6 Provisions of Base Indenture Not Applicable...................................22 ARTICLE IX REMARKETING.............................................................................22 Section 9.1 Initial Remarketing Procedures................................................22 Section 9.2 Secondary Remarketing Procedures..............................................26 ii

4 FIRST SUPPLEMENTAL INDENTURE, dated as of _______________, 2001 (the "First Supplemental Indenture"), between NRG Energy, Inc., a corporation duly organized and existing under the laws of the State of Delaware (the "Company"), and [_______________________], as trustee (the "Trustee"). WHEREAS, the Company executed and delivered the Indenture dated as of _____________, 2001 (the "Base Indenture") to the Trustee to provide for the issuance of the Company's debentures, notes, bonds or other evidence of indebtedness (the "Securities"), to be issued from time to time in one or more series as might be determined by the Company under the Base Indenture; and WHEREAS, pursuant to the terms of the Base Indenture, the Company desires to provide for the establishment of a new series of its Securities to be known as its _____% Senior Debentures due 2006 (the "Debentures"), the form and terms of such Debentures and the terms, provisions and conditions thereof to be set forth as provided in the Base Indenture and this First Supplemental Indenture (together, the "Indenture"); and WHEREAS, the Company has requested that the Trustee execute and deliver this First Supplemental Indenture and all requirements necessary to make this First Supplemental Indenture a valid, binding and enforceable instrument in accordance with its terms, and to make the Debentures, when executed, authenticated and delivered by the Company, the valid, binding and enforceable obligations of the Company, have been done and performed, and the execution and delivery of this First Supplemental Indenture has been duly authorized in all respects. NOW THEREFORE, in consideration of the purchase and acceptance of the Debentures by the Holders thereof, and for the purpose of setting forth, as provided in the Base Indenture, the form and terms of the Debentures, the Company covenants and agrees with the Company as follows: ARTICLE I DEFINITIONS Section 1.1 Definition of Terms Unless the context otherwise requires: (a) a term defined in the Base Indenture has the same meaning when used in this First Supplemental Indenture; 1

5 (b) a term defined anywhere in this First Supplemental Indenture has the same meaning throughout; (c) the singular includes the plural and vice versa; (d) headings are for convenience of reference only and do not affect interpretation; (e) the following terms have the meanings given to them in the Purchase Contract Agreement (i) Applicable Principal Amount, (ii) Authorized Newspaper; (iii) Cash Settlement; (iv) Clearing Agency; (v) Clearing Agency Participant; (vi) Corporate Units; (vii) Initial Remarketing; (viii) Initial Remarketing Date; (ix) Purchase Contract Agent (x) Quotation Agent; (xi) Redemption Price; (xii) Reset Agent; (xiii) Reset Announcement Date; (xiv) Reset Rate; (xv) Reset Spread; (xvi) Secondary Remarketing; (xvii) Secondary Remarketing Date; (xviii) Tax Event; (xix) Treasury Portfolio; (xx) Treasury Portfolio Purchase Price; (xxi) Treasury Units; (xxii) Two-Year Benchmark Treasury; (xxiii) Two and One-Quarter Year Benchmark Treasury; and (xxiv) Underwriting Agreement; (f) the following terms have the meanings given to them in this Section 1.1(f): "Coupon Rate" shall have the meaning set forth in Section 2.5. "Custodial Agent" shall have the meaning set forth in the Pledge Agreement. "Debentures" shall have the meaning specified in Section 2.1. "Debenture Repayment Price'" shall have the meaning set forth in Section 3.4. "Failed Initial Remarketing" shall have the meaning set forth in Section 9.1(g). "Failed Secondary Remarketing" shall have the meaning set forth in Section 9.2(h). "Global Debentures" shall have the meaning set forth in Section 2.4. 2

6 "Maturity Date" shall have the meaning specified in Section 2.2. "Pledge Agreement" means the Pledge Agreement dated as of ____________, 2001 among the Company, __________________________, as collateral agent (the "Collateral Agent"), custodial agent and securities intermediary and ______________________________, as purchase contract agent and attorney-in-fact. "Purchase Contract" shall have the meaning set forth in the Purchase Contract Agreement. "Purchase Contract Agreement" means the Purchase Contract Agreement dated as of ________________, 2001, among the Company and ______________, as purchase contract agent. "Purchase Contract Settlement Date" means _________________, 2004. "Put-Option" shall have the meaning set forth in Section 3.4. "Put-Option Exercise Date" shall have the meaning set forth in Section 3.4. "Regular Record Date" means, with respect to any Interest Payment Date for the Debentures, the close of business on the first day of the month in which such Interest Payment Date falls. "Remarketing Agent" means ______________________________________ or any successor thereto or replacement Remarketing Agent under the Remarketing Agreement. "Remarketing Agreement" means the Remarketing Agreement, dated as of __________, 2001, among the Company, __________________________as remarketing agent and _____________________, as purchase contract agent and attorney-in-fact. "Reset Effective Date" means (i) ________, 2003 in case the interest rate is reset on the Initial Remarketing Date, or (ii) the Purchase Contract Settlement Date, in case the interest rate is reset on the Secondary Remarketing Date. 3

7 The terms "First Supplemental Indenture," "Base Indenture," and "Debentures" shall have the respective meanings set forth in the recitals to this First Supplemental Indenture and the paragraph preceding such recitals. ARTICLE II GENERAL TERMS AND CONDITIONS OF THE DEBENTURES Section 2.1 Designation and Principal Amount. There is hereby authorized a series of Securities designated the ___% Senior Debentures due 2006, (the "Debentures") limited (except as otherwise provided in Article II of the Indenture) in aggregate principal amount to $200,000,000 (or, $230,000,000, if the Underwriters' over-allotment option is exercised in full). The Debentures may be issued from time to time upon written order of the Company for the authentication and delivery of Debentures pursuant to Section 2.2 of the Base Indenture. Section 2.2 Maturity. The date upon which the Debentures shall become due and payable at final maturity, together with any accrued and unpaid interest, is ___________, 2006 (the "Maturity Date"). Section 2.3 Form, Payment and Appointment Except as provided in Section 2.4, the Debentures shall be issued in fully registered certificated form without interest coupons, bearing identical terms. Principal of and premium, if any, and interest on the Debentures will be payable, the transfer of such Debentures will be registrable and such Debentures will be exchangeable for Debentures bearing identical terms and provisions at the office or agency of the Company maintained for such purpose as described below; provided, however, that payment of interest may be made at the option of the Company by check mailed to the Holder at such address as shall appear in the Securities Register or by wire transfer to an account appropriately designated by the Holder entitled to payment. The Company hereby designates the Borough of Manhattan, The City of New York as the place of payment ("Place of Payment") for the Debentures, and the office or agency maintained by the Company in such Place of Payment for the purposes 4

8 contemplated by this Section 2.3 shall initially be the Corporate Trust Office of the Trustee in c/o _____________________________________________. The Security Registrar, transfer agent and Paying Agent for the Debentures shall be ____________________________. The Debentures shall be issuable in denominations of $25 and integral multiples of $25 in excess thereof. The Debentures may be issued, in whole or in part, in permanent global form and, if issued in permanent global form, the U.S. Depositary shall be The Depository Trust Company or such other depositary as any officer of the Company may from time to time designate. Section 2.4 Global Debentures. (a) Unless and until it is exchanged for the Debentures in registered form, one or more global Debentures in principal amount equal to the aggregate principal amount of all outstanding Debentures ("Global Debentures") may be transferred, in whole but not in part, only to the Clearing Agency or a nominee of the Clearing Agency, or to a successor Clearing Agency selected or approved by the Company or to a nominee of such successor Clearing Agency. (b) If at any (i) time the Clearing Agency notifies the Company that it is unwilling or unable to continue as a Clearing Agency for the Global Debentures and no successor Clearing Agency shall have been appointed within 90 days after such notification, (ii) the Clearing Agency at any time ceases to be a clearing agency registered under the Securities Exchange Act of 1934 at any time the Clearing Agency is required to be so registered to act as such Clearing Agency and no successor Clearing Agency shall have been appointed within 90 days after the Company becoming aware of the Clearing Agency's ceasing to be so registered, (iii) the Company, in its sole discretion, determines that the Global Debentures shall be so exchangeable or (iv) there shall have occurred and be continuing an Event of Default, the Company will execute, and subject to Article II of the Base Indenture, the Trustee, upon written notice from the Company, will authenticate and deliver the Debentures in definitive registered form without coupons, in authorized denominations, and in an aggregate principal amount equal to the principal amount of the Global Debenture in exchange for such Global Debenture. 5

9 Upon exchange of the Global Debenture for such Debentures in definitive registered form without coupons, in authorized denominations, the Global Debenture shall be cancelled by the Trustee. Such Debentures in definitive registered form issued in exchange for the Global Debenture shall be registered in such names and in such authorized denominations as the Clearing Agency, pursuant to instructions from its direct or indirect participants or otherwise, shall instruct the Trustee. The Trustee shall deliver such Securities to the Clearing Agency for delivery to the Persons in whose names such Securities are so registered. Section 2.5 Interest. (a) Each Debenture will bear interest initially at the rate of ___% per annum (the "Coupon Rate") from the original date of issuance through and including the day immediately preceding the Reset Effective Date and at the Reset Rate thereafter until the principal thereof is paid or duly made available for payment and shall bear interest, to the extent permitted by law, compounded quarterly, on any overdue principal and premium, if any, and on any overdue installment of interest at the Coupon Rate through and including the day immediately preceding the Reset Effective Date and at the Reset Rate thereafter, payable quarterly in arrears on __________, __________, ___________ and _____________ of each year (each, an "Interest Payment Date") commencing on _____________, 2001, to the Person in whose name such Debenture, or any predecessor Debenture, is registered at the close of business on the Regular Record Date for such interest installment. (b) The interest rate on the Debentures will be reset on the Initial Remarketing Date to the applicable Reset Rate (which Reset Rate will be effective on and after _________, 2003) except in the event of a Failed Initial Remarketing. In the event of a Failed Initial Remarketing, the interest rate on the Debentures will be reset on the Secondary Remarketing Date to the applicable Reset Rate (which Reset Rate will be effective on and after the Purchase Contract Settlement Date). On the applicable Reset Announcement Date, the applicable Reset Spread and the Two-Year Benchmark Treasury or Two and One-Quarter Year Benchmark Treasury, as applicable, will be announced by the Company. On the Business Day immediately following such Reset Announcement Date, the Holders of Debentures will be notified of such Reset Spread and Two-Year Benchmark Treasury or Two and One-Quarter Year Benchmark Treasury, as applicable, by the Company. Such 6

10 notice shall be sufficiently given to such Holders of Debentures if published in an Authorized Newspaper. (c) Not later than seven calendar days nor more than 15 calendar days immediately preceding the applicable Reset Announcement Date, the Company will request that the Clearing Agency or its nominee (or any successor Clearing Agency or its nominee) notify the Holders of Debentures of such Reset Announcement Date and, in the case of a Secondary Remarketing, the procedures to be followed by such holders of Debentures wishing to settle the related Purchase Contracts with separate cash on the Business Day immediately preceding the Purchase Contract Settlement Date. (d) The amount of interest payable for any period will be computed on the basis of a 360-day year consisting of twelve 30-day months. Except as provided in the following sentence, the amount of interest payable for any period other than a full quarterly period for which interest is computed, will be computed on the basis of the actual number of days elapsed in such a 90-day period. In the event that any date on which interest is payable on the Debentures is not a Business Day, then payment of interest payable on such date will be made on the next succeeding day which is a Business Day (and without any interest or other payment in respect of any such delay), except that, if such Business Day is in the next succeeding calendar year, such payment shall be made on the immediately preceding Business Day, in each case with the same force and effect as if made on such date. ARTICLE III REDEMPTION OF THE DEBENTURES Section 3.1 Tax Event Redemption. If a Tax Event shall occur and be continuing, the Company may, at its option, redeem the Debentures in whole (but not in part) at any time at a price per Debenture equal to the Redemption Price. Installments of interest on Debentures which are due and payable on or prior to the date of redemption (the "Tax Event Redemption Date") will be payable to the Holders of the Debentures registered as such at the close of business on the Regular Record Date. If, following the occurrence of a Tax Event prior to the Purchase Contract Settlement Date, the Company exercises its option to redeem the Debentures, the Company shall appoint the Quotation Agent to assemble the Treasury Portfolio in consultation with the Company. Notice of any redemption will be mailed at least 30 days but not more than 60 days before the Tax 7

11 Event Redemption Date to each registered Holder of the Debentures to be repaid at its registered address. Unless the Company defaults in payment of the Redemption Price, on and after the Tax Event Redemption Date interest shall cease to accrue on the Debentures. Section 3.2 Redemption Procedures for Debentures. Payment of the Redemption Price to each Holder of Debentures shall be made by the Company, no later than 12:00 noon, New York City time, on the Tax Event Redemption Date, by check or wire transfer in immediately available funds at such place and to such account as may be designated by each such Holder of Debentures, including the Trustee or the Collateral Agent, as the case maybe. If the Trustee holds immediately available funds sufficient to pay the Redemption Price of the Debentures, then, on such Tax Event Redemption Date, such Debentures will cease to be outstanding and interest thereon will cease to accrue, whether or not such Debentures have been received by the Company, and all other rights of the Holder in respect of the Debentures shall terminate and lapse (other than the right to receive the Redemption Price upon delivery of such Debentures but without interest on such Redemption Price). Section 3.3 No Sinking Fund. The Debentures are not entitled to the benefit of any sinking fund. Section 3.4 Option to Put Debentures upon Failed Secondary Remarketing. If a Failed Secondary Remarketing (as described in Section 5.4(b) of the Purchase Contract Agreement and incorporated herein by reference) has occurred, each holder of Debentures who holds such Debentures on the day immediately following the Purchase Contract Settlement Date shall have the right (the "Put Option") on the Business Day immediately following the Purchase Contract Settlement Date, to put such Debentures to the Company on _______, 2004 (the "Put Option Exercise Date"), upon at least three Business Days prior notice, at a repayment price equal to the principal amount of such Debentures plus an amount equal to the accrued and unpaid interest thereon to the date of payment (the "Debenture Repayment Price"). 8

12 Section 3.5 Repurchase Procedure for Debentures. (a) In order for the Debentures to be repurchased on the Put Option Exercise Date, the Trustee must receive on or prior to 5:00 p.m. New York City time on the third Business Day immediately preceding the Put Option Exercise Date, at its Corporate Trust Office or at an office or agency maintained by the Company in the Borough of Manhattan, The City of New York as contemplated by Section 2.3 hereof, the Debentures to be repurchased with the form entitled "Option to Elect Repayment" on the reverse of or otherwise accompanying such Debentures duly completed. Any such notice received by the Trustee shall be irrevocable. All questions as to the validity, eligibility (including time of receipt) and acceptance of the Debentures for repayment shall be determined by the Company, whose determination shall be final and binding. (b) Payment of the Debenture Repayment Price shall be made through the Trustee, subject to the Trustee's receipt of payment from the Company in accordance with the terms of the Indenture, no later than 12:00 noon, New York City time, on the Put Option Exercise Date, and to such account as may be designated. If the Trustee holds immediately available funds sufficient to pay the Debenture Repayment Price of Debentures presented for repayment, then, immediately prior to the close of business on the Put Option Exercise Date, such Debentures will cease to be outstanding and Interest thereon will cease to accrue, whether or not such Debentures have been received by the Company, and all other rights of the Holder in respect of the Debentures, including the Holder's right to require the Company to repay such Debentures, shall terminate and lapse (other than the right to receive the Debenture Repayment Price upon delivery of such Debentures but without interest on such Debenture Repayment Price). Neither the Trustee nor the Company will be required to register or cause to be registered the transfer of any Debenture for which repayment has been elected. ARTICLE IV EXPENSES Section 4.1 Payment of Expenses. In connection with the offering, sale and issuance of the Debentures to the Holders, the Company, in its capacity as borrower with respect to the Debentures shall pay all costs and expenses relating to the offering, sale and issuance of the 9

13 Debentures, including commissions to the underwriters payable pursuant to the Underwriting Agreement and compensation of the Trustee under the Indenture in accordance with the provisions of Section 5.6 of the Base Indenture. ARTICLE V NOTICE Section 5.1 Notice by the Company. The Company shall give prompt written notice to a Responsible Officer of the Trustee of any fact known to the Company that would prohibit the making of any payment of monies to or by the Trustee in respect of the Debentures. Notwithstanding any of the provisions of the Base Indenture and this First Supplemental Indenture, the Trustee shall not be charged with knowledge of the existence of any facts that would prohibit the making of any payment of monies to or by the Trustee in respect of the Debentures; provided, however, that if the Trustee shall not have received the notice provided for in this Article V at least two Business Days prior to the date upon which by the terms hereof any money may become payable for any purpose (including, without limitation, the payment of the principal of (or premium, if any) or interest on any Debenture), then, anything herein contained to the contrary notwithstanding, the Trustee shall have full power and authority to receive such money and to apply the same to the purposes for which they were received, and shall not be affected by any notice to the contrary that may be received by it within two Business Days prior to such date. ARTICLE VI FORM OF DEBENTURE Section 6.1 Form of Debenture. The Debentures and the Trustee's Certificate of Authentication to be endorsed thereon are to be substantially in the following forms, with such changes therein as the officers of the Company executing the Debentures (by manual or facsimile signature) may approve, such approval to be conclusively evidenced by their execution thereof: (FORM OF FACE OF DEBENTURE) IF THE DEBENTURE IS TO BE A GLOBAL DEBENTURE, INSERT - THIS DEBENTURE IS A GLOBAL DEBENTURE WITHIN THE MEANING OF THE 10

14 INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF THE CLEARING AGENCY OR A NOMINEE OF THE CLEARING AGENCY. THIS DEBENTURE IS EXCHANGEABLE FOR DEBENTURES REGISTERED IN THE NAME OF A PERSON OTHER THAN THE CLEARING AGENCY OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE, AND NO TRANSFER OF THIS DEBENTURE (OTHER THAN A TRANSFER OF THIS DEBENTURE AS A WHOLE BY THE CLEARING AGENCY TO A NOMINEE OF THE CLEARING AGENCY OR BY A NOMINEE OF THE CLEARING AGENCY TO THE CLEARING AGENCY OR ANOTHER NOMINEE OF THE CLEARING AGENCY OR TO A SUCCESSOR CLEARING AGENCY OR TO A NOMINEE OF SUCH SUCCESSOR) MAY BE REGISTERED EXCEPT IN LIMITED CIRCUMSTANCES. UNLESS THIS DEBENTURE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW YORK) TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT AND ANY DEBENTURE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF TIE DEPOSITORY TRUST COMPANY AND ANY PAYMENT HEREON IS MADE TO CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY A PERSON IS WRONGFUL SINCE TIE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. CUSIP No.________________ $________________________ NRG ENERGY, INC. ___% SENIOR DEBENTURE DUE ___________, 2006 NRG ENERGY, INC., a Delaware corporation (the "Company", which term includes any successor corporation under the Indenture hereinafter referred to), for value received, hereby promises to pay to _________, as Trustee or registered assigns, the principal sum of_________________ Dollars ($___________) on __________, 2006 (such date is hereinafter referred to as the "Maturity Date"), and to pay interest on said principal sum from ___________, 2001 or from the next 11

15 recent date to which interest has been paid or duly provided for, quarterly in arrears on __________, __________, ___________ and ___________ of each year (each such date, an "Interest Payment Date"), commencing on ___________, 2001 initially at the rate of ___% per annum through and including the day immediately preceding the Reset Effective Date and at the Reset Rate thereafter until the principal hereof shall have been paid or duly made available for payment and, to the extent permitted by law, to pay interest, compounded quarterly, on any overdue principal and premium, if any, and on any overdue installment of interest at the rate per annum of ___% through and including the day immediately preceding the Reset Effective Date and at the Reset Rate thereafter. The amount of interest payable on any Interest Payment Date shall be computed on the basis of a 360-day year consisting of twelve 30-day months and, except as provided in the Indenture (as defined below), the amount of interest payable for any period shorter than a full quarterly period for which interest is computed will be computed on the basis of the actual number of days elapsed in such 90-day period. In the event that any date on which interest is payable on this Debenture is not a Business Day, then payment of interest payable on such date will be made on the next succeeding day that is a Business Day (and without any interest or other payment in respect of any such delay), except that, if such Business Day is in the next succeeding calendar year, such payment shall be made on the immediately preceding Business Day, in each case with the same force and effect as if made on such Interest Payment Date. The interest installment so payable, and punctually paid or duly provided for, on any Interest Payment Date will, as provided in the Indenture, be paid to the person in whose name this Debenture (or one or more predecessor Securities) is registered at the close of business on the Regular Record Date for such interest installment which shall be the close of business on the first day of the month in which such Interest Payment Date falls. Any such interest installment not punctually paid or duly provided for on any Interest Payment Date shall forthwith cease to be payable to the registered Holders at the close of business on such Regular Record Date and may be paid to the Person in whose name this Debenture (or one or more predecessor Securities) is registered at the close of business on a special record date to be fixed by the Trustee for the payment of such defaulted interest, notice whereof shall be given to the registered Holders of this series of Debentures not less than 10 days prior to such special record date, or may be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Debentures may be listed, and upon such notice as may be required by such exchange, all as more fully provided in the Indenture. The principal of (and premium, if any) and the interest on this Debenture shall be payable at the office or agency of the Company maintained for that purpose in the Borough of Manhattan, the City of New York in any coin or currency of the United States of America that at the time of payment is legal tender 12

16 for payment of public and private debts; provided, however, that payment of interest may be made at the option of the Company by check mailed to the registered Holder at such address as shall appear in the Security Register or by wire transfer to an account appropriately designated by the Holder entitled thereto. The indebtedness evidenced by this Debenture is, to the extent provided in the Indenture, senior and unsecured and will rank in right of payment on parity with all other senior unsecured obligations of the Company. This Debenture shall not be entitled to any benefit under the Indenture hereinafter referred to or be valid or obligatory for any purpose until the Certificate of Authentication shall have been signed by or on behalf of the Trustee. The provisions of this Debenture are continued on the reverse side hereof and such continued provisions shall for all purposes have the same effect as though fully set forth at this place. 13

17 IN WITNESS WHEREOF, the Company has caused this instrument to be executed. Dated: _________, 2001 NRG ENERGY, INC., as Issuer By:________________________ Name: Title: Attest: By:____________________________ Name: Title: CERTIFICATE OF AUTHENTICATION This is one of the Debentures of the series of Debentures described in the within-mentioned Indenture. Dated _________________________________ [______________________________________], as Trustee By_____________________________________ Authorized Signatory 14

18 (FORM OF REVERSE OF DEBENTURE) This Debenture is one of a duly authorized series of Securities of the Company (herein sometimes referred to as the "Debentures"), issued and to be issued in one or more series under and pursuant to an Indenture dated as of __________, 2001 (the "Base Indenture") between the Company and _______________________, as Trustee (the "Trustee," which term includes any successor trustee under the Indenture), as supplemented by a First Supplemental Indenture, dated as of ________, 2001 (the "First Supplemental Indenture") between the Company and the Trustee (the Base Indenture as so supplemented, the "Indenture"), to which Indenture and all indentures supplemental thereto reference is hereby made for a description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Trustee, the Company and the Holders of the Debentures. By the terms of the Indenture, the Securities are issuable in series that may vary as to amount, date of maturity, rate of interest and in other respects as provided in the Indenture. This series of Securities is limited in aggregate principal amount as specified in said First Supplemental Indenture. If a Tax Event shall occur and be continuing, the Company may, at its option, redeem the Debentures in whole (but not in part) at any time at a price per Debenture equal to the Redemption Price. The Redemption Price shall be paid to each Holder of the Debentures by the Company, no later than 12:00 noon, New York City time, on the Tax Event Redemption Date, by check or wire transfer in immediately available funds, at such place and to such account as may be designated by each such Holder. The Debentures are not entitled to the benefit of any sinking fund. If a Failed Secondary Remarketing (as described in Section 5.4(b) of the Purchase Contract Agreement and incorporated herein by reference) has occurred, each holder of Debentures who holds such Debentures on the day immediately following the Purchase Contract Settlement Date shall have the right (the "Put Option") on the Business Day immediately following the Purchase Contract Settlement Date, to put such Debentures to the Company, on ____________, 2004 (the "Put Option Exercise Date"), upon at least three Business Days prior notice), at a repayment price equal to the principal amount of this Debenture plus an amount equal to the accrued and unpaid interest thereon to the date of payment (the "Debenture Repayment Price"). 15

19 In order for the Debentures to be so repurchased, the Trustee must receive, on or prior to 5:00 p.m. New York City Time on the third Business Day immediately preceding the Put Option Exercise Date, at its Corporate Trust Office, or at an office or agency maintained by the Company in the Borough of Manhattan, The City of New York as contemplated by Section 2.3 of the First Supplemental Indenture, the Debentures to be repurchased with the form entitled "Option to Elect Repayment" on the reverse of or otherwise accompanying such Debentures duly completed. Any such notice received by the Trustee shall be irrevocable. All questions as to the validity, eligibility (including time of receipt) and acceptance of the Debentures for repayment shall be determined by the Company, whose determination shall be final and binding. The payment of the Debenture Repayment Price in respect of such Debentures shall be made no later than 12:00 noon, New York City time, on the Put Option Exercise Date. In case an Event of Default, as defined in the Indenture, shall have occurred and be continuing, the principal of all of the Debentures may be declared, and upon such declaration shall become, due and payable (or, in certain circumstances shall ipso facto become due and payable), in the manner, with the effect and subject to the conditions provided in the Indenture. The Indenture contains provisions permitting, with certain exceptions therein provided, the Company and the Trustee, with the consent of the Holders of not less than a majority in aggregate principal amount of the Outstanding Securities of each series affected to execute supplemental indentures for the purpose of, among other things, adding any provisions to or changing or eliminating any of the provisions of the Indenture or of any supplemental indenture or of modifying the rights of the Holders of the Securities. The Indenture also contains provisions permitting the Holders of a majority in aggregate principal amount of the Securities of any series at the time Outstanding, on behalf of all of the Holders of all Securities of such series, to waive a Default or Event of Default with respect to such series and its consequences, except a Default or Event of Default in the payment of the principal of or premium, if any, or interest on any of the Securities of such series or in respect of a covenant or other provision which, under the terms of the Indenture, cannot be modified or amended without the consent of the Holder of each Outstanding Security of such series affected. Any such consent or waiver by the registered Holder of this Debenture (unless revoked as provided in the Indenture) shall be conclusive and binding upon such Holder and upon all future Holders of this Debenture and of any Debenture issued in exchange for or in place hereof (whether by registration of transfer or otherwise), irrespective of whether or not any notation of such consent or waiver is made upon this Debenture. 16

20 No reference herein to the Indenture and no provision of this Debenture or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of and premium, if any, and interest on this Debenture at the time and place and at the rate and in the money herein prescribed. As provided in the Indenture and subject to certain limitations therein set forth, this Debenture is transferable by the registered Holder hereof on the Security Register of the Company, upon surrender of this Debenture for registration of transfer at the office or agency of the Company maintained for such purpose in the Borough of Manhattan, The City of New York, accompanied by a written instrument or instruments of transfer in form satisfactory to the Company or the Trustee duly executed by the registered Holder hereof or his attorney duly authorized in writing, and thereupon one or more new Debentures of authorized denominations and for the same aggregate principal amount will be issued to the designated transferee or transferees. No service charge will be made for any such transfer, but the Company may require payment of a sum sufficient to cover any transfer tax or similar governmental charge payable in relation thereto. Prior to due presentment for registration of transfer of this Debenture, the Company, the Trustee, any Paying Agent and the Security Registrar may deem and treat the registered Holder hereof as the absolute owner hereof (whether or not this Debenture shall be overdue and notwithstanding any notice of ownership or writing hereon made by anyone other than the Security Registrar) for the purpose of receiving payment of or on account of the principal hereof and premium, if any, and interest due hereon and for all other purposes, and neither the Company nor the Trustee nor any Paying Agent nor any Security Registrar shall be affected by any notice to the contrary. No recourse shall be had for the payment of the principal of or the interest on this Debenture, or for any claim based hereon, or otherwise in respect hereof, or based on or in respect of the Indenture, against any incorporator, shareholder, officer or director, past, present or future, as such, of the Company or of any predecessor or successor corporation, whether by virtue of any constitution, statute or rule of law, or by the enforcement of any assessment or penalty or otherwise, all such liability being, by the acceptance hereof and as part of the consideration for the issuance hereof, expressly waived and released. The Indenture imposes certain limitations on the ability of the Company to, among other things, merge or consolidate with any other Person or sell, assign, 17

21 transfer or lease all or substantially all of its properties or assets, and requires that the Company comply with certain further covenants. All such covenants and limitations are subject to a number of important qualifications and exceptions. The Company must report periodically to the Trustee on compliance with the covenants in the Indenture. The Debentures of this series are issuable only in registered form without coupons in denominations of $25 and any integral multiple thereof. As provided in the Indenture and subject to certain limitations therein set forth, Debentures are exchangeable for a like aggregate principal amount of Debentures of a different authorized denomination, as requested by the Holder surrendering the same. All terms used in this Debenture that are defined in the Indenture shall have the meanings assigned to them in the Indenture. The Debentures are subject to defeasance and covenant defeasance upon the terms and subject to the conditions set forth in the Indenture. This Debenture shall be governed by and construed in accordance with the internal laws of the State of New York. 18

22 OPTION TO ELECT REPAYMENT The undersigned hereby irrevocably requests and instructs the Company to repay $____ principal amount of the within Debenture, pursuant to its terms, on the "Put Option Exercise Date," together with any interest thereon accrued but unpaid to the date of repayment, to the undersigned at: (Please print or type name and address of the undersigned) and to issue to the undersigned, pursuant to the terms of the Indenture, a new Debenture or Debentures representing the remaining aggregate principal amount of this Debenture. For this Option to Elect Repayment to be effective, this Debenture with the Option to Elect Repayment duly completed must be received by the Trustee at c/o ___________________________________________, no later than 5:00 p.m. on the third Business Day immediately preceding ___________, 2004. Dated: _______________________ Signature:_________________________________ Signature Guarantee:_______________________ Note: The signature to this Option to Elect Repayment must correspond with the name as written upon the face of the within Debenture without alteration or enlargement or any change whatsoever. SIGNATURE GUARANTEE Signatures must be guaranteed by an "eligible guarantor institution" meeting the requirements of the Registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program ("STAMP") or such other "signature guarantee program" as may be determined by the Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. 19

23 ASSIGNMENT FOR VALUE RECEIVED, the undersigned assigns and transfers this Debenture to: _______________________________________________________________________________ _______________________________________________________________________________ (Insert assignee's social security or tax identification number) _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ (Insert address and zip code of assignee) and irrevocably appoints _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ agent to transfer this Debenture on the books of the Company. The agent may substitute another to act for him or her. Date: _____________________________________ Signature: _________________________________Signature Guarantee:___________________________ (Sign exactly as your name appears on the other side of this Debenture) SIGNATURE GUARANTEE Signatures must be guaranteed by an "eligible guarantor institution" meeting the requirements of the Registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program ("STAMP") or such 20

24 other "signature guarantee program" as may be determined by the Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. ARTICLE VII ORIGINAL ISSUE OF DEBENTURES Section 7.1 Original Issue of Debentures. Debentures in the aggregate principal amount of $200,000,000 (or, $230,000,000, if the Underwriters' over-allotment option is exercised in full) may from time to time, upon execution of this First Supplemental Indenture, be executed by the Company and delivered to the Trustee for authentication, and the Trustee shall thereupon authenticate and deliver said Debentures to or upon the written order of the Company pursuant to Section 2.2 of the Base Indenture without any further action by the Company. The Company shall file with the Trustee promptly at the end of each calendar year (i) a written notice specifying the amount of original issue discount (including daily rates and accrual periods) accrued on Outstanding Debentures as of the end of the year and (ii) such other specific information relating to such original issue discount as may then be relevant under the Internal Revenue Code of 1986, as amended from time to time. ARTICLE VIII MISCELLANEOUS Section 8.1 Ratification of Indenture. The Indenture as supplemented by this First Supplemental Indenture, is in all respects ratified and confirmed, and this First Supplemental Indenture shall be deemed part of the Indenture in the manner and to the extent herein and therein provided. Section 8.2 Trustee Not Responsible for Recitals. The recitals herein contained are made by the Company and not by the Trustee, and the Trustee assumes no responsibility for the correctness thereof. The Trustee makes no representation as to the validity or sufficiency of this First Supplemental Indenture. 21

25 Section 8.3 New York Law to Govern. THIS FIRST SUPPLEMENTAL INDENTURE AND EACH DEBENTURE SHALL, PURSUANT TO SECTION 5-1401 OF THE NEW YORK GENERAL OBLIGATIONS LAW, BE GOVERNED BY THE LAW OF THE STATE OF NEW YORK, WITHOUT REFERENCE TO THE CHOICE OF LAW PROVISIONS THEREOF (OTHER THAN SUCH SECTION 5-1401). Section 8.4 Separability. In case any one or more of the provisions contained in this First Supplemental Indenture or in the Debentures shall for any reason be held to be invalid, illegal or unenforceable in any respect, then, to the extent permitted by law, such invalidity, illegality or unenforceability shall not affect any other provisions of this First Supplemental Indenture or of the Debentures, but this First Supplemental Indenture and the Debentures shall be construed as if such invalid or illegal or unenforceable provision had never been contained herein or therein. Section 8.5 Counterparts. This First Supplemental Indenture may be executed in any number of counterparts each of which shall be an original, but such counterparts shall together constitute but one and the same instrument. Section 8.6 Provisions of Base Indenture Not Applicable. The provisions of Section 3.9 and Article XI of the Base Indenture shall not apply to the Debentures. ARTICLE IX REMARKETING Section 9.1 Initial Remarketing Procedures (a) The Company will request, not later than seven nor more than 15 calendar days prior to the Initial Remarketing Date that the Clearing Agency notify the Holders of the Debentures and the Holders of Corporate Units and Treasury Units of the Initial Remarketing. 22

26 (b) Not later than 5:00 P.M., New York City time, on the second Business Day immediately preceding the Initial Remarketing Date, each Holder of the Debentures not constituting components of Corporate Units may elect to have Debentures held by such Holder remarketed. Holders of Debentures that are not a component of Corporate Units shall give notice of their election to have such Debentures remarketed to the Custodial Agent pursuant to the Pledge Agreement. Any such notice shall be irrevocable after 5:00 P.M., New York City time, on the second Business Day immediately preceding the Initial Remarketing Date and may not be conditioned upon the level at which the Reset Rate is established. Promptly after 5:30 P.M., New York City time, on such second Business Day, the Trustee, based on the notices received by it prior to such time (including notices from the Purchase Contract Agent as to Purchase Contracts for which Cash Settlement has been elected), shall notify the Company and the Remarketing Agent of the number of Debentures to be tendered for remarketing. Under Section 5.3 of the Purchase Contract Agreement, Debentures that constitute components of Corporate Units will be remarketed as provided therein and in this Section 9.1. The Debentures constituting components of Corporate Units shall be deemed tendered, notwithstanding any failure by the Holder of such Corporate Units to deliver or properly deliver such Debentures to the Remarketing Agent for purchase. (c) The right of each Holder to have Debentures tendered for purchase shall be limited to the extent that (i) the Remarketing Agent conducts a remarketing pursuant to the terms of the Remarketing Agreement, (ii) Debentures tendered have not been called for redemption, (iii) the Remarketing Agent is able to find a purchaser or purchasers for tendered Debentures at a price per Debenture such that the aggregate price for the Applicable Principal Amount of Debentures is not less than 100% of the Treasury Portfolio Purchase Price, and (iv) such purchaser or purchasers deliver the purchase price therefor to the Remarketing Agent as and when required. (d) On the Initial Remarketing Date, the Remarketing Agent shall use reasonable efforts to remarket, at a price per Debenture such that the aggregate price for the Applicable Principal Amount of Debentures is equal to approximately 100.5% of the Treasury Portfolio Purchase Price, Debentures tendered or deemed tendered for purchase. 23

27 (e) If there are no Corporate Units outstanding and none of the Holders elect to have Debentures held by them remarketed, the Reset Rate shall be the rate determined by the Reset Agent, subject to the terms of the Remarketing Agreement, as the rate that would have been established had a remarketing been held on the Initial Remarketing Date. (f) If the Remarketing Agent has determined that it will be able to remarket all Debentures tendered or deemed tendered prior to 4:00 P.M., New York City time, on the Initial Remarketing Date, the Reset Agent, subject to the terms of the Remarketing Agreement, shall determine the Reset Rate. (g) If, by 4:00 P.M., New York City time, on the Initial Remarketing Date, the Remarketing Agent is unable to remarket all Debentures tendered or deemed tendered for purchase or if the Initial Remarketing shall not have occurred because a condition precedent to the Remarketing shall not have been fulfilled, a failed remarketing ("Failed Initial Remarketing") shall be deemed to have occurred and the Remarketing Agent shall so advise by telephone the Collateral Agent, Company, Trustee, and Clearing Agency. (h) By approximately 4:30 P.M., New York City time, on the Initial Remarketing Date, provided that there has not been a Failed Initial Remarketing, the Remarketing Agent shall advise, by telephone (i) the Collateral Agent, the Company, Trustee, and Clearing Agency of the Reset Rate determined in the Initial Remarketing and the aggregate principal amount of Debentures sold in the Initial Remarketing, (ii) each purchaser (or the Clearing Agency Participant thereof) of the Reset Rate and the aggregate principal amount of Debentures such purchaser is to purchase and (iii) each purchaser to give instructions to its Clearing Agency Participant to pay the purchase price on ___________, 2003 in same day funds against delivery of the Debentures purchased through the facilities of the Clearing Agency. (i) In accordance with the Clearing Agency's normal procedures, on ________, 2003, the transactions described above with respect to each Debenture tendered for purchase and sold in the Initial Remarketing shall be executed through the Clearing Agency, and the accounts of the respective Clearing Agency Participants shall be debited and credited and such Debentures delivered by book entry as necessary to effect purchases and sales of such Debentures. The Clearing Agency shall make payment in accordance with its normal procedures. 24

28 (j) If any Holder selling Debentures in the Initial Remarketing fails to deliver such Debentures, the Clearing Agency Participant of such selling Holder and of any other Person that was to have purchased Debentures in the Initial Remarketing may deliver to any such other Person an aggregate principal amount of Debentures that is less than the aggregate principal amount of Debentures that otherwise was to be purchased by such Person. In such event, the aggregate principal amount of Debentures to be so delivered shall be determined by such Clearing Agency Participant, and delivery of such lesser aggregate principal amount of Debentures shall constitute good delivery. (k) The Remarketing Agent is not obligated to purchase any Debentures in the Initial Remarketing or otherwise. Neither the Trust, any Trustee, the Company nor the Remarketing Agent shall be obligated in any case to provide funds to make payment upon tender of Debentures for remarketing. (l) The tender and settlement procedures set in this Section 9.1, including provisions for payment by purchasers of Debentures in the Initial Remarketing, shall be subject to modification, notwithstanding any provision to the contrary set forth herein, to the extent required by the Clearing Agency or if the book-entry system is no longer available for the Debentures at the time of the Initial Remarketing, to facilitate the tendering and remarketing of Debentures in certificated form. In addition, the Remarketing Agent may, notwithstanding any provision to the contrary set forth herein, modify the settlement procedures set forth herein in order to facilitate the settlement process. (m) Anything herein to the contrary notwithstanding, the Reset Rate shall in no event exceed the maximum rate permitted by applicable law and, as provided in the Remarketing Agreement, neither the Remarketing Agent nor the Reset Agent shall have any obligation to determine whether there is any limitation under applicable law on the Reset Rate or, if there is any such limitation, the maximum permissible Reset Rate on the Debentures and they shall rely solely upon written notice from the Company (which the Company agrees to provide prior to the 10th Business Day before ________, 2003) as to whether or not there is any such limitation and, if so, the maximum permissible Reset Rate. 25

29 Section 9.2 Secondary Remarketing Procedures. (a) If a Failed Initial Remarketing has occurred, the Company will request, not later than seven nor more than 15 calendar days prior to the Secondary Remarketing Date that the Clearing Agency notify the Holders of the Debentures and the Holders of Corporate Units and Treasury Units of the Secondary Remarketing and of the procedures that must be followed if a Holder of Debentures wishes to exercise such Holder's rights with respect to the Put Option if there is a Failed Secondary Remarketing. (b) Not later than 5:00 P.M., New York City time, on the second Business Day immediately preceding the Secondary Remarketing Date, each Holder of the Debentures may elect to have Debentures held by such Holder remarketed. Under Section 5.4 of the Purchase Contract Agreement, Holders of Corporate Units that do not give notice of intention to make a Cash Settlement of their related Purchase Contracts shall be deemed to have consented to the disposition of the Debentures constituting a component of such Corporate Units. Holders of Debentures that are not a component of Corporate Units shall give notice of their election to have such Debentures remarketed to the Custodial Agent pursuant to the Pledge Agreement. Any such notice shall be irrevocable after 5:00 P.M., New York City time, on the second Business Day immediately preceding the Secondary Remarketing Date and may not be conditioned upon the level at which the Reset Rate is established. Promptly after 5:30 P.M., New York City time, on such second Business Day, the Trustee, based on the notices received by it prior to such time (including notices from the Purchase Contract Agent as to Purchase Contracts for which Cash Settlement has been elected), shall notify the Company and the Remarketing Agent of the number of Debentures to be tendered for remarketing. (c) If any Holder of Corporate Units does not give a notice of its intention to make a Cash Settlement or gives a notice of election to tender Debentures as described in Section 9.2(b), the Debentures of such Holder shall be deemed tendered, notwithstanding any failure by such Holder to deliver or properly deliver such Debentures to the Remarketing Agent for purchase. (d) The right of each Holder to have Debentures tendered for purchase shall be limited to the extent that (i) the Remarketing Agent conducts a remarketing pursuant to the terms of the Remarketing Agreement, (ii) 26

30 Debentures tendered have not been called for redemption, (iii) the Remarketing Agent is able to find a purchaser or purchasers for tendered Debentures at a price of not less than 100% of the principal amount thereof, and (iv) such purchaser or purchasers deliver the purchase price therefor to the Remarketing Agent as and when required. (e) If a Failed Initial Remarketing has occurred, on the Secondary Remarketing Date, the Remarketing Agent shall use reasonable efforts to remarket, at a price equal to approximately 100.5% of the aggregate principal amount thereof, Debentures tendered or deemed tendered for purchase. (f) If none of the Holders elect or are deemed to have elected to have Debentures held by them remarketed, the Reset Rate shall be the rate determined by the Reset Agent, subject to the terms of the Remarketing Agreement, as the rate that would have been established had a remarketing been held on the Secondary Remarketing Date. (g) If the Remarketing Agent has determined that it will be able to remarket all Debentures tendered or deemed tendered prior to 4:00 P.M., New York City time, on the Secondary Remarketing Date, the Reset Agent shall, subject to the terms of the Remarketing Agreement, determine the Reset Rate. (h) If, by 4:00 P.M., New York City time, on the Secondary Remarketing Date, the Remarketing Agent is unable to remarket all Debentures tendered or deemed tendered for purchase or if the Secondary Remarketing shall not have occurred because a condition precedent to the Secondary Remarketing shall not have been fulfilled, a failed remarketing ("Failed Secondary Remarketing") shall be deemed to have occurred and the Remarketing Agent shall so advise by telephone the Collateral Agent, Company, Trustee, and Clearing Agency. (i) By approximately 4:30 P.M., New York City time, on the Secondary Remarketing Date, provided that there has not been a Failed Secondary Remarketing, the Remarketing Agent shall advise, by telephone (i) the Collateral Agent, the Company, Trustee, and Clearing Agency of the Reset Rate determined in the Secondary Remarketing and the aggregate principal amount of Debentures sold in the Secondary Remarketing, (ii) each purchaser (or the Clearing Agency Participant thereof) of the Reset Rate and the aggregate principal amount of Debentures such purchaser is to purchase 27

31 and (iii) each purchaser to give instructions to its Clearing Agency Participant to pay the purchase price on the Purchase Contract Settlement Date in same day funds against delivery of the Debentures purchased through the facilities of the Clearing Agency. (j) In accordance with the Clearing Agency's normal procedures, on the Purchase Contract Settlement Date, the transactions described above with respect to each Debenture tendered for purchase and sold in the Secondary Remarketing shall be executed through the Clearing Agency, and the accounts of the respective Clearing Agency Participants shall be debited and credited and such Debentures delivered by book entry as necessary to effect purchases and sales of such Debentures. The Clearing Agency shall make payment in accordance with its normal procedures. (k) If any Holder selling Debentures in the Secondary Remarketing fails to deliver such Debentures, the Clearing Agency Participant of such selling Holder and of any other Person that was to have purchased Debentures in the Secondary Remarketing may deliver to any such other Person an aggregate principal amount of Debentures that is less than the aggregate principal amount of Debentures that otherwise was to be purchased by such Person. In such event, the aggregate principal amount of Debentures to be so delivered shall be determined by such Clearing Agency Participant, and delivery of such lesser aggregate principal amount of Debentures shall constitute good delivery. (l) The Remarketing Agent is not obligated to purchase any Debentures in the Secondary Remarketing or otherwise. Neither the Trust, any Trustee, the Company nor the Remarketing Agent shall be obligated in any case to provide funds to make payment upon tender of Debentures for remarketing. (m) The tender and settlement procedures set in this Section 9.2, including provisions for payment by purchasers of Debentures in the Secondary Remarketing, shall be subject to modification, notwithstanding any provision to the contrary set forth herein, to the extent required by the Clearing Agency or if the book-entry system is no longer available for the Debentures at the time of the Secondary Remarketing, to facilitate the tendering and remarketing of Debentures in certificated form. In addition, the Remarketing Agent may, notwithstanding any provision to the contrary set forth herein, modify the settlement procedures set forth herein in order to facilitate the settlement process. 28

32 (n) Anything herein to the contrary notwithstanding, the Reset Rate shall in no event exceed the maximum rate permitted by applicable law and, as provided in the Remarketing Agreement, neither the Remarketing Agent nor the Reset Agent shall have any obligation to determine whether there is any limitation under applicable law on the Reset Rate or, if there is any such limitation, the maximum permissible Reset Rate on the Debentures and they shall rely solely upon written notice from the Company (which the Company agrees to provide prior to the 10th Business Day before the Purchase Contract Settlement Date) as to whether or not there is any such limitation and, if so, the maximum permissible Reset Rate. 29

33 IN WITNESS WHEREOF, the parties hereto have caused this First Supplemental Indenture to be duly executed by their respective officers thereunto duly authorized, on the date or dates indicated in the acknowledgments and as of the day and year first above written. NRG ENERGY, INC., as Issuer By: __________________________ Name: Title: Attest: By: ________________________ Name: Title: _______________________________, as Trustee By: ____________________________ Name: Title: Attest: By: ________________________ Name: Title: 30

1 EXHIBIT 4.3 ================================================================================ NRG ENERGY, INC. AND ------------------------, AS PURCHASE CONTRACT AGENT -------------------- PURCHASE CONTRACT AGREEMENT -------------------- DATED AS OF , 2001 ---------- ================================================================================

2 TABLE OF CONTENTS Page RECITALS............................................................................................1 ARTICLE I Definitions and Other Provisions of General Applications.............................................................................1 Section 1.1. Definitions.......................................................................1 Section 1.2. Compliance Certificates and Opinions.............................................16 Section 1.3. Form of Documents Delivered to Agent.............................................17 Section 1.4. Acts of Holders; Record Dates....................................................18 Section 1.5. Notices..........................................................................19 Section 1.6. Notice to Holders; Waiver........................................................20 Section 1.7. Effect of Headings and Table of Contents.........................................21 Section 1.8. Successors and Assigns...........................................................21 Section 1.9. Separability Clause..............................................................21 Section 1.10. Benefits of Agreement............................................................21 Section 1.11. Governing Law....................................................................22 Section 1.12. Legal Holidays...................................................................22 Section 1.13. Counterparts.....................................................................22 Section 1.14. Inspection of Agreement..........................................................23 ARTICLE II Certificate Forms..................................................................................23 Section 2.1. Forms of Certificates Generally..................................................23 Section 2.2. Form of Agent's Certificate of Authentication....................................24 ARTICLE III The Securities.....................................................................................24 Section 3.1. Title and Terms; Denominations...................................................24 Section 3.2. Rights and Obligations Evidenced by the Certificates.............................25 Section 3.3. Execution, Authentication, Delivery and Dating...................................26 Section 3.4. Temporary Certificates...........................................................26 Section 3.5. Registration; Registration of Transfer and Exchange..............................27 Section 3.6. Book-Entry Interests.............................................................29 Section 3.7. Notices to Holders...............................................................30 Section 3.8. Appointment of Successor Clearing Agency.........................................30 Section 3.9. Definitive Certificates..........................................................30 Section 3.10. Mutilated, Destroyed, Lost and Stolen Certificates...............................30 i

3 Page ---- Section 3.11. Persons Deemed Owners............................................................32 Section 3.12. Cancellation.....................................................................32 Section 3.13. Establishment of Treasury Units..................................................33 Section 3.14. Reestablishment of Corporate Units...............................................35 Section 3.15. Transfer of Collateral upon Occurrence of Termination Event......................37 Section 3.16. No Consent to Assumption.........................................................38 ARTICLE IV The Debentures.....................................................................................38 Section 4.1. Payment of Distribution; Rights to Distributions Preserved; Distribution Rate Reset; Notice................................38 Section 4.2. Notice and Voting................................................................40 Section 4.3. Tax Event Redemption.............................................................41 ARTICLE V The Purchase Contracts.............................................................................42 Section 5.1. Purchase of Shares of Common Stock...............................................42 Section 5.2. [Reserved].......................................................................44 Section 5.3. Initial Remarketing..............................................................44 Section 5.4. Payment of Purchase Price........................................................45 Section 5.5. Issuance of Shares of Common Stock...............................................49 Section 5.6. Adjustment of Settlement Rate....................................................50 Section 5.7. Notice of Adjustments and Certain Other Events...................................58 Section 5.8. Termination Event; Notice........................................................59 Section 5.9. Early Settlement.................................................................59 Section 5.10. No Fractional Shares.............................................................61 Section 5.11. Charges and Taxes................................................................62 ARTICLE VI Remedies...........................................................................................62 Section 6.1. Unconditional Right of Holders to Purchase Common Stock..........................62 Section 6.2. Restoration of Rights and Remedies...............................................62 Section 6.3. Rights and Remedies Cumulative...................................................63 Section 6.4. Delay or Omission Not Waiver.....................................................63 Section 6.5. Undertaking for Costs............................................................63 Section 6.6. Waiver of Stay or Extension Laws.................................................64 ARTICLE VII The Agent..........................................................................................64 ii

4 Page ---- Section 7.1. Certain Duties and Responsibilities..............................................64 Section 7.2. Notice of Default................................................................65 Section 7.3. Certain Rights of Agent..........................................................65 Section 7.4. Not Responsible for Recitals or Issuance of Securities...........................66 Section 7.5. May Hold Securities..............................................................66 Section 7.6. Money Held in Custody............................................................67 Section 7.7. Compensation and Reimbursement...................................................67 Section 7.8. Corporate Agent Required; Eligibility............................................68 Section 7.9. Resignation and Removal; Appointment of Successor................................68 Section 7.10. Acceptance of Appointment by Successor...........................................70 Section 7.11. Merger, Conversion, Consolidation or Succession to Business......................70 Section 7.12. Preservation of Information; Communications to Holders...........................71 Section 7.13. No Obligations of Agent..........................................................71 Section 7.14. Tax Compliance...................................................................71 ARTICLE VIII Supplemental Agreements............................................................................72 Section 8.1. Supplemental Agreements Without Consent of Holders...............................72 Section 8.2. Supplemental Agreements with Consent of Holders..................................73 Section 8.3. Execution of Supplemental Agreements.............................................74 Section 8.4. Effect of Supplemental Agreements................................................74 Section 8.5. Reference to Supplemental Agreements.............................................75 ARTICLE IX Consolidation, Merger, Sale or Conveyance..........................................................75 Section 9.1. Covenant Not to Merge, Consolidate, Sell or Convey Property Except Under Certain Conditions.........................................................75 Section 9.2. Rights and Duties of Successor Corporation.......................................76 Section 9.3. Opinion of Counsel Given to Agent................................................76 ARTICLE X Covenants..........................................................................................77 Section 10.1. Performance Under Purchase Contracts.............................................77 Section 10.2. Maintenance of Office or Agency..................................................77 Section 10.3. Company to Reserve Common Stock..................................................78 Section 10.4. Covenants as to Common Stock.....................................................78 EXHIBIT A Form of Corporate Units Certificate iii

5 Page ---- EXHIBIT B Form of Treasury Units Certificate EXHIBIT C Instruction From Purchase Contract Agent to Collateral Agent EXHIBIT D Instruction to Purchase Contract Agent EXHIBIT E Notice to Settle by Separate Cash iv

6 PURCHASE CONTRACT AGREEMENT, dated as of _________, 2001 between NRG Energy, Inc., a Delaware corporation (the "Company"), and _____________________, a _____________ corporation, acting as purchase contract agent for the Holders of Securities from time to time (the "Agent"). RECITALS The Company has duly authorized the execution and delivery of this Agreement and the Certificates evidencing the Securities. All things necessary to make the Purchase Contracts, when the Certificates are executed by the Company and authenticated, executed on behalf of the Holders and delivered by the Agent, as provided in this Agreement, the valid obligations of the Company, and to constitute these presents a valid agreement of the Company, in accordance with its terms, have been done. WITNESSETH: For and in consideration of the premises and the purchase of the Securities by the Holders thereof, it is mutually agreed as follows: ARTICLE I Definitions and Other Provisions of General Applications Section 1.1. Definitions. For all purposes of this Agreement, except as otherwise expressly provided or unless the context otherwise requires: (a) the terms defined in this Article have the meanings assigned to them in this Article and include the plural as well as the singular; and nouns and pronouns of the masculine gender include the feminine and neuter genders;

7 (b) all accounting terms not otherwise defined herein have the meanings assigned to them in accordance with generally accepted accounting principles in the United States; (c) the words "herein," "hereof" and "hereunder" and other words of similar import refer to this Agreement as a whole and not to any particular Article, Section or other subdivision; (d) the following terms have the meanings given to them in this Section 1.1(d). "Act" when used with respect to any Holder, has the meaning specified in Section 1.4. "Affiliate" has the same meaning as given to that term in Rule 405 of the Securities Act of 1993, as amended, as is in effect on the date hereof. "Agent" means the Person named as the "Agent" in the first paragraph of this instrument until a successor Agent shall have become such pursuant to the applicable provisions of this Agreement, and thereafter "Agent" shall mean such Person. "Agreement" means this instrument as originally executed or as it may from time to time be supplemented or amended by one or more agreements supplemental hereto entered into pursuant to the applicable provisions hereof. "Applicable Market Value" has the meaning specified in Section 5.1. "Applicable Ownership Interest" means, with respect to a Corporate Unit and the Treasury Securities in the Treasury Portfolio, (A) a 1/40, or 2.5%, undivided beneficial ownership interest in a $1,000 principal or interest amount of a principal or interest strip in a U.S. Treasury Security included in such Treasury Portfolio which matures on or prior to ____________, 2004 and (B) for the scheduled interest payment date on the Debentures that occurs on the Purchase Contract Settlement Date, in the case of a Successful Initial Remarketing, or after the Tax Event Redemption Date and on or before the Purchase Contract Settlement Date, in the case of a Tax Event Redemption, a ___% undivided beneficial ownership interest in a $1,000 face amount of such U.S. Treasury Security which is a principal or interest strip maturing on such interest payment date. 2

8 "Applicable Principal Amount" means the aggregate principal amount of the Debentures which are components of Corporate Units on the Initial Remarketing Date. "Authorized Newspaper" means a daily newspaper, in the English language, customarily published on each day that is a Business Day in The City of New York, whether or not published on days that are Legal Holidays, and of general circulation in The City of New York. The Authorized Newspaper for the purposes of the Reset Announcement Date is currently anticipated to be The Wall Street Journal. "Bankruptcy Code" means title 11 of the United States Code, or any other law of the United States that from time to time provides a uniform system of bankruptcy laws. "Beneficial Owner" means, with respect to a Book-Entry Interest, a Person who is the owner of such Book-Entry Interest as reflected on the books of the Clearing Agency or on the books of a Person maintaining an account with such Clearing Agency (directly as a Clearing Agency Participant or as an indirect participant, in each case in accordance with the rules of such Clearing Agency). "Board of Directors" means the board of directors of the Company or a duly authorized committee of that board. "Board Resolution" means one or more resolutions of the Board of Directors, a copy of which has been certified by the Secretary or an Assistant Secretary of the Company to have been duly adopted by the Board of Directors and to be in full force and effect on the date of such certification and delivered to the Agent. "Book-Entry Interest" means a beneficial interest in a Global Certificate, ownership and transfers of which shall be maintained and made through book entries by a Clearing Agency as described in Section 3.6. "Business Day" means any day other than a Saturday, a Sunday or any other day on which banking institutions in New York City (in the State of New York) are permitted or required by any applicable law to close. "Cash Settlement" has the meaning set forth in Section 5.4(a)(i). "Certificate" means a Corporate Units Certificate or a Treasury Units Certificate. 3

9 "Class A Common Stock" means the Class A Common Stock, $0.01 par value, of the Company. "Clearing Agency" means an organization registered as a "Clearing Agency" pursuant to Section 17A of the Exchange Act that is acting as a depositary for the Securities and in whose name, or in the name of a nominee of that organization, shall be registered a Global Certificate and which shall undertake to effect book entry transfers and pledges of the Securities. "Clearing Agency Participant" means a broker, dealer, bank, other financial institution or other Person for whom from time to time the Clearing Agency effects book entry transfers and pledges of securities deposited with the Clearing Agency. "Closing Price" has the meaning specified in Section 5.1. "Collateral" has the meaning specified in Section 2.1 of the Pledge Agreement. "Collateral Agent" means _______________, as Collateral Agent under the Pledge Agreement until a successor Collateral Agent shall have become such pursuant to the applicable provisions of the Pledge Agreement, and thereafter "Collateral Agent" shall mean the Person who is then the Collateral Agent thereunder. "Collateral Substitution" has the meaning specified in Section 3.13. "Common Equity Securities" means shares of a class of stock of the Company that is not entitled to priority over any other class of stock of the Company in the payment of dividends or with respect to rights upon the liquidation, dissolution or winding up of the Company. "Common Stock" means the Common Stock, $0.01 par value, of the Company. "Company" means the Person named as the "Company" in the first paragraph of this instrument until a successor shall have become such pursuant to the applicable provision of this Agreement, and thereafter "Company" shall mean such successor. 4

10 "Corporate Trust Office" means the principal corporate trust office of the Agent at which, at any particular time, its corporate trust business shall be administered, which office at the date hereof is located at ____________________________. "Corporate Units" means the collective rights and obligations of a Holder of a Corporate Units Certificate in respect of a Debenture or an appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, subject in each case to the Pledge thereof, and the related Purchase Contract. "Corporate Units Certificate" means a certificate evidencing the rights and obligations of a Holder in respect of the number of Corporate Units specified on such certificate. "Corporate Units Register" and "Corporate Units Registrar" have the respective meanings specified in Section 3.5. "Coupon Rate" means the percentage rate per annum at which each Debenture will bear interest initially. "Current Market Price" has the meaning specified in Section 5.6(a)(8). "Debentures" means the series of debentures of the Company designated the ___% Senior Debentures due ____________, 2006, to be issued under the Indenture as of the date hereof. "Depositary" means, initially, DTC until another Clearing Agency becomes its successor. "DTC" means The Depository Trust Company, the initial Clearing Agency. "Early Settlement" has the meaning specified in Section 5.9(a). "Early Settlement Amount" has the meaning specified in Section 5.9(a). "Early Settlement Date" has the meaning specified in Section 5.9(a). "Early Settlement Rate" has the meaning specified in Section 5.9(b). 5

11 "Exchange Act" means the Securities Exchange Act of 1934 and any statute successor thereto, in each case as amended from time to time, and the rules and regulations promulgated thereunder. "Expiration Date" has the meaning specified in Section 1.4. "Expiration Time" has the meaning specified in Section 5.6(a)(6). "Failed Initial Remarketing" has the meaning specified in Section 5.3. "Failed Secondary Remarketing" has the meaning specified in Section 5.4(b). "Global Debenture Certificate" means a certificate evidencing the respective rights and obligations of Holders in respect of the number of Debentures specified on such certificate and which is registered in the name of a Clearing Agency or a nominee thereof. "Global Certificate" means a Certificate that evidences all or part of the Securities and is registered in the name of a Depositary or a nominee thereof. "Holder," when used with respect to a Security, means the Person in whose name the Security evidenced by a Corporate Units Certificate and/or Treasury Units Certificate is registered in the related Corporate Units Register and/or Treasury Units Register, as the case may be. "Indenture" means the Indenture dated as of ________, 2001 between the Company and the Indenture Trustee, as amended and supplemented by the First Supplemental Indenture dated as of _________, 2001 between the Company and the Indenture Trustee. "Indenture Trustee" means __________________, a __________ corporation, as trustee under the Indenture, or any successor thereto. "Initial Remarketing" has the meaning specified in Section 5.3. "Initial Remarketing Date" means the third business day immediately preceding ___________, 2003. "Issuer Order" or "Issuer Request" means a written order or request signed in the name of the Company by its Chairman of the Board, its President or a Vice 6

12 President and by its Chief Financial Officer, its Treasurer, an Assistant Treasurer, its Secretary or an Assistant Secretary, and delivered to the Agent. "NYSE" has the meaning specified in Section 5.1. "New York Office" shall have the meaning set forth in Section 10.2 "Officer's Certificate" means a certificate of the Company signed on its behalf by the Chairman of the Board, the President, any Vice President, the Treasurer, any Assistant Treasurer, the Secretary or any Assistant Secretary of the Company and delivered to the Agent. "Opinion of Counsel" means an opinion in writing signed by legal counsel, who may be an employee of or counsel to the Company or an Affiliate and who shall be reasonably acceptable to the Agent. "Outstanding Securities," with respect to the Corporate Units or Treasury Units, means, as of the date of determination, all Corporate Units or Treasury Units, as the case may be, evidenced by Certificates theretofore authenticated, executed and delivered under this Agreement, except: (i) If a Termination Event has occurred, (A) Treasury Units for which the Stated Amount of Treasury Securities has been theretofore deposited with the Agent in trust for the Holders of such Treasury Units and (B) Corporate Units for which the Stated Amount of the related Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, has been theretofore deposited with the Agent in trust for the Holders of such Corporate Units; (ii) Corporate Units or Treasury Units evidenced by Certificates theretofore cancelled by the Agent or delivered to the Agent for cancellation or deemed cancelled pursuant to the provisions of this Agreement; and (iii) Corporate Units or Treasury Units evidenced by Certificates in exchange for or in lieu of which other Certificates have been authenticated, executed on behalf of the Holder and delivered pursuant to this Agreement, other than any such Certificate in respect of which there shall have been presented to the Agent proof satisfactory to it that such Certificate is held by a bona fide purchaser in whose hands the Corporate Units or Treasury Units evidenced by such Certificate are valid obligations of the Company; 7

13 provided, however, that in determining whether the Holders of the requisite number of the Corporate Units or Treasury Units have given any request, demand, authorization, direction, notice, consent or waiver hereunder, Corporate Units or Treasury Units owned by the Company or any Affiliate of the Company shall be disregarded and deemed not to be outstanding, except that, in determining whether the Agent shall be protected in relying upon any such request, demand, authorization, direction, notice, consent or waiver, only Corporate Units or Treasury Units which a Responsible Officer of the Agent knows to be so owned shall be so disregarded. Corporate Units or Treasury Units so owned which have been pledged in good faith may be regarded as Outstanding Securities if the pledgee establishes to the satisfaction of the Agent the pledgee's right so to act with respect to such Corporate Units or Treasury Units and that the pledgee is not the Company or any Affiliate of the Company. "Payment Date" means each _________, _________, _________ and _________, commencing ___________, 2001. "Person" means a legal person, including any individual, corporation, estate, partnership, joint venture, association, joint-stock company, limited liability company, trust, unincorporated association or government or any agency or political subdivision thereof or any other entity of whatever nature. "Permitted Investments" has the meaning set forth in Section 1 of the Pledge Agreement. "Pledge" means the pledge under the Pledge Agreement of the Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, and of the Treasury Securities, in each case constituting a part of the Securities. "Pledge Agreement" means the Pledge Agreement, dated as of the date hereof, by and among the Company, the Collateral Agent and the Agent, on its own behalf and as attorney-in-fact for the Holders from time to time of the Securities, as the same may hereafter be amended in accordance with the terms thereof. "Predecessor Certificate" means a Predecessor Corporate Units Certificate or a Predecessor Treasury Units Certificate. "Predecessor Corporate Units Certificate" of any particular Corporate Units Certificate means every previous Corporate Units Certificate evidencing all or a 8

14 portion of the rights and obligations of the Company and the Holder under the Corporate Units evidenced thereby; and, for the purposes of this definition, any Corporate Units Certificate authenticated and delivered under Section 3.10 in exchange for or in lieu of a mutilated, destroyed, lost or stolen Corporate Units Certificate shall be deemed to evidence the same rights and obligations of the Company and the Holder as the mutilated, destroyed, lost or stolen Corporate Units Certificate. "Predecessor Treasury Units Certificate" of any particular Treasury Units Certificate means every previous Treasury Units Certificate evidencing all or a portion of the rights and obligations of the Company and the Holder under the Treasury Units evidenced thereby; and, for the purposes of this definition, any Treasury Units Certificate authenticated and delivered under Section 3.10 in exchange for or in lieu of a mutilated, destroyed, lost or stolen Treasury Units Certificate shall be deemed to evidence the same rights and obligations of the Company and the Holder as the mutilated, destroyed, lost or stolen Treasury Units Certificate. "Primary Treasury Dealer" means a primary U.S. government securities dealer in The City of New York. "Proceeds" has the meaning set forth in Section 1 of the Pledge Agreement. "Purchase Contract," when used with respect to any Security, means the contract forming a part of such Security and obligating the Company to (i) sell and the Holder of such Security to purchase Common Stock on the terms and subject to the conditions set forth in Article Five hereof. "Purchase Contract Settlement Date" means _______________, 2004. "Purchase Contract Settlement Fund" has the meaning specified in Section 5.5. "Purchase Price" has the meaning specified in Section 5.1. "Purchased Shares" has the meaning specified in Section 5.6(a)(6). "Quotation Agent" means (i) Merrill Lynch Government Securities, Inc. and its respective successors, provided, however, that if the foregoing shall cease to be a 9

15 Primary Treasury Dealer, the Sponsor shall substitute therefor another Primary Treasury Dealer or (ii) any other Primary Treasury Dealer selected by the Sponsor. "Recapitalization Transaction" has the meaning specified in Section 5.6(a)(7). "Record Date" for the distribution payable in respect of the Debentures or the Applicable Ownership Percentage of the Treasury Portfolio payable on any Payment Date means the first day of the month in which the relevant Payment Date occurs. "Redemption Amount" mean, for each Debenture, the product of (i) the principal amount of such Debenture and (ii) a fraction whose numerator is the applicable Treasury Portfolio Purchase Price and whose denominator is the applicable Tax Event Redemption Principal Amount. "Redemption Price" means the redemption price per Debenture equal to the Redemption Amount plus any accrued and unpaid interest on such Debenture to the date of redemption. "Register" means the Corporate Units Register and the Treasury Units Register. "Registrar" means the Corporate Units Registrar and the Treasury Units Registrar. "Remarketing Agent" has the meaning specified in Section 5.3. "Remarketing Agreement" means the Remarketing Agreement dated as of ________, 2001 by and among the Company, the Remarketing Agent and the Purchase Contract Agent. "Remarketing Fee" has the meaning specified in Section 5.3. "Reorganization Event" has the meaning specified in Section 5.6(c). "Reset Agent" means a nationally recognized investment banking firm chosen by the Company to determine the Reset Rate. It is currently anticipated that Merrill Lynch, Pierce, Fenner & Smith Incorporated will act in such capacity. "Reset Announcement Date" means, in the case of the Reset Rate to be determined on the Initial Remarketing Date, the tenth Business Day immediately 10

16 preceding __________________, 2003 and, in the case of the Reset Rate to be determined on the Secondary Remarketing Date, the tenth Business Day immediately preceding the Purchase Contract Settlement Date. "Reset Rate" means the interest rate per annum (to be determined by the Reset Agent), equal to the sum of (X) the Reset Spread and (Y) the rate of interest on (1) in the case of the Reset Rate to be determined on the Initial Remarketing Date, the Two and One-Quarter Year Benchmark Treasury in effect on the Initial Remarketing Date or (2) in the case of the Reset Rate to be determined on the Secondary Remarketing Date, the Two-Year Benchmark Treasury in effect on the Secondary Remarketing Date. "Reset Spread" means (a) in the case of the Reset Rate to be determined on the Initial Remarketing Date, a spread amount to be determined by the Reset Agent on the applicable Reset Announcement Date as the appropriate spread so that the Reset Rate will be the interest rate that the Debentures should bear in order for the Applicable Principal Amount of Debentures to have an approximate aggregate market value of 100.5% of the Treasury Portfolio Purchase Price on the Initial Remarketing Date and (b) in the case of the Reset Rate to be determined on the Secondary Remarketing Date, a spread amount determined by the Reset Agent on the applicable Reset Announcement Date as the appropriate spread so that the Reset Rate will be the interest rate that the Debentures should bear in order for the Debentures to have an approximate market value of 100.5% of their principal amount on the Secondary Remarketing Date. "Responsible Officer," when used with respect to the Agent, means any officer of the Agent assigned by the Agent to administer its corporate trust matters. "Secondary Remarketing" has the meaning specified in Section 5.4(b). "Secondary Remarketing Date" means the third business day immediately preceding the Purchase Contract Settlement Date. "Security" means a Corporate Unit or a Treasury Unit. "Settlement Rate" has the meaning specified in Section 5.1. "Stated Amount" means $25. "Successful Initial Remarketing" has the meaning specified in Section 5.3. 11

17 "Successful Secondary Remarketing" has the meaning specified in Section 5.4(b). "Tax Event" means the receipt by the Company of an opinion of a nationally recognized independent tax counsel experienced in such matters to the effect that, as a result of (a) any amendment to, or change (including any announced proposed change) in, the laws (or any regulations thereunder) of the United States or any political subdivision or taxing authority thereof or therein affecting taxation, (b) any amendment to or change in an interpretation or application of such laws or regulations by any legislative body, court, governmental agency or regulatory authority or (c) any interpretation or pronouncement that provides for a position with respect to such laws or regulations that differs from the generally accepted position on the date the Debentures are issued, which amendment, change or proposed change is effective or which interpretation or pronouncement is announced on or after the date of the first issuance of Debentures under the Indenture, there is more than an insubstantial risk that interest payable by the Company on the Debentures would not be deductible, in whole or in part, by the Company for United States federal income tax purposes. "Tax Event Redemption" means, if a Tax Event shall occur and be continuing, the redemption of the Debentures, at the option of the Company, in whole but not in part, on not less than 30 days nor more than 60 days notice. "Tax Event Redemption Principal Amount" means either (i) if the Tax Event Redemption Date occurs prior to ______________, 2003 or, in the event of a Failed Initial Remarketing, prior to the Purchase Contract Settlement Date, the aggregate principal amount of the Debentures which are components of Corporate Units on the Tax Event Redemption Date or (ii) if the Tax Event Redemption Date occurs on or after _________________, 2003 or, in the event of a Failed Initial Remarketing, on or after the Purchase Contract Settlement Date, the aggregate principal amount of the Debentures outstanding on such Tax Event Redemption Date. "Tax Event Redemption Date" means the date upon which a Tax Event Redemption is to occur. "Termination Date" means the date, if any, on which a Termination Event occurs. "Termination Event" means the occurrence of any of the following events: (i) at any time on or prior to the Purchase Contract Settlement Date, a judgment, decree 12

18 or court order shall have been entered granting relief under the Bankruptcy Code, adjudicating the Company to be insolvent, or approving as properly filed a petition seeking reorganization or liquidation of the Company or any other similar applicable Federal or State law, and, unless such judgment, decree or order shall have been entered within 60 days prior to the Purchase Contract Settlement Date, such decree or order shall have continued undischarged and unstayed for a period of 60 days; or (ii) at any time on or prior to the Purchase Contract Settlement Date, a judgment, decree or court order for the appointment of a receiver or liquidator or trustee or assignee in bankruptcy or insolvency of the Company or of its property, or for the winding up or liquidation of its affairs, shall have been entered, and, unless such judgment, decree or order shall have been entered within 60 days prior to the Purchase Contract Settlement Date, such judgment, decree or order shall have continued undischarged and unstayed for a period of 60 days, or (iii) at any time on or prior to the Purchase Contract Settlement Date the Company shall file a petition for relief under the Bankruptcy Code, or shall consent to the filing of a bankruptcy proceeding against it, or shall file a petition or answer or consent seeking reorganization or liquidation under the Bankruptcy Code or any other similar applicable Federal or State law, or shall consent to the filing of any such petition, or shall consent to the appointment of a receiver or liquidator or trustee or assignee in bankruptcy or insolvency of it or of its property, or shall make an assignment for the benefit of creditors, or shall admit in writing its inability to pay its debts generally as they become due. "Threshold Appreciation Price" has the meaning specified in Section 5.1. "TIA" means the Trust Indenture Act of 1939, as amended, or any successor statute. "Trading Day" has the meaning specified in Section 5.1. 13

19 "Treasury Portfolio" means (1) in connection with the Initial Remarketing, a portfolio of zero-coupon U.S. Treasury Securities consisting of (a) principal or interest strips of U.S. Treasury Securities which mature on or prior to ____________, 2004 in an aggregate amount equal to the Applicable Principal Amount and (b) with respect to the scheduled interest payment date on the Debentures that occurs on the Purchase Contract Settlement Date, principal or interest strips of U.S. Treasury Securities which mature on or prior to such date in an aggregate amount equal to the aggregate interest payment that would be due on the Applicable Principal Amount of the Debentures on such date if the applicable Coupon Rate on the Debentures were not reset to the Reset Rate as described in Section 4.1 and (2) in connection with a Tax Event Redemption, (a) if the Tax Event Redemption Date occurs prior to _________________, 2003 or, in the event of a Failed Initial Remarketing, prior to the Purchase Contract Settlement Date, a portfolio of zero-coupon U.S. Treasury Securities consisting of (i) principal or interest strips of U.S. Treasury Securities which mature on or prior to ____________, 2004 in an aggregate amount equal to the applicable Tax Event Redemption Principal Amount and (ii) with respect to each scheduled interest payment date on the Debentures that occurs after the Tax Event Redemption Date and on or before the Purchase Contract Settlement Date, principal or interest strips of U.S. Treasury Securities which mature on or prior to such date in an aggregate amount equal to the aggregate interest payment that would be due on the applicable Tax Event Redemption Principal Amount of the Debentures on such date, and (b) if the Tax Event Redemption Date occurs on or after ____________________, 2003 or, in the event of a Failed Initial Remarketing, on or after the Purchase Contract Settlement Date, a portfolio of zero-coupon U.S. Treasury Securities consisting of (i) principal or interest strips of U.S. Treasury Securities which mature on or prior to_________, 2006 in an aggregate amount equal to the applicable Tax Event Redemption Principal Amount and (ii) with respect to each scheduled interest payment date on the Debentures that occurs after the Tax Event Redemption Date, principal or interest strips of such U.S. Treasury Securities which mature on or prior to such date in an aggregate amount equal to the aggregate interest payment that would be due on the applicable Tax Event Redemption Principal Amount of the Debentures on such date. "Treasury Portfolio Purchase Price" means the lowest aggregate price quoted by the Primary Treasury Dealer to the Quotation Agent (a) in the case of a Tax Event Redemption, on the third Business Day immediately preceding the Tax Event Redemption Date for the purchase of the applicable Treasury Portfolio for settlement on the Tax Event Redemption Date and (b) in the case of the Initial Remarketing, on the Initial Remarketing Date for the purchase of the applicable Treasury Portfolio for settlement on ____________________, 2003. 14

20 "Treasury Security" means zero-coupon U.S. Treasury Securities (CUSIP Number ________) which are the principal strip of the U.S. Treasury Securities which mature on ______________, 2004. "Treasury Units" means the collective rights and obligations of a Holder of a Treasury Units Certificate in respect of the Treasury Securities, subject to the Pledge thereof, and the related Purchase Contract. "Treasury Units Certificate" means a certificate evidencing the rights and obligations of a Holder in respect of the number of Treasury Units specified on such certificate. "Treasury Units Register" and "Treasury Units Registrar" have the respective meanings specified in Section 3.5. "Two-Year Benchmark Treasury" means direct obligations of the United States (which may be obligations traded on a when-issued basis only) having a maturity comparable to the remaining term to maturity of the Debentures, as agreed upon by the Sponsor and the Reset Agent. The rate for the Two-Year Benchmark Treasury will be the bid side rate displayed at 10:00 A.M., New York City time, on the third Business Day immediately preceding the Purchase Contract Settlement Date in the Telerate system (or if the Telerate system is (a) no longer available on the Secondary Remarketing Date or (b) in the opinion of the Reset Agent (after consultation with the Company) no longer an appropriate system from which to obtain such rate, such other nationally recognized quotation system as, in the opinion of the Reset Agent (after consultation with the Company) is appropriate). If such rate is not so displayed, the rate for the Two-Year Benchmark Treasury shall be, as calculated by the Reset Agent, the yield to maturity for the Two-Year Benchmark Treasury, expressed as a bond equivalent on the basis of a year of 365 or 366 days, as applicable, and applied on a daily basis, and computed by taking the arithmetic mean of the secondary market bid rates, as of 10:30 A.M., New York City time, on the Secondary Remarketing Date of three leading United States government securities dealers selected by the Reset Agent (after consultation with the Company)(which may include the Reset Agent or an Affiliate thereof). "Two and One-Quarter Year Benchmark Treasury" means direct obligations of the United States (which may be obligations traded on a when-issued basis only) having a maturity comparable to the remaining term to maturity of the Debentures, as agreed upon by the Sponsor and the Reset Agent. The rate for the Two and One-Quarter Year Benchmark Treasury will be the bid side rate displayed at 10:00 A.M., 15

21 New York City time, on the Initial Remarketing Date in the Telerate system (or if the Telerate system is (a) no longer available on the Initial Remarketing Date or (b) in the opinion of the Reset Agent (after consultation with the Company) no longer an appropriate system from which to obtain such rate, such other nationally recognized quotation system as, in the opinion of the Reset Agent (after consultation with the Company) is appropriate). If such rate is not so displayed, the rate for the Two and One-Quarter Year Benchmark Treasury shall be, as calculated by the Reset Agent, the yield to maturity for the Two and One-Quarter Year Benchmark Treasury, expressed as a bond equivalent on the basis of a year of 365 or 366 days, as applicable, and applied on a daily basis, and computed by taking the arithmetic mean of the secondary market bid rates, as of 10:30 A.M., New York City time, on the Initial Remarketing Date of three leading United States government securities dealers selected by the Reset Agent (after consultation with the Company) (which may include the Reset Agent or an Affiliate thereof). "Underwriting Agreement" means the Underwriting Agreement dated _________, 2001 among the Company, and Merrill Lynch, Pierce, Fenner & Smith Incorporated, Credit Suisse First Boston Corporation, CIBC World Markets Corp., J.P. Morgan Securities Inc. and Salomon Smith Barney Inc., as representatives of the underwriters named therein. "Vice President" means any vice president, whether or not designated by a number or a word or words added before or after the title "vice president." Section 1.2. Compliance Certificates and Opinions. Except as otherwise expressly provided by this Agreement, upon any application or request by the Company to the Agent to take any action under any provision of this Agreement, the Company shall furnish to the Agent an Officer's Certificate stating that all conditions precedent, if any, provided for in this Agreement relating to the proposed action have been complied with and, if reasonably requested by the Agent, an Opinion of Counsel stating that, in the opinion of such counsel, all such conditions precedent, if any, have been complied with, except that in the case of any such application or request as to which the furnishing of such documents is specifically required by any provision of this Agreement relating to such particular application or request, no additional certificate or opinion need be furnished. Every certificate or opinion with respect to compliance with a condition or covenant provided for in this Agreement shall include: 16

22 (1) a statement that each Person signing such certificate or opinion has read such covenant or condition and the definitions herein relating thereto; (2) a brief statement as to the nature and scope of the examination or investigation upon which the statements or opinions contained in such certificate or opinion are based; (3) a statement that, in the opinion of each such Person, he or she or it has made such examination or investigation as is necessary to enable such individual to express an informed opinion as to whether or not such covenant or condition has been complied with; and (4) a statement as to whether, in the opinion of each such Person, such condition or covenant has been complied with. Section 1.3. Form of Documents Delivered to Agent. In any case where several matters are required to be certified by, or covered by an opinion of, any specified Person, it is not necessary that all such matters be certified by, or covered by the opinion of, only one such Person, or that they be so certified or covered by only one document, but one such Person may certify or give an opinion with respect to some matters and one or more other such Persons as to other matters, and any such Person may certify or give an opinion as to such matters in one or several documents. Any certificate or opinion of the Company may be based, insofar as it relates to legal matters, upon a certificate or opinion of, or representations by, counsel, unless the Company knows, or in the exercise of reasonable care should know, that the certificate or opinion or representations with respect to the matters upon which his certificate or opinion is based are erroneous. Any such certificate or Opinion of Counsel may be based, insofar as it relates to factual matters, upon a certificate or opinion of, or representations by, the Company stating that the information with respect to such factual matters is in the possession of the Company unless the Person giving such certificate or Opinion of Counsel knows, or in the exercise of reasonable care should know, that the certificate or opinion or representations with respect to such matters are erroneous. Where any Person is required to make, give or execute two or more applications, requests, consents, certificates, statements, opinions or other 17

23 instruments under this Agreement, they may, but need not, be consolidated and form one instrument. Section 1.4. Acts of Holders; Record Dates. (a) Any request, demand, authorization, direction, notice, consent, waiver or other action provided by this Agreement to be given or taken by Holders may be embodied in and evidenced by one or more instruments of substantially similar tenor signed by such Holders in person or by agent duly appointed in writing; and, except as herein otherwise expressly provided, such action shall become effective when such instrument or instruments are delivered to the Agent and, where it is hereby expressly required, to the Company. Such instrument or instruments (and the action embodied therein and evidenced thereby) are herein sometimes referred to as the "Act" of the Holders signing such instrument or instruments. Proof of execution of any such instrument or of a writing appointing any such agent shall be sufficient for any purpose of this Agreement and (subject to Section 7.1) conclusive in favor of the Agent and the Company, if made in the manner provided in this Section. (b) The fact and date of the execution by any Person of any such instrument or writing may be proved in any manner which the Agent deems sufficient. (c) The ownership of Securities shall be proved by the Corporate Units Register or the Treasury Units Register, as the case may be. (d) Any request, demand, authorization, direction, notice, consent, waiver or other Act of the Holder of any Certificate shall bind every future Holder of the same Certificate and the Holder of every Certificate issued upon the registration of transfer thereof or in exchange therefor or in lieu thereof in respect of anything done, omitted or suffered to be done by the Agent or the Company in reliance thereon, whether or not notation of such action is made upon such Certificate. (e) The Company may set any day as a record date for the purpose of determining the Holders of Outstanding Securities entitled to give, make or take any request, demand, authorization, direction, notice, consent, waiver or other action provided or permitted by this Agreement to be given, made or taken by Holders of Securities. If any record date is set pursuant to this paragraph, the Holders of the Outstanding Corporate Units and the Outstanding Treasury Units, as the case may be, on such record date, and no other Holders, shall be entitled to take the relevant action with respect to the Corporate Units or the Treasury Units, as the case may be, 18

24 whether or not such Holders remain Holders after such record date; provided that no such action shall be effective hereunder unless taken on or prior to the applicable Expiration Date by Holders of the requisite number of Outstanding Securities on such record date. Nothing in this paragraph shall be construed to prevent the Company from setting a new record date for any action for which a record date has previously been set pursuant to this paragraph (whereupon the record date previously set shall automatically and with no action by any Person be cancelled and of no effect), and nothing in this paragraph shall be construed to render ineffective any action taken by Holders of the requisite number of Outstanding Securities on the date such action is taken. Promptly after any record date is set pursuant to this paragraph, the Company, at its own expense, shall cause notice of such record date, the proposed action by Holders and the applicable Expiration Date to be given to the Agent in writing and to each Holder of Securities in the manner set forth in Section 1.6. With respect to any record date set pursuant to this Section, the Company may designate any date as the "Expiration Date" and from time to time may change the Expiration Date to any earlier or later day; provided that no such change shall be effective unless notice of the proposed new Expiration Date is given to the Agent in writing, and to each Holder of Securities in the manner set forth in Section 1.6, on or prior to the existing Expiration Date. If an Expiration Date is not designated with respect to any record date set pursuant to this Section, the Company shall be deemed to have initially designated the 180th day after such record date as the Expiration Date with respect thereto, subject to its right to change the Expiration Date as provided in this paragraph. Notwithstanding the foregoing, no Expiration Date shall be later than the 180th day after the applicable record date. Section 1.5. Notices. Any request, demand, authorization, direction, notice, consent, waiver or Act of Holders or other document provided or permitted by this Agreement to be made upon, given or furnished to, or filed with, (1) the Agent by any Holder or by the Company shall be sufficient for every purpose hereunder (unless otherwise herein expressly provided) if made, given, furnished or filed in writing and personally delivered or mailed, first-class postage prepaid, to the Agent at ___________________________, or at any other address previously furnished in writing by the Agent to the Holders and the Company; or 19

25 (2) the Company by the Agent or by any Holder shall be sufficient for every purpose hereunder (unless otherwise herein expressly provided) if made, given, furnished or filed in writing and personally delivered or mailed, first-class postage prepaid, to the Company at NRG Energy, Inc., 901 Marquette Avenue, Suite 2300, Minneapolis, MN 55402, Attention: Chief Financial Officer, or at any other address previously furnished in writing to the Agent by the Company; or (3) the Collateral Agent by the Agent, the Company or any Holder shall be sufficient for every purpose hereunder (unless otherwise herein expressly provided) if made, given, furnished or filed in writing and personally delivered or mailed, first-class postage prepaid, addressed to the Collateral Agent at _________________________________________________, or at any other address previously furnished in writing by the Collateral Agent to the Agent, the Company and the Holders; or (4) the Indenture Trustee by the Company shall be sufficient for every purpose hereunder (unless otherwise herein expressly provided) if made, given, furnished or filed in writing and personally delivered or mailed, first-class postage prepaid, addressed to the Indenture Trustee at __________________________, or at any other address previously furnished in writing by the Indenture Trustee to the Company. Section 1.6. Notice to Holders; Waiver. Where this Agreement provides for notice to Holders of any event, such notice shall be sufficiently given (unless otherwise herein expressly provided) if in writing and mailed, first-class postage prepaid, to each Holder affected by such event, at its address as it appears in the applicable Register, not later than the latest date, and not earlier than the earliest date, prescribed for the giving of such notice. In any case where notice to Holders is given by mail, neither the failure to mail such notice, nor any defect in any notice so mailed, to any particular Holder shall affect the sufficiency of such notice with respect to other Holders. Where this Agreement provides for notice in any manner, such notice may be waived in writing by the Person entitled to receive such notice, either before or after the event, and such waiver shall be the equivalent of such notice. Waivers of notice by Holders shall be filed with the Agent, but such filing shall not be a condition precedent to the validity of any action taken in reliance upon such waiver. 20

26 In case by reason of the suspension of regular mail service or by reason of any other cause it shall be impracticable to give such notice by mail, then such notification as shall be made with the approval of the Agent shall constitute a sufficient notification for every purpose hereunder. Section 1.7. Effect of Headings and Table of Contents. The Article and Section headings herein and the Table of Contents are for convenience only and shall not affect the construction hereof. Section 1.8. Successors and Assigns. All covenants and agreements in this Agreement by the Company shall bind its successors and assigns, whether so expressed or not. Section 1.9. Separability Clause. In case any provision in this Agreement or in the Securities shall be invalid, illegal or unenforceable, then, to the extent permitted by law, the validity, legality and enforceability of the remaining provisions hereof and thereof shall not in any way be affected or impaired thereby. Section 1.10. Benefits of Agreement. Nothing in this Agreement or in the Securities, express or implied, shall give to any Person, other than the parties hereto and their successors hereunder and, to the extent provided hereby, the Holders, any benefits or any legal or equitable right, remedy or claim under this Agreement. The Holders from time to time shall be beneficiaries of this Agreement and shall be bound by all of the applicable terms and conditions hereof and of the Securities evidenced by their Certificates by their acceptance of delivery of such Certificates. Section 1.11. Governing Law. THIS AGREEMENT AND THE SECURITIES SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO PRINCIPLES OF CONFLICTS OF LAWS. 21

27 Section 1.12. Legal Holidays. In any case where any Purchase Contract Settlement Date shall not be a Business Day, then (notwithstanding any other provision of this Agreement, the Corporate Units Certificates or the Treasury Units Certificates), the Purchase Contracts shall not be performed on such date, but the Purchase Contracts shall be performed on the immediately following Business Day with the same force and effect as if performed on the Purchase Contract Settlement Date. Section 1.13. Counterparts. This Agreement may be executed in any number of counterparts by the parties hereto on separate counterparts, each of which, when so executed and delivered, shall be deemed an original, but all such counterparts shall together constitute one and the same instrument. Section 1.14. Inspection of Agreement. A copy of this Agreement shall be available at all reasonable times during normal business hours at the Corporate Trust Office for inspection by any Holder. ARTICLE II Certificate Forms Section 2.1. Forms of Certificates Generally. The Corporate Units Certificates (including the form of Purchase Contract forming part of the Corporate Units evidenced thereby) shall be in substantially the form set forth in Exhibit A hereto, with such letters, numbers or other marks of identification or designation and such legends or endorsements printed, lithographed or engraved thereon as may be required by the rules of any securities exchange on which the Corporate Units are listed or any depositary therefor, or as may, consistently herewith, be determined by the officers of the Company executing such Corporate Units Certificates, as evidenced by their execution of the Corporate Units Certificates. The definitive Corporate Units Certificates shall be printed, lithographed or engraved on steel engraved borders or may be produced in any other manner, all as 22

28 determined by the officers of the Company executing such Corporate Units Certificates, consistent with the provisions of this Agreement, as evidenced by their execution thereof. The Treasury Units Certificates (including the form of Purchase Contract forming part of the Treasury Units evidenced thereby) shall be in substantially the form set forth in Exhibit B hereto, with such letters, numbers or other marks of identification or designation and such legends or endorsements printed, lithographed or engraved thereon as may be required by the rules of any securities exchange on which the Treasury Units are listed or any depositary therefor, or as may, consistently herewith, be determined by the officers of the Company executing such Treasury Units Certificates, as evidenced by their execution of the Treasury Units Certificates. The definitive Treasury Units Certificates shall be printed, lithographed or engraved on steel engraved borders or may be produced in any other manner, all as determined by the officers of the Company executing such Treasury Units Certificates, consistent with the provisions of this Agreement, as evidenced by their execution thereof. Every Global Certificate authenticated, executed on behalf of the Holders and delivered hereunder shall bear a legend in substantially the following form: THIS CERTIFICATE IS A GLOBAL CERTIFICATE WITHIN THE MEANING OF THE PURCHASE CONTRACT AGREEMENT (AS HEREINAFTER DEFINED) AND IS REGISTERED IN THE NAME OF THE CLEARING AGENCY OR A NOMINEE THEREOF. THIS CERTIFICATE MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR A CERTIFICATE REGISTERED, AND NO TRANSFER OF THIS CERTIFICATE IN WHOLE OR IN PART MAY BE REGISTERED, IN THE NAME OF ANY PERSON OTHER THAN SUCH CLEARING AGENCY OR A NOMINEE THEREOF, EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE PURCHASE CONTRACT AGREEMENT. Section 2.2. Form of Agent's Certificate of Authentication. The form of the Agent's certificate of authentication of the Corporate Units shall be in substantially the form set forth on the form of the Corporate Units Certificates. 23

29 The form of the Agent's certificate of authentication of the Treasury Units shall be in substantially the form set forth on the form of the Treasury Units Certificates. ARTICLE III The Securities Section 3.1. Title and Terms; Denominations. The aggregate number of Corporate Units and Treasury Units evidenced by Certificates authenticated, executed on behalf of the Holders and delivered hereunder is limited to $[200,000,000] (or $[230,000,000] if the Underwriters' overallotment option is exercised in full) except for Certificates authenticated, executed and delivered upon registration of transfer of, in exchange for, or in lieu of, other Certificates pursuant to Section 3.4, 3.5, 3.9, 3.10, 3.13, 3.14, 5.9 or 8.5. The Certificates shall be issuable only in registered form and only in denominations of a single Corporate Unit or Treasury Unit and any integral multiple thereof. Section 3.2. Rights and Obligations Evidenced by the Certificates. Each Corporate Units Certificate shall evidence the number of Corporate Units specified therein, with each such Corporate Unit representing the ownership by the Holder thereof of a beneficial interest in a Debenture or the Applicable Owner ship Interest of the Treasury Portfolio, as the case may be, subject to the Pledge of such Debenture or the Applicable Ownership Interest of the Treasury Portfolio, as the case may be, by such Holder pursuant to the Pledge Agreement, and the rights and obligations of the Holder thereof and the Company under one Purchase Contract. The Agent as attorney-in-fact for, and on behalf of, the Holder of each Corporate Unit shall pledge, pursuant to the Pledge Agreement, the Debenture or the Applicable Ownership Interest of the Treasury Portfolio, as the case may be, forming a part of such Corporate Unit, to the Collateral Agent and grant to the Collateral Agent a security interest in the right, title, and interest of such Holder in such Debenture or the Applicable Ownership Interest of the Treasury Portfolio, as the case may be, for the benefit of the Company, to secure the obligation of the Holder under each Purchase Contract to purchase the Common Stock of the Company. 24

30 Each Treasury Units Certificate shall evidence the number of Treasury Units specified therein, with each such Treasury Unit representing the ownership by the Holder thereof of a 1/40, or 2.5%, undivided beneficial interest in a Treasury Security with a principal amount at maturity equal to $1,000, subject to the Pledge of such Treasury Security by such Holder pursuant to the Pledge Agreement, and the rights and obligations of the Holder thereof and the Company under one Purchase Contract. The Agent as attorney-in-fact for, and on behalf of, the Holder of each Treasury Unit shall pledge, pursuant to the Pledge Agreement, the Treasury Security to the Collateral Agent and grant to the Collateral Agent a security interest in the right, title and interest of such Holder in such Treasury Security, for the benefit of the Company, to secure the obligation of the Holder under each Purchase Contract to purchase the Common Stock of the Company. Section 3.3. Execution, Authentication, Delivery and Dating. Subject to the provisions of Sections 3.13 and 3.14 hereof, upon the execution and delivery of this Agreement, and at any time and from time to time thereafter, the Company may deliver Certificates executed by the Company to the Agent for authentication, execution on behalf of the Holders and delivery, together with its Issuer Order for authentication of such Certificates, and the Agent in accordance with such Issuer Order shall authenticate, execute on behalf of the Holders and deliver such Certificates. The Certificates shall be executed on behalf of the Company by its Chairman of the Board, its President or one of its Vice Presidents and its Treasurer or one of its Assistant Treasurers or its Secretary or one of its Assistant Secretaries. The signature of any of these officers on the Certificates may be manual or facsimile. Certificates bearing the manual or facsimile signatures of individuals who were at any time the proper officers of the Company shall bind the Company, notwithstanding that such individuals or any of them have ceased to hold such offices prior to the authentication and delivery of such Certificates or did not hold such offices at the date of such Certificates. No Purchase Contract evidenced by a Certificate shall be valid until such Certificate has been executed on behalf of the Holder by the manual signature of an authorized signatory of the Agent, as such Holder's attorney-in-fact. Such signature by an authorized signatory of the Agent shall be conclusive evidence that the Holder of such Certificate has entered into the Purchase Contracts evidenced by such Certificate. 25

31 Each Certificate shall be dated the date of its authentication. No Certificate shall be entitled to any benefit under this Agreement or be valid or obligatory for any purpose unless there appears on such Certificate a certificate of authentication substantially in the form provided for herein executed by an authorized signatory of the Agent by manual signature, and such certificate upon any Certificate shall be conclusive evidence, and the only evidence, that such Certificate has been duly authenticated and delivered hereunder. Section 3.4. Temporary Certificates. Pending the preparation of definitive Certificates, the Company shall execute and deliver to the Agent, and the Agent shall authenticate, execute on behalf of the Holders, and deliver, in lieu of such definitive Certificates, temporary Certificates which are in substantially the form set forth in Exhibit A or Exhibit B hereto, as the case may be, with such letters, numbers or other marks of identification or designation and such legends or endorsements printed, lithographed or engraved thereon as may be required by the rules of any securities exchange on which the Corporate Units or Treasury Units are listed, or as may, consistently herewith, be determined by the officers of the Company executing such Certificates, as evidenced by their execution of the Certificates. If temporary Certificates are issued, the Company will cause definitive Certificates to be prepared without unreasonable delay. After the preparation of definitive Certificates, the temporary Certificates shall be exchangeable for definitive Certificates upon surrender of the temporary Certificates at the Corporate Trust Office or the New York office, at the expense of the Company and without charge to the Holder. Upon surrender for cancellation of any one or more temporary Certificates, the Company shall execute and deliver to the Agent, and the Agent shall authenticate, execute on behalf of the Holder, and deliver in exchange therefor, one or more definitive Certificates of like tenor and denominations and evidencing a like number of Corporate Units or Treasury Units, as the case may be, as the temporary Certificate or Certificates so surrendered. Until so exchanged, the temporary Certificates shall in all respects evidence the same benefits and the same obligations with respect to the Corporate Units or Treasury Units, as the case may be, evidenced thereby as definitive Certificates. 26

32 Section 3.5. Registration; Registration of Transfer and Exchange. The Agent shall keep at the Corporate Trust Office a Register (the "Corporate Units Register") in which, subject to such reasonable regulations as it may prescribe, the Agent shall provide for the registration of Corporate Units Certificates and of transfers of Corporate Units Certificates (the Agent, in such capacity, the "Corporate Units Registrar") and a Register (the "Treasury Units Register") in which, subject to such reasonable regulations as it may prescribe, the Agent shall provide for the registration of Treasury Units Certificates and of transfers of Treasury Units Certificates (the Agent, in such capacity, the "Treasury Units Registrar"). Upon surrender for registration of transfer of any Certificate at the Corporate Trust Office or the New York Office, the Company shall execute and deliver to the Agent, and the Agent shall authenticate, execute on behalf of the designated transferee or transferees, and deliver, in the name of the designated transferee or transferees, one or more new Certificates of any authorized denominations, like tenor, and evidencing a like number of Corporate Units or Treasury Units, as the case may be. At the option of the Holder, Certificates may be exchanged for other Certificates, of any authorized denominations and evidencing a like number of Corporate Units or Treasury Units, as the case may be, upon surrender of the Certificates to be exchanged at the Corporate Trust Office or the New York Office. Whenever any Certificates are so surrendered for exchange, the Company shall execute and deliver to the Agent, and the Agent shall authenticate, execute on behalf of the Holder, and deliver the Certificates which the Holder making the exchange is entitled to receive. All Certificates issued upon any registration of transfer or exchange of a Certificate shall evidence the ownership of the same number of Corporate Units or Treasury Units, as the case may be, and be entitled to the same benefits and subject to the same obligations, under this Agreement as the Corporate Units or Treasury Units, as the case may be, evidenced by the Certificate surrendered upon such registration of transfer or exchange. Every Certificate presented or surrendered for registration of transfer or for exchange shall (if so required by the Agent) be duly endorsed, or be accompanied by a written instrument of transfer in form satisfactory to the Company and the Agent duly executed, by the Holder thereof or its attorney duly authorized in writing. 27

33 No service charge shall be made for any registration of transfer or exchange of a Certificate, but the Company and the Agent may require payment from the Holder of a sum sufficient to cover any tax or other governmental charge that may be imposed in connection with any registration of transfer or exchange of Certificates, other than any exchanges pursuant to Sections 3.4, 3.6, 3.9 and 8.5 not involving any transfer. Notwithstanding the foregoing, the Company shall not be obligated to execute and deliver to the Agent, and the Agent shall not be obligated to authenticate, execute on behalf of the Holder and deliver, any Certificate presented or surrendered for registration of transfer or for exchange on or after the Business Day immediately preceding the earlier of the Purchase Contract Settlement Date or the Termination Date. In lieu of delivery of a new Certificate, upon satisfaction of the applicable conditions specified above in this Section and receipt of appropriate registration or transfer instructions from such Holder, the Agent shall (i) if the Purchase Contract Settlement Date has occurred, deliver the shares of Common Stock issuable in respect of the Purchase Contracts forming a part of the Securities evidenced by such Certificate (together with any cash or other property to which the Holder is entitled), or (ii) if a Termination Event shall have occurred prior to the Purchase Contract Settlement Date, transfer the Debentures, the appropriate Applicable Ownership Interest of the Treasury Portfolio or the Treasury Securities, as the case may be, evidenced thereby, in each case subject to the applicable conditions and in accordance with the applicable provisions of Article Five hereof. Section 3.6. Book-Entry Interests. The Certificates, on original issuance, will be issued in the form of one or more fully registered Global Certificates, to be delivered to the Depositary by, or on behalf of, the Company. Such Global Certificate shall initially be registered on the books and records of the Company in the name of Cede & Co., the nominee of the Depositary, and no Beneficial Owner will receive a definitive Certificate representing such Beneficial Owner's interest in such Global Certificate, except as provided in Section 3.9. The Agent shall enter into an agreement with the Depositary if so requested by the Company. Unless and until definitive, fully registered Certificates have been issued to Beneficial Owners pursuant to Section 3.9: (a) the provisions of this Section 3.6 shall be in full force and effect; 28

34 (b) the Company shall be entitled to deal with the Clearing Agency for all purposes of this Agreement (including receiving approvals, votes or consents hereunder) as the Holder of the Securities and the sole holder of the Global Certificate(s) and shall have no obligation to the Beneficial Owners; (c) to the extent that the provisions of this Section 3.6 conflict with any other provisions of this Agreement, the provisions of this Section 3.6 shall control; and (d) the rights of the Beneficial Owners shall be exercised only through the Clearing Agency and shall be limited to those established by law and agreements between such Beneficial Owners and the Clearing Agency and/or the Clearing Agency Participants. The Clearing Agency will make book entry transfers among Clearing Agency Participants. Section 3.7. Notices to Holders. Whenever a notice or other communication to the Holders is required to be given under this Agreement, the Company or the Company's agent shall give such notices and communications to the Holders and, with respect to any Securities registered in the name of a Clearing Agency or the nominee of a Clearing Agency, the Company or the Company's agent shall, except as set forth herein, have no obligations to the Beneficial Owners. Section 3.8. Appointment of Successor Clearing Agency. If any Clearing Agency elects to discontinue its services as securities depositary with respect to the Securities, the Company may, in its sole discretion, appoint a successor Clearing Agency with respect to the Securities. Section 3.9. Definitive Certificates. If (i) a Clearing Agency elects to discontinue its services as securities depositary with respect to the Securities and a successor Clearing Agency is not appointed within 90 days after such discontinuance pursuant to Section 3.8, (ii) the Company elects to terminate the book-entry system through the Clearing Agency with respect to the Securities, or (iii) there shall have occurred and be continuing a default by the Company in respect of its obligations under one or more Purchase Contracts, or one or more Debentures, then upon surrender of the Global Certificates representing the Book-Entry Interests with respect to the Securities by the Clearing 29

35 Agency, accompanied by registration instructions, the Company shall cause definitive Certificates to be delivered to Beneficial Owners in accordance with the instructions of the Clearing Agency. The Company shall not be liable for any delay in delivery of such instructions and may conclusively rely on and shall be protected in relying on, such instructions. Section 3.10. Mutilated, Destroyed, Lost and Stolen Certificates. If any mutilated Certificate is surrendered to the Agent, the Company shall execute and deliver to the Agent, and the Agent shall authenticate, execute on behalf of the Holder, and deliver in exchange therefor, a new Certificate at the cost of the Holder, evidencing the same number of Corporate Units or Treasury Units, as the case may be, and bearing a Certificate number not contemporaneously outstanding. If there shall be delivered to the Company and the Agent (i) evidence to their satisfaction of the destruction, loss or theft of any Certificate, and (ii) such security or indemnity at the cost of the Holder as may be required by them to hold each of them and any agent of any of them harmless, then, in the absence of notice to the Company or the Agent that such Certificate has been acquired by a bona fide purchaser, the Company shall execute and deliver to the Agent, and the Agent shall authenticate, execute on behalf of the Holder, and deliver to the Holder, in lieu of any such destroyed, lost or stolen Certificate, a new Certificate, evidencing the same number of Corporate Units or Treasury Units, as the case may be, and bearing a Certificate number not contemporaneously outstanding. Notwithstanding the foregoing, the Company shall not be obligated to execute and deliver to the Agent, and the Agent shall not be obligated to authenticate, execute on behalf of the Holder, and deliver to the Holder, a Certificate on or after the Business Day immediately preceding the earlier of the Purchase Contract Settlement Date or the Termination Date. In lieu of delivery of a new Certificate, upon satisfaction of the applicable conditions specified above in this Section and receipt of appropriate registration or transfer instructions from such Holder, the Agent shall (i) if the Purchase Contract Settlement Date has occurred, deliver the shares of Common Stock issuable in respect of the Purchase Contracts forming a part of the Securities evidenced by such Certificate (together with any cash or other property to which the Holder is entitled), or (ii) if a Termination Event shall have occurred prior to the Purchase Contract Settlement Date, transfer the Debentures, the appropriate Applicable Ownership Interest of the Treasury Portfolio or the Treasury Securities, as the case may be, evidenced thereby, in each case subject to the 30

36 applicable conditions and in accordance with the applicable provisions of Article Five hereof. Upon the issuance of any new Certificate under this Section, the Company and the Agent may require the payment by the Holder of a sum sufficient to cover any tax or other governmental charge that may be imposed in relation thereto and any other expenses (including the reasonable fees and expenses of the Agent) connected therewith. Every new Certificate issued pursuant to this Section in lieu of any destroyed, lost or stolen Certificate shall constitute an original additional contractual obligation of the Company and of the Holder in respect of the Security evidenced thereby, whether or not the destroyed, lost or stolen Certificate (and the Securities evidenced thereby) shall be at any time enforceable by anyone, and shall be entitled to all the benefits and be subject to all the obligations of this Agreement equally and proportionately with any and all other Certificates delivered hereunder. The provisions of this Section are exclusive and shall preclude (to the extent lawful) all other rights and remedies with respect to the replacement or payment of mutilated, destroyed, lost or stolen Certificates. Section 3.11. Persons Deemed Owners. Prior to due presentment of a Certificate for registration of transfer, the Company and the Agent, and any agent of the Company or the Agent, may treat the Person in whose name such Certificate is registered as the owner of the Corporate Units or Treasury Units evidenced thereby, for the purpose of receiving interest on the Debentures or on the maturing quarterly interest strips of the Treasury Portfolio, as applicable, performance of the Purchase Contracts and for all other purposes whatsoever, whether or not any interest on the Debentures shall be overdue and notwithstanding any notice to the contrary, and neither the Company nor the Agent, nor any agent of the Company or the Agent, shall be affected by notice to the contrary. Notwithstanding the foregoing, with respect to any Global Certificate, nothing herein shall prevent the Company, the Agent or any agent of the Company or the Agent, from giving effect to any written certification, proxy or other authorization furnished by any Clearing Agency (or its nominee), as a Holder, with respect to such Global Certificate or impair, as between such Clearing Agency and owners of beneficial interests in such Global Certificate, the operation of customary practices 31

37 governing the exercise of rights of such Clearing Agency (or its nominee) as Holder of such Global Certificate. Section 3.12. Cancellation. All Certificates surrendered for delivery of shares of Common Stock on or after the Purchase Contract Settlement Date, upon the transfer of Debentures, the appropriate Applicable Ownership Interest of the Treasury Portfolio or Treasury Securities, as the case may be, after the occurrence of a Termination Event or pursuant to an Early Settlement, or upon the registration of a transfer or exchange of a Security, or a Collateral Substitution or the re-establishment of a Corporate Unit or Treasury Unit shall, if surrendered to any Person other than the Agent, be delivered to the Agent and, if not already cancelled, shall be promptly cancelled by it. The Company may at any time deliver to the Agent for cancellation any Certificates previously authenticated, executed and delivered hereunder which the Company may have acquired in any manner whatsoever, and all Certificates so delivered shall, upon Issuer Order, be promptly cancelled by the Agent. No Certificates shall be authenticated, executed on behalf of the Holder and delivered in lieu of or in exchange for any Certificates cancelled as provided in this Section, except as expressly permitted by this Agreement. All cancelled Certificates held by the Agent shall upon written request be returned to the Company. If the Company or any Affiliate of the Company shall acquire any Certificate, such acquisition shall not operate as a cancellation of such Certificate unless and until such Certificate is delivered to the Agent cancelled or for cancellation. Section 3.13. Establishment of Treasury Units. A Holder may separate the Debentures or the appropriate Applicable Owner ship Interest of the Treasury Portfolio, as applicable, from the related Purchase Contracts in respect of a Corporate Unit by substituting for such Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, Treasury Securities in an aggregate principal amount of such Debentures or the appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such term) of the Treasury Portfolio, as applicable (a "Collateral Substitution"), at any time from and after the date of this Agreement and on or prior to the fifth Business Day immediately preceding the Purchase Contract Settlement Date in the case of the Debentures and on or prior to the second Business Day immediately preceding the Purchase Contract Settlement Date in the case of the appropriate Applicable Ownership Interest of the Treasury Portfolio, in each case by 32

38 (a) depositing with the Collateral Agent Treasury Securities having an aggregate principal amount equal to the aggregate principal amount of the Debentures comprising part of such Corporate Units or the appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such term) of the Treasury Portfolio comprising part of such Corporate Units, as the case may be, and (b) transferring the related Corporate Units to the Agent accompanied by a notice to the Agent, substantially in the form of Exhibit D hereto, stating that the Holder has transferred the relevant amount of Treasury Securities to the Collateral Agent and requesting that the Agent instruct the Collateral Agent to release the Debentures or the appropriate Applicable Owner ship Interest of the Treasury Portfolio, as the case may be, underlying such Corporate Units, whereupon the Agent shall promptly give such instruction to the Collateral Agent, substantially in the form of Exhibit C hereto. Upon receipt of the Treasury Securities described in clause (a) above and the instruction described in clause (b) above, in accordance with the terms of the Pledge Agreement, the Collateral Agent will release to the Agent, on behalf of the Holder, Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, having the appropriate aggregate principal amount in the case of such Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, from the Pledge, free and clear of the Company's security interest therein, and upon receipt thereof the Agent shall promptly: (i) cancel the related Corporate Units; (ii) transfer the Debentures or the appropriate Applicable Owner ship Interest of the Treasury Portfolio, as the case may be, to the Holder; and (iii) authenticate, execute on behalf of such Holder and deliver a Treasury Units Certificate executed by the Company in accordance with Section 3.3 evidencing the same number of Purchase Contracts as were evidenced by the cancelled Corporate Units. Holders who elect to separate the Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, from the related Purchase Contract and to substitute Treasury Securities for such Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, shall be responsible for any fees or expenses payable to the Collateral Agent for its services as Collateral Agent in respect of the substitution, and the Company shall not be responsible for any such fees or expenses. 33

39 Holders may make Collateral Substitutions (i) only in integral multiples of 40 Corporate Units if Debentures are being substituted for by Treasury Securities, or (ii) only in integral multiples of ___ Corporate Units if the appropriate Applicable Ownership Interests of the Treasury Portfolio are being substituted for by Treasury Securities. In the event a Holder making a Collateral Substitution pursuant to this Section 3.13 fails to effect a book-entry transfer of the Corporate Units or fails to deliver a Corporate Units Certificate(s) to the Agent after depositing Treasury Securities with the Collateral Agent, the Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, constituting a part of such Corporate Units, and any interest on such Debenture or the Applicable Ownership Interest of the Treasury Portfolio, as the case may be, shall be held in the name of the Agent or its nominee in trust for the benefit of such Holder, until such Corporate Units are so transferred or the Corporate Units Certificate is so delivered, as the case may be, or, with respect to a Corporate Units Certificate, such Holder provides evidence satisfactory to the Company and the Agent that such Corporate Units Certificate has been destroyed, lost or stolen, together with any indemnity that may be required by the Agent and the Company. Except as described in this Section 3.13, for so long as the Purchase Contract underlying a Corporate Unit remains in effect, such Corporate Unit shall not be separable into its constituent parts, and the rights and obligations of the Holder in respect of the Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, and Purchase Contract comprising such Corporate Unit may be acquired, and may be transferred and exchanged, only as a Corporate Unit. Section 3.14. Reestablishment of Corporate Units. A Holder of a Treasury Unit may recreate Corporate Units at any time (i) on or prior to the fifth Business Day immediately preceding the Purchase Contract Settlement Date, if a Tax Event Redemption or a Successful Initial Remarketing has not occurred, and (ii) on or prior to the second Business Day immediately preceding the Purchase Contract Settlement Date, if a Tax Event Redemption or a Successful Initial Remarketing has occurred and an Applicable Ownership Interest in the Treasury Portfolio has become a component of the Corporate Units, in each case by (a) depositing with the Collateral Agent Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, having an aggregate principal amount in the case of the Debentures, or an appropriate Applicable 34

40 Ownership Interest (as defined in clause (A) of the definition of such term) of the Treasury Portfolio, as the case may be, equal to the aggregate principal amount of the Treasury Securities comprising part of the Treasury Units and (b) transferring the related Treasury Units to the Agent accompanied by a notice to the Agent, substantially in the form of Exhibit D hereto, stating that the Holder has transferred the relevant amount of Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, to the Collateral Agent and requesting that the Agent instruct the Collateral Agent to release the Treasury Securities underlying such Treasury Units, whereupon the Agent shall promptly give such instruction to the Collateral Agent, substantially in the form of Exhibit C hereto. Upon receipt of the Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, described in clause (a) above and the instruction described in clause (b) above, in accordance with the terms of the Pledge Agreement, the Collateral Agent will release to the Agent, on behalf of the Holder, the Treasury Securities having a corresponding aggregate principal amount from the Pledge, free and clear of the Company's security interest therein, and upon receipt thereof the Agent shall promptly: (i) cancel the related Treasury Units; (ii) transfer the Treasury Securities to the Holder; and (iii) authenticate, execute on behalf of such Holder and deliver a Corporate Units Certificate executed by the Company in accordance with Section 3.3 evidencing the same number of Purchase Contracts as were evidenced by the cancelled Treasury Units. Holders of Treasury Units may reestablish Corporate Units in integral multiples of 40 Treasury Units for 40 Corporate Units if a Tax Event Redemption or a Successful Initial Remarketing has not occurred, and in integral multiples of ____ Treasury Units for ___ Corporate Units if a Tax Event Redemption or a Successful Initial Remarketing has occurred. In the event a Holder re-establishing Corporate Units pursuant to this Section 3.14 fails to effect a book-entry transfer of the Treasury Units or fails to deliver a Treasury Units Certificate(s) to the Agent after depositing Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, with the Collateral Agent, the Treasury Securities constituting a part of such Treasury Units shall be held in the name of the Agent or its nominee in trust for the benefit of such Holder, until such Treasury Units are so transferred or the Treasury 35

41 Units Certificate is so delivered, as the case may be, or, with respect to a Treasury Units Certificate, such Holder provides evidence satisfactory to the Company and the Agent that such Treasury Units Certificate has been destroyed, lost or stolen, together with any indemnity that may be required by the Agent and the Company. Except as provided in this Section 3.14, for so long as the Purchase Contract underlying a Treasury Unit remains in effect, such Treasury Unit shall not be separable into its constituent parts and the rights and obligations of the Holder of such Treasury Unit in respect of the Treasury Security and Purchase Contract comprising such Treasury Unit may be acquired, and may be transferred and ex changed, only as a Treasury Unit. Section 3.15. Transfer of Collateral upon Occurrence of Termination Event. Upon the occurrence of a Termination Event and the transfer to the Agent of the Debentures, the appropriate Applicable Ownership Interest of the Treasury Portfolio or the Treasury Securities, as the case may be, underlying the Corporate Units and the Treasury Units pursuant to the terms of the Pledge Agreement, the Agent shall request transfer instructions with respect to such Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio or Treasury Securities, as the case may be, from each Holder by written request mailed to such Holder at its address as it appears in the Corporate Units Register or the Treasury Units Register, as the case may be. Upon book-entry transfer of the Corporate Units or Treasury Units or delivery of a Corporate Units Certificate or Treasury Units Certificate to the Agent with such transfer instructions, the Agent shall transfer the Debentures, the Applicable Ownership Interest of the Treasury Portfolio or Treasury Securities, as the case may be, underlying such Corporate Units or Treasury Units, as the case may be, to such Holder by book-entry transfer, or other appropriate procedures, in accordance with such instructions; provided, however, that, to the extent that a Holder of Corporate Units or Treasury Units would otherwise be entitled to receive less than $1,000 principal amount at maturity of the Treasury Portfolio or the Treasury Securities, the Agent shall dispose of such securities for cash, and transfer the appropriate amount of such cash to such Holder in accordance with such Holder's instructions. In the event a Holder of Corporate Units or Treasury Units fails to effect such transfer or delivery, the Debentures, the appropriate Applicable Owner ship Interest of the Treasury Portfolio or Treasury Securities, as the case may be, underlying such Corporate Units or Treasury Units, as the case may be, and any distributions thereon, shall be held in the name of the Agent or its nominee in trust for the benefit of such Holder, until such Corporate Units or Treasury Units are transferred or the Corporate Units Certificate or Treasury Units Certificate is 36

42 surrendered or such Holder provides satisfactory evidence that such Corporate Units Certificate or Treasury Units Certificate has been destroyed, lost or stolen, together with any indemnity that may be required by the Agent and the Company. Section 3.16. No Consent to Assumption. Each Holder of a Security, by acceptance thereof, shall be deemed expressly to have withheld any consent to the assumption under Section 365 of the Bankruptcy Code or otherwise, of the Purchase Contract by the Company, receiver, liquidator or a person or entity performing similar functions, its trustee in the event that the Company becomes the debtor under the Bankruptcy Code or subject to other similar state or federal law providing for reorganization or liquidation. Section 3.17. CUSIP Numbers The Company in issuing the Securities may use "CUSIP" numbers (if then generally in use), and, if so, the Agent shall use "CUSIP" numbers in notices of redemption as a convenience to Holders; provided that any such notice may state that no representation is made as to the correctness of such numbers either as printed on the Securities or as contained in any notice of a redemption and that reliance may be placed only on the other identification numbers printed on the Securities, and any such redemption shall not be affected by any defect in or omission of such numbers. The Company will promptly notify the Agent of any changes in the "CUSIP" numbers. ARTICLE IV The Debentures Section 4.1. Payment of Distribution; Rights to Distributions Preserved; Distribution Rate Reset; Notice. A distribution on any Debenture or on the appropriate Applicable Ownership Interest in the Treasury Portfolio, as the case may be, which is paid on any Payment Date shall, subject to receipt thereof by the Agent from the Collateral Agent as provided by the terms of the Pledge Agreement, be paid to the Person in whose name the Corporate Units Certificate (or one or more Predecessor Corporate Units Certificates) of which such Debenture or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, is a part is registered at the close of business on the Record Date for such Payment Date. 37

43 Each Corporate Units Certificate evidencing Debentures delivered under this Agreement upon registration of transfer of or in exchange for or in lieu of any other Corporate Units Certificate shall carry the rights to distributions accrued and unpaid, and distributions to accrue, which were or will be carried by the Debentures underlying such other Corporate Units Certificate. In the case of any Corporate Units with respect to which Cash Settlement of the underlying Purchase Contract is effected on the Business Day immediately preceding the Purchase Contract Settlement Date pursuant to prior notice, or with respect to which Early Settlement of the underlying Purchase Contract is effected on an Early Settlement Date, or with respect to which a Collateral Substitution is effected, in each case on a date that is after any Record Date and on or prior to the next succeeding Payment Date, interest on the Debentures or distributions on the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, underlying such Corporate Units otherwise payable on such Payment Date shall be payable on such Payment Date notwithstanding such Cash Settlement or Early Settlement or Collateral Substitution, and such distributions shall, subject to receipt thereof by the Agent, be payable to the Person in whose name the Corporate Units Certificate (or one or more Predecessor Certificates) was registered at the close of business on the Record Date. Except as otherwise expressly provided in the immediately preceding sentence, in the case of any Corporate Units with respect to which Cash Settlement or Early Settlement of the underlying Purchase Contract is effected on the Business Day immediately preceding the Purchase Contract Settlement Date or an Early Settlement Date, as the case may be, or with respect to which a Collateral Substitution has been effected, distributions on the related Debentures or on the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, that would otherwise be payable after the Purchase Contract Settlement Date or Early Settlement Date shall not be payable hereunder to the Holder of such Corporate Units; provided, however, that to the extent that such Holder continues to hold the separated Debentures that formerly comprised a part of such Holder's Corporate Units, such Holder shall be entitled to receive the distributions on such separated Debentures. The applicable Coupon Rate on the Debentures on and after ____, 2003 will be reset on the Initial Remarketing Date to the applicable Reset Rate (such Reset Rate to be in effect on and after ____________________, 2003), except in the event of a Failed Initial Remarketing. In the event of a Failed Initial Remarketing, the applicable Coupon Rate on the Debentures outstanding on and after the Purchase Contract Settlement Date will be reset on the Secondary Remarketing Date to the applicable Reset Rate (such Reset Rate to be in effect on and after the Purchase 38

44 Contract Settlement Date). On the applicable Reset Announcement Date the Reset Spread and the Two-Year Benchmark Treasury or Two and One-Quarter Benchmark Treasury, as applicable, to be used to determine the Reset Rate will be announced by the Company. On the Business Day immediately following the Reset Announcement Date, the Debentures Holders will be notified of such Reset Spread and Two-Year Benchmark Treasury or Two and One-Quarter Benchmark Treasury, as applicable, by the Company. Such notice shall be sufficiently given to Holders of Debentures if published in an Authorized Newspaper in The City of New York. Not later than 7 calendar days nor more than 15 calendar days prior to the Reset Announcement Date, the Company will notify the DTC or its nominee (or any successor Clearing Agency or its nominee) by first-class mail, postage prepaid, to notify the Beneficial Owners or Clearing Agency Participants holding Corporate Units or Treasury Units of such Reset Announcement Date and, in the case of a Secondary Remarketing, the procedures to be followed by Holders of Corporate Units who intend to settle their obligation under the Purchase Contract with separate cash on the Purchase Contract Settlement Date. Section 4.2. Notice and Voting. Under the terms of the Pledge Agreement, the Agent will be entitled to exercise the voting and any other consensual rights pertaining to the Debentures pledged with the Collateral Agent but only to the extent instructed by the Holders as described below. Upon receipt of notice of any meeting at which holders of Debentures are entitled to vote or upon any solicitation of consents, waivers or proxies of holders of Debentures, the Agent shall, as soon as practicable thereafter, mail to the Holders of Corporate Units a notice (a) containing such information as is contained in the notice or solicitation, (b) stating that each Holder on the record date set by the Agent therefor (which, to the extent possible, shall be the same date as the record date for determining the holders of Debentures entitled to vote) shall be entitled to instruct the Agent as to the exercise of the voting rights pertaining to the Debentures underlying their Corporate Units and (c) stating the manner in which such instructions may be given. Upon the written request of the Holders of Corporate Units on such record date, the Agent shall endeavor insofar as practicable to vote or cause to be voted, in accordance with the instructions set forth in such requests, the maximum number of Debentures as to which any particular voting instructions are received. In the absence of specific instructions from the Holder of a Corporate Unit, the Agent shall abstain from voting the Debentures underlying such Corporate Units. The Company hereby agrees, if applicable, to solicit Holders of 39

45 Corporate Units to timely instruct the Agent in order to enable the Agent to vote such Debentures. Section 4.3. Tax Event Redemption. Upon the occurrence of a Tax Event Redemption prior to ____________________, 2003, or in the event of a Failed Initial Remarketing, prior to the Purchase Contract Settlement Date, pursuant to the terms of the Pledge Agreement, the Collateral Agent will apply, out of the aggregate Redemption Price for the Debentures that are components of Corporate Units, an amount equal to the aggregate Redemption Amount for the Debentures that are components of Corporate Units to purchase on behalf of the Holders of Corporate Units the Treasury Portfolio and promptly remit the remaining portion of such Redemption Price to the Agent for payment to the Holders of such Corporate Units. The Treasury Portfolio will be substituted for the pledged Debentures, and will be held by the Collateral Agent in accordance with the terms of the Pledge Agreement to secure the obligation of each Holder of a Corporate Unit to purchase the Common Stock of the Company under the Purchase Contract constituting a part of such Corporate Units. Following the occurrence of a Tax Event Redemption prior to __________, 2003, or, in the event of a Failed Initial Remarketing, prior to the Purchase Contract Settlement Date, the Holders of Corporate Units and the Collateral Agent shall have such security interests, rights and obligations with respect to the Treasury Portfolio as the Holder of Corporate Units and the Collateral Agent had in respect of the Debentures, as the case may be, subject to the Pledge thereof as provided in Sections 2, 3, 4, 5 and 6 of the Pledge Agreement, and any reference herein or in the Certificates to the Debenture shall be deemed to be a reference to such Treasury Portfolio and any reference herein or in the Certificates to interest on the Debentures shall be deemed to be a reference to corresponding distributions on the Treasury Portfolio. The Company may cause to be made in any Corporate Units Certificates thereafter to be issued such change in phraseology and form (but not in substance) as may be appropriate to reflect the substitution of the Treasury Portfolio for Debentures as collateral. Section 4.4. CUSIP Numbers The Company in issuing the Debentures may use "CUSIP" numbers (if then generally in use), and, if so, the Indenture Trustee shall use "CUSIP" numbers in notices of redemption as a convenience to Holders; provided that any such notice may state that no representation is made as to the correctness of such numbers either as printed on the Debentures or as contained in any notice of a redemption and that 40

46 reliance may be placed only on the other identification numbers printed on the Debentures, and any such redemption shall not be affected by any defect in or omission of such numbers. The Company will promptly notify the Indenture Trustee and the Agent of any changes in the "CUSIP" numbers. ARTICLE V The Purchase Contracts Section 5.1. Purchase of Shares of Common Stock. Each Purchase Contract shall, unless an Early Settlement has occurred in accordance with Section 5.9 hereof, obligate the Holder of the related Security to purchase, and the Company to sell, on the Purchase Contract Settlement Date at a price equal to the Stated Amount (the "Purchase Price"), a number of newly issued shares of Common Stock equal to the Settlement Rate unless, on or prior to the Purchase Contract Settlement Date, there shall have occurred a Termination Event with respect to the Security of which such Purchase Contract is a part. The "Settlement Rate" is equal to (a) if the Applicable Market Value (as defined below) is equal to or greater than $_____ (the "Threshold Appreciation Price"), _____ shares of Common Stock per Purchase Contract, (b) if the Applicable Market Value is less than the Threshold Appreciation Price but is greater than $______, the number of shares of Common Stock per Purchase Contract equal to the Stated Amount divided by the Applicable Market Value and (c) if the Applicable Market Value is less than or equal to $_______, _______ shares of Common Stock per Purchase Contract, in each case subject to adjustment as provided in Section 5.6 (and in each case rounded upward or downward to the nearest 1/10,000th of a share). As provided in Section 5.10, no fractional shares of Common Stock will be issued upon settlement of Purchase Contracts. The "Applicable Market Value" means the average of the Closing Price per share of Common Stock on each of the 20 consecutive Trading Days ending on the third Trading Day immediately preceding the Purchase Contract Settlement Date or, for purposes of determining cash payable in lieu of fractional shares in connection with an Early Settlement, the third Trading Day immediately preceding the relevant Early Settlement Date. The "Closing Price" of the Common Stock on any date of determination means the closing sale price (or, if no closing price is reported, the last reported sale price) of the Common Stock on The New York Stock Exchange, Inc. (the "NYSE") on such date or, if the Common Stock is not listed for trading on the 41

47 NYSE on any such date, as reported in the composite transactions for the principal United States securities exchange on which the Common Stock is so listed, or if the Common Stock is not so listed on a United States national or regional securities exchange, as reported by the Nasdaq National Market or, if the Common Stock is not so reported, the last quoted bid price for the Common Stock in the over-the-counter market as reported by the National Quotation Bureau or similar organization, or, if such bid price is not available, the market value of the Common Stock on such date as determined by a nationally recognized independent investment banking firm retained for this purpose by the Company. A "Trading Day" means a day on which the Common Stock (A) is not suspended from trading on any national or regional securities exchange or association or over-the-counter market at the close of business and (B) has traded at least once on the national or regional securities exchange or association or over-the-counter market that is the primary market for the trading of the Common Stock. Each Holder of a Corporate Unit or a Treasury Unit, by its acceptance thereof, irrevocably authorizes the Agent to enter into and perform the related Purchase Contract on its behalf as its attorney-in-fact (including the execution of Certificates on behalf of such Holder), agrees to be bound by the terms and provisions thereof, covenants and agrees to perform its obligations under such Purchase Contracts, and consents to the provisions hereof, irrevocably authorizes the Agent as its attorney-in-fact to enter into and perform the Pledge Agreement on its behalf as its attorney-in-fact, and consents to and agrees to be bound by the Pledge of the Debentures, the Treasury Portfolio or the Treasury Securities pursuant to the Pledge Agreement; provided that upon a Termination Event, the rights of the Holder of such Security under the Purchase Contract may be enforced without regard to any other rights or obligations. Each Holder of a Corporate Unit or Treasury Unit, by its acceptance thereof, further covenants and agrees, that, to the extent and in the manner provided in Section 5.4 and the Pledge Agreement, but subject to the terms thereof, Proceeds of the Treasury Securities, the Debentures or the Treasury Portfolio, as applicable, on the Purchase Contract Settlement Date shall be paid by the Collateral Agent to the Company in satisfaction of such Holder's obligations under such Purchase Contract and such Holder shall acquire no right, title or interest in such Proceeds. Upon registration of transfer of a Certificate, the transferee shall be bound (without the necessity of any other action on the part of such transferee), under the terms of this Agreement, the Purchase Contracts underlying such Certificate and the Pledge Agreement and the transferor shall be released from the obligations under this Agreement, the Purchase Contracts underlying the Certificates so transferred and the 42

48 Pledge Agreement. The Company covenants and agrees, and each Holder of a Certificate, by its acceptance thereof, likewise covenants and agrees, to be bound by the provisions of this paragraph. Section 5.2. [Reserved] Section 5.3. Initial Remarketing. Unless a Tax Event Redemption has occurred, the Company shall engage a nationally recognized investment bank (the "Remarketing Agent") pursuant to the Remarketing Agreement to sell the Debentures of Corporate Unit Holders (the "Initial Remarketing") on the third Business Day immediately preceding _______________, 2003 (the "Initial Remarketing Date"). In order to facilitate the remarketing, the Agent shall notify, by 10:00 a.m., New York City time, on the Business Day immediately preceding the Initial Remarketing Date, the Remarketing Agent of the aggregate principal amount of Debentures to be remarketed. Concurrently, the Collateral Agent, pursuant to the terms of the Pledge Agreement, will present for remarketing such Debentures to the Remarketing Agent. Upon receipt of such notice from the Agent and such Debentures from the Collateral Agent, the Remarketing Agent will, on the Initial Remarketing Date, use its reasonable efforts to remarket such Debentures on such date at a price of approximately 100.5% (but not less than 100%) of the Treasury Portfolio Purchase Price. If the Remarketing Agent is able to remarket the Debentures at a price equal to or greater than 100% of the Treasury Portfolio Purchase Price (a "Successful Initial Remarketing"), the portion of the proceeds from such Successful Initial Remarketing equal to the Treasury Portfolio Purchase Price will be applied to purchase the Treasury Portfolio. In addition, the Remarketing Agent may deduct as a remarketing fee ("Remarketing Fee") an amount not exceeding 25 basis points (0.25%) of the Treasury Portfolio Purchase Price from any amount of such proceeds in excess of the Treasury Portfolio Purchase Price. Any proceeds in excess of those required to pay the Treasury Portfolio Purchase Price and the Remarketing Fee will be remitted to the Agent for payment to the Holders of the related Corporate Units. Corporate Units Holders whose Debentures are so remarketed will not otherwise be responsible for the payment of any Remarketing Fee in connection therewith. The Treasury Portfolio will be substituted for the Debentures of Corporate Unit Holders and will be pledged to the Collateral Agent to secure the Corporate Unit Holders' obligation to pay the Purchase Price for the Common Stock under the related Purchase Contracts on the Purchase Contract Settlement Date. Following the occurrence of a Successful Initial Remarketing, the Holders of Corporate Units and the Collateral Agent shall have such security interests, rights and obligations with 43

49 respect to the Treasury Portfolio as the Holder of Corporate Units and the Collateral Agent had in respect of the Debentures, as the case may be, subject to the Pledge thereof as provided in Sections 2, 3, 4, 5 and 6 of the Pledge Agreement, and any reference herein or in the Certificates to the Debenture shall be deemed to be a reference to such Treasury Portfolio and any reference herein or in the Certificates to interest on the Debentures shall be deemed to be a reference to corresponding distributions on the Treasury Portfolio. The Company may cause to be made in any Corporate Units Certificates thereafter to be issued such change in phraseology and form (but not in substance) as may be appropriate to reflect the substitution of the Treasury Portfolio for Debentures as collateral. If, in spite of using its reasonable efforts, the Remarketing Agent cannot remarket the related Debentures (other than to the Company) of such Holders of Corporate Units at a price not less than 100% of the Treasury Portfolio Purchase Price, the remarketing will be deemed to have failed (a "Failed Initial Remarketing"). The Company will cause a notice of a Failed Initial Remarketing to be published on the second Business Day immediately preceding ___________, 2003 in a daily newspaper in the English language of general circulation in The City of New York, which is expected to be The Wall Street Journal. Section 5.4. Payment of Purchase Price. (a) (i) Unless a Tax Event Redemption, Successful Initial Remarketing, Termination Event or Early Settlement has occurred, each Holder of a Corporate Unit may pay in cash ("Cash Settlement") the Purchase Price for the shares of Common Stock to be purchased pursuant to a Purchase Contract if such Holder notifies the Agent by use of a notice in substantially the form of Exhibit E hereto of its intention to make a Cash Settlement. Such notice shall be made on or prior to 5:00 p.m., New York City time, on the fifth Business Day immediately preceding the Purchase Contract Settlement Date. The Agent shall promptly notify the Collateral Agent of the receipt of such a notice from a Holder intending to make a Cash Settlement. (ii) A Holder of a Corporate Unit who has so notified the Agent of its intention to make a Cash Settlement is required to pay the Purchase Price to the Collateral Agent prior to 11:00 a.m., New York City time, on the Business Day immediately preceding the Purchase Contract Settlement Date in lawful money of the United States by certified or cashiers' check or wire transfer, in each case in immediately available funds payable to or upon the order of the Company. Any cash received by the Collateral Agent will be 44

50 invested promptly by the Collateral Agent in Permitted Investments and paid to the Company on the Purchase Contract Settlement Date in settlement of the Purchase Contract in accordance with the terms of this Agreement and the Pledge Agreement. Any funds received by the Collateral Agent in respect of the investment earnings from the investment in such Permitted Investments, will be distributed to the Agent when received for payment to the Holder. (iii) If a Holder of a Corporate Unit fails to notify the Agent of its intention to make a Cash Settlement in accordance with paragraph (a)(i) above, such failure shall constitute an event of default and the Holder shall be deemed to have consented to the disposition of the pledged Debentures pursuant to the Secondary Remarketing as described in paragraph (b) below. If a Holder of a Corporate Unit does notify the Agent as provided in paragraph (a)(i) above of its intention to pay the Purchase Price in cash, but fails to make such payment as required by paragraph (a)(ii) above, such failure shall also constitute a default; however, the Debentures of such a Holder will not be remarketed but instead the Collateral Agent, for the benefit of the Company, will exercise its rights as a secured party with respect to such Debentures, including but not limited to those rights specified in paragraph (c) below. (b) Unless a Tax Event Redemption or a Successful Initial Remarketing has occurred, the Debentures of Corporate Unit Holders who have not notified the Agent of their intention to effect a Cash Settlement as provided in paragraph (a)(i) above will be sold by the Remarketing Agent (the "Secondary Remarketing") on the third Business Day immediately preceding the Purchase Contract Settlement Date (the "Secondary Remarketing Date"). The Agent shall notify, by 10:00 a.m., New York City time, on the Business Day immediately preceding the Secondary Remarketing Date, the Remarketing Agent of the aggregate principal amount of Debentures to be remarketed. Concurrently, the Collateral Agent, pursuant to the terms of the Pledge Agreement, will present for remarketing such Debentures to the Remarketing Agent. Upon receipt of such notice from the Agent and such Debentures from the Collateral Agent, the Remarketing Agent will, on the Secondary Remarketing Date, use its reasonable efforts to remarket such Debentures on such date at a price of approximately 100.5% (but not less than 100%) of the aggregate principal amount of such Debentures. If the Remarketing Agent is able to remarket the Debentures at a price equal to or greater than 100% of the aggregate principal amount of Debentures (a "Successful Secondary Remarketing"), the Remarketing Agent 45

51 will remit the entire amount of the proceeds from such Successful Secondary Remarketing to the Collateral Agent; provided, however, that the Remarketing Agent may deduct as the Remarketing Fee an amount not exceeding 25 basis points (0.25%) of the aggregate principal amount of the remarketed Debentures from any amount of the proceeds of a Successful Secondary Remarketing in excess of the aggregate principal amount of the remarketed Debentures. The portion of the proceeds equal to the aggregate principal amount of Debentures will automatically be applied by the Collateral Agent, in accordance with the Pledge Agreement, to satisfy in full such Corporate Units holders' obligations to pay the Purchase Price for the Common Stock under the related Purchase Contracts on the Purchase Contract Settlement Date. Any proceeds in excess of those required to pay the Purchase Price and the Remarketing Fee will be remitted to the Agent for payment to the Holders of the related Corporate Units. Corporate Units Holders whose Debentures are so remarketed will not otherwise be responsible for the payment of any Remarketing Fee in connection therewith. If, in spite of using its reasonable efforts, the Remarketing Agent cannot remarket the related Debentures (other than to the Company) of such Holders of Corporate Units at a price not less than 100% of the aggregate principal amount of the Debentures, the remarketing will be deemed to have failed (a "Failed Secondary Remarketing") and in accordance with the terms of the Pledge Agreement the Collateral Agent for the benefit of the Company will exercise its rights as a secured party with respect to such Debentures, including those actions specified in paragraph (c) below. The Company will cause a notice of such Failed Secondary Remarketing to be published on the second Business Day immediately preceding the Purchase Contract Settlement Date in a daily newspaper in the English language of general circulation in The City of New York, which is expected to be The Wall Street Journal. (c) With respect to any Debentures beneficially owned by Holders who have elected Cash Settlement but failed to deliver cash as required in (a)(ii) above, or with respect to Debentures which are subject to a Failed Secondary Remarketing, the Collateral Agent for the benefit of the Company reserves all of its rights as a secured party with respect thereto and, subject to applicable law and paragraph (h) below, may, among other things, (i) retain the Debentures in full satisfaction of the Holders obligations under the Purchase Contracts or (ii) sell the Debentures in one or more public or private sales. 46

52 (d) Unless a Termination Event or an Early Settlement has occurred, the Purchase Contract underlying each Treasury Unit and, if a Tax Event Redemption or a Successful Initial Remarketing has occurred, each Corporate Unit will be settled with the Proceeds at maturity of the Treasury Security or the Applicable Ownership Interest (as defined in clause (A) of the definition of such term) of the Treasury Portfolio, as applicable. Upon receipt of such Proceeds, the Collateral Agent will invest the Proceeds promptly in Permitted Investments and pay the Proceeds to the Company on the Purchase Contract Settlement Date in accordance with the terms of this Agreement and the Pledge Agreement. Any such Proceeds received by the Collateral Agent in excess of the Purchase Price and any funds received by the Collateral Agent in respect of the investment earnings from the investment in such Permitted Investments will be distributed to the Agent when received for payment to the Holder. (e) Any distribution to Holders of excess funds and interest described above, shall be payable at the New York Office maintained for that purpose or, at the option of the Holder, by check mailed to the address of the Person entitled thereto at such address as it appears on the Register. (f) Unless a Holder settles the underlying Purchase Contract through the Early Settlement in the manner described in Section 5.9, the Company shall not be obligated to issue any shares of Common Stock in respect of a Purchase Contract or deliver any certificate therefor to the Holder unless it shall have received payment in full of the Purchase Price for the shares of Common Stock to be purchased thereunder in the manner set forth in this Section 5.4. (g) Upon Cash Settlement of any Purchase Contract, (i) the Collateral Agent will in accordance with the terms of the Pledge Agreement cause the pledged Debentures underlying the relevant Security to be released from the Pledge by the Collateral Agent free and clear of any security interest of the Company and transferred to the Agent for delivery to the Holder thereof or its designee as soon as practicable and (ii) subject to the receipt thereof from the Collateral Agent, the Agent shall, by book-entry transfer, or other appropriate procedures, in accordance with instructions provided by the Holder thereof, transfer such Debentures (or, if no such instructions are given to the Agent by the Holder, the Agent shall hold such Debentures and any distributions thereon in the name of the Agent or its nominee in trust for the benefit of such Holder). 47

53 (h) The obligations of the Holders to pay the Purchase Price are non-recourse obligations and are payable solely out of any Cash Settlement or the Proceeds of any Collateral pledged to secure the obligations of the Holders and in no event will Holders be liable for any deficiency between the Proceeds of Collateral and the Purchase Price. Section 5.5. Issuance of Shares of Common Stock. Unless a Termination Event or an Early Settlement shall have occurred, on the Purchase Contract Settlement Date, upon its receipt of payment in full of the Purchase Price for the shares of Common Stock purchased by the Holders pursuant to the foregoing provisions of this Article and subject to Section 5.6(c), the Company shall issue and deposit with the Agent, for the benefit of the Holders of the Outstanding Securities, one or more certificates representing newly issued shares of Common Stock registered in the name of the Agent (or its nominee) as custodian for the Holders (such certificates for shares of Common Stock, together with any dividends or distributions for which both a record date and payment date for such dividend or distribution has occurred on or after the Purchase Contract Settlement Date, being hereinafter referred to as the "Purchase Contract Settlement Fund") to which the Holders are entitled hereunder. Subject to the foregoing, upon surrender of a Certificate to the Agent on or after the Purchase Contract Settlement Date, together with settlement instructions thereon duly completed and executed, the Holder of such Certificate shall be entitled to receive in exchange therefor a certificate representing that number of whole shares of Common Stock which such Holder is entitled to receive pursuant to the provisions of this Article Five (after taking into account all Securities then held by such Holder) together with cash in lieu of fractional shares as provided in Section 5.10 and any dividends or distributions with respect to such shares constituting part of the Purchase Contract Settlement Fund, but without any interest thereon, and the Certificate so surrendered shall forthwith be cancelled. Such shares shall be registered in the name of the Holder or the Holder's designee as specified in the settlement instructions provided by the Holder to the Agent. If any shares of Common Stock issued in respect of a Purchase Contract are to be registered to a Person other than the Person in whose name the Certificate evidencing such Purchase Contract is registered, no such registration shall be made unless the Person requesting such registration has paid any transfer and other taxes required by reason of such registration in a name other than that of the registered Holder of the Certificate evidencing such Purchase Contract or has established to the satisfaction of the Company that such tax either has been paid or is not payable. 48

54 Section 5.6. Adjustment of Settlement Rate. (a) Adjustments for Dividends, Distributions, Stock Splits, Etc. (1) In case the Company shall pay or make a dividend or other distribution on the Common Stock and Class A Common Stock in Common Stock or Class A Common Stock, the Settlement Rate, as in effect at the opening of business on the day following the date fixed for the determination of stockholders entitled to receive such dividend or other distribution shall be increased by dividing such Settlement Rate by a fraction of which the numerator shall be the number of shares of Common Stock and Class A Common Stock outstanding at the close of business on the date fixed for such determination and the denominator shall be the sum of such number of shares and the total number of shares constituting such dividend or other distribution, such increase to become effective immediately after the opening of business on the day following the date fixed for such determination. For the purposes of this paragraph (1), the number of shares of Common Stock and Class A Common Stock at any time outstanding shall not include shares held in the treasury of the Company but shall include any shares issuable in respect of any scrip certificates issued in lieu of fractions of shares of Common Stock and Class A Common Stock. The Company will not pay any dividend or make any distribution on shares of Common Stock or Class A Common Stock held in the treasury of the Company. (2) In case the Company shall issue rights, options or warrants to all holders of its Common Stock and Class A Common Stock (not being available on an equivalent basis to Holders of the Securities upon settlement of the Purchase Contracts underlying such Securities) entitling them, for a period expiring within 45 days after the record date for the determination of stockholders entitled to receive such rights, options or warrants, to subscribe for or purchase shares of Common Stock or Class A Common Stock at a price per share less than the Current Market Price per share of the Common Stock on the date fixed for the determination of stockholders entitled to receive such rights, options or warrants (other than pursuant to a dividend reinvestment plan or share purchase plan), the Settlement Rate in effect at the opening of business on the day following the date fixed for such determination shall be increased by dividing such Settlement Rate by a fraction of which the numerator shall be the number of shares of Common Stock and Class A Common Stock outstanding at the close of business on the date fixed for such determination plus the number of shares of Common Stock which the aggregate offering price of the total number of shares of Common Stock or Class A Common Stock so offered for subscription or purchase would purchase at such Current Market 49

55 Price and the denominator shall be the number of shares of Common Stock and Class A Common Stock outstanding at the close of business on the date fixed for such determination plus the number of shares of Common Stock or Class A Common Stock so offered for subscription or purchase, such increase to become effective immediately after the opening of business on the day following the date fixed for such determination. For the purposes of this paragraph (2), the number of shares of Common Stock and Class A Common Stock at any time outstanding shall not include shares held in the treasury of the Company but shall include any shares issuable in respect of any scrip certificates issued in lieu of fractions of shares of Common Stock or Class A Common Stock. The Company shall not issue any such rights, options or warrants in respect of shares of Common Stock or Class A Common Stock held in the treasury of the Company. (3) In case outstanding shares of Common Stock and Class A Common Stock shall be subdivided or split into a greater number of shares of Common Stock and Class A Common Stock, the Settlement Rate in effect at the opening of business on the day following the day upon which such subdivision or split becomes effective shall be proportionately increased, and, conversely, in case outstanding shares of Common Stock and Class A Common Stock shall each be combined into a smaller number of shares of Common Stock and Class A Common Stock, the Settlement Rate in effect at the opening of business on the day following the day upon which such combination becomes effective shall be proportionately reduced, such increase or reduction, as the case may be, to become effective immediately after the opening of business on the day following the day upon which such subdivision, split or combination becomes effective. (4) In case the Company shall, by dividend or otherwise, distribute to all holders of its Common Stock and Class A Common Stock evidences of its indebtedness, shares of capital stock, securities, cash or other property (but excluding any rights or warrants referred to in paragraph (2) of this Section, any dividend or distribution paid exclusively in cash and any dividend or distribution referred to in paragraph (1) of this Section), the Settlement Rate shall be increased so that the same shall equal the rate determined by dividing the Settlement Rate in effect immediately prior to the close of business on the date fixed for the determination of stockholders entitled to receive such distribution by a fraction of which the numerator shall be the Current Market Price per share of the Common Stock on the date fixed for such determination less the then fair market value (as determined by the Board of Directors, whose determination shall be conclusive and described in a Board Resolution filed with the Agent) on such date of the portion of the evidences of indebtedness, shares of capital stock, securities, cash or other property so distributed 50

56 applicable to one share of Common Stock and the denominator shall be such Current Market Price per share of the Common Stock, such adjustment to become effective immediately prior to the opening of business on the day following the date fixed for the determination of stockholders entitled to receive such distribution. In any case in which this paragraph (4) is applicable, paragraph (2) of this Section shall not be applicable. (5) In case the Company shall, (I) by dividend or otherwise, distribute to all holders of its Common Stock and Class A Common Stock cash (excluding (i) any cash that is distributed in a Reorganization Event to which Section 5.6(c) applies or (ii) cash that is distributed as part of a distribution referred to in paragraph (4) of this Section) in an aggregate amount that, combined together with (II) the aggregate amount of any other distributions to all holders of its Common Stock and Class A Common Stock made exclusively in cash within the 12 months preceding the date of payment of such distribution and in respect of which no adjustment pursuant to this paragraph (5) or paragraph (6) of this Section has been made and (III) the aggregate of any cash plus the fair market value, as of the expiration of the applicable tender or exchange offer referred to below (as determined by the Board of Directors, whose determination shall be conclusive and described in a Board Resolution), of consideration payable in respect of any tender or exchange offer (other than consideration payable in respect of any odd-lot tender offer) by the Company or any of its subsidiaries for all or any portion of the Common Stock or Class A Common Stock concluded within the 12 months preceding the date of payment of the distribution described in clause (I) above and in respect of which no adjustment pursuant to this paragraph (5) or paragraph (6) of this Section has been made, exceeds 15% of the product of the Current Market Price per share of the Common Stock on the date for the determination of holders of shares of Common Stock entitled to receive such distribution times the number of shares of Common Stock and Class A Common Stock outstanding on such date, then, and in each such case, immediately after the close of business on such date for determination, the Settlement Rate shall be increased so that the same shall equal the rate determined by dividing the Settlement Rate in effect immediately prior to the close of business on the date fixed for determination of the stockholders entitled to receive such distribution by a fraction (i) the numerator of which shall be equal to the Current Market Price per share of the Common Stock on the date fixed for such determination less an amount equal to the quotient of (x) the combined amount distributed or payable in the transactions described in clauses (I), (II) and (III) above and (y) the number of shares of Common Stock and Class A Common Stock outstanding on such date for determination and (ii) the denominator of which shall be 51

57 equal to the Current Market Price per share of the Common Stock on such date for determination. (6) In case (I) a tender or exchange offer made by the Company or any subsidiary of the Company for all or any portion of the Common Stock or Class A Common Stock shall expire and such tender or exchange offer (as amended upon the expiration thereof) shall require the payment to stockholders (based on the acceptance (up to any maximum specified in the terms of the tender or exchange offer) of Purchased Shares) of an aggregate consideration having a fair market value (as determined by the Board of Directors, whose determination shall be conclusive and described in a Board Resolution) that combined together with (II) the aggregate of the cash plus the fair market value (as determined by the Board of Directors, whose determination shall be conclusive and described in a Board Resolution), as of the expiration of such tender or exchange offer, of consideration payable in respect of any other tender or exchange offer (other than consideration payable in respect of any odd-lot tender offer) by the Company or any subsidiary of the Company for all or any portion of the Common Stock or Class A Common Stock expiring within the 12 months preceding the expiration of such tender or exchange offer and in respect of which no adjustment pursuant to paragraph (5) of this Section or this paragraph (6) has been made and (III) the aggregate amount of any distributions to all holders of the Company's Common Stock and Class A Common Stock made exclusively in cash within the 12 months preceding the expiration of such tender or exchange offer and in respect of which no adjustment pursuant to paragraph (5) of this Section or this paragraph (6) has been made, exceeds 15% of the product of the Current Market Price per share of the Common Stock as of the last time (the "Expiration Time") tenders could have been made pursuant to such tender or exchange offer (as it may be amended) times the number of shares of Common Stock and Class A Common Stock outstanding (including any tendered shares) on the Expiration Time, then, and in each such case, immediately prior to the opening of business on the day after the date of the Expiration Time, the Settlement Rate shall be adjusted so that the same shall equal the rate determined by dividing the Settlement Rate immediately prior to the close of business as of the Expiration Time by a fraction (i) the numerator of which shall be equal to (A) the product of (I) the Current Market Price per share of the Common Stock as of the Expiration Time and (II) the number of shares of Common Stock and Class A Common Stock outstanding (including any tendered shares) as of the Expiration Time less (B) the amount of cash plus the fair market value (determined as aforesaid) of the aggregate consideration payable to stockholders based on the transactions described in clauses (I), (II) and (III) above (assuming in the case of clause (I) the acceptance, up to any maximum specified in the terms of the tender or exchange offer, of Purchased Shares), and (ii) the denominator of which 52

58 shall be equal to the product of (A) the Current Market Price per share of the Common Stock as of the Expiration Time and (B) the number of shares of Common Stock and Class A Common Stock outstanding (including any tendered shares) as of the Expiration Time less the number of all shares validly tendered and not withdrawn as of the Expiration Time (the shares deemed so accepted, up to any such maximum, being referred to as the "Purchased Shares"). (7) The issuance or distribution by the Company of its securities in connection with any exchange offer, recapitalization, reorganization or similar transaction (a "Recapitalization Transaction") effected by the Company in order to facilitate a tax-free distribution by Xcel Energy Inc. of its interest in the Company will not be deemed to require an adjustment to the Settlement Rate pursuant to paragraphs (1)-(6) of this Section, provided that (i) the securities issued or distributed in respect of any share of Common Stock in such Recapitalization Transaction do not represent an economic interest in the Company that is greater than the economic interest in the Company represented by a share of Common Stock immediately prior to the consummation of such Recapitalization Transaction and (ii) the Company does not pay a cash premium to any holders of Common Stock in connection with such transaction. (8) The "Current Market Price" per share of Common Stock on any day means the average of the daily Closing Prices for the five consecutive Trading Days selected by the Company commencing not more than 30 Trading Days before, and ending not later than, the earlier of the day in question and the day before the "ex date" with respect to the issuance or distribution requiring such computation. For purposes of this paragraph, the term "ex date", when used with respect to any issuance or distribution, shall mean the first date on which the Common Stock trades regular way on such exchange or in such market without the right to receive such issuance or distribution. (9) All adjustments to the Settlement Rate, shall be calculated to the nearest 1/10,000th of a share of Common Stock (or if there is not a nearest 1/10,000th of a share to the next lower 1/10,000th of a share). No adjustment in the Settlement Rate shall be required unless such adjustment would require an increase or decrease of at least one percent therein; provided, however, that any adjustments which by reason of this subparagraph are not required to be made shall be carried forward and taken into account in any subsequent adjustment. [If an adjustment is made to the Settlement Rate pursuant to paragraph (1), (2), (3), (4), (5), (6), (7) or (10) of this Section 5.6(a), an adjustment shall also be made to the Applicable Market Value solely to determine which of clauses (a), (b) or (c) of the definition of 53

59 Settlement Rate in Section 5.1 will apply on the Purchase Contract Settlement Date. Such adjustment shall be made by multiplying the Applicable Market Value by a fraction of which the numerator shall be the Settlement Rate immediately after such adjustment pursuant to paragraph (1), (2), (3), (4), (5), (6), (7) or (10) of this Section 5.6(a) and the denominator shall be the Settlement Rate immediately before such adjustment; provided, however, that if such adjustment to the Settlement Rate is required to be made pursuant to the occurrence of any of the events contemplated by paragraph (1), (2), (3), (4), (5), (7) or (10) of this Section 5.6(a) during the period taken into consideration for determining the Applicable Market Value, appropriate and customary adjustments shall be made to the Settlement Rate.] (10) The Company may make such increases in the Settlement Rate, in addition to those required by this Section, as it considers to be advisable in order to avoid or diminish any income tax to any holders of shares of Common Stock resulting from any dividend or distribution of stock or issuance of rights or warrants to purchase or subscribe for stock or from any event treated as such for income tax purposes or for any other reasons. (b) Adjustment for Certain Recapitalization Transactions. (1) If the Company completes a Recapitalization Transaction pursuant to which some, but not all, of the shares of Common Stock outstanding immediately prior to such transaction are exchanged for or converted, changed or reclassified into other Common Equity Securities, then thereafter each Holder of Securities will receive on the Purchase Contract Settlement Date with respect to each Purchase Contract forming a part thereof, at such Holder's election, either (i) shares of Common Stock at a Settlement Rate equal to the Settlement Rate in effect immediately prior to such Recapitalization Transaction as adjusted in accordance with subsection (a) of this Section 5.6 (A) for any premium paid to holders of Common Stock in such Recapitalization Transaction other than in the form of such other Common Equity Securities representing a greater economic interest in the Company than the shares of Common Stock in respect of which such Common Equity Securities were issued (but without adjustment for any such premium paid in the form of such other Common Equity Securities) and (B) for any transactions or events occurring after such Recapitalization Transaction that require an adjustment to the Settlement Rate under subsection (a) of this Section 5.6 or (ii) shares of such other Common Equity Securities at a Settlement Rate determined under Section 5.1 based on the Applicable Market Value of such other Common Equity Securities and equal to the Settlement Rate in effect immediately prior to such Recapitalization Transaction multiplied by the number of such other Common Equity Securities 54

60 issued in respect of one share of Common Stock in such Recapitalization Transaction and as adjusted in accordance with subsection (a) of this Section 5.6 (A) for any premium paid to holders of Common Stock in such Recapitalization Transaction other than in the form of such other Common Equity Securities and (B) for any transactions or events occurring after such Recapitalization Transaction that require an adjustment to the Settlement Rate under subsection (a) of this Section 5.6, with the provisions of such subsection applying to events relating to such other Common Equity Securities to the same extent as they apply to events relating to the Common Stock. In the event that any Recapitalization Transaction of the type contemplated by this paragraph (1) occurs, the Company shall, at least 30 Business Days prior to the Purchase Contract Settlement Date, provide each Holder with an election form pursuant to which the Holder may elect to receive either Common Stock or the other Common Equity Securities upon settlement of the Purchase Contracts as provided in this paragraph (1). Any Holder for whom the Company has not received a completed election form on or before the Business Day immediately preceding the Purchase Contract Settlement Date will be deemed to have elected to receive Common Stock. (2) If the Company completes a Recapitalization Transaction pursuant to which all of the shares of Common Stock outstanding immediately prior to such transaction are exchanged for or converted, changed or reclassified into shares of other Common Equity Securities, then thereafter each Holder of Securities will receive on the Purchase Contract Settlement Date with respect to each Purchase Contract forming a part thereof only such other Common Equity Securities at a Settlement Rate determined under Section 5.1 based on the Applicable Market Value of such other Common Equity Securities and equal to the Settlement Rate in effect immediately prior to such Recapitalization Transaction multiplied by the number of such other Common Equity Securities issued in respect of one share of Common Stock in such Recapitalization Transaction and as adjusted in accordance with subsection (a) of this Section 5.6 (A) for any premium paid to holders of Common Stock in such Recapitalization Transaction other than in the form of such other Common Equity Securities and (B) for any transactions or events occurring after such Recapitalization Transaction that require an adjustment to the Settlement Rate under subsection (a) of this Section 5.6, with the provisions of such subsection applying to events relating to such other Common Equity Securities to the same extent as they apply to events relating to the Common Stock. (c) Adjustment for Consolidation, Merger or Other Reorganization Event. In the event of (i) any Recapitalization Transaction pursuant to which all outstanding shares of Common Stock are exchanged for or converted, changed or reclassified into cash, securities or other property not including Common Equity Securities, (ii) 55

61 any consolidation or merger of the Company with or into another Person (other than a merger or consolidation in which the Company is the continuing corporation and in which the Common Stock outstanding immediately prior to the merger or consolidation is not exchanged for cash, securities or other property of the Company or another corporation), (iii) any sale, transfer, lease or conveyance to another Person of the property of the Company as an entirety or substantially as an entirety, (iv) any statutory exchange of securities of the Company with another Person (other than in connection with a merger or acquisition) or (v) any liquidation, dissolution or winding up of the Company other than as a result of or after the occurrence of a Termination Event (any such event, a "Reorganization Event"), the Settlement Rate will be adjusted to provide that each Holder of Securities will receive on the Purchase Contract Settlement Date with respect to each Purchase Contract forming a part thereof (or upon any Early Settlement), the kind and amount of securities, cash and other property receivable upon such Reorganization Event (without any interest thereon, and without any right to dividends or distribution thereon which have a record date that is prior to the Purchase Contract Settlement Date) by a Holder of the number of shares of Common Stock issuable on account of each Purchase Contract if the Purchase Contract Settlement Date had occurred immediately prior to such Reorganization Event assuming such Holder of Common Stock is not a Person with which the Company consolidated or into which the Company merged or which merged into the Company or to which such sale or transfer was made, as the case may be (any such Person, a "Constituent Person"), or an Affiliate of a Constituent Person to the extent such Reorganization Event provides for different treatment of Common Stock held by Affiliates of the Company and non-affiliates and such Holder failed to exercise its rights of election, if any, as to the kind or amount of securities, cash and other property receivable upon such Reorganization Event (provided that if the kind or amount of securities, cash and other property receivable upon such Reorganization Event is not the same for each share of Common Stock held immediately prior to such Reorganization Event by other than a Constituent Person or an Affiliate thereof and in respect of which such rights of election shall not have been exercised ("non-electing share"), then for the purpose of this Section the kind and amount of securities, cash and other property receivable upon such Reorganization Event by each non-electing share shall be deemed to be the kind and amount so receivable per share by the non-electing shares). In the event of such a Reorganization Event described in clauses (ii)-(v) above, the Person formed by such consolidation, merger or exchange or the Person which acquires or leases the assets of the Company or, in the event of a liquidation or dissolution of the Company, the Company or a liquidating trust created in connection therewith, shall execute and deliver to the Agent an agreement supplemental hereto providing that the Holders of each Outstanding Security shall have the rights provided by this Section 5.6. Such 56

62 supplemental agreement shall provide for adjustments which, for events subsequent to the effective date of such supplemental agreement, shall be as nearly equivalent as may be practicable to the adjustments provided for in this Section. In the event of a Reorganization Event described in clause (i) above, the adjustment provisions of this Section shall apply to the extent practicable to any securities issued in the Recapitalization Transaction. The above provisions of this Section shall similarly apply to successive Reorganization Events. Section 5.7. Notice of Adjustments and Certain Other Events. (a) Whenever the Settlement Rate is adjusted as herein provided, the Company shall: (i) forthwith compute the Settlement Rate in accordance with Section 5.6 and prepare and transmit to the Agent an Officer's Certificate setting forth the Settlement Rate, the method of calculation thereof in reason able detail, and the facts requiring such adjustment and upon which such adjustment is based; and (ii) within 10 Business Days following the occurrence of an event that requires an adjustment to the Settlement Rate pursuant to Section 5.6 (or if the Company is not aware of such occurrence, as soon as practicable after becoming so aware), provide a written notice to the Holders of the Securities of the occurrence of such event and a statement in reasonable detail setting forth the method by which the adjustment to the Settlement Rate was deter mined and setting forth the adjusted Settlement Rate. (b) The Agent shall not at any time be under any duty or responsibility to any Holder of Securities to determine whether any facts exist which may require any adjustment of the Settlement Rate, or with respect to the nature or extent or calculation of any such adjustment when made, or with respect to the method employed in making the same. The Agent shall not be accountable with respect to the validity or value (or the kind or amount) of any shares of Common Stock, or of any securities or property, which may at the time be issued or delivered with respect to any Purchase Contract; and the Agent makes no representation with respect thereto. The Agent shall not be responsible for any failure of the Company to issue, transfer or deliver any shares of Common Stock pursuant to a Purchase Contract or to comply with any of the duties, responsibilities or covenants of the Company contained in this Article. 57

63 Section 5.8. Termination Event; Notice. The Purchase Contracts and all obligations and rights of the Company and the Holders thereunder, including, without limitation, the rights and obligations of Holders to purchase Common Stock, shall immediately and automatically terminate, without the necessity of any notice or action by any Holder, the Agent or the Company, if, on or prior to the Purchase Contract Settlement Date, a Termination Event shall have occurred. Upon and after the occurrence of a Termination Event, the Securities shall thereafter represent the right to receive the Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, forming a part of such Securities in the case of Corporate Units, or Treasury Securities in the case of Treasury Units, in accordance with the provisions of Section 4.3 of the Pledge Agreement; provided, however, that, to the extent that a Holder of Corporate Units or Treasury Units would otherwise be entitled to receive less than $1,000 principal amount at maturity of the Treasury Portfolio or the Treasury Securities, the Agent shall dispose of such securities for cash, and transfer the appropriate amount of such cash to such Holder in accordance with such Holder's instructions. Upon the occurrence of a Termination Event, the Company shall promptly but in no event later than two Business Days thereafter give written notice to the Agent, the Collateral Agent and to the Holders, at their addresses as they appear in the Register. Section 5.9. Early Settlement. (a) Subject to and upon compliance with the provisions of this Section 5.9, at the option of the Holder thereof, Purchase Contracts underlying Securities having an aggregate Stated Amount equal to $1,000 or an integral multiple thereof may be settled early ("Early Settlement") in the case of Corporate Units (unless a Tax Event Redemption or a Successful Initial Remarketing has occurred) on or prior to the fifth Business Day immediately preceding the Purchase Contract Settlement Date and in the case of Treasury Units on or prior to the second Business Day immediately preceding the Purchase Contract Settlement Date, in each case, as provided herein; provided however, that if a Tax Event Redemption or a Successful Initial Remarketing has occurred and the Treasury Portfolio has become a component of the Corporate Units, Purchase Contracts underlying Corporate Units may be settled early on or prior to the second Business Day immediately preceding the Purchase Contract Settlement Date, but only in an aggregate amount of ____ Corporate Units or in an integral multiple thereof. In order to exercise the right to effect Early Settlement with respect to any Purchase Contracts, the Holder of the Certificate evidencing Securities shall deliver such Certificate to the Agent at the Corporate Trust Office or 58

64 the New York Office duly endorsed for transfer to the Company or in blank with the form of Election to Settle Early on the reverse thereof duly completed and accompanied by payment (payable to the Company) in immediately available funds in an amount (the "Early Settlement Amount") equal to the product of (i) the Stated Amount times (ii) the number of Purchase Contracts with respect to which the Holder has elected to effect Early Settlement. No payment or adjustment shall be made upon Early Settlement of any Purchase Contract on account of any dividends on the Common Stock issued upon such Early Settlement. If the foregoing requirements are first satisfied with respect to Purchase Contracts underlying any Securities at or prior to 5:00 p.m., New York City time, on a Business Day, such day shall be the "Early Settlement Date" with respect to such Securities and if such requirements are first satisfied after 5:00 p.m., New York City time, on a Business Day or on a day that is not a Business Day, the "Early Settlement Date" with respect to such Securities shall be the next succeeding Business Day. (b) Upon Early Settlement of Purchase Contracts by a Holder of the related Securities and payment of any transfer or similar taxes payable by such Holder in connection with the issuance of the related Common Stock to any person other than such Holder, the Company shall issue, and the Holder shall be entitled to receive, _____ shares of newly issued Common Stock on account of each Purchase Contract as to which Early Settlement is effected (the "Early Settlement Rate"). The Early Settlement Rate shall be adjusted in the same manner and at the same time as the Settlement Rate is adjusted. As promptly as practicable after Early Settlement of Purchase Contracts in accordance with the provisions of this Section 5.9, the Company shall issue and shall deliver to the Agent at the Corporate Trust Office a certificate or certificates for the full number of shares of Common Stock issuable upon such Early Settlement together with payment in lieu of any fraction of a share, as provided in Section 5.10. (c) No later than the third Business Day after the applicable Early Settlement Date the Company shall cause (i) the shares of Common Stock issuable upon Early Settlement of Purchase Contracts to be issued and delivered, and (ii) the related Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, in the case of Corporate Units, or the related Treasury Securities, in the case of Treasury Units, to be released from the Pledge by the Collateral Agent and transferred, in each case to the Agent for delivery to the Holder thereof or its designee. 59

65 (d) Upon Early Settlement of any Purchase Contracts, and subject to receipt of shares of Common Stock from the Company and the Debentures, the appropriate Applicable Ownership Interest of the Treasury Portfolio or Treasury Securities, as the case may be, from the Collateral Agent, as applicable, the Agent shall, in accordance with the instructions provided by the Holder thereof on the applicable form of Election to Settle Early on the reverse of the Certificate evidencing the related Securities, (i) transfer to the Holder the Debentures, Treasury Portfolio or Treasury Securities, as the case may be, forming a part of such Securities, and (ii) deliver to the Holder a certificate or certificates for the full number of shares of Common Stock issuable upon such Early Settlement together with payment in lieu of any fraction of a share, as provided in Section 5.10. (e) In the event that Early Settlement is effected with respect to Purchase Contracts underlying less than all the Securities evidenced by a Certificate, upon such Early Settlement the Company shall execute and the Agent shall authenticate, countersign and deliver to the Holder thereof, at the expense of the Company, a Certificate evidencing the Securities as to which Early Settlement was not effected. Section 5.10. No Fractional Shares. No fractional shares or scrip representing fractional shares of Common Stock shall be issued or delivered upon settlement on the Purchase Contract Settlement Date or upon Early Settlement of any Purchase Contracts. If Certificates evidencing more than one Purchase Contract shall be surrendered for settlement at one time by the same Holder, the number of full shares of Common Stock which shall be delivered upon settlement shall be computed on the basis of the aggregate number of Purchase Contracts evidenced by the Certificates so surrendered. Instead of any fractional share of Common Stock which would otherwise be deliverable upon settlement of any Purchase Contracts on the Purchase Contract Settlement Date or upon Early Settlement, the Company, through the Agent, shall make a cash payment in respect of such fractional interest in an amount equal to the value of such fractional shares times the Applicable Market Value. The Company shall provide the Agent from time to time with sufficient funds to permit the Agent to make all cash payments required by this Section 5.10 in a timely manner. Section 5.11. Charges and Taxes. The Company will pay all stock transfer and similar taxes attributable to the initial issuance and delivery of the shares of Common Stock pursuant to the Purchase Contracts; provided, however, that the Company shall not be required to pay any 60

66 such tax or taxes which may be payable in respect of any exchange of or substitution for a Certificate evidencing a Security or any issuance of a share of Common Stock in a name other than that of the registered Holder of a Certificate surrendered in respect of the Securities evidenced thereby, other than in the name of the Agent, as custodian for such Holder, and the Company shall not be required to issue or deliver such share certificates or Certificates unless or until the Person or Persons requesting the transfer or issuance thereof shall have paid to the Company the amount of such tax or shall have established to the satisfaction of the Company that such tax has been paid or that no such tax is due. ARTICLE VI Remedies Section 6.1. Unconditional Right of Holders to Purchase Common Stock. The Holder of any Corporate Units or Treasury Units shall have the right, which is absolute and unconditional, to purchase Common Stock pursuant to such Purchase Contract and to institute suit for the enforcement of such right to purchase Common Stock, and such right shall not be impaired without the consent of such Holder. Section 6.2. Restoration of Rights and Remedies. If any Holder has instituted any proceeding to enforce any right or remedy under this Agreement and such proceeding has been discontinued or abandoned for any reason, or has been determined adversely to such Holder, then and in every such case, subject to any determination in such proceeding, the Company and such Holder shall be restored severally and respectively to their former positions hereunder and thereafter all rights and remedies of such Holder shall continue as though no such proceeding had been instituted. Section 6.3. Rights and Remedies Cumulative. Except as otherwise provided with respect to the replacement or payment of mutilated, destroyed, lost or stolen Certificates in the last paragraph of Section 3.10, no right or remedy herein conferred upon or reserved to the Holders is intended to be exclusive of any other right or remedy, and every right and 61

67 remedy shall, to the extent permitted by law, be cumulative and in addition to every other right and remedy given hereunder or now or hereafter existing at law or in equity or otherwise. The assertion or employment of any right or remedy hereunder, or otherwise, shall not prevent the concurrent assertion or employment of any other appropriate right or remedy. Section 6.4. Delay or Omission Not Waiver. No delay or omission of any Holder to exercise any right or remedy upon a default shall impair any such right or remedy or constitute a waiver of any such right. Every right and remedy given by this Article or by law to the Holders may be exercised from time to time, and as often as may be deemed expedient, by such Holders. Section 6.5. Undertaking for Costs. All parties to this Agreement agree, and each Holder of Corporate Units or Treasury Units, by its acceptance of such Corporate Units or Treasury Units shall be deemed to have agreed, that any court may in its discretion require, in any suit for the enforcement of any right or remedy under this Agreement, or in any suit against the Agent for any action taken, suffered or omitted by it as Agent, the filing by any party litigant in such suit of an undertaking to pay the costs of such suit, and that such court may in its discretion assess reasonable costs, including reasonable attorneys' fees, against any party litigant in such suit, having due regard to the merits and good faith of the claims or defenses made by such party litigant; provided that the provisions of this Section shall not apply to any suit instituted by the Company, to any suit instituted by the Agent, to any suit instituted by any Holder, or group of Holders, holding in the aggregate more than 10% of the Outstanding Securities, or to any suit instituted by any Holder for the enforcement of interest on any Debentures on or after the respective Payment Date therefor in respect of any Security held by such Holder, or for enforcement of the right to purchase shares of Common Stock under the Purchase Contracts constituting part of any Security held by such Holder. Section 6.6. Waiver of Stay or Extension Laws. The Company covenants (to the extent that it may lawfully do so) that it will not at any time insist upon, or plead, or in any manner whatsoever claim or take the benefit or advantage of, any stay or extension law wherever enacted, now or at any time hereafter in force, which may affect the covenants or the performance of this Agreement; and the Company (to the extent that it may lawfully do so) hereby expressly waives all benefit or advantage of any such law and covenants that it will 62

68 not hinder, delay or impede the execution of any power herein granted to the Agent or the Holders, but will suffer and permit the execution of every such power as though no such law had been enacted. ARTICLE VII The Agent Section 7.1. Certain Duties and Responsibilities. (a) (1) The Agent undertakes to perform, with respect to the Securities, such duties and only such duties as are specifically set forth in this Agreement and the Pledge Agreement, and no implied covenants or obligations shall be read into this Agreement against the Agent; and (2) The Agent may, with respect to the Securities, conclusively rely, as to the truth of the statements and the correctness of the opinions expressed therein, upon certificates or opinions furnished to the Agent and conforming to the requirements of this Agreement, but in the case of any certificates or opinions which by any provision hereof are specifically required to be furnished to the Agent, the Agent shall be under a duty to examine the same to determine whether or not they conform to the requirements of this Agreement, but need not confirm or investigate the accuracy of mathematical calculations stated therein. (b) No provision of this Agreement shall be construed to relieve the Agent from liability for its own negligent action, its own negligent failure to act, or its own wilful misconduct or bad faith, except that (1) this Subsection shall not be construed to limit the effect of Subsection (a) of this Section; (2) the Agent shall not be liable for any error of judgment made in good faith by a Responsible Officer, unless it shall be proved that the Agent was negligent in ascertaining the pertinent facts; and (3) no provision of this Agreement shall require the Agent to expend or risk its own funds or otherwise incur any financial liability in the 63

69 performance of any of its duties hereunder, or in the exercise of any of its rights or powers. (c) Whether or not therein expressly so provided, every provision of this Agreement relating to the conduct or affecting the liability of or affording protection to the Agent shall be subject to the provisions of this Section. (d) The Agent is authorized to execute and deliver the Pledge Agreement in its capacity as Agent. Section 7.2. Notice of Default. Within 30 days after the occurrence of any default by the Company hereunder of which a Responsible Officer of the Agent has actual knowledge, the Agent shall transmit by mail to the Company and the Holders of Securities, as their names and addresses appear in the Register, notice of such default hereunder, unless such default shall have been cured or waived. Section 7.3. Certain Rights of Agent. Subject to the provisions of Section 7.1: (a) the Agent may rely and shall be protected in acting or refraining from acting upon any resolution, certificate, statement, instrument, opinion, report, notice, request, direction, consent, order, bond, debenture, note, other evidence of indebtedness or other paper or document believed by it to be genuine and to have been signed or presented by the proper party or parties; (b) any request or direction of the Company mentioned herein shall be sufficiently evidenced by an Officer's Certificate, Issuer Order or Issuer Request, and any resolution of the Board of Directors of the Company may be sufficiently evidenced by a Board Resolution; (c) whenever in the administration of this Agreement the Agent shall deem it desirable that a matter be proved or established prior to taking, suffering or omitting any action hereunder, the Agent (unless other evidence be herein specifically prescribed) may, in the absence of bad faith on its part, rely upon an Officer's Certificate of the Company; 64

70 (d) the Agent may consult with counsel of its selection and the advice of such counsel or any Opinion of Counsel shall be full and complete authorization and protection in respect of any action taken, suffered or omitted by it hereunder in good faith and in reliance thereon; (e) the Agent shall not be bound to make any investigation into the facts or matters stated in any resolution, certificate, statement, instrument, opinion, report, notice, request, direction, consent, order, bond, debenture, note, other evidence of indebtedness or other paper or document, but the Agent, in its discretion, may make reasonable further inquiry or investigation into such facts or matters related to the execution, delivery and performance of the Purchase Contracts as it may see fit, and, if the Agent shall determine to make such further inquiry or investigation, it shall be given a reasonable opportunity to examine the books, records and premises of the Company, personally or by agent or attorney; and (f) the Agent may execute any of the powers hereunder or perform any duties hereunder either directly or by or through agents or attorneys or an Affiliate and the Agent shall not be responsible for any misconduct or negligence on the part of any agent or attorney or an Affiliate appointed with due care by it hereunder. Section 7.4. Not Responsible for Recitals or Issuance of Securities. The recitals contained herein and in the Certificates shall be taken as the statements of the Company and the Agent assumes no responsibility for their accuracy. The Agent makes no representations as to the validity or sufficiency of either this Agreement or of the Securities, or of the Pledge Agreement or the Pledge. The Agent shall not be accountable for the use or application by the Company of the proceeds in respect of the Purchase Contracts. Section 7.5. May Hold Securities. Any Registrar or any other agent of the Company, or the Agent and its Affiliates, in their individual or any other capacity, may become the owner or pledgee of Securities and may otherwise deal with the Company, the Collateral Agent or any other Person with the same rights it would have if it were not Registrar or such other agent, or the Agent. Section 7.6. Money Held in Custody. 65

71 Money held by the Agent in custody hereunder need not be segregated from the other funds except to the extent required by law or provided herein. The Agent shall be under no obligation to invest or pay interest on any money received by it hereunder except as otherwise expressly provided herein or as otherwise agreed in writing with the Company. Section 7.7. Compensation and Reimbursement. The Company agrees: (1) to pay to the Agent from time to time such compensation for all services rendered by it hereunder as the parties shall agree from time to time; (2) except as otherwise expressly provided herein, to reimburse the Agent upon its request for all reasonable expenses, disbursements and advances incurred or made by the Agent in accordance with any provision of this Agreement (including the reasonable compensation and the expenses and disbursements of its agents and counsel), except any such expense, disbursement or advance as may be attributable to its negligence, willful misconduct or bad faith; and (3) to indemnify the Agent and any predecessor Agent for, and to hold it harmless against, any loss, liability or expense, including taxes (other than taxes based upon, measured by or determined by the income of the Agent) incurred without negligence, willful misconduct or bad faith on its part, arising out of or in connection with the acceptance or administration of its duties hereunder, including the costs and expenses of defending itself against any claim or liability in connection with the exercise or performance of any of its powers or duties hereunder. The provisions of this Section shall survive the termination of this Agreement. Section 7.8. Corporate Agent Required; Eligibility. There shall at all times be an Agent hereunder which shall be a corporation organized and doing business under the laws of the United States of America, any State thereof or the District of Columbia, authorized under such laws to exercise corporate trust powers, having (or being a subsidiary of a bank holding company 66

72 having) a combined capital and surplus of at least $50,000,000, subject to supervision or examination by Federal or State authority and having an office in the Borough of Manhattan, The City of New York, if there be such a corporation in the Borough of Manhattan, The City of New York, qualified and eligible under this Article and willing to act on reasonable terms. If such corporation publishes reports of condition at least annually, pursuant to law or to the requirements of said supervising or examining authority, then for the purposes of this Section, the combined capital and surplus of such corporation shall be deemed to be its combined capital and surplus as set forth in its most recent report of condition so published. If at any time the Agent shall cease to be eligible in accordance with the provisions of this Section, it shall resign immediately in the manner and with the effect hereinafter specified in this Article. The provisions of this Section shall survive the termination of this Agreement. Section 7.9. Resignation and Removal; Appointment of Successor. (a) No resignation or removal of the Agent and no appointment of a successor Agent pursuant to this Article shall become effective until the acceptance of appointment by the successor Agent in accordance with the applicable requirements of Section 7.10. (b) The Agent may resign at any time by giving written notice thereof to the Company 60 days prior to the effective date of such resignation. If the instrument of acceptance by a successor Agent required by Section 7.10 shall not have been delivered to the Agent within 30 days after the giving of such notice of resignation, the resigning Agent may petition any court of competent jurisdiction for the appointment of a successor Agent. (c) The Agent may be removed at any time by Act of the Holders of a majority in number of the Outstanding Securities delivered to the Agent and the Company. If the instrument of acceptance by a successor Agent required by Section 7.10 shall not have been delivered to the Agent within 30 days after the giving of such notice of resignation, the resigning Agent may petition any court of competent jurisdiction for the appointment of a successor Agent. (d) If at any time (1) the Agent fails to comply with Section 310(b) of the TIA, as if the Agent were an indenture trustee under an indenture qualified under the 67

73 TIA, after written request therefor by the Company or by any Holder who has been a bona fide Holder of a Security for at least six months, or (2) the Agent shall cease to be eligible under Section 7.8 and shall fail to resign after written request therefor by the Company or by any such Holder, or (3) the Agent shall become incapable of acting or shall be ad judged a bankrupt or insolvent or a receiver of the Agent or of its property shall be appointed or any public officer shall take charge or control of the Agent or of its property or affairs for the purpose of rehabilitation, conservation or liquidation, then, in any such case, (i) the Company by a Board Resolution may remove the Agent, or (ii) any Holder who has been a bona fide Holder of a Security for at least six months may, on behalf of himself and all others similarly situated, petition any court of competent jurisdiction for the removal of the Agent and the appointment of a successor Agent. (e) If the Agent shall resign, be removed or become incapable of acting, or if a vacancy shall occur in the office of Agent for any cause, the Company, by a Board Resolution, shall promptly appoint a successor Agent and shall comply with the applicable requirements of Section 7.10. If no successor Agent shall have been so appointed by the Company and accepted appointment in the manner required by Section 7.10, any Holder who has been a bona fide Holder of a Security for at least six months may, on behalf of himself and all others similarly situated, petition any court of competent jurisdiction for the appointment of a successor Agent. (f) The Company shall give, or shall cause such successor Agent to give, notice of each resignation and each removal of the Agent and each appointment of a successor Agent by mailing written notice of such event by first-class mail, postage prepaid, to all Holders as their names and addresses appear in the applicable Register. Each notice shall include the name of the successor Agent and the address of its Corporate Trust Office and New York Office, if any. Section 7.10. Acceptance of Appointment by Successor. (a) In case of the appointment hereunder of a successor Agent, every such successor Agent so appointed shall execute, acknowledge and deliver to the Company and to the retiring Agent an instrument accepting such appointment, and 68

74 thereupon the resignation or removal of the retiring Agent shall become effective and such successor Agent, without any further act, deed or conveyance, shall become vested with all the rights, powers, agencies and duties of the retiring Agent; but, on the request of the Company or the successor Agent, such retiring Agent shall, upon payment of its charges, execute and deliver an instrument transferring to such successor Agent all the rights, powers and trusts of the retiring Agent and shall duly assign, transfer and deliver to such successor Agent all property and money held by such retiring Agent hereunder. (b) Upon request of any such successor Agent, the Company shall execute any and all instruments for more fully and certainly vesting in and confirming to such successor Agent all such rights, powers and agencies referred to in paragraph (a) of this Section. (c) No successor Agent shall accept its appointment unless at the time of such acceptance such successor Agent shall be qualified and eligible under this Article. Section 7.11. Merger, Conversion, Consolidation or Succession to Business. Any corporation into which the Agent may be merged or converted or with which it may be consolidated, or any corporation resulting from any merger, conversion or consolidation to which the Agent shall be a party, or any corporation succeeding to all or substantially all the corporate trust business of the Agent, shall be the successor of the Agent hereunder, provided such corporation shall be otherwise qualified and eligible under this Article, without the execution or filing of any paper or any further act on the part of any of the parties hereto. In case any Certificates shall have been authenticated and executed on behalf of the Holders, but not delivered, by the Agent then in office, any successor by merger, conversion or consolidation to such Agent may adopt such authentication and execution and deliver the Certificates so authenticated and executed with the same effect as if such successor Agent had itself authenticated and executed such Securities. Section 7.12. Preservation of Information; Communications to Holders. (a) The Agent shall preserve, in as current a form as is reasonably practicable, the names and addresses of Holders received by the Agent in its capacity as Registrar. 69

75 (b) If three or more Holders (herein referred to as "applicants") apply in writing to the Agent, and furnish to the Agent reasonable proof that each such applicant has owned a Security for a period of at least six months preceding the date of such application, and such application states that the applicants desire to communicate with other Holders with respect to their rights under this Agreement or under the Securities and is accompanied by a copy of the form of proxy or other communication which such applicants propose to transmit, then the Agent shall mail to all the Holders copies of the form of proxy or other communication which is specified in such request, with reasonable promptness after a tender to the Agent of the materials to be mailed and of payment, or provision for the payment, of the reasonable expenses of such mailing. Section 7.13. No Obligations of Agent. Except to the extent otherwise provided in this Agreement, the Agent assumes no obligations and shall not be subject to any liability under this Agreement, the Pledge Agreement or any Purchase Contract in respect of the obligations of the Holder of any Security thereunder. The Company agrees, and each Holder of a Certificate, by his acceptance thereof, shall be deemed to have agreed, that the Agent's execution of the Certificates on behalf of the Holders shall be solely as agent and attorney-in-fact for the Holders, and that the Agent shall have no obligation to perform such Purchase Contracts on behalf of the Holders, except to the extent expressly provided in Article V hereof. Section 7.14. Tax Compliance. (a) The Agent, on its own behalf and on behalf of the Company, will comply with all applicable certification, information reporting and withholding (including "backup" withholding) requirements imposed by applicable tax laws, regulations or administrative practice with respect to (i) any payments made with respect to the Securities or (ii) the issuance, delivery, holding, transfer, redemption or exercise of rights under the Securities. Such compliance shall include, without limitation, the preparation and timely filing of required returns and the timely payment of all amounts required to be withheld to the appropriate taxing authority or its designated agent. (b) The Agent shall comply with any written direction received from the Company with respect to the application of such requirements to particular payments or Holders or in other particular circumstances, and may for purposes of this 70

76 Agreement rely on any such direction in accordance with the provisions of Section 7.1(a)(2) hereof. (c) The Agent shall maintain all appropriate records documenting compliance with such requirements, and shall make such records available, on written request, to the Company or its authorized representative within a reasonable period of time after receipt of such request. ARTICLE VIII Supplemental Agreements Section 8.1. Supplemental Agreements Without Consent of Holders. Without the consent of any Holders, the Company and the Agent, at any time and from time to time, may enter into one or more agreements supplemental hereto, in form satisfactory to the Company and the Agent, for any of the following purposes: (1) to evidence the succession of another Person to the Company, and the assumption by any such successor of the covenants of the Company herein and in the Certificates; or (2) to add to the covenants of the Company for the benefit of the Holders, or to surrender any right or power herein conferred upon the Company; or (3) to evidence and provide for the acceptance of appointment hereunder by a successor Agent; or (4) to make provision with respect to the rights of Holders pursuant to the requirements of Section 5.6(c); or (5) to cure any ambiguity, to correct or supplement any provisions herein which may be inconsistent with any other provisions herein, or to make any other provisions with respect to such matters or questions arising under this Agreement, provided such action shall not adversely affect the interests of the Holders. 71

77 Section 8.2. Supplemental Agreements with Consent of Holders. With the consent of the Holders of not less than a majority of the Outstanding Purchase Contracts voting together as one class, by Act of said Holders delivered to the Company and the Agent, the Company, when authorized by a Board Resolution, and the Agent may enter into an agreement or agreements supplemental hereto for the purpose of modifying in any manner the terms of the Purchase Contracts or the provisions of this Agreement or the rights of the Holders in respect of the Securities (other than the Debentures, which may be modified only in accordance with the applicable provisions of the Indenture; provided, however, that, except as contemplated herein, no such supplemental agreement shall, without the consent of the Holder of each Outstanding Security affected thereby, (1) change any Payment Date; (2) change the amount or the type of Collateral required to be Pledged to secure a Holder's obligations under any Purchase Contract, impair the right of the Holder of any Purchase Contract to receive distributions on the related Collateral (except for the rights of Holders of Corporate Units to substitute the Treasury Securities for the pledged Debentures or the rights of holders of Treasury Units to substitute Debentures for the Pledged Treasury Securities) or otherwise adversely affect the Holder's rights in or to such Collateral or adversely alter the rights in or to such Collateral; (3) impair the right to institute suit for the enforcement of any Purchase Contract; (4) reduce the number of shares of Common Stock (or the amount of any other property) to be purchased pursuant to any Purchase Contract, increase the price to purchase shares of Common Stock (or any other property) upon settlement of any Purchase Contract, change the Purchase Contract Settlement Date or otherwise adversely affect the Holder's rights under any Purchase Contract; or (5) reduce the percentage of the outstanding Purchase Contracts the consent of whose Holders is required for any such supplemental agreement; provided, that if any amendment or proposal referred to above would adversely affect only the Corporate Units or the Treasury Units, then only the affected class of Holder 72

78 as of the record date for the Holders entitled to vote thereon will be entitled to vote on such amendment or proposal, and such amendment or proposal shall not be effective except with the consent of Holders of not less than a majority of such class. It shall not be necessary for any Act of Holders under this Section to approve the particular form of any proposed supplemental agreement, but it shall be sufficient if such Act shall approve the substance thereof. Section 8.3. Execution of Supplemental Agreements. In executing, or accepting the additional agencies created by, any supplemental agreement permitted by this Article or the modifications thereby of the agencies created by this Agreement, the Agent shall be entitled to receive and (subject to Section 7.1) shall be fully protected in relying upon, an Opinion of Counsel stating that the execution of such supplemental agreement is authorized or permitted by this Agreement. The Agent may, but shall not be obligated to, enter into any such supplemental agreement which affects the Agent's own rights, duties or immunities under this Agreement or otherwise. Section 8.4. Effect of Supplemental Agreements. Upon the execution of any supplemental agreement under this Article, this Agreement and the Securities shall be modified in accordance therewith, and such supplemental agreement shall form a part of this Agreement for all purposes; and every Holder of Certificates theretofore or thereafter authenticated, executed on behalf of the Holders and delivered hereunder shall be bound thereby. Section 8.5. Reference to Supplemental Agreements. Certificates authenticated, executed on behalf of the Holders and delivered after the execution of any supplemental agreement pursuant to this Article may, and shall if required by the Agent, bear a notation in form approved by the Agent as to any matter provided for in such supplemental agreement. If the Company shall so determine, new Certificates so modified as to conform, in the opinion of the Agent and the Company, to any such supplemental agreement may be prepared and executed by the Company and authenticated, executed on behalf of the Holders and delivered by the Agent in exchange for Outstanding Certificates. 73

79 ARTICLE IX Consolidation, Merger, Sale or Conveyance Section 9.1. Covenant Not to Merge, Consolidate, Sell or Convey Property Except Under Certain Conditions. The Company covenants that it will not merge or consolidate with any other Person or sell, assign, transfer, lease or convey all or substantially all of its properties and assets to any Person or group of affiliated Persons in one transaction or a series of related transactions, unless (i) either the Company shall be the continuing corporation, or the successor (if other than the Company) shall be a corporation organized and existing under the laws of the United States of America or a State thereof or the District of Columbia and such corporation shall expressly assume all the obligations of the Company under the Purchase Contracts, this Agreement, the Indenture, the Remarketing Agreement and the Pledge Agreement by one or more supplemental agreements in form reasonably satisfactory to the Agent and the Collateral Agent, executed and delivered to the Agent and the Collateral Agent by such corporation, and (ii) the Company or such successor corporation, as the case may be, shall not, immediately after such merger or consolidation, or such sale, assignment, transfer, lease or conveyance, be in default of its payment obligations under this Agreement or the Debentures, or in default of its obligations to deliver Common Stock (or other property) on the Purchase Contract Settlement Date or any Early Settlement Date, or in material default in the performance of any other covenant hereunder or under the Debentures, the Indenture, the Remarketing Agreement, the Purchase Contracts or the Pledge Agreement. Section 9.2. Rights and Duties of Successor Corporation. In case of any such consolidation, merger, sale, assignment, transfer, lease or conveyance and upon any such assumption by a successor corporation in accordance with Section 9.1, such successor corporation shall succeed to and be substituted for the Company with the same effect as if it had been named herein as the Company, and its predecessor shall, except in the case of a lease, be released from its obligations under this Agreement. Such successor corporation thereupon may cause to be signed, and may issue either in its own name or in the name of NRG Energy, Inc. any or all of the Certificates evidencing Securities issuable hereunder which theretofore shall not have been signed by the Company and delivered to the Agent; and, upon the order of such successor corporation, instead of the Company, and subject to all the terms, conditions and limitations in this Agreement prescribed, the 74

80 Agent shall authenticate and execute on behalf of the Holders and deliver any Certificates which previously shall have been signed and delivered by the officers of the Company to the Agent for authentication and execution, and any Certificate evidencing Securities which such successor corporation thereafter shall cause to be signed and delivered to the Agent for that purpose. All the Certificates so issued shall in all respects have the same legal rank and benefit under this Agreement as the Certificates theretofore or thereafter issued in accordance with the terms of this Agreement as though all of such Certificates had been issued at the date of the execution hereof. In case of any such consolidation, merger, sale, assignment, transfer, lease or conveyance, such change in phraseology and form (but not in substance) may be made in the Certificates evidencing Securities thereafter to be issued as may be appropriate. Section 9.3. Opinion of Counsel Given to Agent. The Agent, subject to Sections 7.1 and 7.3, shall receive an Opinion of Counsel as conclusive evidence that any such consolidation, merger, sale, assignment, transfer, lease or conveyance, and any such assumption, complies with the provisions of this Article and that all conditions precedent hereunder to the consummation of any such consolidation, merger, sale, assignment, transfer, lease or conveyance have been met. ARTICLE X Covenants Section 10.1. Performance Under Purchase Contracts. The Company covenants and agrees for the benefit of the Holders from time to time of the Securities that it will duly and punctually perform its obligations under the Purchase Contracts in accordance with the terms of the Purchase Contracts and this Agreement. Section 10.2. Maintenance of Office or Agency. The Company will maintain or cause to be maintained in the Borough of Manhattan, The City of New York an office or agency (a "New York Office") 75

81 Certificates may be presented or surrendered for payment and for acquisition of shares of Common Stock (or other property) upon settlement of the Purchase Contracts on the Purchase Contract Settlement Date or Early Settlement and for transfer of Collateral upon occurrence of a Termination Event, where Certificates may be surrendered for registration of transfer or exchange, for a Collateral Substitution or re-establishment of a Corporate Unit and where notices and demands to or upon the Company in respect of the Securities and this Agreement may be served. The Company will give prompt written notice to the Agent of the location, and any change in the location, of such office or agency. If at any time the Company shall fail to maintain any such required office or agency or shall fail to furnish the Agent with the address thereof, such presentations, surrenders, notices and demands may be made or served at the Corporate Trust Office, and the Company hereby appoints the Agent as its agent to receive all such presentations, surrenders, notices and demands. The Company may also from time to time designate one or more other offices or agencies where Certificates may be presented or surrendered for any or all such purposes and may from time to time rescind such designations; provided, however, that no such designation or rescission shall in any manner relieve the Company of its obligation to maintain an office or agency in the Borough of Manhattan, The City of New York for such purposes. The Company will give prompt written notice to the Agent of any such designation or rescission and of any change in the location of any such other office or agency. The Company hereby designates the Borough of Manhattan, the City of New York, as the places of payment for the Securities, and hereby appoints the Agent, acting through its Corporate Trust Office in ____________________, as the registrar, paying agent and transfer agent for the Corporate Units and the Treasury Units and for the other purposes contemplated by this Section 10.2. Section 10.3. Company to Reserve Common Stock. The Company shall at all times prior to the Purchase Contract Settlement Date reserve and keep available, free from preemptive rights, out of its authorized but unissued Common Stock the full number of shares of Common Stock issuable against tender of payment in respect of all Purchase Contracts constituting a part of the Securities evidenced by Outstanding Certificates. Section 10.4. Covenants as to Common Stock. 76

82 The Company covenants that all shares of Common Stock which may be issued against tender of payment in respect of any Purchase Contract constituting a part of the Outstanding Securities will, upon issuance, be duly authorized, validly issued, fully paid and nonassessable. The Company shall comply with all applicable securities laws regulating the offer, issuance and delivery of shares of Common Stock upon settlement of Purchase Contracts and will endeavor to list such shares on each national securities exchange or automated quotation system on which the Common Stock is then listed. 77

83 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed as of the day and year first above written. NRG ENERGY, INC. By:____________________________ Name: Title: By:____________________________ Name: Title: _______________________________ as Purchase Contract Agent By:____________________________ Name: Title:

84 EXHIBIT A (Form of Face of Corporate Units Certificate) THIS CERTIFICATE IS A GLOBAL CERTIFICATE WITHIN THE MEANING OF THE PURCHASE CONTRACT AGREEMENT (AS HEREINAFTER DEFINED) AND IS REGISTERED IN THE NAME OF THE CLEARING AGENCY OR A NOMINEE THEREOF. THIS CERTIFICATE MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR A CERTIFICATE REGISTERED, AND NO TRANSFER OF THIS CERTIFICATE IN WHOLE OR IN PART MAY BE REGISTERED, IN THE NAME OF ANY PERSON OTHER THAN SUCH CLEARING AGENCY OR A NOMINEE THEREOF, EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE PURCHASE CONTRACT AGREEMENT. UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW YORK) TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO., OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, AND ANY PAYMENT HEREON IS MADE TO CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY A PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. No. _____ CUSIP No. Number of Corporate Units _______ ____% Corporate Units This Corporate Units Certificate certifies that ___________ is the registered Holder of the number of Corporate Units set forth above. Each Corporate Unit represents (i) either (a) beneficial ownership by the Holder of $25 principal amount of ____% Senior Debentures due _______________, 2006 (the "Debenture"), subject to the Pledge of such Debenture by such Holder pursuant to the Pledge Agreement or (b) upon the occurrence of a Tax Event Redemption prior to the Purchase Contract Settlement Date or a Successful Initial Remarketing, the

85 appropriate Applicable Ownership Interest of the Treasury Portfolio, subject to the Pledge of such Applicable Ownership Interest of the Treasury Portfolio by such Holder pursuant to the Pledge Agreement, and (ii) the rights and obligations of the Holder under one Purchase Contract with NRG Energy, Inc., a Delaware corporation (the "Company," which term, as used herein, includes its successors pursuant to the Purchase Contract Agreement). All capitalized terms used herein which are defined in the Purchase Contract Agreement have the meaning set forth therein. Pursuant to the Pledge Agreement, the Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, constituting part of each Corporate Unit evidenced hereby have been pledged to the Collateral Agent, for the benefit of the Company, to secure the obligations of the Holder under the Purchase Contract comprising a portion of such Corporate Unit. The Pledge Agreement provides that all payments of principal on the pledged Debentures or the appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such term) of the Treasury Portfolio, as the case may be, or interest payments on any pledged Debentures (as defined in the Pledge Agreement) or the appropriate Applicable Ownership Interest (as specified in clause (B) of the definition of such term) of the Treasury Portfolio, as the case may be, constituting part of the Corporate Units received by the Collateral Agent shall be paid by the Collateral Agent by wire transfer in same day funds (i) in the case of (A) interest payments with respect to pledged Debentures or the appropriate Applicable Owner ship Interest (as specified in clause (B) of the definition of such term) of the Treasury Portfolio, as the case may be, and (B) any payments of principal or the appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such terms) of the Treasury Portfolio, as the case may be, with respect to any Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, that have been released from the Pledge pursuant to the Pledge Agreement, to the Agent to the account designated by the Agent, no later than 2:00 p.m., New York City time, on the Business Day such payment is received by the Collateral Agent (provided that in the event such payment is received by the Collateral Agent on a day that is not a Business Day or after 12:30 p.m., New York City time, on a Business Day, then such payment shall be made no later than 10:30 a.m., New York City time, on the next succeeding Business Day) and (ii) in the case of payments of principal on any pledged Debentures or the appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such term) of the Treasury Portfolio that has not been released from the Pledge pursuant to the Pledge Agreement, as the case may be, to the Company on the Purchase Contract Settlement Date (as defined herein) in accordance with the terms of the Pledge Agreement, in A-2

86 full satisfaction of the respective obligations of the Holders of the Corporate Units of which such pledged Debentures or the Treasury Portfolio, as the case may be, are a part under the Purchase Contracts forming a part of such Corporate Units. Interest on any Debentures or distributions on the appropriate Applicable Ownership Interest (as specified in clause (B) of the definition of such term) of the Treasury Portfolio, as the case may be, forming part of a Corporate Unit evidenced hereby which are payable quarterly in arrears on _________, _________, _________ and _________, each year, commencing _________, 2001 (a "Payment Date"), shall, subject to receipt thereof by the Agent from the Collateral Agent, be paid to the Person in whose name this Corporate Units Certificate (or a Predecessor Corporate Units Certificate) is registered at the close of business on the Record Date for such Payment Date. Each Purchase Contract evidenced hereby obligates the Holder of this Corporate Units Certificate to purchase, and the Company to sell, on _______________, 2004 (the "Purchase Contract Settlement Date"), at a price equal to $25 (the "Stated Amount"), a number of newly issued shares of Common Stock, $0.01 par value per share ("Common Stock"), of the Company equal to the Settlement Rate, unless on or prior to the Purchase Contract Settlement Date there shall have occurred a Termination Event or an Early Settlement with respect to the Corporate Units of which such Purchase Contract is a part, all as provided in the Purchase Contract Agreement and more fully described on the reverse hereof. The purchase price (the "Purchase Price") for the shares of Common Stock purchased pursuant to each Purchase Contract evidenced hereby, if not paid earlier, shall be paid on the Purchase Contract Settlement Date by application of payment received in respect of the Debentures or the appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such term) of the Treasury Portfolio, as the case may be, pledged to secure the obligations under such Purchase Contract of the Holder of the Corporate Units of which such Purchase Contract is a part. Interest on the Debentures or distributions on the appropriate Applicable Ownership Interest (as specified in clause (B) of the definition of such term) of the Treasury Portfolio, as the case may be, will be payable at the Corporate Trust Office of the Agent and at the New York Office or, at the option of the Company, by check mailed to the address of the Person entitled thereto as such address appears on the Corporate Units Register. Reference is hereby made to the further provisions set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. A-3

87 Unless the certificate of authentication hereon has been executed by the Agent by manual signature, this Corporate Units Certificate shall not be entitled to any benefit under the Pledge Agreement or the Purchase Contract Agreement or be valid or obligatory for any purpose. A-4

88 IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed. NRG ENERGY, INC. By:_________________________________________ Name: Title: By:_________________________________________ Name: Title: HOLDER SPECIFIED ABOVE (as to obligations of such Holder under the Purchase Contracts evidenced hereby) By:________________________ not individually but solely as attorney-in-fact of such Holder By:_________________________________________ Name: Title: Dated:

89 AGENT'S CERTIFICATE OF AUTHENTICATION This is one of the Corporate Units Certificates referred to in the within mentioned Purchase Contract Agreement. By:___________________________________, as Purchase Contract Agent By:_________________________________________ Authorized Signatory Dated: A-6

90 (Form of Reverse of Corporate Units Certificate) Each Purchase Contract evidenced hereby is governed by a Purchase Contract Agreement, dated as of _________, 2001 (as may be supplemented from time to time, the "Purchase Contract Agreement"), between the Company and ______________________, as Purchase Contract Agent (including its successors thereunder, herein called the "Agent"), to which Purchase Contract Agreement and supplemental agreements thereto reference is hereby made for a description of the respective rights, limitations of rights, obligations, duties and immunities thereunder of the Agent, the Company and the Holders and of the terms upon which the Corporate Units Certificates are, and are to be, executed and delivered. Each Purchase Contract evidenced hereby obligates the Holder of this Corporate Units Certificate to purchase, and the Company to sell, on the Purchase Contract Settlement Date at a price equal to the Purchase Price, a number of newly issued shares of Common Stock of the Company equal to the Settlement Rate, unless, on or prior to the Purchase Contract Settlement Date, there shall have occurred a Termination Event or an Early Settlement with respect to the Security of which such Purchase Contract is a part. The "Settlement Rate" is equal to (a) if the Applicable Market Value (as defined below) is equal to or greater than $______ (the "Threshold Appreciation Price"), ______ shares of Common Stock per Purchase Contract, (b) if the Applicable Market Value is less than the Threshold Appreciation Price but is greater than $_______, the number of shares of Common Stock per Purchase Contract equal to the Stated Amount divided by the Applicable Market Value and (c) if the Applicable Market Amount is less than or equal to $_______, _______ shares of Common Stock per Purchase Contract, in each case subject to adjustment as provided in the Purchase Contract Agreement. No fractional shares of Common Stock will be issued upon settlement of Purchase Contracts, as provided in the Purchase Contract Agreement. Each Purchase Contract evidenced hereby which is settled either through Early Settlement or Cash Settlement shall obligate the Holder of the related Corporate Units to purchase at the Purchase Price, and the Company to sell, a number of newly issued shares of Common Stock equal to the Early Settlement Rate or the Settlement Rate, as applicable. The "Applicable Market Value" means the average of the Closing Price per share of Common Stock on each of the 20 consecutive Trading Days ending on the third Trading Day immediately preceding the Purchase Contract Settlement Date or, A-7

91 for purposes of determining cash payable in lieu of factional shares in connection with an Early Settlement, the third Trading Day immediately preceding the relevant Early Settlement Date. The "Closing Price" of the Common Stock on any date of determination means the closing sale price (or, if no closing price is reported, the last reported sale price) of the Common Stock on The New York Stock Exchange, Inc. (the "NYSE") on such date or, if the Common Stock is not listed for trading on the NYSE on any such date, as reported in the composite transactions for the principal United States securities exchange on which the Common Stock is so listed, or if the Common Stock is not so listed on a United States national or regional securities exchange, as reported by the Nasdaq National Market, or, if the Common Stock is not so reported, the last quoted bid price for the Common Stock in the over-the-counter market as reported by the National Quotation Bureau or similar organization, or, if such bid price is not available, the market value of the Common Stock on such date as determined by a nationally recognized independent investment banking firm retained for this purpose by the Company. A "Trading Day" means a day on which the Common Stock (A) is not suspended from trading on any national or regional securities exchange or association or over-the-counter market at the close of business and (B) has traded at least once on the national or regional securities exchange or association or over-the-counter market that is the primary market for the trading of the Common Stock. In accordance with the terms of the Purchase Contract Agreement, the Holder of this Corporate Units Certificate shall pay the Purchase Price for the shares of Common Stock purchased pursuant to each Purchase Contract evidenced hereby by effecting a Cash Settlement or an Early Settlement or from the Proceeds of a remarketing of the related pledged Debentures of such holders. Unless a Tax Event Redemption or a Successful Initial Remarketing has occurred, a Holder of Corporate Units who does not elect to make an effective (1) Cash Settlement on or prior to 5:00 p.m. New York City time on the fifth Business Day immediately preceding the Purchase Contract Settlement Date, or (2) Early Settlement on or prior to 5:00 p.m. New York City time on the fifth Business Day immediately preceding the Purchase Contract Settlement Date, shall pay the Purchase Price for the shares of Common Stock to be issued under the related Purchase Contract from the Proceeds of the sale of the related pledged Debentures held by the Collateral Agent. Unless a Tax Event Redemption or a Successful Initial Remarketing has occurred, such sale will be made by the Remarketing Agent pursuant to the terms of the Supplemental Remarketing Agreement and the Remarketing Agreement on the third Business Day immediately preceding the Purchase Contract Settlement Date. If a Tax Event Redemption or a Successful Initial Remarketing has occurred, a Holder of Corporate Units who does not elect to make an effective Early Settlement on or prior to 5:00 p.m. New York A-8

92 City time on the second Business Day immediately preceding the Purchase Contract Settlement Date shall pay the Purchase Price with the Proceeds at maturity of the Applicable Ownership Interest (as defined in clause (A) of the definition of such term) of the Treasury Portfolio. The Company shall not be obligated to issue any shares of Common Stock in respect of a Purchase Contract or deliver any certificates therefor to the Holder unless it shall have received payment in full of the aggregate Purchase Price for the shares of Common Stock to be purchased thereunder in the manner herein set forth. Under the terms of the Pledge Agreement, the Agent will be entitled to exercise the voting and any other consensual rights pertaining to the pledged Debentures. Upon receipt of notice of any meeting at which holders of Debentures are entitled to vote or upon the solicitation of consents, waivers or proxies of holders of Debentures, the Agent shall, as soon as practicable thereafter, mail to the Corporate Units holders a notice (a) containing such information as is contained in the notice or solicitation, (b) stating that each Corporate Units holder on the record date set by the Agent therefor (which, to the extent possible, shall be the same date as the record date for determining the holders of Debentures entitled to vote) shall be entitled to instruct the Agent as to the exercise of the voting rights pertaining to the Debentures constituting a part of such holder's Corporate Units and (c) stating the manner in which such instructions may be given. Upon the written request of the Corporate Units Holders on such record date, the Agent shall endeavor insofar as practicable to vote or cause to be voted, in accordance with the instructions set forth in such requests, the maximum number of Debentures as to which any particular voting instructions are received. In the absence of specific instructions from the Holder of a Corporate Unit, the Agent shall abstain from voting the Debentures evidenced by such Corporate Units. Upon the occurrence of a Tax Event Redemption prior to the Purchase Contract Settlement Date, pursuant to the terms of the Pledge Agreement, the Collateral Agent will apply, out of the aggregate Redemption Price for the Debentures that are components of Corporate Units, an amount equal to the aggregate Redemption Amount for the Debentures that are components of Corporate Units to purchase on behalf of the Holders of Corporate Units, the Treasury Portfolio and, after deducting the Remarketing Fee to the extent permitted under the terms of the Remarketing Agreement, promptly remit the remaining portion of such Redemption Price to the Agent for payment to the Holders of such Corporate Units. A-9

93 Upon the occurrence of a Successful Initial Remarketing, pursuant to the terms of the Remarketing Agreement, the Remarketing Agent will apply an amount equal to the Treasury Portfolio Purchase Price to purchase on behalf of the Holders of Corporate Units, the Treasury Portfolio, and, after deducting the Remarketing Fee to the extent permitted under the terms of the Remarketing Agreement, promptly remit the remaining portion of such Proceeds of the Successful Initial Remarketing to the Agent for payment to the Holders of such Corporate Units. Following the occurrence of a Tax Event Redemption prior to the Purchase Contract Settlement Date or a Successful Initial Remarketing, the Holders of Corporate Units and the Collateral Agent shall have such security interests rights and obligations with respect to the Treasury Portfolio as the Holder of Corporate Units and the Collateral Agent had in respect of the Debentures, as the case may be, subject to the Pledge thereof as provided in Sections 2, 3, 4, 5 and 6 of the Pledge Agreement and any reference herein to the Debenture shall be deemed to be a reference to such Treasury Portfolio and any reference herein or in the Certificates to interest on the Debentures shall be deemed to be a reference to corresponding distributions on the Treasury Portfolio. The Corporate Units Certificates are issuable only in registered form and only in denominations of a single Corporate Unit and any integral multiple thereof. The transfer of any Corporate Units Certificate will be registered and Corporate Units Certificates may be exchanged as provided in the Purchase Contract Agreement. The Corporate Units Registrar may require a Holder, among other things, to furnish appropriate endorsements and transfer documents permitted by the Purchase Contract Agreement. No service charge shall be required for any such registration of transfer or exchange, but the Company and the Agent may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection therewith. A Holder who elects to substitute Treasury Securities for Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, thereby creating Treasury Units, shall be responsible for any fees or expenses payable in connection therewith. Except as provided in the Purchase Contract Agreement, for so long as the Purchase Contract underlying a Corporate Unit remains in effect, such Corporate Units shall not be separable into its constituent parts, and the rights and obligations of the Holder of such Corporate Units in respect of Debentures or the A-10

94 appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, and the Purchase Contract constituting such Corporate Units may be transferred and ex changed only as a Corporate Unit. A Holder of a Corporate Unit may create a Treasury Unit by delivering to the Collateral Agent Treasury Securities in an aggregate principal amount equal to the aggregate principal amount of the pledged Debentures or the appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such term) of the Treasury Portfolio, as the case may be, in exchange for the release of such pledged Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, in accordance with the terms of the Purchase Contract Agreement and the Pledge Agreement. From and after such Collateral Substitution, the Security for which such Pledged Treasury Securities secures the Holder's obligation under the Purchase Contract shall be referred to as a "Treasury Unit." A Holder may make such Collateral Substitution only in integral multiples of 40 Corporate Units for 40 Treasury Units; provided, however, that if a Tax Event Redemption or a Successful Initial Remarketing has occurred and the Treasury Portfolio has become a component of the Corporate Units, a Holder may make such Collateral Substitutions only in integral multiples of ____ Corporate Units for ____ Treasury Units. Such Collateral Substitution may cause the equivalent aggregate Stated Amount of this Certificate to be increased or decreased; provided, however, the equivalent aggregate Stated Amount outstanding under this Corporate Units Certificate shall not exceed [$200,000,000]. All such adjustments to the equivalent aggregate Stated Amount of this Corporate Units Certificate shall be duly recorded by placing an appropriate notation on the Schedule attached hereto. A Holder of Treasury Units may recreate Corporate Units by delivering to the Collateral Agent Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, with an aggregate principal amount, in the case of such Debentures, or with the appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such term) of the Treasury Portfolio, in the case of such appropriate Applicable Ownership Interest of the Treasury Portfolio, equal to the aggregate principal amount of the Pledged Treasury Securities in exchange for the release of such Pledged Treasury Securities in accordance with the terms of the Purchase Contract Agreement and the Pledge Agreement. Any such recreation of a Corporate Unit may be effected only in multiples of 40 Treasury Units for 40 Corporate Units; provided, however, that if a Tax Event Redemption or a Successful Initial Remarketing has occurred and the Treasury Portfolio has become a component of the Corporate Units, a Holder may make such substitution only in integral multiples of ____ Treasury Units for ____ Corporate Units. The Purchase Contracts and all obligations and rights of the Company and the Holders thereunder, including, without limitation, the rights and obligations of Holders to purchase Common Stock, shall immediately and automatically terminate, without the necessity of any notice or action by any Holder, the Agent or the Company, if, on or prior to the Purchase Contract Settlement Date, a Termination Event shall have occurred. Upon the occurrence of a Termination Event, the A-11

95 Company shall promptly but in no event later than two Business Days thereafter give written notice to the Agent, the Collateral Agent and to the Holders, at their addresses as they appear in the Corporate Units Register. Upon and after the occurrence of a Termination Event, the Collateral Agent shall release the Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, from the Pledge in accordance with the provisions of the Pledge Agreement. Subject to and upon compliance with the provisions of the Purchase Contract Agreement, at the option of the Holders thereof, Purchase Contracts underlying Securities having an aggregate Stated Amount equal to $1,000 or an integral multiple thereof may be settled early ("Early Settlement") as provided in the Purchase Contract Agreement; provided, however, that if a Tax Event Redemption or a Successful Initial Remarketing has occurred and the Treasury Portfolio has become a component of the Corporate Units, Holders may early settle Corporate Units only in integral multiples of ____ Corporate Units. In order to exercise the right to effect Early Settlement with respect to any Purchase Contracts evidenced by this Corporate Units Certificate, the Holder of this Corporate Units Certificate shall deliver this Corporate Units Certificate to the Agent at the Corporate Trust Office or the New York Office duly endorsed for transfer to the Company or in blank with the form of Election to Settle Early set forth below duly completed and accompanied by payment in the form of immediately available funds payable to the Company in an amount (the "Early Settlement Amount") equal to the product of (i) the Stated Amount times (ii) the number of Purchase Contracts with respect to which the Holder has elected to effect Early Settlement. Upon Early Settlement of Purchase Contracts by a Holder of the related Securities, the pledged Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio underlying such Securities shall be released from the Pledge as provided in the Pledge Agreement and the Holder shall be entitled to receive a number of shares of Common Stock on account of each Purchase Contract forming part of a Corporate Units as to which Early Settlement is effected equal to the Early Settlement Rate. The Early Settlement Rate shall initially be equal to __________ shares of Common Stock and shall be adjusted in the same manner and at the same time as the Settlement Rate is adjusted as provided in the Purchase Contract Agreement. Upon registration of transfer of this Corporate Units Certificate, the transferee shall be bound (without the necessity of any other action on the part of such transferee, except as may be required by the Agent pursuant to the Purchase Contract Agreement) under the terms of the Purchase Contract Agreement, the Pledge Agreement and the Purchase Contracts evidenced hereby and the transferor shall be released from the obligations under the Purchase Contract Agreement, the Pledge A-12

96 Agreement and the Purchase Contracts evidenced by this Corporate Units Certificate. The Company covenants and agrees, and the Holder, by its acceptance hereof, likewise covenants and agrees, to be bound by the provisions of this paragraph. The Holder of this Corporate Units Certificate, by its acceptance hereof, authorizes the Agent to enter into and perform the related Purchase Contracts forming part of the Corporate Units evidenced hereby on his behalf as his attorney-in-fact, expressly withholds any consent to the assumption (i.e., affirmance) of the Purchase Contracts by the Company or its trustee in the event that the Company becomes the subject of a case under the Bankruptcy Code, agrees to be bound by the terms and provisions thereof, covenants and agrees to perform its obligations under such Purchase Contracts, consents to the provisions of the Purchase Contract Agreement, authorizes the Agent to enter into and perform the Pledge Agreement on its behalf as its attorney-in-fact, and consents to the Pledge of the Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, underlying this Corporate Units Certificate pursuant to the Pledge Agreement. The Holder further covenants and agrees, that, to the extent and in the manner provided in the Purchase Contract Agreement and the Pledge Agreement, but subject to the terms thereof, Proceeds of the pledged Debentures or the appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such term) of the Treasury Portfolio on the Purchase Contract Settlement Date shall be paid by the Collateral Agent to the Company in satisfaction of such Holder's obligations under such Purchase Contract and such Holder shall acquire no right, title or interest in such Proceeds. Subject to certain exceptions, the provisions of the Purchase Contract Agreement may be amended with the consent of the Holders of a majority of the Purchase Contracts. The Purchase Contracts shall for all purposes be governed by, and construed in accordance with, the laws of the State of New York, without regard to principles of conflicts of laws. The Company, the Agent and its Affiliates and any agent of the Company or the Agent may treat the Person in whose name this Corporate Units Certificate is registered as the owner of the Corporate Units evidenced hereby for the purpose of receiving payments of interest payable quarterly on the Debentures or on the maturing quarterly interest strips of the Treasury Portfolio, as applicable, performance of the Purchase Contracts and for all other purposes whatsoever, whether or not any payments in respect thereof be overdue and notwithstanding any notice to the A-13

97 contrary, and neither the Company, the Agent nor any such agent shall be affected by notice to the contrary. The Purchase Contracts shall not, prior to the settlement thereof, entitle the Holder to any of the rights of a holder of shares of Common Stock. A copy of the Purchase Contract Agreement is available for inspection at the offices of the Agent. A-14

98 ABBREVIATIONS The following abbreviations, when used in the inscription on the face of this instrument, shall be construed as though they were written out in full according to applicable laws or regulations: TEN COM - as tenants in common UNIF GIFT MIN ACT - ------------Custodian------------ (cust) (minor) Under Uniform Gifts to Minors Act ------------------------------------ (State) TEN ENT - as tenants by the entireties JT TEN - as joint tenants with right of survivorship and not as tenants in common Additional abbreviations may also be used though not in the above list. --------------------------------------------- FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and transfer(s) unto ---------------------------------------------------------------- - -------------------------------------------------------------------------------- (Please insert Social Security or Taxpayer I.D. or other Identifying Number of Assignee) - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- (Please Print or Type Name and Address Including Postal Zip Code of Assignee) the within Corporate Units Certificates and all rights thereunder, hereby irrevocably constituting and appointing - -------------------------------------------------------------------------------- attorney to transfer said Corporate Units Certificates on the books of NRG Energy, Inc. with full power of substitution in the premises. Dated: ------------------- ---------------------------------------- Signature NOTICE: The signature to this assignment must correspond with the name as it appears upon the face of the within Corporate Units Certificates in every particular, without alteration or enlargement or any change whatsoever. Signature Guarantee: -------------------------------------------------- Signatures must be guaranteed by an "eligible guarantor institution" meeting the requirements of the Registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program ("STAMP") or such other "signature guarantee program" as may be determined by the Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. A-15

99 SETTLEMENT INSTRUCTIONS The undersigned Holder directs that a certificate for shares of Common Stock deliverable upon settlement on or after the Purchase Contract Settlement Date of the Purchase Contracts underlying the number of Corporate Units evidenced by this Corporate Units Certificate be registered in the name of, and delivered, together with a check in payment for any fractional share, to the undersigned at the address indicated below unless a different name and address have been indicated below. If shares are to be registered in the name of a Person other than the undersigned, the undersigned will pay any transfer tax payable incident thereto. Dated: ------------------------------- --------------------------------- Signature Signature Guarantee: ------------ (if assigned to another person) Signatures must be guaranteed by an "eligible guarantor institution" meeting the requirements of the Registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program ("STAMP") or such other "signature guarantee program" as may be determined by the Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. If shares are to be registered in the name of and delivered to a Person other than the Holder, please (i) print such Person's name and address REGISTERED HOLDER and (ii) provide a guarantee of your signature: Please print name and address of Registered Holder: - ------------------------------------ ------------------------------------ Name Name - ------------------------------------ ------------------------------------ Address Address - ------------------------------------ ------------------------------------ - ------------------------------------ ------------------------------------ Social Security or other Taxpayer Identification Number, if any ----------------------------------------- A-16

100 ELECTION TO SETTLE EARLY The undersigned Holder of this Corporate Units Certificate hereby irrevocably exercises the option to effect Early Settlement in accordance with the terms of the Purchase Contract Agreement with respect to the Purchase Contracts underlying the number of Corporate Units evidenced by this Corporate Units Certificate specified below. The option to effect Early Settlement may be exercised only with respect to Purchase Contracts underlying Corporate Units with an aggregate Stated Amount equal to $1,000 or an integral multiple thereof; provided, however, that if a Tax Event Redemption or a Successful Initial Remarketing has occurred and the Treasury Portfolio has become a component of the Corporate Units, Holders may early settle Corporate Units only in integral multiples of __________ Corporate Units. The undersigned Holder directs that a certificate for shares of Common Stock deliverable upon such Early Settlement be registered in the name of, and delivered, together with a check in payment for any fractional share and any Corporate Units Certificate representing any Corporate Units evidenced hereby as to which Early Settlement of the related Purchase Contracts is not effected, to the undersigned at the address indicated below unless a different name and address have been indicated below. Pledged Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, deliverable upon such Early Settlement will be transferred in accordance with the transfer instructions set forth below. If shares are to be registered in the name of a Person other than the undersigned, the undersigned will pay any transfer tax payable incident thereto. Dated:______________________________ ______________________________________ Signature Signature Guarantee (if assigned to another person):______________________________________ Signatures must be guaranteed by an "eligible guarantor institution" meeting the requirements of the Registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program ("STAMP") or such other "signature guarantee program" as may be determined by the Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. A-17

101 Number of Securities evidenced hereby as to which Early Settlement of the related Purchase Contracts is being elected: If shares of Common Stock or Corporate Units Certificates are to be registered in the name of and delivered to and pledged Debentures, or an Applicable Ownership Interest in the Treasury Portfolio, as the case may be, are to be transferred to a Person other than the Holder, please (i) print such Person's name and address and (ii) provide a guarantee of your signature: - ------------------------------------ Name - ------------------------------------ Address - ------------------------------------ - ------------------------------------ - ------------------------------------ - ------------------------------------ REGISTERED HOLDER Please print name and address of Registered Holder: - ------------------------------------ Name - ------------------------------------ Address - ------------------------------------ - ------------------------------------ - ------------------------------------ - ------------------------------------ Social Security or other Taxpayer Identification Number, if any ------------------------------------ A-18

102 Transfer Instructions for pledged Debentures, or the Applicable Ownership Interest in the Treasury Portfolio, as the case may be, Transferable Upon Early Settlement or a Termination Event: - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- A-19

103 [TO BE ATTACHED TO GLOBAL CERTIFICATES] SCHEDULE OF INCREASES OR DECREASES IN GLOBAL CERTIFICATE The following increases or decreases in this Global Certificate have been made: Amount of Amount of Stated Amount of this Signature of authorized decrease in Stated increase in Stated Global Certificate signatory of Purchase Amount of the Global Amount of the Global following such decrease Contract Agent or Date Certificate Certificate or increase Securities Custodian - ---------------------------------------------------------------------------------------------------------------------- - ---------------------------------------------------------------------------------------------------------------------- - ---------------------------------------------------------------------------------------------------------------------- - ---------------------------------------------------------------------------------------------------------------------- - ---------------------------------------------------------------------------------------------------------------------- - ---------------------------------------------------------------------------------------------------------------------- ====================================================================================================================== A-20

104 EXHIBIT B (Form of Face of Treasury Units Certificate) THIS CERTIFICATE IS A GLOBAL CERTIFICATE WITHIN THE MEANING OF THE PURCHASE CONTRACT AGREEMENT (AS HEREINAFTER DEFINED) AND IS REGISTERED IN THE NAME OF THE CLEARING AGENCY OR A NOMINEE THEREOF. THIS CERTIFICATE MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR A CERTIFICATE REGISTERED, AND NO TRANSFER OF THIS CERTIFICATE IN WHOLE OR IN PART MAY BE REGISTERED, IN THE NAME OF ANY PERSON OTHER THAN SUCH CLEARING AGENCY OR A NOMINEE THEREOF, EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE PURCHASE CONTRACT AGREEMENT. UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW YORK) TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO., OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, AND ANY PAYMENT HEREON IS MADE TO CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY A PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. No._______________ CUSIP NO. Number of Treasury Units ________________ ____ % Treasury Units This Treasury Units Certificate certifies that __________ is the registered Holder of the number of Treasury Units set forth above. Each Treasury Units represents (i) a 1/40, or 2.5%, undivided beneficial ownership interest in a Treasury Security having a principal amount at maturity equal to $1,000, subject to the Pledge of such Treasury Security by such Holder pursuant to the Pledge Agreement, and (ii) the rights and obligations of the Holder under one Purchase Contract with NRG

105 Energy, Inc., a Delaware corporation (the "Company," which term, as used herein, includes its successors pursuant to the Purchase Contract Agreement). All capitalized terms used herein which are defined in the Purchase Contract Agreement have the meaning set forth therein. Pursuant to the Pledge Agreement, the Treasury Securities constituting part of each Treasury Units evidenced hereby have been pledged to the Collateral Agent, for the benefit of the Company, to secure the obligations of the Holder under the Purchase Contract comprising a portion of such Treasury Units. The Pledge Agreement provides that all payments of the principal of any Treasury Securities received by the Collateral Agent shall be paid by the Collateral Agent by wire transfer of same day funds (i) in the case of any principal payments with respect to any Treasury Securities that have been released from the Pledge pursuant to the Pledge Agreement, to the Holders of the applicable Treasury Units to the accounts designated by them in writing for such purpose no later than 2:00 p.m. New York City time, on the Business Day such payment is received by the Collateral Agent (provided that in the event such payment is received by the Collateral Agent on a day that is not a Business Day or after 12:30 p.m., New York City time, on a Business Day, then such payment shall be made no later than 10:30 a.m., New York City time, on the next succeeding Business Day), and (ii) in the case of the principal of any Pledged Treasury Securities, to the Company on the Purchase Contract Settlement Date (as defined herein) in accordance with the terms of the Pledge Agreement, in full satisfaction of the respective obligations of the Holders of the Treasury Units of which such Pledged Treasury Securities are a part under the Purchase Contracts forming a part of such Treasury Units. Each Purchase Contract evidenced hereby obligates the Holder of this Treasury Units Certificate to purchase, and the Company to sell, on ___________, 2004 (the "Purchase Contract Settlement Date"), at a price equal to $25 (the "Stated Amount"), a number of newly issued shares of Common stock, $0.01 par value per share ("Common Stock"), of the Company equal to the Settlement Rate, unless on or prior to the Purchase Contract Settlement Date there shall have occurred a Termination Event or an Early Settlement with respect to the Treasury Units of which such Purchase Contract is a part, all as provided in the Purchase Contract Agreement and more fully described on the reverse hereof. The purchase price (the "Purchase Price") for the shares of Common Stock purchased pursuant to each Purchase Contract evidenced hereby, if not paid earlier, shall be paid on the Purchase Contract Settlement Date by application of the Proceeds from the Treasury Securities B-2

106 pledged to secure the obligations under such Purchase Contract in accordance with the terms of the Pledge Agreement. Reference is hereby made to the further provisions set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. Unless the certificate of authentication hereon has been executed by the Agent by manual signature, this Treasury Units Certificate shall not be entitled to any benefit under the Pledge Agreement or the Purchase Contract Agreement or be valid or obligatory for any purpose. B-3

107 IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed. NRG ENERGY, INC. By:________________________________________ Name: Title: By:________________________________________ Name: Title: HOLDER SPECIFIED ABOVE (as to obligations of such Holder under the Purchase Contracts) By: THE BANK OF NEW YORK not individually but solely as attorney-in-fact of such Holder By:________________________________________ Name: Title: Dated: AGENT'S CERTIFICATE OF AUTHENTICATION This is one of the Treasury Units referred to in the within-mentioned Purchase Contract Agreement. By: THE BANK OF NEW YORK, as Purchase Contract Agent By:________________________________________ Authorized Signatory

108 (Form of Reverse of Treasury Units Certificate) Each Purchase Contract evidenced hereby is governed by a Purchase Contract Agreement, dated as of _________, 2001 (as may be supplemented from time to time, the "Purchase Contract Agreement"), between the Company and _____________, as Purchase Contract Agent (including its successors thereunder, herein called the "Agent"), to which the Purchase Contract Agreement and supplemental agreements thereto reference is hereby made for a description of the respective rights, limitations of rights, obligations, duties and immunities thereunder of the Agent, the Company and the Holders and of the terms upon which the Treasury Units Certificates are, and are to be, executed and delivered. Each Purchase Contract evidenced hereby obligates the Holder of this Treasury Units Certificate to purchase, and the Company to sell, on the Purchase Contract Settlement Date at the Purchase Price, a number of newly issued shares of Common Stock of the Company equal to the Settlement Rate, unless, on or prior to the Purchase Contract Settlement Date, there shall have occurred a Termination Event or an Early Settlement with respect to the Security of which such Purchase Contract is a part. The "Settlement Rate" is equal to (a) if the Applicable Market Value (as defined below) is equal to or greater than $______ (the "Threshold Appreciation Price"), _______ shares of Common Stock per Purchase Contract, (b) if the Applicable Market Value is less than the Threshold Appreciation Price but is greater than $______, the number of shares of Common Stock per Purchase Contract equal to the Stated Amount divided by the Applicable Market Value and (c) if the Applicable Market Amount is less than or equal to $______, ______ shares of Common Stock per Purchase Contract, in each case subject to adjustment as provided in the Purchase Contract Agreement. No fractional shares of Common Stock will be issued upon settlement of Purchase Contracts, as provided in the Purchase Contract Agreement. Each Purchase Contract evidenced hereby which is settled through Early Settlement shall obligate the Holder of the related Treasury Units to purchase at the Purchase Price, and the Company to sell, a number of newly issued shares of Common Stock equal to the Early Settlement Rate. The "Applicable Market Value" means the average of the Closing Price per share of Common Stock on each of the 20 consecutive Trading Days ending on the third Trading Day immediately preceding the Purchase Contract Settlement Date or, for purposes of determining cash payable in lieu of fractional shares in connection with an Early Settlement, the third Trading Day immediately preceding the relevant Early Settlement Date. The "Closing Price" of the Common Stock on any date of determination means the closing sale price (or, if no closing price is reported, the last

109 reported sale price) of the Common Stock on The New York Stock Exchange, Inc. (the "NYSE") on such date or, if the Common Stock is not listed for trading on the NYSE on any such date, as reported in the composite transactions for the principal United States securities exchange on which the Common Stock is so listed, or if the Common Stock is not so listed on a United States national or regional securities exchange, as reported by the Nasdaq National Market or, if the Common Stock is not so reported, the last quoted bid price for the Common Stock in the over-the-counter market as reported by the National Quotation Bureau or similar organization, or, if such bid price is not available, the market value of the Common Stock on such date as determined by a nationally recognized independent investment banking firm retained for this purpose by the Company. A "Trading Day" means a day on which the Common Stock (A) is not suspended from trading on any national or regional securities exchange or association or over-the-counter market at the close of business and (B) has traded at least once on the national or regional securities exchange or association or over-the-counter market that is the primary market for the trading of the Common Stock. In accordance with the terms of the Purchase Contract Agreement, the Holder of this Treasury Units Certificate shall pay the Purchase Price for the shares of Common Stock purchased pursuant to each Purchase Contract evidenced hereby by effecting either an Early Settlement of each such Purchase Contract or by applying a principal amount of the Pledged Treasury Securities underlying such Holder's Treasury Units equal to the Stated Amount to the purchase of the Common Stock. A Holder of Treasury Units who does not elect, on or prior to 5:00 p.m. New York City time on the second Business Day immediately preceding the Purchase Contract Settlement Date, to make an Early Settlement, shall pay the Purchase Price for the shares of Common Stock to be issued on the related Purchase Contract by applying a principal amount of the Pledged Treasury Securities as aforesaid. The Company shall not be obligated to issue any shares of Common Stock in respect of a Purchase Contract or deliver any certificates therefor to the Holder unless it shall have received payment in full of the aggregate Purchase Price for the shares of Common Stock to be purchased thereunder in the manner herein set forth. The Treasury Units Certificates are issuable only in registered form and only in denominations of a single Treasury Units and any integral multiple thereof. The transfer of any Treasury Units Certificate will be registered and Treasury Units Certificates may be exchanged as provided in the Purchase Contract Agreement. The Treasury Units Registrar may require a Holder, among other things, to furnish appropriate endorsements and transfer documents permitted by the Purchase Contract Agreement. No service charge shall be required for any such registration of transfer or exchange, but the Company and the Agent may require payment of a sum sufficient B-6

110 to cover any tax or other governmental charge payable in connection therewith. A Holder who elects to substitute Debentures or the appropriate Applicable Owner ship Interest of the Treasury Portfolio, as the case may be, for Treasury Securities, thereby recreating Corporate Units, shall be responsible for any fees or expenses payable in connection therewith. Except as provided in the Purchase Contract Agreement, for so long as the Purchase Contract underlying a Treasury Units remains in effect, such Treasury Units shall not be separable into its constituent parts, and the rights and obligations of the Holder of such Treasury Units in respect of the Treasury Security and the Purchase Contract constituting such Treasury Units may be transferred and exchanged only as a Treasury Units. A Holder of Treasury Units may recreate Corporate Units by delivering to the Collateral Agent Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, with an aggregate principal amount, in the case of such Debentures, or with the appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such term) of the Treasury Portfolio, in the case of such appropriate Applicable Ownership Interest of the Treasury Portfolio, equal to the aggregate principal amount of the pledged Treasury Securities in exchange for the release of such pledged Treasury Securities in accordance with the terms of the Purchase Contract Agreement and the Pledge Agreement. From and after such substitution, the Security for which such pledged Debentures or appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, secures the Holder's obligation under the Purchase Contract shall be referred to as a "Corporate Units." A Holder may make such a substitution only in integral multiples of 40 Treasury Units for 40 Corporate Units; provided, however, that if a Tax Event Redemption or a Successful Initial Remarketing has occurred and the Treasury Portfolio has become a component of the Corporate Units, a Holder may make such substitution only in integral multiples of _____ Treasury Units for ______ Corporate Units. Such substitution may cause the equivalent aggregate Stated Amount of this Certificate to be increased or decreased; provided, however, the equivalent aggregate Stated Amount outstanding under this Treasury Units Certificate shall not exceed $[200,000,000]. All such adjustments to the equivalent aggregate Stated Amount of this Treasury Units Certificate shall be duly recorded by placing an appropriate notation on the Schedule attached hereto. A Holder of a Corporate Unit may create a Treasury Unit by delivering to the Collateral Agent Treasury Securities in an aggregate principal amount of the pledged Debentures or the appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such term) of the Treasury Portfolio, as the case may be, in exchange for the release of such pledged Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, in accordance with the terms of the Purchase Contract Agreement and the Pledge Agreement. Any such creation of a Treasury Units may be effected only in multiples of 40 Corporate Units for 40 Treasury Units; provided, however, if a Tax Event Redemption or a Successful B-7

111 Initial Remarketing has occurred and the Treasury Portfolio has become a component of the Corporate Unit, a Holder may make such Collateral Substitution only in integral multiples of __ Corporate Units for __ Treasury Units. The Purchase Contracts and all obligations and rights of the Company and the Holders thereunder, including, without limitation, the rights and obligations of Holders to purchase Common Stock shall immediately and automatically terminate, without the necessity of any notice or action by any Holder, the Agent or the Company, if, on or prior to the Purchase Contract Settlement Date, a Termination Event shall have occurred. Upon the occurrence of a Termination Event, the Company shall promptly but in no event later than two Business Days thereafter give written notice to the Agent, the Collateral Agent and to the Holders, at their addresses as they appear in the Treasury Units Register. Upon and after the occurrence of a Termination Event, the Collateral Agent shall release the Treasury Securities from the Pledge in accordance with the provisions of the Pledge Agreement. Subject to and upon compliance with the provisions of the Purchase Contract Agreement, at the option of the Holders thereof, Purchase Contracts underlying Securities having an aggregate Stated Amount equal to $1,000 or an integral multiple thereof may be settled early ("Early Settlement") as provided in the Purchase Contract Agreement. In order to exercise the right to effect Early Settlement with respect to any Purchase Contracts evidenced by this Treasury Units Certificate, the Holder of this Treasury Units Certificate shall deliver this Treasury Units Certificate to the Agent at the Corporate Trust Office or the New York Office duly endorsed for transfer to the Company or in blank with the form of Election to Settle Early set forth below duly completed and accompanied by payment in the form of immediately available funds payable to the Company in an amount (the "Early Settlement Amount") equal to the product of (i) the Stated Amount times (ii) the number of Purchase Contracts with respect to which the Holder has elected to effect Early Settlement. Upon Early Settlement of Purchase Contracts by a Holder of the related Securities, the Pledged Treasury Securities underlying such Securities shall be released from the Pledge as provided in the Pledge Agreement and the Holder shall be entitled to receive a number of shares of Common Stock on account of each Purchase Contract forming part of a Treasury Units as to which Early Settlement is effected equal to the Early Settlement Rate. The Early Settlement Rate shall initially be equal to _______ shares of Common Stock and shall be adjusted in the same manner and at the same time as the Settlement Rate is adjusted as provided in the Purchase Contract Agreement. Upon registration of transfer of this Treasury Units Certificate, the transferee shall be bound (without the necessity of any other action on the part of such transferee, except as may be required by the Agent pursuant to the Purchase Contract B-8

112 Agreement) under the terms of the Purchase Contract Agreement, the Pledge Agreement and the Purchase Contracts evidenced hereby and the transferor shall be released from the obligations under the Purchase Contract Agreement, the Pledge Agreement and the Purchase Contracts evidenced by this Treasury Units Certificate. The Company covenants and agrees, and the Holder, by his acceptance hereof, likewise covenants and agrees, to be bound by the provisions of this paragraph. The Holder of this Treasury Units Certificate, by its acceptance hereof, authorizes the Agent to enter into and perform the related Purchase Contracts forming part of the Treasury Units evidenced hereby on his behalf as its attorney-in-fact, expressly withholds any consent to the assumption (i.e., affirmance) of the Purchase Contracts by the Company or its trustee in the event that the Company becomes the subject of a case under the Bankruptcy Code, agrees to be bound by the terms and provisions thereof, covenants and agrees to perform its obligations under such Purchase Contracts, consents to the provisions of the Purchase Contract Agreement, authorizes the Agent to enter into and perform the Pledge Agreement on its behalf as its attorney-in-fact, and consents to the Pledge of the Treasury Securities underlying this Treasury Units Certificate pursuant to the Pledge Agreement. The Holder further covenants and agrees, that, to the extent and in the manner provided in the Purchase Contract Agreement and the Pledge Agreement, but subject to the terms thereof, Proceeds of the pledged Treasury Securities on the Purchase Contract Settlement Date shall be paid by the Collateral Agent to the Company in satisfaction of such Holder's obligations under such Purchase Contract and such Holder shall acquire no right, title or interest in such Proceeds. Subject to certain exceptions, the provisions of the Purchase Contract Agreement may be amended with the consent of the Holders of a majority of the Purchase Contracts. The Purchase Contracts shall for all purposes be governed by, and construed in accordance with, the laws of the State of New York, without regard to principles of conflicts of laws. The Company, the Agent and its Affiliates and any agent of the Company or the Agent may treat the Person in whose name this Treasury Units Certificate is registered as the owner of the Treasury Units evidenced hereby for the purpose of receiving payments on the Treasury Securities and performance of the Purchase Contracts and for all other purposes whatsoever, whether or not any payments in respect thereof be overdue and notwithstanding any notice to the contrary, and neither the Company, the Agent nor any such agent shall be affected by notice to the contrary. B-9

113 The Purchase Contracts shall not, prior to the settlement thereof, entitle the Holder to any of the rights of a holder of shares of Common Stock. A copy of the Purchase Contract Agreement is available for inspection at the offices of the Agent. B-10

114 ABBREVIATIONS The following abbreviations, when used in the inscription on the face of this instrument, shall be construed as though they were written out in full according to applicable laws or regulations: TEN COM - as tenants in common UNIF GIFT MIN ACT - ____________Custodian____________ (cust) (minor) Under Uniform Gifts to Minors Act _________________________________ (State) TEN ENT - as tenants by the entireties JT TEN - as joint tenants with right of survivorship and not as tenants in common Additional abbreviations may also be used though not in the above list. ________________________________ FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and transfer(s) unto_______________________________________________________________ _______________________________________________________________________________ (Please insert Social Security or Taxpayer I.D. or other Identifying Number of Assignee) _____________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ (Please Print or Type Name and Address Including Postal Zip Code of Assignee) the within Treasury Units Certificates and all rights thereunder, hereby irrevocably constituting and appointing _______________________________________________________________________________ attorney to transfer said Treasury Units Certificates on the books of NRG Energy, Inc. with full power of substitution in the premises. Dated: _________________ _________________________________ Signature NOTICE: The signature to this assignment must correspond with the name as it appears upon the face of the within Treasury Units Certificates in every particular, without alteration or enlargement or any change whatsoever. Signature Guarantee:___________________________________________________________ Signatures must be guaranteed by an "eligible guarantor institution" meeting the requirements of the Registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program ("STAMP") or such other "signature guarantee program" as may be determined by the Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. B-11

115 SETTLEMENT INSTRUCTIONS The undersigned Holder directs that a certificate for shares of Common Stock deliverable upon settlement on or after the Purchase Contract Settlement Date of the Purchase Contracts underlying the number of Treasury Units evidenced by this Treasury Units Certificate be registered in the name of, and delivered, together with a check in payment for any fractional share, to the undersigned at the address indicated below unless a different name and address have been indicated below. If shares are to be registered in the name of a Person other than the undersigned, the undersigned will pay any transfer tax payable incident thereto. Dated: Signature --------------------------------- -------------------------------- Signature Guarantee: ------------ (if assigned to another person) Signatures must be guaranteed by an "eligible guarantor institution" meeting the requirements of the Registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program ("STAMP") or such other "signature guarantee program" as may be determined by the Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. If shares are to be registered in the name of and delivered to a Person other than the Holder, please (i) print such Person's name and address and (ii) provide a guarantee of your signature: ------------------------------------------------------------------------------- Name ------------------------------------------------------------------------------- Address ------------------------------------------------------------------------------- ------------------------------------------------------------------------------- ------------------------------------------------------------------------------- Social Security or other Taxpayer Identification Number, if any ------------------------------------------------------------------ REGISTERED HOLDER Please print name and address of Registered Holder: ------------------------------------------------------------------------------- Name ------------------------------------------------------------------------------- Address ------------------------------------------------------------------------------- ------------------------------------------------------------------------------- ------------------------------------------------------------------------------- B-12

116 ELECTION TO SETTLE EARLY The undersigned Holder of this Treasury Units Certificate hereby irrevocably exercises the option to effect Early Settlement in accordance with the terms of the Purchase Contract Agreement with respect to the Purchase Contracts underlying the number of Treasury Units evidenced by this Treasury Units Certificate specified below. The option to effect Early Settlement may be exercised only with respect to Purchase Contracts underlying Treasury Units with an aggregate Stated Amount equal to $1,000 or an integral multiple thereof. The undersigned Holder directs that a certificate for shares of Common Stock deliverable upon such Early Settlement be registered in the name of, and delivered, together with a check in payment for any fractional share and any Treasury Units Certificate representing any Treasury Units evidenced hereby as to which Early Settlement of the related Purchase Contracts is not effected, to the undersigned at the address indicated below unless a different name and address have been indicated below. Pledged Treasury Securities deliverable upon such Early Settlement will be transferred in accordance with the transfer instructions set forth below. If shares are to be registered in the name of a Person other than the undersigned, the undersigned will pay any transfer or similar tax payable incident thereto. Dated:________________ ____________________________________________ Signature Signature Guarantee: ____________________________________ (if assigned to another person) Signatures must be guaranteed by an "eligible guarantor institution" meeting the requirements of the Registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program ("STAMP") or such other "signature guarantee program" as may be determined by the Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. B-13

117 Number of Securities evidenced hereby as to which Early Settlement of the related Purchase Contracts is being elected: If shares of Common Stock or Treasury Units Certificates are to be registered in the name of and delivered to and pledged Treasury Securities are to be transferred to a Person other than the Holder, please (i) print such Person's name and address and (ii) provide a guarantee of your signature: - -------------------------------------------------------------------------------- Name - -------------------------------------------------------------------------------- Address - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Social Security or other Taxpayer Identification Number, if any ---------------------------------- Please print name and address of Registered Holder: - -------------------------------------------------------------------------------- Name - -------------------------------------------------------------------------------- Address - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Transfer Instructions for pledged Treasury Securities Transferable Upon Early Settlement or a Termination Event: - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- B-14

118 [TO BE ATTACHED TO GLOBAL CERTIFICATES] SCHEDULE OF INCREASES OR DECREASES IN GLOBAL CERTIFICATE The following increases or decreases in this Global Certificate have been made: Stated Amount of this Signature of Amount of Amount of Global Certificate authorized signatory of decrease in Stated increase in Stated following such Purchase Contract Amount of the Global Amount of the Global decrease or Agent or Securities Date Certificate Certificate increase Custodian - -------------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------------- ========================================================================================================================== B-15

119 EXHIBIT C INSTRUCTION FROM PURCHASE CONTRACT AGENT TO COLLATERAL AGENT [Collateral Agent Address] Re: Equity Units of NRG Energy, Inc. (the "Company") We hereby notify you in accordance with Section [4.1] [4.2] of the Pledge Agreement, dated as of _________, 2001, (the "Pledge Agreement") among the Company, yourselves, as Collateral Agent, Custodial Agent and Securities Intermediary and ourselves, as Purchase Contract Agent and as attorney-in-fact for the holders of [Corporate Units] [Treasury Units] from time to time, that the holder of the Securities listed below (the "Holder") has elected to substitute [$_____ aggregate principal amount of Treasury Securities] [$_______ aggregate principal amount of Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be,] in exchange for an equal Value of [Pledged Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be,] [Pledged Treasury Securities] held by you in accordance with the Pledge Agreement and has delivered to us a notice stating that the Holder has Transferred [Treasury Securities] [Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be,] to you, as Collateral Agent. We hereby instruct you, upon receipt of such [Pledged Treasury Securities] [Pledged Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be,], and upon the payment by such Holder of any applicable fees, to release the [Debentures or the appropriate Applicable Owner ship Interest of the Treasury Portfolio, as the case may be,] [Treasury Securities] related to such [Corporate Units] [Treasury Units] to us in accordance with the Holder's instructions. Capitalized terms used herein but not defined shall have the meaning set forth in the Pledge Agreement. Date:_____________ _________________________________ By:______________________ Name: Title: Signature Guarantee:_____________

120 Please print name and address of Registered Holder electing to substitute [Treasury Securities] [Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be,] for the [Pledged Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be,] [Pledged Treasury Securities]: - --------------------------- --------------------------------- Name Social Security or other Taxpayer Identification Number, if any - --------------------------- Address - --------------------------- - --------------------------- C-2

121 EXHIBIT D INSTRUCTION TO PURCHASE CONTRACT AGENT [Purchase Contract Agent Address] Re: Equity Units of NRG Energy, Inc. (the "Company") The undersigned Holder hereby notifies you that it has delivered to , as Collateral Agent, [$_______ aggregate principal amount of Treasury Securities] [$ aggregate principal amount of Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be,] in exchange for an equal Value of [Pledged Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be,] [Pledged Treasury Securities] held by the Collateral Agent, in accordance with Section [4.1], [4.2] of the Pledge Agreement, dated February __, 2001 (the "Pledge Agreement"), between you, the Company and the Collateral Agent. The undersigned Holder has paid the Collateral Agent all applicable fees relating to such exchange. The undersigned Holder hereby instructs you to instruct the Collateral Agent to release to you on behalf of the undersigned Holder the [Pledged Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio] [Pledged Treasury Securities] related to such [Corporate Units] [Treasury Units]. Capitalized terms used herein but not defined shall have the meaning set forth in the Pledge Agreement. Dated:_____________ __________________________________ Signature Signature Guarantee:______________ Please print name and address of Registered Holder: ___________________________ _________________________________ Name Social Security or other Taxpayer Identification Number, if any __________________________ Address __________________________ __________________________

122 EXHIBIT E NOTICE TO SETTLE BY SEPARATE CASH [Purchase Contract Agent Address] Re: Equity Units of NRG Energy, Inc. (the "Company") The undersigned Holder hereby irrevocably notifies you in accordance with Section 5.4 of the Purchase Contract Agreement dated as of __________, 2001 among the Company and yourselves, as Purchase Contract Agent and as Attorney-in-Fact for the Holders of the Purchase Contracts, that such Holder has elected to pay to the Collateral Agent, on or prior to 11:00 a.m. New York City time, on the Business Day immediately preceding the Purchase Contract Settlement Date, (in lawful money of the United States by [certified or cashiers check or] wire transfer, in each case in immediately available funds), $_________ as the Purchase Price for the shares of Common Stock issuable to such Holder by the Company under the related Purchase Contract on the Purchase Contract Settlement Date. The undersigned Holder hereby instructs you to notify promptly the Collateral Agent of the undersigned Holders election to make such cash settlement with respect to the Purchase Contracts related to such Holder's [Corporate Units] [Treasury Units]. Dated:_____________ __________________________________ Signature Signature Guarantee:______________ Signatures must be guaranteed by an "eligible guarantor institution" meeting the requirements of the Registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program ("STAMP") or such other "signature guarantee program" as may be determined by the Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. Please print name and address of Registered Holder: ___________________________ _________________________________ Name Social Security or other Taxpayer Identification Number, if any __________________________ Address __________________________ __________________________

1 EXHIBIT 4.5 PLEDGE AGREEMENT DATED AS OF _____________, 2001 AMONG NRG ENERGY, INC., [___________________________] AS COLLATERAL AGENT, CUSTODIAL AGENT AND SECURITIES INTERMEDIARY AND [___________________________] AS PURCHASE CONTRACT AGENT

2 TABLE OF CONTENTS Page ARTICLE I Definitions...............................................................................2 ARTICLE II Pledge; Control and Perfection...........................................................6 SECTION 2.1 The Pledge.....................................................................6 SECTION 2.2 Control and Perfection.........................................................8 ARTICLE III Distributions on Pledged Collateral....................................................10 ARTICLE IV Substitution, Release, Repledge and Settlement of Debentures................................................................................11 SECTION 4.1 Substitution for Debentures and the Creation of Treasury Units...................................................................11 SECTION 4.2 Substitution of Treasury Securities and the Recreation of Corporate Units....................................................12 SECTION 4.3 Termination Event.............................................................13 SECTION 4.4 Cash Settlement...............................................................13 SECTION 4.5 Early Settlement..............................................................14 SECTION 4.6 Application of Proceeds; Settlement...........................................15 ARTICLE V Voting Rights - Debentures...............................................................17 ARTICLE VI Rights and Remedies; Tax Event Redemption...............................................17 SECTION 6.1 Rights and Remedies of the Collateral Agent...................................17 SECTION 6.2 Tax Event Redemption..........................................................19 SECTION 6.3 Initial Remarketing...........................................................19 SECTION 6.4 Substitutions.................................................................20 ARTICLE VII Representations and Warranties; Covenants..............................................20 SECTION 7.1 Representations and Warranties................................................20 SECTION 7.2 Covenants.....................................................................21 ARTICLE VIII The Collateral Agent..................................................................21 SECTION 8.1 Appointment, Powers and Immunities............................................21 SECTION 8.2 Instructions of the Company...................................................22 SECTION 8.3 Reliance......................................................................22 SECTION 8.4 Rights in other Capacities....................................................23 SECTION 8.5 Non-Reliance..................................................................23 SECTION 8.6 Compensation and Indemnity....................................................23 SECTION 8.7 Failure to Act................................................................24 SECTION 8.8 Resignation...................................................................24 SECTION 8.9 Right to Appoint Agent or Advisor.............................................25 SECTION 8.10 Survival.....................................................................25 SECTION 8.11 Exculpation..................................................................25 ARTICLE IX Amendment...............................................................................26 SECTION 9.1 Amendment Without Consent of Holders..........................................26 SECTION 9.2 Amendment with Consent of Holders.............................................26 SECTION 9.3 Execution of Amendments.......................................................27 SECTION 9.4 Effect of Amendments..........................................................27 SECTION 9.5 Reference to Amendments.......................................................28 i

3 ARTICLE X Miscellaneous............................................................................28 SECTION 10.1 No Waiver....................................................................28 SECTION 10.2 Governing Law................................................................28 SECTION 10.3 Notices......................................................................29 SECTION 10.4 Successors and Assigns.......................................................29 SECTION 10.5 Counterparts.................................................................29 SECTION 10.6 Severability.................................................................29 SECTION 10.7 Expenses, etc................................................................29 SECTION 10.8 Security Interest Absolute...................................................30 EXHIBIT A INSTRUCTION FROM PURCHASE CONTRACT AGENT TO COLLATERAL AGENT EXHIBIT B INSTRUCTION TO PURCHASE CONTRACT AGENT EXHIBIT C INSTRUCTION TO CUSTODIAL AGENT REGARDING REMARKETING EXHIBIT D INSTRUCTION TO CUSTODIAL AGENT REGARDING WITHDRAWAL FROM REMARKETING ii

4 PLEDGE AGREEMENT, dated as of _______________, 2001 (this "Agreement"), among NRG Energy, Inc., a Delaware corporation (the "Company"), [_______________], [a New York banking corporation], not individually but solely as collateral agent (in such capacity, together with its successors in such capacity, the "Collateral Agent"), as custodial agent (in such capacity, together with its successors in such capacity, the "Custodial Agent") and as "securities intermediary" as defined in Section 8-102(a)(14) of the Code (as defined herein) (in such capacity, together with its successors in such capacity, the "Securities Intermediary"), and [_______________________], not individually but solely as purchase contract agent and as attorney-in-fact of the Holders (as defined in the Purchase Contract Agreement) from time to time of the Securities (as hereinafter defined) (in such capacity, together with its successors in such capacity, the "Purchase Contract Agent") under the Purchase Contract Agreement (as hereinafter defined). RECITALS WHEREAS, the Company and the Purchase Contract Agent are parties to the Purchase Contract Agreement, dated as of the date hereof (as modified and supplemented and in effect from time to time, the "Purchase Contract Agreement"), pursuant to which there may be issued 8,000,000 Equity Units of the Company (or 9,200,000 Equity Units if the Underwriters' overallotment option is exercised in full), having a stated amount of $25 (the "Stated Amount") per Equity Unit; and WHEREAS, the Equity Units will initially consist of 8,000,000 (or 9,200,000 if the underwriters' overallotment option is exercised in full with respect to the Corporate Units) units (referred to as "Corporate Units") with a stated amount, per Corporate Unit, equal to the Stated Amount. Each Corporate Unit will initially consist of (a) a stock purchase contract (the "Purchase Contract") under which the holder will purchase from the Company not later than ___________, 2004 (the "Purchase Contract Settlement Date"), for an amount of cash equal to the Stated Amount, a number of newly issued shares of common stock, $0.01 par value per share (the "Common Stock"), of the Company equal to the Settlement Rate (as defined below) and (b) either beneficial ownership of a Debenture (as defined below) or, following a Successful Initial Remarketing or a Tax Event Redemption, the Applicable Ownership Interest of the Treasury Portfolio; and WHEREAS, if Holders of Corporate Units substitute collateral as contemplated by Section 4.1, each unit created thereby (referred to as "Treasury Units" and, together with the Corporate Units, the "Securities") will initially consist of (a) a Purchase Contract under which the Holder will purchase from the Company on the Purchase Contract Settlement Date, for an amount in cash equal to the Stated Amount, a number of newly issued shares of Common Stock of the Company, equal to the Settlement Rate, and (b) a 1/40, or 2.5%, undivided beneficial interest in a zero-coupon U.S. Treasury Security (CUSIP No. _________) having a principal

5 amount at maturity equal to $1,000 and maturing on ___________, 2004 (the "Treasury Securities"); and WHEREAS, pursuant to the terms of the Indenture (as defined below) the Company will issue $200,000,000 aggregate principal amount of _____% Senior Debentures due 2006 (or $230,000,000 if the Underwriters' overallotment option is exercised) (the "Debentures"), each having a principal amount per Debenture equal to $25; and WHEREAS, pursuant to the terms of the Purchase Contract Agreement and the Purchase Contracts, the Holders, from time to time, of the Securities have irrevocably authorized the Purchase Contract Agent, as attorney-in-fact of such Holders, among other things, to execute and deliver this Agreement on behalf of such Holders and to grant the pledge provided hereby of the Debentures, any Applicable Ownership Interest in the Treasury Portfolio and the Treasury Securities to secure each Holder's obligations under the related Purchase Contract, as provided herein and subject to the terms hereof; and WHEREAS, upon such pledge, the Pledged Debentures or the Applicable Ownership Interests in the Treasury Portfolio, as the case may be, and the Pledged Treasury Securities will be beneficially owned by the Holders but will be owned of record by the Purchase Contract Agent subject to the Pledge hereunder. NOW THEREFORE, in consideration of the foregoing premises, the Company, the Collateral Agent, the Securities Intermediary, the Custodial Agent and the Purchase Contract Agent, on its own behalf and as attorney-in-fact of the Holders from time to time of the Securities, agree as follows: ARTICLE I DEFINITIONS For all purposes of this Agreement, except as otherwise expressly provided or unless the context otherwise requires: (a) the terms defined in this Article have the meanings assigned to them in this Article and include the plural as well as the singular; (b) the words "herein," "hereof" and "hereunder" and other words of similar import refer to this Agreement as a whole and not to any particular Article, Section or other subdivision; (c) initially capitalized terms used but not otherwise defined herein have the meanings assigned to such terms in the Purchase Contract Agreement; and 2

6 (d) the following terms have the meanings assigned to them in this Section I(d); and "Agreement" means this instrument as originally executed or as it may from time to time be supplemented or amended by one or more agreements supplemental hereto entered into pursuant to the applicable provisions hereof. "Bankruptcy Code" means title 11 of the United States Code, or any other law of the United States that from time to time provides a uniform system of bankruptcy laws. "Business Day" means any day other than a Saturday, a Sunday or any other day on which banking institutions in The City of New York (in the State of New York) are permitted or required by any applicable law to close. "Cash" means any coin or currency of the United States as at the time shall be legal tender for payment of public and private debts. "Code" has the meaning specified in Section 6.1 hereof. "Collateral" has the meaning specified in Section 2.1 hereof. "Collateral Account" means the securities account (number ______) maintained at [_____________] in the name "[______________], as Purchase Contract Agent on behalf of the holders of certain securities of NRG Energy, Inc., Collateral Account subject to the security interest of [_____________________], as Collateral Agent, for the benefit of NRG Energy, Inc., as pledgee" and any successor account. "Collateral Agent" has the meaning specified in the first paragraph of this instrument. "Common Stock" has the meaning specified in the Recitals. "Company" means the Person named as the "Company" in the first paragraph of this instrument until a successor shall have become such, and thereafter "Company" shall mean such successor. "Custodial Agent" has the meaning specified in the first paragraph of this instrument. "Debentures" has the meaning specified in the Recitals. "Debenture Trustee" means [_____________], as trustee under the Indenture until a successor is appointed thereunder, and thereafter means such successor trustee. 3

7 "Intermediary" means any entity that in the ordinary course of its business maintains securities accounts for others and is acting in that capacity. "Permitted Investments" means any one of the following which shall mature not later than the next succeeding Business Day (i) any evidence of indebtedness with an original maturity of 365 days or less issued, or directly and fully guaranteed or insured, by the United States of America or any agency or instrumentality thereof (provided that the full faith and credit of the United States of America is pledged in support thereof or such indebtedness constitutes a general obligation of it); (ii) deposits, certificates of deposit or acceptances with an original maturity of 365 days or less of any institution which is a member of the Federal Reserve System having combined capital and surplus and undivided profits of not less than US $200.0 million at the time of deposit; (iii) investments with an original maturity of 365 days or less of any Person that is fully and unconditionally guaranteed by a bank referred to in clause (ii); (iv) investments in commercial paper, other than commercial paper issued by the Company or its affiliates, of any corporation incorporated under the laws of the United States or any State thereof, which commercial paper has a rating at the time of purchase at least equal to "A-1" by Standard & Poor's Ratings Services ("S&P") or at least equal to "P-1" by Moody's Investors Service, Inc. ("Moody's"); and (v) investments in money market funds registered under the Investment Company Act of 1940, as amended, rated in the highest applicable rating category by S&P or Moody's. "Person" and "person" means any individual, corporation, limited liability company, partnership, joint venture, association, joint-stock company, trust, unincorporated organization or government or any agency or political subdivision thereof. "Pledge" has the meaning specified in Section 2.1 hereof. "Pledged Debentures" has the meaning specified in Section 2.1 hereof. "Pledged Treasury Securities" has the meaning specified in Section 2.1 hereof. "Primary Treasury Dealer" means a primary U.S. government securities dealer in The City of New York. "Proceeds" means all interest, dividends, cash, instruments, securities, financial assets (as defined in ss. 8-102(a)(9) of the Code) and other property from time to time received, receivable or otherwise distributed upon the sale, exchange, maturity, collection or disposition of the Collateral or any proceeds thereof. "Purchase Contract" has the meaning specified in the Recitals. 4

8 "Purchase Contract Agent" has the meaning specified in the first paragraph of this Agreement. "Purchase Contract Agreement" has the meaning specified in the Recitals. "Purchase Contract Settlement Date" has the meaning specified in the Recitals. "Securities" has the meaning specified in the Recitals. "Securities Intermediary" has the meaning specified in the first paragraph of this Agreement. "Security Entitlement" has the meaning set forth in Section 8-102(a)(17) of the Code. "Separate Debentures" means any Debentures that are not Pledged Debentures. "Stated Amount" has the meaning specified in the Recitals. "Supplemental Remarketing Agreement" means the Supplemental Remarketing Agreement, as defined in the Remarketing Agreement. "Tax Event Redemption Date" means the date upon which a Tax Event Redemption is to occur. "TRADES" means the Treasury/Reserve Automated Debt Entry System maintained by the Federal Reserve Bank of New York pursuant to the TRADES Regulations. "TRADES Regulations" means the regulations of the United States Department of the Treasury, published at 31 C.F.R. Part 357, as amended from time to time. Unless otherwise defined herein, all terms defined in the TRADES Regulations are used herein as therein defined. "Transfer" means, except as otherwise expressly provided herein, with respect to the Collateral and in accordance with the instructions of the Collateral Agent, the Purchase Contract Agent or the Holder, as applicable: (i) in the case of Collateral consisting of securities which cannot be delivered by book-entry or which the parties agree are to be delivered in physical form, delivery in appropriate physical form to the recipient accompanied by any duly executed 5

9 instruments of transfer, assignments in blank, transfer tax stamps and any other documents necessary to constitute a legally valid transfer to the recipient; (ii) in the case of Collateral consisting of securities maintained in book-entry form by causing a "securities intermediary" (as defined in Section 8-102(a)(14) of the Code) to (i) credit a "security entitlement" (as defined in Section 8-102(a)(17) of the Code) with respect to such securities to a "securities account" (as defined in Section 8-501(a) of the Code) maintained by or on behalf of the recipient and (ii) to issue a confirmation to the recipient with respect to such credit. In the case of Collateral to be delivered to the Collateral Agent, the Securities Intermediary shall be the securities intermediary and the securities account shall be the Collateral Account. "Treasury Securities" has the meaning specified in the Recitals. "Value" with respect to any item of Collateral on any date means, as to (i) a Debenture, the principal amount thereof, (ii) Cash, the face amount thereof and (iii) Treasury Securities, the aggregate principal amount thereof at maturity. ARTICLE II PLEDGE; CONTROL AND PERFECTION SECTION 2.1 The Pledge(a) The Holders from time to time as beneficial owners of the Collateral (as defined below) acting through the Purchase Contract Agent, as their attorney-in-fact, and the Purchase Contract Agent, as nominal owner of the Collateral, each hereby pledge and grant to the Collateral Agent, for the benefit of the Company, as collateral security for the performance when due by such Holders of their respective obligations under the related Purchase Contracts, a security interest in all of the right, title and interest of the Purchase Contract Agent and such Holders (a) in the Debentures constituting a part of the Securities and any Treasury Securities delivered in exchange for any Debentures (or, if applicable, the Applicable Ownership Interest in the Treasury Portfolio), any Debentures (or, if applicable, the Applicable Ownership Interest in the Treasury Portfolio) delivered in exchange for any Treasury Securities, in accordance with Article IV hereof, in each case that have been Transferred to or received by the Collateral Agent and not released by the Collateral Agent to such Holders under the provisions of this Agreement; (b) in payments made by Holders pursuant to Section 4.4; (c) in the Collateral Account and all securities, financial assets, Cash and other property credited thereto and all Security Entitlements related thereto; (d) in the Treasury Portfolio purchased on behalf of the Holders of Corporate Units by the Collateral Agent upon the occurrence of a Successful Initial Remarketing or a Tax Event Redemption as provided in Article VI, or otherwise, and (e) all Proceeds of the foregoing (all of the foregoing, collectively, the "Collateral"). 6

10 Prior to or concurrently with the execution and delivery of this Agreement, the Purchase Contract Agent, on behalf of the initial Holders of the Securities, shall cause the Debentures comprising a part of the Corporate Units to be Transferred to the Collateral Agent for the benefit of the Company. Such Debentures shall be Transferred by physically delivering such Debentures to the Securities Intermediary indorsed in blank (or accompanied by a stock or bond power indorsed in blank) and causing the Securities Intermediary to credit the Collateral Account with such Debentures such that security entitlements with respect to such Debentures are credited to the Collateral Account. In the event a Holder of Corporate Units so elects, such Holder may Transfer Treasury Securities to the Collateral Agent for the benefit of the Company as provided in Section 4.1 hereof in exchange for the release by the Collateral Agent on behalf of the Company of Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, with an aggregate principal amount equal to the aggregate principal amount of the Treasury Securities so Transferred, in the case of Debentures, or with an appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such term) of the Treasury Portfolio equal to the aggregate principal amount of the Treasury Securities so transferred, in the event that a Successful Initial Remarketing or a Tax Event Redemption has occurred, to the Purchase Contract Agent on behalf of such Holder. In the event that a Holder of Treasury Units so elects, such Holder may Transfer Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio to the Collateral Agent for the benefit of the Company as provided in Section 4.2 hereof in exchange for the release by the Collateral Agent on behalf of the Company of Treasury Securities with an aggregate principal amount at maturity equal to the aggregate principal amount of the Debentures or the appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such term) of the Treasury Portfolio so transferred to the Purchase Contract Agent on behalf of such Holder. Treasury Securities and the appropriate Applicable Ownership Interest of the Treasury Portfolio, as applicable, shall be Transferred to the Collateral Account maintained by the Collateral Agent at the Securities Intermediary by book-entry transfer to the Collateral Account in accordance with the TRADES Regulations and other applicable law and by the notation by the Securities Intermediary on its books that a Security Entitlement with respect to such Treasury Securities or appropriate Applicable Ownership Interest of the Treasury Portfolio, has been credited to the Collateral Account. (b) For purposes of perfecting the Pledge under applicable law, including, to the extent applicable, the TRADES Regulations or the Uniform Commercial Code as adopted and in effect in any applicable jurisdiction, the Collateral Agent shall be the agent of the Company as provided herein. The pledge provided in this Section 2.1 is herein referred to as the "Pledge" and the Debentures or Treasury Securities subject to the Pledge, excluding any Debentures that are delivered pursuant to Section 6.2 hereof or Treasury Securities released from the Pledge as provided in Article IV hereof, are hereinafter referred to as "Pledged Debentures" or the "Pledged Treasury Securities," respectively. Subject to the Pledge and the provisions of Section 2.2 7

11 hereof, the Holders from time to time shall have full beneficial ownership of the Collateral. Whenever directed by the Collateral Agent acting on behalf of the Company, the Securities Intermediary shall have the right to reregister the Debentures or any other securities held in physical form in its name. Except as may be required in order to release Debentures in connection with a Holder's election to convert its investment from a Corporate Unit to a Treasury Unit, or except as otherwise required to release Debentures as specified herein, neither the Collateral Agent nor the Securities Intermediary shall relinquish physical possession of any certificate evidencing a Debenture prior to the termination of this Agreement, except Debentures may be held in any clearing corporation in an account including only assets of customers of the Collateral Agent or Securities Intermediary. If it becomes necessary for the Securities Intermediary to relinquish physical possession of a certificate in order to release a portion of the Debentures evidenced thereby from the Pledge, the Securities Intermediary shall use its best efforts to obtain physical possession of a replacement certificate evidencing any Debentures remaining subject to the Pledge hereunder registered to it or indorsed in blank (or accompanied by a stock or bond power indorsed in blank) within fifteen days of the date it relinquished possession. The Securities Intermediary shall promptly notify the Company and the Collateral Agent of the Securities Intermediary's failure to obtain possession of any such replacement certificate as required hereby. SECTION 2.2 Control and Perfection(a) In connection with the Pledge granted in Section 2.1, and subject to the other provisions of this Agreement, the Holders from time to time acting through the Purchase Contract Agent, as their attorney-in-fact, and the Purchase Contract Agent each hereby authorize and direct the Securities Intermediary (without the necessity of obtaining the further consent of the Purchase Contract Agent or any of the Holders), and the Securities Intermediary agrees, to comply with and follow any instructions and entitlement orders (as defined in Section 8-102(a)(8) of the Code) that the Collateral Agent on behalf of the Company may give in writing with respect to the Collateral Account, the Collateral credited thereto and any Security Entitlements with respect to any thereof. Such instructions and entitlement orders may, without limitation, direct the Securities Intermediary to transfer, redeem, sell, liquidate, assign, deliver or otherwise dispose of the Debentures, the Treasury Securities, the Treasury Portfolio, and any Security Entitlements with respect thereto and to pay and deliver any income, proceeds or other funds derived therefrom to the Company. The Holders from time to time acting through the Purchase Contract Agent hereby further authorize and direct the Collateral Agent, as agent of the Company, to itself issue instructions and entitlement orders, and to otherwise take action, with respect to the Collateral Account, the Collateral credited thereto and any security entitlements with respect thereto, pursuant to the terms and provisions hereof, all without the necessity of obtaining the further consent of the Purchase Contract Agent or any of the Holders. The Collateral Agent shall be the agent of the Company and shall act as directed in writing by the Company. Without limiting the generality of the foregoing, the 8

12 Collateral Agent shall issue entitlement orders to the Securities Intermediary when and as directed by the Company. (b) The Securities Intermediary hereby confirms and agrees that: (i) all securities or other property underlying any financial assets credited to the Collateral Account shall be registered in the name of the Securities Intermediary, indorsed to the Securities Intermediary or in blank or credited to another collateral account maintained in the name of the Securities Intermediary and in no case will any financial asset credited to the Collateral Account be registered in the name of the Purchase Contract Agent, the Collateral Agent, the Company or any Holder, payable to the order of, or specially indorsed to, the Purchase Contract Agent, the Collateral Agent, the Company or any Holder except to the extent the foregoing have been specially indorsed to the Securities Intermediary or in blank; (ii) all property delivered to the Securities Intermediary pursuant to this Pledge Agreement (including, without limitation, any Debentures, the Treasury Portfolio or Treasury Securities) will be promptly credited to the Collateral Account; (iii) the Collateral Account is an account to which financial assets are or may be credited, and the Securities Intermediary shall, subject to the terms of this Agreement, treat the Purchase Contract Agent as entitled to exercise the rights of any financial asset credited to the Collateral Account; (iv) the Securities Intermediary has not entered into, and until the termination of this Agreement will not enter into, any agreement with any other person relating to the Collateral Account and/or any financial assets credited thereto pursuant to which it has agreed to comply with entitlement orders (as defined in Section 8-102(a)(8) of the Code) of such other person; and (v) the Securities Intermediary has not entered into, and until the termination of this Agreement will not enter into, any agreement with the Company, the Collateral Agent or the Purchase Contract Agent purporting to limit or condition the obligation of the Securities Intermediary to comply with entitlement orders as set forth in this Section 2.2 hereof. (c) The Securities Intermediary hereby agrees that each item of property (whether investment property, financial asset, security, instrument or cash) credited to the Collateral Account shall be treated as a "financial asset" within the meaning of Section 8-102(a)(9) of the Code. (d) In the event of any conflict between this Agreement (or any portion thereof) and any other agreement now existing or hereafter entered into, the terms of this Agreement shall prevail. (e) The Purchase Contract Agent hereby irrevocably constitutes and appoints the Collateral Agent and the Company, with full power of substitution, as the Purchase Contract Agent's attorneys-in-fact to take on behalf of, and in the name, place and stead of, the Purchase Contract Agent and the Holders, any action necessary or desirable to perfect and to keep perfected the security interest in the Collateral referred to in Section 2.1. The grant of such power-of-attorney shall not 9

13 be deemed to require of the Collateral Agent any specific duties or obligations not otherwise assumed by the Collateral Agent hereunder. ARTICLE III DISTRIBUTIONS ON PLEDGED COLLATERAL So long as the Purchase Contract Agent is the registered owner of the Pledged Debentures, it shall receive all payments thereon. If the Pledged Debentures are reregistered, such that the Collateral Agent becomes the registered holder, all payments of principal on the Pledged Debentures or, if applicable, the appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such term) of the Treasury Portfolio, or interest payments on the Pledged Debentures or on the appropriate Applicable Ownership Interest (as specified in clause (B) of the definition of such term) of the Treasury Portfolio, as the case may be, and all payments of the principal of, or cash distributions on, any Pledged Treasury Securities received by the Collateral Agent that are properly payable hereunder shall be paid by the Collateral Agent by wire transfer in same day funds: (i) in the case of (A) interest payments with respect to the Pledged Debentures or the appropriate Applicable Ownership Interest (as specified in clause (B) of the definition of such term) of the Treasury Portfolio, as the case may be, and (B) any payments of principal or, if applicable, the appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such term) of the Treasury Portfolio with respect to any Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, that have been released from the Pledge pursuant to Section 4.1 or 4.3 hereof, to the Purchase Contract Agent, for the benefit of the relevant Holders of Securities, to the account designated by the Purchase Contract Agent for such purpose, no later than 2:00 p.m., New York City time, on the Business Day such payment is received by the Collateral Agent (provided that in the event such payment is received by the Collateral Agent on a day that is not a Business Day or after 12:30 p.m., New York City time, on a Business Day, then such payment shall be made no later than 10:30 a.m., New York City time, on the next succeeding Business Day); (ii) in the case of any principal payments with respect to any Treasury Securities that have been released from the Pledge pursuant to Section 4.2 or 4.3 hereof, to the Purchase Contract Agent, for the benefit of the Holders of the Treasury Units, to the accounts designated by the Purchase Contract Agent in writing for such purpose, no later than 2:00 p.m., New York City time, on the Business Day such payment is received by the Collateral Agent (provided that in the event such payment is received by the Collateral Agent on a day that is not a Business Day or after 12:30 p.m., New York City time, on a Business Day, then such payment shall be made no later than 10:30 a.m., New York City time, on the next succeeding Business Day); and 10

14 (iii) in the case of payments of the Proceeds of any Pledged Debentures or the appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such term) of the Treasury Portfolio, as the case may be, or the Proceeds of any Pledged Treasury Securities, to the Company on the Purchase Contract Settlement Date to the extent of the Purchase Price in accordance with the procedure set forth in Section 4.6(a) or 4.6(b) hereof, in full satisfaction of the respective obligations of the Holders under the related Purchase Contracts and, to the extent such Proceeds exceed the Purchase Price, to the Purchase Contract Agent for the benefit of the Holders. All payments received by the Purchase Contract Agent as provided herein shall be applied by the Purchase Contract Agent pursuant to the provisions of the Purchase Contract Agreement. If, notwithstanding the foregoing, the Purchase Contract Agent shall receive any payments of the principal amount of the Debenture or, if applicable, the appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such term) on account of any Pledged Debenture or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as applicable, that, at the time of such payment, is subject to the Pledge, or a Holder of a Treasury Unit shall receive any payments of principal on account of any Treasury Securities that, at the time of such payment, are Pledged Treasury Securities, the Purchase Contract Agent or such Holder shall hold the same as trustee of an express trust for the benefit of the Company (and promptly deliver the same over to the Company) for application to the obligations of the Holders under the related Purchase Contracts, and the Holders shall acquire no right, title or interest in any such payments of principal so received. ARTICLE IV SUBSTITUTION, RELEASE, REPLEDGE AND SETTLEMENT OF DEBENTURES SECTION 4.1 Substitution for Debentures and the Creation of Treasury Units At any time on or prior to the fifth Business Day immediately preceding the Purchase Contract Settlement Date (or on or prior to the second Business Day immediately preceding the Purchase Contract Settlement Date, if a Tax Event Redemption or a Successful Initial Remarketing has occurred), a Holder of Corporate Units shall have the right to substitute Treasury Securities for the Pledged Debentures (or, if a Tax Event Redemption or a Successful Initial Remarketing has occurred, the appropriate Applicable Ownership Interest in the Treasury Portfolio) securing such Holder's obligations under the Purchase Contract(s) comprising a part of its Corporate Units in integral multiples of 40 Corporate Units by (a) Transferring to the Collateral Agent Treasury Securities having a Value equal to the aggregate principal amount of the Pledged Debentures (or appropriate Applicable Ownership Interest (as defined in clause (A) of the definition of such term) in the Treasury Portfolio as the case may be), to be released and transferring the related Corporate Units to the Purchase Contract Agent, accompanied by a notice, substantially in the form of Exhibit B hereto, to the Purchase Contract Agent stating that such Holder has Transferred the relevant 11

15 Treasury Securities to the Collateral Agent pursuant to clause (a) above (stating the Value of the Treasury Securities Transferred by such Holder) and requesting that the Purchase Contract Agent instruct the Collateral Agent to release from the Pledge the Pledged Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, related to such Corporate Units. The Purchase Contract Agent shall instruct the Collateral Agent in the form provided in Exhibit A; provided, however, that if a Tax Event Redemption or a Successful Initial Remarketing has occurred and the Treasury Portfolio has become a component of the Corporate Units, Holders of Corporate Units may make such substitution only in integral multiples of ________ Corporate Units at any time on or prior to the second Business Day immediately preceding the Purchase Contract Settlement Date. Upon receipt of Treasury Securities from a Holder of Corporate Units and the related instruction from the Purchase Contract Agent, the Collateral Agent shall release the Pledged Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, and shall promptly Transfer to the securities account specified by the Purchase Contract Agent such Pledged Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, free and clear of any lien, pledge or security interest created hereby. All items Transferred and/or substituted by any Holder pursuant to this Section 4.1, Section 4.2 or any other Section of this Agreement shall be Transferred and/or substituted free and clear of all liens, claims and encumbrances. SECTION 4.2 Substitution of Treasury Securities and the Recreation of Corporate Units At any time on or prior to the fifth Business Day immediately preceding the Purchase Contract Settlement Date (or on or prior to the second Business Day immediately preceding the Purchase Contract Settlement Date, if a Tax Event Redemption or a Successful Initial Remarketing has occurred), a Holder of Treasury Units shall have the right to recreate Corporate Units in integral multiples of 40 Corporate Units by (a) Transferring to the Collateral Agent Debentures having a Value equal to the Value of the Pledged Treasury Securities to be released (or the appropriate Applicable Ownership Interest of the Treasury Portfolio with the Applicable Ownership Interest (as defined in clause (A) of the definition of such term) having Value equal to the Value of the Pledged Treasury Securities to be released) and (b) delivering the related Treasury Units to the Purchase Contract Agent, accompanied by a notice, substantially in the form of Exhibit B hereto, to the Purchase Contract Agent stating that such Holder has transferred the relevant amount of Debentures (or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be) to the Collateral Agent pursuant to clause (a) above and requesting that the Purchase Contract Agent instruct the Collateral Agent to release from the Pledge the Pledged Treasury Securities underlying such Treasury Units. The Purchase Contract Agent shall instruct the Collateral Agent in the form provided in Exhibit A; provided, however, that if a Tax Event Redemption or a Successful Initial Remarketing has occurred and the Treasury Portfolio has become a component of the Corporate Units, Holders of Treasury Units may make such substitution only in integral multiples of ________ Treasury Units, at any time on or prior to the second Business Day immediately 12

16 preceding the Purchase Contract Settlement Date. Upon receipt of the Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, from such Holder and the instruction from the Purchase Contract Agent, the Collateral Agent shall release the Treasury Securities having a corresponding aggregate principal amount from the Pledge and shall promptly Transfer such Treasury Securities, free and clear of any lien, pledge or security interest created hereby, to the Purchase Contract Agent. SECTION 4.3 Termination Event Upon receipt by the Collateral Agent of written notice from the Company or the Purchase Contract Agent that there has occurred a Termination Event, the Collateral Agent shall release all Collateral from the Pledge and shall promptly Transfer any Pledged Debentures (or the Applicable Ownership Interest of the Treasury Portfolio if a Tax Event Redemption or a Successful Initial Remarketing has occurred) and Pledged Treasury Securities to the Purchase Contract Agent for the benefit of the Holders of the Corporate Units and the Treasury Units, respectively, free and clear of any lien, pledge or security interest or other interest created hereby. If such Termination Event shall result from the Company's becoming a debtor under the Bankruptcy Code, and if the Collateral Agent shall for any reason fail promptly to effectuate the release and Transfer of all Pledged Debentures, the Treasury Portfolio or of the Pledged Treasury Securities, as the case may be, as provided by this Section 4.3, the Purchase Contract Agent shall (i) use reasonable efforts to obtain an opinion of a nationally recognized law firm reasonably acceptable to the Collateral Agent to the effect that, as a result of the Company's being the debtor in such a bankruptcy case, the Collateral Agent will not be prohibited from releasing or Transferring the Collateral as provided in this Section 4.3, and shall deliver such opinion to the Collateral Agent within ten days after the occurrence of such Termination Event, and if (y) the Purchase Contract Agent shall be unable to obtain such opinion within ten days after the occurrence of such Termination Event or (z) the Collateral Agent shall continue, after delivery of such opinion, to refuse to effectuate the release and Transfer of all Pledged Debentures, the Treasury Portfolio or the Pledged Treasury Securities, as the case may be, as provided in this Section 4.3, then the Purchase Contract Agent shall within fifteen days after the occurrence of such Termination Event commence an action or proceeding in the court with jurisdiction of the Company's case under the Bankruptcy Code seeking an order requiring the Collateral Agent to effectuate the release and transfer of all Pledged Debentures, the Treasury Portfolio or of the Pledged Treasury Securities, as the case may be, as provided by this Section 4.3 or (ii) commence an action or proceeding like that described in subsection (i)(z) hereof within ten days after the occurrence of such Termination Event. SECTION 4.4 Cash Settlement(a) Upon receipt by the Collateral Agent of (i) a notice from the Purchase Contract Agent promptly after the receipt by the Purchase Contract Agent of such notice that a Holder of a Corporate Unit has elected, in accordance with the procedures specified in Section 5.4(a)(i) of the 13

17 Purchase Contract Agreement to settle its Purchase Contract with Cash and (ii) payment of the amount required to settle such Purchase Contract by such Holder on or prior to 11:00 a.m., New York City time, on the Business Day immediately preceding the Purchase Contract Settlement Date in lawful money of the United States by certified or cashiers' check or wire transfer in immediately available funds payable to or upon the order of the Company, then the Collateral Agent shall, at the written direction of the Company, promptly invest any Cash received from a Holder in connection with a Cash Settlement in Permitted Investments. Upon receipt of the proceeds upon the maturity of the Permitted Investments on the Purchase Contract Settlement Date, the Collateral Agent shall pay the portion of such proceeds and deliver any certified or cashiers' checks received and any funds so wired, in an aggregate amount equal to the Purchase Price, to the Company on the Purchase Contract Settlement Date, and shall distribute any funds in respect of the interest earned from the Permitted Investments to the Purchase Contract Agent for payment to the relevant Holders. (b) If a Holder of a Corporate Unit (unless a Tax Event Redemption or a Successful Initial Remarketing has occurred) fails to notify the Purchase Contract Agent of its intention to make a Cash Settlement in accordance with Section 5.4(a)(i) of the Purchase Contract Agreement, such failure shall constitute an event of default under the Purchase Contract Agreement and hereunder, and the Holder shall be deemed to have consented to the disposition of the Pledged Debentures pursuant to the remarketing as described in Section 5.4(b) of the Purchase Contract Agreement, which is incorporated herein by reference. If a Holder of a Corporate Unit does notify the Purchase Contract Agent as provided in Section 5.4(a)(i) of the Purchase Contract Agreement of its intention to pay the Purchase Price in cash, but fails to make such payment as required by Section 5.4(a)(ii) of the Purchase Contract Agreement, the Pledged Debentures of such a Holder will not be remarketed but instead the Collateral Agent, for the benefit of the Company, will exercise its rights as a secured party with respect to such Debentures at the direction of the Company to retain or dispose of the Collateral in accordance with applicable law. In addition, in the event of a Failed Secondary Remarketing as described in Section 5.4(b) of the Purchase Contract Agreement, such Failed Secondary Remarketing shall constitute an additional event of default hereunder by such Holder and the Collateral Agent, for the benefit of the Company, will also exercise its rights as a secured party with respect to such Pledged Debentures at the direction of the Company to retain or dispose of the Collateral in accordance with applicable law. SECTION 4.5 Early Settlement Upon written notice to the Collateral Agent by the Purchase Contract Agent that one or more Holders of Securities have elected to effect Early Settlement of their respective obligations under the Purchase Contracts forming a part of such Securities in accordance with the terms of the Purchase Contracts and the Purchase Contract Agreement (setting forth the number of such Purchase Contracts as to which such Holders have elected to effect Early Settlement), and that the Purchase Contract Agent has received from such Holders, and paid to the Company as confirmed in writing by the Company, the related Early 14

18 Settlement Amounts pursuant to the terms of the Purchase Contracts and the Purchase Contract Agreement and that all conditions to such Early Settlement have been satisfied, then the Collateral Agent shall release from the Pledge, (a) Pledged Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio in the case of a Holder of Corporate Units or (b) Pledged Treasury Securities in the case of a Holder of Treasury Units, as the case may be, in each case with an aggregate principal amount, as the case may be, equal to the product of (i) the Stated Amount times (ii) the number of such Purchase Contracts as to which such Holders have elected to effect Early Settlement and shall Transfer all such Pledged Debentures, the appropriate Applicable Ownership Interest of the Treasury Portfolio or the Pledged Treasury Securities, as the case may be, free and clear of the Pledge created hereby, to the Purchase Contract Agent for the benefit of such Holders. SECTION 4.6 Application of Proceeds; Settlement(a) In the event a Holder of Corporate Units (unless a Tax Event Redemption or a Successful Initial Remarketing has occurred) has not elected to make an effective Cash Settlement by notifying the Purchase Contract Agent (with a copy to the Collateral Agent) in the manner provided for in paragraph 5.4(a)(i) in the Purchase Contract Agreement and has not made an Early Settlement of the Purchase Contracts underlying its Corporate Units, such Holder shall be deemed to have elected to pay for the shares of Common Stock to be issued under such Purchase Contracts from the Proceeds of the related Pledged Debentures. The Collateral Agent shall, by 10:00 a.m., New York City time, on the fourth Business Day immediately preceding the Purchase Contract Settlement Date, without any instruction from such Holder of Corporate Units, present the related Pledged Debentures to the Remarketing Agent for remarketing. Upon receiving such Pledged Debentures, the Remarketing Agent, pursuant to the terms of the Remarketing Agreement and the Supplemental Remarketing Agreement, will use its reasonable efforts to remarket such Pledged Debentures on such date at a price of approximately 100.5% (but not less than 100%) of the aggregate Value of such Pledged Debentures. After deducting as the Remarketing Fee an amount not exceeding 25 basis points (.25%) of the aggregate Value of the remarketed Pledged Debentures from any amount of such Proceeds in excess of the aggregate Value of the Remarketed Pledged Debentures, the Remarketing Agent will remit the entire amount of the Proceeds of such remarketing to the Collateral Agent. On the Purchase Contract Settlement Date, the Collateral Agent shall apply that portion of the Proceeds from such remarketing equal to the aggregate Value of such remarketed Pledged Debentures to satisfy in full the obligations of such Holders of Corporate Units to pay the Purchase Price to purchase the Common Stock under the related Purchase Contracts. The remaining portion of such Proceeds, if any, shall be remitted by the Collateral Agent to the Purchase Contract Agent for payment to the Holders. If the Remarketing Agent advises the Collateral Agent in writing that it cannot remarket the related Pledged Debentures of such Holders of Corporate Units at a price not less than 100% of the aggregate Value of such Pledged Debentures or if the remarketing shall not have occurred because a condition precedent to the remarketing shall not have been fulfilled, thus resulting in a Failed Secondary Remarketing and an event of default under the Purchase Contract Agreement and 15

19 hereunder, the Collateral Agent, for the benefit of the Company will, at the written direction of the Company, retain or dispose of the Pledged Debentures in accordance with applicable law and satisfy in full, from any such disposition or retention, such Holder's obligation to pay the Purchase Price for the Common Stock. (b) In the event a Holder of Treasury Units or Corporate Units (if a Tax Event Redemption or a Successful Initial Remarketing has occurred) has not made an Early Settlement of the Purchase Contracts underlying its Treasury Units or Corporate Units, such Holder shall be deemed to have elected to pay for the shares of Common Stock to be issued under such Purchase Contracts from the Proceeds of the related Pledged Treasury Securities or the appropriate Applicable Ownership Interest (as defined in clause (A) of the definition of such term) of the Treasury Portfolio, as the case may be. On the Business Day immediately prior to the Purchase Contract Settlement Date, the Collateral Agent shall, at the written direction of the Purchase Contract Agent, which written direction shall be furnished to the Collateral Agent prior to 11:30 a.m. New York City time, invest the Cash proceeds of the maturing Pledged Treasury Securities or the maturing appropriate Applicable Ownership Interest (as defined in clause (A) of the definition of such term) of the Treasury Portfolio, as the case may be, in overnight Permitted Investments. Without receiving any instruction from any such Holder of Treasury Units or Corporate Units, the Collateral Agent shall apply the Proceeds of the related Pledged Treasury Securities or appropriate Applicable Ownership Interest (as defined in clause (A) of the definition of such term) of the Treasury Portfolio to the settlement of such Purchase Contracts on the Purchase Contract Settlement Date. In the event the sum of the Proceeds from the related Pledged Treasury Securities or appropriate Applicable Ownership Interest (as defined in clause (A) of the definition of such term) of the Treasury Portfolio, as the case may be, and the investment earnings from the investment in overnight Permitted Investments is in excess of the aggregate Purchase Price of the Purchase Contracts being settled thereby, the Collateral Agent shall remit such excess, when received, to the Purchase Contract Agent for the benefit of the Holders. (c) Pursuant to the Remarketing Agreement and subject to the terms of the Supplemental Remarketing Agreement, on or prior to the second Business Day immediately preceding the Initial Remarketing Date or the Secondary Remarketing Date, as applicable, but no earlier than the Payment Date immediately preceding such date, holders of Separate Debentures may elect to have their Separate Debentures remarketed by delivering their Separate Debentures, together with a notice of such election, substantially in the form of Exhibit C hereto, to the Custodial Agent. The Custodial Agent shall hold such Separate Debentures in an account separate from the Collateral Account. A holder of Separate Debentures electing to have its Separate Debentures remarketed will also have the right to withdraw such election by written notice to the Custodial Agent, substantially in the form of Exhibit D hereto, on or prior to the second Business Day immediately preceding the Initial Remarketing Date or the Secondary Remarketing Date, as applicable, upon which 16

20 notice the Custodial Agent shall return such Separate Debentures to such holder. On the Business Day immediately preceding the Initial Remarketing Date or the Secondary Remarketing Date, as applicable, the Custodial Agent shall notify the Remarketing Agent of the aggregate principal amount of the separate Debentures to be remarketed and will deliver to the Remarketing Agent for remarketing all Separate Debentures delivered to the Custodial Agent pursuant to this Section 4.6(c) and not withdrawn pursuant to the terms hereof prior to such date. After deducting the Remarketing Fee to the extent permitted under the terms of the Remarketing Agreement, the Remarketing Agent will remit to the Custodial Agent the remaining portion of the proceeds for the benefit of such holders. In the event of a Failed Initial Remarketing or a Failed Secondary Remarketing, as applicable, the Remarketing Agent will promptly return such Separate Debentures to the Custodial Agent for redelivery to such holders. ARTICLE V VOTING RIGHTS - DEBENTURES The Purchase Contract Agent may exercise, or refrain from exercising, any and all voting and other consensual rights pertaining to the Pledged Debentures or any part thereof for any purpose not inconsistent with the terms of this Agreement and in accordance with the terms of the Purchase Contract Agreement; provided, that the Purchase Contract Agent shall not exercise or, as the case may be, shall not refrain from exercising such right if, in the judgment of the Company, such action would impair or otherwise have a material adverse effect on the value of all or any of the Pledged Debentures; and provided, further, that the Purchase Contract Agent shall give the Company and the Collateral Agent at least five days' prior written notice of the manner in which it intends to exercise, or its reasons for refraining from exercising, any such right. Upon receipt of any notices and other communications in respect of any Pledged Debentures, including notice of any meeting at which holders of Debentures are entitled to vote or solicitation of consents, waivers or proxies of holders of Debentures, the Collateral Agent shall use reasonable efforts to send promptly to the Purchase Contract Agent such notice or communication, and as soon as reasonably practicable after receipt of a written request therefor from the Purchase Contract Agent, execute and deliver to the Purchase Contract Agent such proxies and other instruments in respect of such Pledged Debentures (in form and substance satisfactory to the Collateral Agent) as are prepared by the Purchase Contract Agent with respect to the Pledged Debentures. ARTICLE VI RIGHTS AND REMEDIES; TAX EVENT REDEMPTION SECTION 6.1 Rights and Remedies of the Collateral Agent(a) In addition to the rights and remedies specified in Section 4.4 hereof or otherwise available at law or in equity, after an event of default hereunder, the Collateral Agent shall have all of the rights and remedies with respect to the Collateral of a secured party under the Uniform Commercial Code (or any successor thereto) as in effect in 17

21 the State of New York from time to time (the "Code") (whether or not, to the extent permitted by law, the Code is in effect in the jurisdiction where the rights and remedies are asserted) and the TRADES Regulations and such additional rights and remedies to which a secured party is entitled under the laws in effect in any jurisdiction where any rights and remedies hereunder may be asserted. Wherever reference is made in this Agreement to any section of the Code, such reference shall be deemed to include a reference to any provision of the Code which is a successor to, or amendment of, such section. Without limiting the generality of the foregoing, such remedies may include, to the extent permitted by applicable law, (i) retention of the Pledged Debentures or other Collateral in full satisfaction of the Holders obligations under the Purchase Contracts or (ii) sale of the Pledged Debentures or other Collateral in one or more public or private sales. (b) Without limiting any rights or powers otherwise granted by this Agreement to the Collateral Agent, in the event the Collateral Agent is unable to make payments to the Company on account of the appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such term) of the Treasury Portfolio or on account of principal payments of any Pledged Treasury Securities as provided in Article 3 hereof in satisfaction of the obligations of the Holder of the Securities of which such Pledged Treasury Securities, or the appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such term) of the Treasury Portfolio, as applicable, is a part under the related Purchase Contracts, the inability to make such payments shall constitute an event of default hereunder and the Collateral Agent shall have and may exercise, with reference to such Pledged Treasury Securities, or such appropriate Applicable Ownership Interest (as specified in clause (A) of the definition of such term) of the Treasury Portfolio, as applicable, and such obligations of such Holder, any and all of the rights and remedies available to a secured party under the Code and the TRADES Regulations after default by a debtor, and as otherwise granted herein or under any other law. (c) Without limiting any rights or powers otherwise granted by this Agreement to the Collateral Agent, the Collateral Agent is hereby irrevocably authorized to receive and collect all payments of (i) principal and interest on the Pledged Debentures, (ii) the principal amount of the Pledged Treasury Securities, or (iii) the appropriate Applicable Ownership Interest of the Treasury Portfolio, subject, in each case, to the provisions of Article 3, and as otherwise granted herein. (d) The Purchase Contract Agent, individually and as attorney-in-fact for each Holder of Securities, agrees that, from time to time, upon the written request of the Collateral Agent, the Purchase Contract Agent or such Holder shall execute and deliver such further documents and do such other acts and things as the Collateral Agent may reasonably request in order to maintain the Pledge, and the perfection and priority thereof, and to confirm the rights of the Collateral Agent hereunder. The Purchase Contract Agent shall have no liability to any Holder for executing any documents or taking any such acts requested by the Collateral Agent hereunder, except for liability for its own negligent act, its own negligent failure to act or its 18

22 own willful misconduct. SECTION 6.2 Tax Event Redemption Upon the occurrence of a Tax Event Redemption prior to the Purchase Contract Settlement Date, the aggregate Redemption Price payable on the Tax Event Redemption Date with respect to the Pledged Debentures shall be delivered to the Collateral Agent by the Debenture Trustee on or prior to 12:00 p.m., New York City time, by check or wire transfer in immediately available funds at such place and at such account as may be designated by the Collateral Agent in exchange for the Pledged Debentures. In the event the Collateral Agent receives such Redemption Price, the Collateral Agent will, at the written direction of the Company, apply an amount, out of such Redemption Price, equal to the aggregate Redemption Amount with respect to the Pledged Debentures to purchase from the Quotation Agent the Treasury Portfolio and promptly remit the remaining portion of such Redemption Price to the Purchase Contract Agent for payment to the Holders of Corporate Units. The Collateral Agent shall Transfer the Treasury Portfolio to the Collateral Account to secure the obligation of all Holders of Corporate Units to purchase Common Stock of the Company under the Purchase Contracts constituting a part of such Corporate Units, in substitution for the Pledged Debentures. Thereafter the Collateral Agent shall have such security interests, rights and obligations with respect to the Treasury Portfolio as it had in respect of the Pledged Debentures as provided in Articles 2, 3, 4, 5 and 6, and any reference herein to the Debentures shall be deemed to be reference to such Treasury Portfolio, and any reference herein to interest on the Debentures shall be deemed to be a reference to distributions on such Treasury Portfolio. SECTION 6.3 Initial Remarketing. The Collateral Agent shall, by 10:00 a.m., New York City time, on the fourth Business Day immediately preceding ____________, 2003, without any instruction from any Holder of Corporate Units, present the related Pledged Debentures to the Remarketing Agent for remarketing. Upon receiving such Pledged Debentures, the Remarketing Agent, pursuant to the terms of the Remarketing Agreement and the Supplemental Remarketing Agreement, will use its reasonable efforts to remarket such Pledged Debentures on such date at a price of approximately 100.5% (but not less than 100%) of the Treasury Portfolio Purchase Price. After deducting as the Remarketing Fee an amount not exceeding 25 basis points (.25%) of the Treasury Portfolio Purchase Price from any amount of such Proceeds in excess of the Treasury Portfolio Purchase Price, the Remarketing Agent will remit the entire amount of the Proceeds of such remarketing to the Collateral Agent on or prior to 12:00 p.m., New York City time, by check or wire transfer in immediately available funds at such place and at such account as may be designated by the Collateral Agent in exchange for the Pledged Debentures. In the event the Collateral Agent receives such Proceeds, the Collateral Agent will, at the written direction of the Company, apply an amount equal to the Treasury Portfolio Purchase Price to purchase from the Quotation Agent the Treasury Portfolio and promptly remit the remaining portion of such Proceeds to the Purchase Contract Agent for payment to the Holders of Corporate Units. The Collateral Agent shall Transfer the Treasury Portfolio to the Collateral Account to secure the obligation of 19

23 all Holders of Corporate Units to purchase Common Stock of the Company under the Purchase Contracts constituting a part of such Corporate Units, in substitution for the Pledged Debentures. Thereafter the Collateral Agent shall have such security interests, rights and obligations with respect to the Treasury Portfolio as it had in respect of the Pledged Debentures as provided in Articles 2, 3, 4, 5 and 6, and any reference herein to the Debentures shall be deemed to be reference to such Treasury Portfolio, and any reference herein to interest on the Debentures shall be deemed to be a reference to distributions on such Treasury Portfolio. SECTION 6.4 Substitutions Whenever a Holder has the right to substitute Treasury Securities, Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, for Collateral held by the Collateral Agent, such substitution shall not constitute a novation of the security interest created hereby. ARTICLE VII REPRESENTATIONS AND WARRANTIES; COVENANTS SECTION 7.1 Representations and Warranties The Holders from time to time, acting through the Purchase Contract Agent as their attorney-in-fact (it being understood that the Purchase Contract Agent shall not be liable for any representation or warranty made by or on behalf of a Holder), hereby represent and warrant to the Collateral Agent, which representations and warranties shall be deemed repeated on each day a Holder Transfers Collateral that: (a) such Holder has the power to grant a security interest in and lien on the Collateral; (b) such Holder is the sole beneficial owner of the Collateral and, in the case of Collateral delivered in physical form, is the sole holder of such Collateral and is the sole beneficial owner of, or has the right to Transfer, the Collateral it Transfers to the Collateral Agent, free and clear of any security interest, lien, encumbrance, call, liability to pay money or other restriction other than the security interest and lien granted under Article 2 hereof; (c) upon the Transfer of the Collateral to the Collateral Account, the Collateral Agent, for the benefit of the Company, will have a valid and perfected first priority security interest therein (assuming that any central clearing operation or any Intermediary or other entity not within the control of the Holder involved in the Transfer of the Collateral, including the Collateral Agent, gives the notices and takes the action required of it hereunder and under applicable law for perfection of that interest and assuming the establishment and exercise of control pursuant to Section 2.2 hereof); and (d) the execution and performance by the Holder of its obligations under this Agreement will not result in the creation of any security interest, lien or other 20

24 encumbrance on the Collateral other than the security interest and lien granted under Article 2 hereof or violate any provision of any existing law or regulation applicable to it or of any mortgage, charge, pledge, indenture, contract or undertaking to which it is a party or which is binding on it or any of its assets. SECTION 7.2 Covenants The Holders from time to time, acting through the Purchase Contract Agent as their attorney-in-fact (it being understood that the Purchase Contract Agent shall not be liable for any covenant made by or on behalf of a Holder), hereby covenant to the Collateral Agent that for so long as the Collateral remains subject to the Pledge: (a) neither the Purchase Contract Agent nor such Holders will create or purport to create or allow to subsist any mortgage, charge, lien, pledge or any other security interest whatsoever over the Collateral or any part of it other than pursuant to this Agreement; and (b) neither the Purchase Contract Agent nor such Holders will sell or otherwise dispose (or attempt to dispose) of the Collateral or any part of it except for the beneficial interest therein, subject to the pledge hereunder, transferred in connection with the Transfer of the Securities. ARTICLE VIII THE COLLATERAL AGENT It is hereby agreed as follows: SECTION 8.1 Appointment, Powers and Immunities The Collateral Agent shall act as Agent for the Company hereunder with such powers as are specifically vested in the Collateral Agent by the terms of this Agreement, together with such other powers as are reasonably incidental thereto. Each of the Collateral Agent, the Custodial Agent and the Securities Intermediary: (a) shall have no duties or responsibilities except those expressly set forth in this Agreement and no implied covenants or obligations shall be inferred from this Agreement against any of them, nor shall any of them be bound by the provisions of any agreement beyond the specific terms hereof; (b) shall not be responsible for any recitals contained in this Agreement, or in any certificate or other document referred to or provided for in, or received by it under, this Agreement, the Securities or the Purchase Contract Agreement, or for the value, validity, effectiveness, genuineness, enforceability or sufficiency of this Agreement (other than as against the Collateral Agent), the Securities or the Purchase Contract Agreement or any other document referred to or provided for herein or therein or for any failure by the Company or any other Person (except the Collateral Agent, the Custodial Agent or the Securities Intermediary, as the case may be) to perform any of its obligations hereunder or thereunder or for the perfection, priority or, except as expressly required hereby, maintenance of any security interest created hereunder; (c) shall not be required to initiate or conduct any litigation or collection proceedings hereunder (except in the case of the Collateral 21

25 Agent, pursuant to directions furnished under Section 8.2 hereof, subject to Section 8.6 hereof); (d) shall not be responsible for any action taken or omitted to be taken by it hereunder or under any other document or instrument referred to or provided for herein or in connection herewith or therewith, except for its own negligence, bad faith or willful misconduct; (e) shall not be required to advise any party as to selling or retaining, or taking or refraining from taking any action with respect to, the Securities or other property deposited hereunder; and (f) shall not be responsible for the acts or omissions of any clearing corporation with whom collateral is deposited. Subject to the foregoing, during the term of this Agreement, the Collateral Agent shall take all reasonable action in connection with the safekeeping and preservation of the Collateral hereunder. No provision of this Agreement shall require the Collateral Agent, the Custodial Agent or the Securities Intermediary to expend or risk its own funds or otherwise incur any financial liability in the performance of any of its duties hereunder. In no event shall the Collateral Agent, the Custodial Agent or the Securities Intermediary be liable for any amount in excess of the Value of the Collateral. Notwithstanding the foregoing, the Collateral Agent, the Custodial Agent, the Purchase Contract Agent and Securities Intermediary, each in its individual capacity, hereby waive any right of setoff, bankers lien, liens or perfection rights as securities intermediary or any counterclaim with respect to any of the Collateral. SECTION 8.2 Instructions of the Company The Company shall have the right, by one or more instruments in writing executed and delivered to the Collateral Agent, the Custodial Agent or the Securities Intermediary, as the case may be, to direct the time, method and place of conducting any proceeding for the realization of any right or remedy available to the Collateral Agent, or of exercising any power conferred on the Collateral Agent, the Custodial Agent or the Securities Intermediary, as the case may be, or to direct the taking or refraining from taking of any action authorized by this Agreement; provided, however, that (i) such direction shall not conflict with the provisions of any law or of this Agreement and (ii) the Collateral Agent, the Custodial Agent and the Securities Intermediary shall be adequately indemnified as provided herein. Nothing in this Section 8.2 shall impair the right of the Collateral Agent in its discretion to take any action or omit to take any action which it deems proper and which is not inconsistent with such direction. SECTION 8.3 Reliance Each of the Securities Intermediary, the Custodial Agent and the Collateral Agent shall be entitled conclusively to rely upon any certification, order, judgment, opinion, notice or other communication (including, without limitation, any thereof by telephone, telecopy, telex or facsimile) believed by it to be genuine and correct and to have been signed or sent by or on behalf of the proper Person or Persons (without being required to determine the correctness of any fact stated therein), and upon advice and statements of legal counsel and other experts selected by the Collateral Agent, the Custodial Agent or the Securities Intermediary, as the case may be. As to any matters not expressly 22

26 provided for by this Agreement, the Collateral Agent, the Custodial Agent and the Securities Intermediary shall in all cases be fully protected in acting, or in refraining from acting, hereunder in accordance with instructions given by the Company in accordance with this Agreement. SECTION 8.4 Rights in other Capacities The Collateral Agent, the Custodial Agent and the Securities Intermediary and their affiliates may (without having to account therefor to the Company) accept deposits from, lend money to, make their investments in and generally engage in any kind of banking, trust or other business with the Purchase Contract Agent, any Holder of Securities and any holder of separate Debentures (and any of their respective subsidiaries or affiliates) as if it were not acting as the Collateral Agent, the Custodial Agent or the Securities Intermediary, as the case may be, and the Collateral Agent, the Custodial Agent and the Securities Intermediary and their affiliates may accept fees and other consideration from the Purchase Contract Agent, any Holder of Securities or any holder of separate Debentures without having to account for the same to the Company; provided that each of the Securities Intermediary, the Custodial Agent and the Collateral Agent covenants and agrees with the Company that it shall not accept, receive or permit there to be created in favor of itself and shall take no affirmative action to permit there to be created in favor of any other Person, any security interest, lien or other encumbrance of any kind in or upon the Collateral and the Collateral shall be segregated or the books and records of the Collateral Agent and not commingled with any other assets of any such Person. SECTION 8.5 Non-Reliance None of the Securities Intermediary, the Custodial Agent or the Collateral Agent shall be required to keep itself informed as to the performance or observance by the Purchase Contract Agent or any Holder of Securities of this Agreement, the Purchase Contract Agreement, the Securities or any other document referred to or provided for herein or therein or to inspect the properties or books of the Purchase Contract Agent or any Holder of Securities. The Collateral Agent, the Custodial Agent and the Securities Intermediary shall not have any duty or responsibility to provide the Company or the Remarketing Agent with any credit or other information concerning the affairs, financial condition or business of the Purchase Contract Agent, any Holder of Securities or any holder of separate Debentures (or any of their respective subsidiaries or affiliates) that may come into the possession of the Collateral Agent, the Custodial Agent or the Securities Intermediary or any of their respective affiliates. SECTION 8.6 Compensation and Indemnity The Company agrees: (i) to pay each of the Collateral Agent and the Custodial Agent from time to time such compensation as shall be agreed in writing between the Company and the Collateral Agent or the Custodial Agent, as the case may be, for all services rendered by each of them hereunder and (ii) to indemnify the Collateral Agent, the Custodial Agent and the Securities Intermediary for, and to hold each of them harmless from and against, any loss, liability or reasonable out-of-pocket expense incurred without negligence, willful misconduct or bad faith on its part, arising out of or in connection 23

27 with the acceptance or administration of its powers and duties under this Agreement, including the reasonable out-of-pocket costs and expenses (including reasonable fees and expenses of counsel) of defending itself against any claim or liability in connection with the exercise or performance of such powers and duties. The Collateral Agent, the Custodial Agent and the Securities Intermediary shall each promptly notify the Company of any third party claim which may give rise to the indemnity hereunder and give the Company the opportunity to participate in the defense of such claim with counsel reasonably satisfactory to the indemnified party, and no such claim shall be settled without the written consent of the Company, which consent shall not be unreasonably withheld. SECTION 8.7 Failure to Act In the event of any ambiguity in the provisions of this Agreement or any dispute between or conflicting claims by or among the parties hereto or any other Person with respect to any funds or property deposited hereunder, the Collateral Agent and the Custodial Agent shall be entitled, after prompt notice to the Company and the Purchase Contract Agent, at its sole option, to refuse to comply with any and all claims, demands or instructions with respect to such property or funds so long as such dispute or conflict shall continue, and neither the Collateral Agent nor the Custodial Agent shall be or become liable in any way to any of the parties hereto for its failure or refusal to comply with such conflicting claims, demands or instructions. The Collateral Agent and the Custodial Agent shall be entitled to refuse to act until either (i) such conflicting or adverse claims or demands shall have been finally determined by a court of competent jurisdiction or settled by agreement between the conflicting parties as evidenced in a writing, satisfactory to the Collateral Agent or the Custodial Agent, as the case may be, or (ii) the Collateral Agent or the Custodial Agent, as the case may be, shall have received security or an indemnity reasonably satisfactory to the Collateral Agent or the Custodial Agent, as the case may be, sufficient to save the Collateral Agent or the Custodial Agent, as the case may be, harmless from and against any and all loss, liability or reasonable out-of-pocket expense which the Collateral Agent or the Custodial Agent, as the case may be, may incur by reason of its acting without bad faith, willful misconduct or negligence. The Collateral Agent or the Custodial Agent may in addition elect to commence an interpleader action or seek other judicial relief or orders as the Collateral Agent or the Custodial Agent, as the case may be, may deem necessary. Notwithstanding anything contained herein to the contrary, neither the Collateral Agent nor the Custodial Agent shall be required to take any action that is in its opinion contrary to law or to the terms of this Agreement, or which would in its opinion subject it or any of its officers, employees or directors to liability. SECTION 8.8 Resignation Subject to the appointment and acceptance of a successor Collateral Agent or Custodial Agent as provided below, (a) the Collateral Agent and the Custodial Agent may resign at any time by giving notice thereof to the Company and the Purchase Contract Agent as attorney-in-fact for the Holders of Securities, (b) the Collateral Agent and the Custodial Agent may be removed at any time by the Company and (c) if the Collateral Agent or the Custodial Agent fails to perform any of its material obligations hereunder in any material 24

28 respect for a period of not less than 20 days after receiving written notice of such failure by the Purchase Contract Agent and such failure shall be continuing, the Collateral Agent or the Custodial Agent may be removed by the Purchase Contract Agent. The Purchase Contract Agent shall promptly notify the Company of any removal of the Collateral Agent pursuant to clause (c) of the immediately preceding sentence. Upon any such resignation or removal, the Company shall have the right to appoint a successor Collateral Agent or Custodial Agent, as the case may be. If no successor Collateral Agent or Custodial Agent, as the case may be, shall have been so appointed and shall have accepted such appointment within 30 days after the retiring Collateral Agent's or Custodial Agent's giving of notice of resignation or such removal, then the retiring Collateral Agent or Custodial Agent, as the case may be, may petition any court of competent jurisdiction for the appointment of a successor Collateral Agent or Custodial Agent, as the case may be. Each of the Collateral Agent and the Custodial Agent shall be a bank which has an office in New York, New York with a combined capital and surplus of at least $75,000,000. Upon the acceptance of any appointment as Collateral Agent or Custodial Agent, as the case may be, hereunder by a successor Collateral Agent or Custodial Agent, as the case may be, such successor shall thereupon succeed to and become vested with all the rights, powers, privileges and duties of the retiring Collateral Agent or Custodial Agent, as the case may be, and the retiring Collateral Agent or Custodial Agent, as the case may be, shall take all appropriate action to transfer any money and property held by it hereunder (including the Collateral) to such successor. The retiring Collateral Agent or Custodial Agent shall, upon such succession, be discharged from its duties and obligations as Collateral Agent or Custodial Agent hereunder. After any retiring Collateral Agent's or Custodial Agent's resignation hereunder as Collateral Agent or Custodial Agent, the provisions of this Article 8 shall continue in effect for its benefit in respect of any actions taken or omitted to be taken by it while it was acting as the Collateral Agent or Custodial Agent. Any resignation or removal of the Collateral Agent hereunder shall be deemed for all purposes of this Agreement as the simultaneous resignation or removal of the Custodial Agent and the Securities Intermediary. SECTION 8.9 Right to Appoint Agent or Advisor The Collateral Agent shall have the right to appoint agents or advisors in connection with any of its duties hereunder, and the Collateral Agent shall not be liable for any action taken or omitted by, or in reliance upon the advice of, such agents or advisors selected in good faith. The appointment of agents pursuant to this Section 8.9 shall be subject to prior consent of the Company, which consent shall not be unreasonably withheld. SECTION 8.10 Survival The provisions of this Article 8 shall survive termination of this Agreement and the resignation or removal of the Collateral Agent or the Custodial Agent. SECTION 8.11 Exculpation Anything in this Agreement to the contrary notwithstanding, in no event shall any of the Collateral Agent, the Custodial Agent or the Securities Intermediary or their officers, employees or agents be liable 25

29 under this Agreement to any third party for indirect, special, punitive, or consequential loss or damage of any kind whatsoever, including lost profits, whether or not the likelihood of such loss or damage was known to the Collateral Agent, the Custodial Agent or the Securities Intermediary, or any of them, incurred without any act or deed that is found to be attributable to gross negligence or willful misconduct on the part of the Collateral Agent, the Custodial Agent or the Securities Intermediary. ARTICLE IX AMENDMENT SECTION 9.1 Amendment Without Consent of Holders Without the consent of any Holders or the holders of any Separate Debentures, the Company, the Collateral Agent, the Custodial Agent, the Securities Intermediary and the Purchase Contract Agent, at any time and from time to time, may amend this Agreement, in form satisfactory to the Company, the Collateral Agent, the Custodial Agent, the Securities Intermediary and the Purchase Contract Agent, for any of the following purposes: (a) to evidence the succession of another Person to the Company, and the assumption by any such successor of the covenants of the Company; or (b) to add to the covenants of the Company for the benefit of the Holders, or to surrender any right or power herein conferred upon the Company so long as such covenants or such surrender do not adversely affect the validity, perfection or priority of the security interests granted or created hereunder; or (c) to evidence and provide for the acceptance of appointment hereunder by a successor Collateral Agent, Securities Intermediary or Purchase Contract Agent; or (d) to cure any ambiguity, to correct or supplement any provisions herein which may be inconsistent with any other such provisions herein, or to make any other provisions with respect to such matters or questions arising under this Agreement, provided such action shall not adversely affect the interests of the Holders. SECTION 9.2 Amendment with Consent of Holders With the consent of the Holders of not less than a majority of the Purchase Contracts at the time outstanding, by Act of said Holders delivered to the Company, the Purchase Contract Agent or the Collateral Agent, as the case may be, the Company, when duly authorized, the Purchase Contract Agent, the Collateral Agent, the Custodial Agent and the Securities Intermediary may amend this Agreement for the purpose of modifying in any manner the provisions of this Agreement or the rights of the 26

30 Holders in respect of the Securities; provided, however, that no such supplemental agreement shall, without the consent of the Holder of each Outstanding Security affected thereby, (a) change the amount or type of Collateral underlying a Security (except for the rights of holders of Corporate Units to substitute the Treasury Securities for the Pledged Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be, or the rights of Holders of Treasury Units to substitute Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as applicable, for the Pledged Treasury Securities), impair the right of the Holder of any Security to receive distributions on the underlying Collateral or otherwise adversely affect the Holder's rights in or to such Collateral; or (b) otherwise effect any action that would require the consent of the Holder of each Outstanding Security affected thereby pursuant to the Purchase Contract Agreement if such action were effected by an agreement supplemental thereto; (c) reduce the amount payable or distributable to Holders upon the remarketing of Debentures; or (d) reduce the percentage of Purchase Contracts the consent of whose Holders is required for any such amendment. If any amendment referred to above would adversely affect only the Corporate Units or the Treasury Units, then only the affected class of Holders shall be entitled to vote on the amendment and the amendment shall not be effective except with the consent of the Holders of not less than a majority of the affected class. It shall not be necessary for any Act of Holders under this Article 9 to approve the particular form of any proposed amendment, but it shall be sufficient if such Act shall approve the substance thereof. SECTION 9.3 Execution of Amendments In executing any amendment permitted by this Section, the Collateral Agent, the Custodial Agent, the Securities Intermediary and the Purchase Contract Agent shall be entitled to receive and (subject to Section 8.1 hereof, with respect to the Collateral Agent, and Section 7.1 of the Purchase Contract Agreement, with respect to the Purchase Contract Agent) shall be fully protected in relying upon, an Opinion of Counsel stating that the execution of such amendment is authorized or permitted by this Agreement and that all conditions precedent, if any, to the execution and delivery of such amendment have been satisfied. All amendments must be in writing, signed by all parties to this Agreement. SECTION 9.4 Effect of Amendments Upon the execution of any amendment under this Article 9, this Agreement shall be modified in accordance 27

31 therewith, and such amendment shall form a part of this Agreement for all purposes; and every Holder of Certificates theretofore or thereafter authenticated, executed on behalf of the Holders and delivered under the Purchase Contract Agreement shall be bound thereby. SECTION 9.5 Reference to Amendments Security Certificates authenticated, executed on behalf of the Holders and delivered after the execution of any amendment pursuant to this Article 9 may, and shall if required by the Collateral Agent or the Purchase Contract Agent, bear a notation in form approved by the Purchase Contract Agent and the Collateral Agent as to any matter provided for in such amendment. If the Company shall so determine, new Security Certificates so modified as to conform, in the opinion of the Collateral Agent, the Purchase Contract Agent and the Company, to any such amendment may be prepared and executed by the Company and authenticated, executed on behalf of the Holders and delivered by the Purchase Contract Agent in accordance with the Purchase Contract Agreement and without charge or expense to Holders in exchange for Outstanding Security Certificates. ARTICLE X MISCELLANEOUS SECTION 10.1 No Waiver To the extent permitted by law, no failure on the part of any party hereto or any of its agents to exercise, and no course of dealing with respect to, and no delay in exercising, any right, power or remedy hereunder shall operate as a waiver thereof; nor shall any single or partial exercise by any party hereto or any of its agents of any right, power or remedy hereunder preclude any other or further exercise thereof or the exercise of any other right, power or remedy. To the extent permitted by law, the remedies herein are cumulative and are not exclusive of any remedies provided by law. SECTION 10.2 Governing Law THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK. Without limiting the foregoing, the above choice of law is expressly agreed to by the Securities Intermediary, the Collateral Agent and the Holders from time to time acting through the Purchase Contract Agent, as their attorney-in-fact, in connection with the establishment and maintenance of the Collateral Account. The Company, the Collateral Agent and the Holders from time to time of the Securities, acting through the Purchase Contract Agent as their attorney-in-fact, hereby submit to the nonexclusive jurisdiction of the United States District Court for the Southern District of New York and of any New York state court sitting in New York City for the purposes of all legal proceedings arising out of or relating to this Agreement or the transactions contemplated hereby. The Company, the Collateral Agent and the Holders from time to time of the Securities, acting through the Purchase Contract Agent as their attorney-in-fact, irrevocably waive, to the fullest extent permitted by applicable law, any objection which they may now or hereafter have to the laying of the venue of any such proceeding brought 28

32 in such a court and any claim that any such proceeding brought in such a court has been brought in an inconvenient forum, as well as to trial by jury. SECTION 10.3 Notices All notices, requests, consents and other communications provided for herein (including, without limitation, any modifications of, or waivers or consents under, this Agreement) shall be given or made in writing (including, without limitation, by telecopy) delivered to the intended recipient at the "Address for Notices" specified below its name on the signature pages hereof or, as to any party, at such other address as shall be designated by such party in a notice to the other parties. Except as otherwise provided in this Agreement, all such communications shall be deemed to have been duly given when transmitted by telecopier or personally delivered or, in the case of a mailed notice, upon receipt, in each case given or addressed as aforesaid. SECTION 10.4 Successors and Assigns This Agreement shall be binding upon and inure to the benefit of the respective successors and assigns of the Company, the Collateral Agent, the Custodial Agent, the Securities Intermediary and the Purchase Contract Agent, and the Holders from time to time of the Securities, by their acceptance of the same, shall be deemed to have agreed to be bound by the provisions hereof and to have ratified the agreements of, and the grant of the Pledge hereunder by, the Purchase Contract Agent. SECTION 10.5 Counterparts This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument, and any of the parties hereto may execute this Agreement by signing any such counterpart. SECTION 10.6 Severability If any provision hereof is invalid and unenforceable in any jurisdiction, then, to the fullest extent permitted by law, (i) the other provisions hereof shall remain in full force and effect in such jurisdiction and shall be construed in order to carry out the intentions of the parties hereto as nearly as may be possible and (ii) the invalidity or unenforceability of any provision hereof in any jurisdiction shall not affect the validity or enforceability of such provision in any other jurisdiction. SECTION 10.7 Expenses, etc. The Company agrees to reimburse the Collateral Agent and the Custodial Agent for: (a) all reasonable out-of-pocket costs and expenses of the Collateral Agent and the Custodial Agent (including, without limitation, the reasonable fees and expenses of counsel to the Collateral Agent and the Custodial Agent), in connection with (i) the negotiation, preparation, execution and delivery or performance of this Agreement and (ii) any modification, supplement or waiver of any of the terms of this Agreement; (b) all reasonable costs and expenses of the Collateral Agent (including, without limitation, reasonable fees and expenses of counsel) in connection with (i) any enforcement or proceedings resulting or incurred in connection with causing any Holder of Securities to satisfy its obligations under the Purchase Contracts forming a part of the Securities and (ii) the 29

33 enforcement of this Section 10.7; and (c) all transfer, stamp, documentary or other similar taxes, assessments or charges levied by any governmental or revenue authority in respect of this Agreement or any other document referred to herein and all costs, expenses, taxes, assessments and other charges incurred in connection with any filing, registration, recording or perfection of any security interest contemplated hereby. SECTION 10.8 Security Interest Absolute All rights of the Collateral Agent and security interests hereunder, and all obligations of the Holders from time to time hereunder, shall be absolute and unconditional irrespective of: (a) any lack of validity or enforceability of any provision of the Purchase Contracts or the Securities or any other agreement or instrument relating thereto; (b) any change in the time, manner or place of payment of, or any other term of, or any increase in the amount of, all or any of the obligations of Holders of Securities under the related Purchase Contracts, or any other amendment or waiver of any term of, or any consent to any departure from any requirement of, the Purchase Contract Agreement or any Purchase Contract or any other agreement or instrument relating thereto; or (c) any other circumstance which might otherwise constitute a defense available to, or discharge of, a borrower, a guarantor or a pledgor. 30

34 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed as of the day and year first above written. NRG ENERGY, INC. By: ____________________________________ Name: Title: Address for Notices: NRG Energy, Inc. 901 Marquette Avenue Suite 2300 Minneapolis, Minnesota 55402-3265 Attention: Chief Financial Officer Telephone: (612) 373-5300 ______________________________________, as Purchase Contract Agent and as attorney-in-fact of the Holders from time to time of the Securities By: ____________________________________ Name: Title: Address for Notices: [______________________ _______________________ _______________________ New York, NY _________] Attention: ______________ Telecopy: ______________ 31

35 [__________________________], as Collateral Agent, Custodial Agent and as Securities Intermediary By:__________________ Name: Title: Address for Notices: [_______________________ ________________________ ________________________] Attention: [Corporate Trust Administration] Telecopy: _______________ 32

36 EXHIBIT A INSTRUCTION FROM PURCHASE CONTRACT AGENT TO COLLATERAL AGENT [Collateral Agent] Re: NRG Energy, Inc. (the "Company") We hereby notify you in accordance with Section [4.1] [4.2] of the Pledge Agreement, dated as of ___, 2001, (the "Pledge Agreement") among the Company, yourselves, as Collateral Agent, Custodial Agent and Securities Intermediary and ourselves, as Purchase Contract Agent and as attorney-in-fact for the holders of [CORPORATE UNITS] [TREASURY UNITS] from time to time, that the holder of the Securities listed below (the "Holder") has elected to substitute $_____ [aggregate principal amount of Treasury Securities] [aggregate principal amount of Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be,] in exchange for an equal Value of [Pledged Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be,] [Pledged Treasury Securities] held by you in accordance with the Pledge Agreement and has delivered to us a notice stating that the Holder has Transferred [Treasury Securities] [Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be,] to you, as Collateral Agent. We hereby instruct you, upon receipt of such [Pledged Treasury Securities] [Pledged Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be,], and upon the payment by such Holder of any applicable fees, to release the [Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be,] [Treasury Securities] related to such [Corporate Units] [Treasury Units] to us in accordance with the Holder's instructions. Capitalized terms used herein but not defined shall have the meaning set forth in the Pledge Agreement. Date:_____________ [Purchase Contract Agent] By:_________________________________ Name: Title: Signature Guarantee:________________ 33

37 Please print name and address of Registered Holder electing to substitute [Treasury Securities] [Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be,] for the [Pledged Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be,] [Pledged Treasury Securities]: ___________________________ __________________________________ Name Social Security or other Taxpayer Identification Number, if any ___________________________ Address ___________________________ ___________________________ 34

38 EXHIBIT B INSTRUCTION TO PURCHASE CONTRACT AGENT [Purchase Contract Agent] Re: Equity Units of NRG Energy, Inc. (the "Company") The undersigned Holder hereby notifies you that it has delivered to [The Chase Manhattan Bank], as Collateral Agent, [$_______ aggregate principal amount of Treasury Securities] [$_____aggregate principal amount of Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, the case may be,] in exchange for an equal Value of [Pledged Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio, as the case may be,] [Pledged Treasury Securities] held by the Collateral Agent, in accordance with Section [4.1][4.2] of the Pledge Agreement, dated ______, 2001 (the "Pledge Agreement"), between you, the Company and the Collateral Agent. The undersigned Holder has paid the Collateral Agent all applicable fees relating to such exchange. The undersigned Holder hereby instructs you to instruct the Collateral Agent to release to you on behalf of the undersigned Holder the [Pledged Debentures or the appropriate Applicable Ownership Interest of the Treasury Portfolio] [Pledged Treasury Securities] related to such [Corporate Units] [Treasury Units]. Capitalized terms used herein but not defined shall have the meaning set forth in the Pledge Agreement. Dated:_____________ _________________________ Signature Signature Guarantee:________________________ 35

39 Please print name and address of Registered Holder: _________________________ ___________________________ Name Social Security or other Taxpayer Identification _________________________ Number, if any Address _________________________ _________________________ _________________________ 36

40 EXHIBIT C INSTRUCTION TO CUSTODIAL AGENT REGARDING REMARKETING [Custodial Agent] Re: Debentures of NRG Energy, Inc. (the "Company") The undersigned hereby notifies you in accordance with Section 4.6(c) of the Pledge Agreement, dated as of ______________, 2001 (the "Pledge Agreement"), among the Company, yourselves, as Collateral Agent, Securities Intermediary and Custodial Agent, and _______________, as Purchase Contract Agent and as attorney-in-fact for the Holders of Corporate Units and Treasury Units from time to time, that the undersigned elects to deliver $ aggregate principal amount of Debentures for delivery to the Remarketing Agent on the Business Day immediately preceding the [Initial Remarketing Date] [Secondary Remarketing Date] for remarketing pursuant to Section 4.6(c) of the Pledge Agreement. The undersigned will, upon request of the Remarketing Agent, execute and deliver any additional documents deemed by the Remarketing Agent or by the Company to be necessary or desirable to complete the sale, assignment and transfer of the Debentures tendered hereby. The undersigned hereby instructs you, upon receipt of the Proceeds of such remarketing from the Remarketing Agent to deliver such Proceeds to the undersigned in accordance with the instructions indicated herein under "A. Payment Instructions". The undersigned hereby instructs you, in the event of Failed [Initial] [Secondary] Remarketing, upon receipt of the Debentures tendered herewith from the Remarketing Agent, to be delivered to the person(s) and the address(es) indicated herein under "B. Delivery Instructions." With this notice, the undersigned hereby (i) represents and warrants that the undersigned has full power and authority to tender, sell, assign and transfer the Debentures tendered hereby and that the undersigned is the record owner of any Debentures tendered herewith in physical form or a participant in The Depositary Trust Company ("DTC") and the beneficial owner of any Debentures tendered herewith by book-entry transfer to your account at DTC and (ii) agrees to be bound by the terms and conditions of Section 4.6(c) of the Pledge Agreement. Capitalized terms used herein but not defined shall have the meaning set forth in the Pledge Agreement. 37

41 Date:_____________ ____________________________________ By:_________________________________ Name: Title: Signature Guarantee:________________ Please print name and address: _________________________ ___________________________ Name Social Security or other Taxpayer Identification _________________________ Number, if any Address _________________________ _________________________ _________________________ 38

42 - -------------------------------------------------------------------------------- A. PAYMENT INSTRUCTIONS - -------------------------------------------------------------------------------- Proceeds of the remarketing should be paid by check in the name of the person(s) set forth below and mailed to the address set forth below. - -------------------------------------------------------------------------------- Name(s) - -------------------------------------------------------------------------------- (Please Print) Address (Please Print) - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- (Zip Code) - -------------------------------------------------------------------------------- (Tax Identification or Social Security Number) - -------------------------------------------------------------------------------- B. DELIVERY INSTRUCTIONS - -------------------------------------------------------------------------------- In the event of a failed remarketing, Debentures which are in physical form should be delivered to the person(s) set forth below and mailed to the address set forth below. Name(s) - -------------------------------------------------------------------------------- (Please Print) Address (Please Print) - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- (Zip Code) - -------------------------------------------------------------------------------- (Tax Identification or Social Security Number) In the event of a failed remarketing, Debentures which are in book-entry form should be credited to the account at The Depositary Trust Company set forth below. ------------------ DTC Account Number Name of Account Party: --------------------------------- 39

43 EXHIBIT D INSTRUCTION TO CUSTODIAL AGENT REGARDING WITHDRAWAL FROM REMARKETING [Custodial Agent] Re: Debentures of NRG Energy, Inc. (the "Company") The undersigned hereby notifies you in accordance with Section 4.6(c) of the Pledge Agreement, dated as of __, 2001 (the "Pledge Agreement") among the Company, yourselves, as Collateral Agent, Securities Intermediary and Custodial Agent and [_____________________], as Purchase Contract Agent and as attorney-in-fact for the Holders of Corporate Units and Treasury Units from time to time, that the undersigned elects to withdraw the $_____ aggregate principal amount of Debentures delivered to the Custodial Agent on ___, 2001 for remarketing pursuant to Section 4.6(c) of the Pledge Agreement. The undersigned hereby instructs you to return such Debentures to the undersigned in accordance with the undersigned's instructions. With this notice, the Undersigned hereby agrees to be bound by the terms and conditions of Section 4.6(c) of the Pledge Agreement. Capitalized terms used herein but not defined shall have the meaning set forth in the Pledge Agreement. Date:_____________ ____________________________________ By: _________________________________ Name: Title: Signature Guarantee:________________ 40

44 Please print name and address: _________________________ ___________________________ Name Social Security or other Taxpayer Identification _________________________ Number, if any Address _________________________ _________________________ _________________________ 41

1 EXHIBIT 4.6 REMARKETING AGREEMENT REMARKETING AGREEMENT, dated as of __________, 2001 (the "Agreement") by and between NRG Energy, Inc., a Delaware corporation (the "Company"), _________________, a ___________ banking corporation, not individually but solely as Purchase Contract Agent (the "Purchase Contract Agent") and as attorney-in-fact of the holders of Purchase Contracts (as defined in the Purchase Contract Agreement (as defined herein)), and Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated (the "Remarketing Agent"). WITNESSETH: WHEREAS, the Company will issue $200,000,000 (or $230,000,000 if the Underwriters' overallotment option is exercised in full) aggregate Stated Amount of its Equity Units (the "Equity Units") under the Purchase Contract Agreement, dated as of _____________, 2001, by and between the Purchase Contract Agent and the Company (the "Purchase Contract Agreement"); and WHEREAS, the Equity Units will initially consist of 8,000,000 (or 9,200,000 if the underwriters' overallotment option is exercised in full) units referred to as "Corporate Units." WHEREAS, the Company will issue concurrently in connection with the issuance of the Equity Units $200,000,000 (or $230,000,000 if the Underwriters' overallotment option is exercised in full) aggregate principal amount of ___% Senior Debentures due ____________, 2006 (the "Debentures") of the Company; and WHEREAS, the Debentures forming a part of the Corporate Units will be pledged pursuant to the Pledge Agreement (the "Pledge Agreement"), dated as of ____________, 2001, by and among the Company, _________________, as collateral agent (the "Collateral Agent") and the Purchase Contract Agent, to secure a Corporate Units holder's obligations under the related Purchase Contract on the Purchase Contract Settlement Date; and WHEREAS, the Debentures of the Debenture holders electing to have their Debentures remarketed and of the Corporate Unit holders will be remarketed by the Remarketing Agent on the third Business Day immediately preceding __________, 2003 (the "Initial Remarketing Date"); and

2 WHEREAS, in the event of a Failed Initial Remarketing, the Debentures of the Debenture holders electing to have their Debentures remarketed and of the Corporate Unit holders who have elected not to settle the Purchase Contracts related to their Corporate Units by Cash Settlement and who have not early settled their Purchase Contracts will be remarketed by the Remarketing Agent on the third Business Day immediately preceding the Purchase Contract Settlement Date; and WHEREAS, in the event of a Successful Initial Remarketing, the applicable interest rate on the Debentures will be reset on the Initial Remarketing Date, to the Reset Rate to be determined by the Reset Agent as the rate that such Debentures should bear in order for the Applicable Principal Amount of the Debentures to have an approximate aggregate market value of 100.5% of the Treasury Portfolio Purchase Price on the Initial Remarketing Date, provided that in the determination of such Reset Rate, the Company shall, if applicable, limit the Reset Rate to the maximum rate permitted by applicable law; and WHEREAS, in the event of a Failed Initial Remarketing, the applicable interest rate on the Debentures that remain outstanding on and after the Purchase Contract Settlement Date will be reset on the third Business Day immediately preceding the Purchase Contract Settlement Date, to the Reset Rate to be determined by the Reset Agent as the rate that such Debentures should bear in order to have an approximate market value of 100.5% of the aggregate principal amount of the Debentures on the third Business Day immediately preceding the Purchase Contract Settlement Date, provided that in the determination of such Reset Rate, the Company shall, if applicable, limit the Reset Rate to the maximum rate permitted by applicable law; and WHEREAS, the Company has requested Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated ("Merrill Lynch") to act as the Reset Agent and as the Remarketing Agent, and as such to perform the services described herein; and WHEREAS, Merrill Lynch is willing to act as Reset Agent and Remarketing Agent and as such to perform such duties on the terms and conditions expressly set forth herein; NOW, THEREFORE, for and in consideration of the covenants herein made, and subject to the conditions herein set forth, the parties hereto agree as follows: 2

3 Section 1. Definitions. Capitalized terms used and not defined in this Agreement, in the recitals hereto or in the paragraph preceding such recitals shall have the meanings assigned to them in the Purchase Contract Agreement or, if not therein defined, the Pledge Agreement. Section 2. Appointment and Obligations of Remarketing Agent. (a) The Company hereby appoints Merrill Lynch and Merrill Lynch hereby accepts such appointment, (i) as the Reset Agent to determine in consultation with the Company, in the manner provided for herein and in the Indenture (as in effect on the date of this Remarketing Agreement) with respect to the Debentures, (1) the Reset Rate that, in the opinion of the Reset Agent, will, when applied to the Debentures, enable the Applicable Principal Amount of the Debentures to have an approximate aggregate market value of 100.5% of the Treasury Portfolio Purchase Price as of the Initial Remarketing Date, and (2) in the event of a Failed Initial Remarketing, the Reset Rate that, in the opinion of the Reset Agent, will, when applied to the Debentures, enable a Debenture to have an approximate market value of 100.5% of its principal amount as of the third Business Day preceding the Purchase Contract Settlement Date, provided, in each case, that the Company, by notice to the Reset Agent prior to the tenth Business Day preceding _____, 2003, in the case of the Initial Remarketing (as defined below), or the Purchase Contract Settlement Date, in the case of the Secondary Remarketing (as defined below), shall, if applicable, limit the Reset Rate so that it does not exceed the maximum rate permitted by applicable law) and (ii) as the exclusive Remarketing Agent (subject to the right of Merrill Lynch to appoint additional remarketing agents hereunder as described below) to (1) remarket the Debentures of the Debenture holders electing to have their Debentures remarketed and of the Corporate Units holders on the Initial Remarketing Date, for settlement on ____________, 2003 and (2) in the case of a Failed Initial Remarketing, remarket the Debentures of the Debenture holders electing to have their Debentures remarketed or of the Corporate Units holders who have not early settled the related Purchase Contracts and have failed to notify the Purchase Contract Agent, on or prior to the fifth Business Day immediately preceding the Purchase Contract Settlement Date, of their intention to settle the related Purchase Contracts through Cash Settlement. In connection with the remarketing contemplated hereby, the Remarketing Agent will enter into a Supplemental Remarketing Agreement (the "Supplemental Remarketing Agreement") with the Company and the Purchase Contract Agent, which shall either be (i) substantially in the form attached hereto as Exhibit A (with such changes as the Company and the Remarketing Agent may agree upon, it being understood that changes may be necessary in the representations, warranties, covenants and other 3

4 provisions of the Supplemental Remarketing Agreement due to changes in law or facts and circumstances or in the event that Merrill Lynch is not the sole remarketing agent, and with such further changes therein as the Remarketing Agent may reasonably request, or (ii) in such other form as the Remarketing Agent may reasonably request, subject to the approval of the Company (such approval not to be unreasonably withheld). Anything herein to the contrary notwithstanding, Merrill Lynch shall not be obligated to act as Remarketing Agent or Reset Agent hereunder unless the Supplemental Remarketing Agreement is in form and substance reasonably satisfactory to Merrill Lynch. The Company agrees that Merrill Lynch shall have the right, on 15 Business Days notice to the Company, to appoint one or more additional remarketing agents so long as any such additional remarketing agents shall be reasonably acceptable to the Company. Upon any such appointment, the parties shall enter into an appropriate amendment to this Agreement to reflect the addition of any such remarketing agent. (b) Pursuant to the Supplemental Remarketing Agreement, the Remarketing Agent, either as sole remarketing agent or as representative of a group of remarketing agents appointed as aforesaid, will agree, subject to the terms and conditions set forth herein and therein, to use its reasonable efforts to (i) remarket, on the Initial Remarketing Date, the Debentures that the Trustee (as such term is defined in the Indenture) shall have notified the Remarketing Agent have been tendered for, or otherwise are to be included in, the Initial Remarketing, at a price per Debenture such that the aggregate price for the Applicable Principal Amount of the Debentures is approximately 100.5% of the Treasury Portfolio Purchase Price and (ii) in the event of a Failed Initial Remarketing, remarket, on the third Business Day immediately preceding the Purchase Contract Settlement Date, the Debentures that the Trustee shall have notified the Remarketing Agent have been tendered for, or otherwise are to be included in, the Secondary Remarketing, at a price of approximately 100.5% of the aggregate principal amount of such Debentures. Notwithstanding the preceding sentence, the Remarketing Agent shall not remarket any Debentures for a price less than the price (the "Minimum Initial Remarketing Price") necessary for the Applicable Principal Amount of the Debentures to have an aggregate price equal to 100% of the Treasury Portfolio Purchase Price, in the case of the Initial Remarketing, or the aggregate principal amount of such Debentures, in the case of the Secondary Remarketing. After deducting the fee specified in Section 3 below, the proceeds of such Initial Remarketing or Secondary Remarketing, as the case may be, shall be paid to the Collateral Agent in accordance with Section 4.6 or 6.3 of the Pledge Agreement and Section 5.3 or 5.4 of the Purchase Contract Agreement (each of which Sections are incorporated herein by reference). The right of each holder of Debentures or Corporate Units to have Debentures tendered for the 4

5 Initial Remarketing or the Secondary Remarketing, as the case may be, shall be limited to the extent that (i) the Remarketing Agent conducts an Initial Remarketing and, in the event of a Failed Initial Remarketing, a Secondary Remarketing pursuant to the terms of this Agreement, (ii) Debentures tendered have not been called for redemption, (iii) the Remarketing Agent is able to find a purchaser or purchasers for tendered Debentures at a price of not less than the Minimum Initial Remarketing Price, in the case of the Initial Remarketing, and 100% of the principal amount thereof, in the case of the Secondary Remarketing and (iv) such purchaser or purchasers deliver the purchase price therefor to the Remarketing Agent as and when required. (c) It is understood and agreed that neither the Remarketing Agent nor the Reset Agent shall have any obligation whatsoever to purchase any Debentures, whether in the Initial Remarketing, Secondary Remarketing or otherwise, and shall in no way be obligated to provide funds to make payment upon tender of Debentures for remarketing or to otherwise expend or risk their own funds or incur or be exposed to financial liability in the performance of their respective duties under this Agreement or the Supplemental Remarketing Agreement, and, without limitation of the foregoing, the Remarketing Agent shall not be deemed an underwriter of the remarketed Debentures. The Company shall not be obligated in any case to provide funds to make payment upon tender of Debentures for remarketing. Section 3. Fees. In the event of a Successful Initial Remarketing, the Remarketing Agent shall retain as a remarketing fee (the "Remarketing Fee") an amount not exceeding 25 basis points (0.25%) of the Minimum Initial Remarketing Price from any amount received in connection with such Initial Remarketing in excess of the Minimum Initial Remarketing Price. In the event of a Successful Secondary Remarketing, the Remarketing Agent shall retain as the Remarketing Fee an amount not exceeding 25 basis points (0.25%), of the principal amount of the remarketed Debentures from any amount received in connection with such Secondary Remarketing in excess of the aggregate principal amount of such remarketed Debentures. In addition, the Reset Agent shall, in either case, receive from the Company a reasonable and customary fee (the "Reset Agent Fee"); provided, however, that if the Remarketing Agent shall also act as the Reset Agent, then the Reset Agent shall not be entitled to receive any such Reset Agent Fee. Payment of such Reset Agent Fee shall be made by the Company on the Initial Remarketing Date, in the case of a Successful Initial Remarketing, or on the third Business Day immediately preceding the Purchase Contract Settlement Date, in the case of a Successful Secondary Remarketing, in immediately available funds or, upon the 5

6 instructions of the Reset Agent, by certified or official bank check or checks or by wire transfer. Section 4. Replacement and Resignation of Remarketing Agent. (a) The Company may in its absolute discretion replace Merrill Lynch as the Remarketing Agent and as the Reset Agent hereunder by giving notice prior to 3:00 p.m., New York City time (i) on the eleventh Business Day immediately prior to _______________, 2003, or (ii) in the event of a Failed Initial Remarketing, prior to 3:00 p.m., New York City time on the eleventh Business Day immediately prior to the Purchase Contract Settlement Date, provided, in either case, that the Company must replace Merrill Lynch both as Remarketing Agent and as Reset Agent unless Merrill Lynch shall otherwise agree. Any such replacement shall become effective upon the Company's appointment of a successor to perform the services that would otherwise be performed hereunder by the Remarketing Agent and the Reset Agent. Upon providing such notice, the Company shall use all reasonable efforts to appoint such a successor and to enter into a remarketing agreement with such successor as soon as reasonably practicable. (b) Merrill Lynch may resign at any time and be discharged from its duties and obligations hereunder as the Remarketing Agent and/or as the Reset Agent by giving notice prior to 3:00 p.m., New York City time (i) on the eleventh Business Day immediately prior to _______________, 2003, or (ii) in the event of a Failed Initial Remarketing, on the eleventh Business Day immediately prior to the Purchase Contract Settlement Date. Any such resignation shall become effective upon the Company's appointment of a successor to perform the services that would otherwise be performed hereunder by the Remarketing Agent and/or the Reset Agent. Upon receiving notice from the Remarketing Agent and/or the Reset Agent that it wishes to resign hereunder, the Company shall appoint such a successor and enter into a remarketing agreement with it as soon as reasonably practicable. Section 5. Dealing in the Securities. Each of the Remarketing Agent and the Reset Agent, when acting hereunder or, in the case of the Remarketing Agent, under the Supplemental Remarketing Agreement, or when acting in its individual or any other capacity, may, to the extent permitted by law, buy, sell, hold or deal in any of the Debentures, Treasury Units, Corporate Units or any other securities of the Company. With respect to any Debentures, Treasury Units, Corporate Units or any other securities of the Company owned by it, each of the Remarketing Agent and the Reset Agent may exercise any vote or join in any action with like effect as if it did not act in any capacity hereunder. Each of the Remarketing Agent and the Reset Agent, in its individual capacity, either as principal 6

7 or agent, may also engage in or have an interest in any financial or other transaction with the Company as freely as if it did not act in any capacity hereunder. Section 6. Registration Statement and Prospectus. In connection with the Initial Remarketing, if and to the extent required in the view of counsel (which need not be an opinion) for either the Remarketing Agent or the Company by applicable law, regulations or interpretations in effect at the time of such Initial Remarketing, the Company (i) shall use its reasonable efforts to have a registration statement relating to the Debentures effective under the Securities Act of 1933 prior to the third Business Day immediately preceding _____________, 2003, (ii) if requested by the Remarketing Agent shall furnish a current preliminary prospectus and, if applicable, a current preliminary prospectus supplement to be used by the Remarketing Agent in the Initial Remarketing not later than seven Business Days prior to ____________, 2003 (or such earlier date as the Remarketing Agent may reasonably request) and in such quantities as the Remarketing Agent may reasonably request, and (iii) shall furnish a current final prospectus and, if applicable, a final prospectus supplement to be used by the Remarketing Agent in the Initial Remarketing not later than the third Business Day immediately preceding ____________, 2003 in such quantities as the Remarketing Agent may reasonably request, and shall pay all expenses relating thereto. In the event of a Failed Initial Remarketing and in connection with the Secondary Remarketing, if and to the extent required in the view of counsel (which need not be an opinion) for either the Remarketing Agent or the Company by applicable law, regulations or interpretations in effect at the time of such Secondary Remarketing, the Company (i) shall use its reasonable efforts to have a registration statement relating to the Debentures effective under the Securities Act of 1933 prior to the third Business Day immediately preceding the Purchase Contract Settlement Date, (ii) if requested by the Remarketing Agent, shall furnish a current preliminary prospectus and, if applicable, a current preliminary prospectus supplement to be used by the Remarketing Agent in the Secondary Remarketing not later than seven Business Days prior to the Purchase Contract Settlement Date (or such earlier date as the Remarketing Agent may reasonably request) and in such quantities as the Remarketing Agent may reasonably request, and (iii) shall furnish a current final prospectus and, if applicable, a final prospectus supplement to be used by the Remarketing Agent in the Secondary Remarketing not later than the third Business Day immediately preceding the Purchase Contract Settlement Date in such quantities as the Remarketing Agent may reasonably request, and shall pay all expenses relating thereto. The Company shall also take all such actions as may (upon advice of counsel to the Company or the Remarketing Agent) be necessary or desirable under state securities or blue sky laws in connection with the Initial Remarketing and the Secondary Remarketing. 7

8 Section 7. Conditions to the Remarketing Agent's Obligations. (a) The obligations of the Remarketing Agent and the Reset Agent under this Agreement and, in the case of the Remarketing Agent, the Supplemental Remarketing Agreement shall be subject to the terms and conditions of this Agreement and the Supplemental Remarketing Agreement, including, without limitation, the following conditions: (i) the Debentures tendered for, or otherwise to be included in the Initial Remarketing or Secondary Remarketing, as the case may be, have not been called for redemption, (ii) the Remarketing Agent is able to find a purchaser or purchasers for tendered Debentures (1) in the case of the Initial Remarketing, at a price not less than Minimum Initial Remarketing Price, and (2) in the case of the Secondary Remarketing, at a price not less than 100% of the principal amount thereof, (iii) the Purchase Contract Agent, the Collateral Agent, the Custodial Agent, the Company and the Trustee shall have performed their respective obligations in connection with the Initial Remarketing and, in the event of a Failed Initial Remarketing, in connection with the Secondary Remarketing, in each case pursuant to the Purchase Contract Agreement, the Pledge Agreement, the Indenture, this Agreement and the Supplemental Remarketing Agreement (including, without limitation, giving the Remarketing Agent notice of the Treasury Portfolio Purchase Price no later than 10:00 a.m., New York City time, on the fourth Business Day prior to ____________, 2003, in the case of the Initial Remarketing, and giving the Remarketing Agent notice of the aggregate principal amount, as the case may be, of Debentures to be remarketed, no later than 10:00 a.m., New York City time, on the fourth Business Day prior to the Purchase Contract Settlement Date, in the case of the Secondary Remarketing, and, in each case, concurrently delivering the Debentures to be remarketed to the Remarketing Agent), (iv) no Event of Default (as defined in the Indenture) shall have occurred and be continuing, (v) the accuracy of the representations and warranties of the Company included and incorporated by reference in this Agreement and the Supplemental Remarketing Agreement or in certificates of any officer of the Company or any of its subsidiaries delivered pursuant to the provisions included or incorporated by reference in this Agreement or the Supplemental Remarketing Agreement, (vi) the performance by the Company of its covenants and other obligations included and incorporated by reference in this Agreement and the Supplemental Remarketing Agreement, and (vii) the satisfaction of the other conditions set forth and incorporated by reference in this Agreement and the Supplemental Remarketing Agreement. (b) If at any time during the term of this Agreement, any Indenture Event of Default or event that with the passage of time or the giving of notice or both would become an Indenture Event of Default has occurred and is continuing under the Indenture, then the obligations and duties of the Remarketing Agent and the 8

9 Reset Agent under this Agreement and the Supplemental Remarketing Agreement shall be suspended until such default or event has been cured. The Company will promptly give the Remarketing Agent notice of all such defaults and events of which the Company is aware. Section 8. Termination of Remarketing Agreement. This Agreement shall terminate as to any Remarketing Agent or Reset Agent which is replaced on the effective date of its replacement pursuant to Section 4(a) hereof or pursuant to Section 4(b) hereof. Notwithstanding any such termination, the obligations set forth in Section 3 hereof shall survive and remain in full force and effect until all amounts payable under said Section 3 shall have been paid in full. In addition, each former Remarketing Agent and Reset Agent shall be entitled to the rights and benefits under Section 10 of this Agreement notwithstanding the replacement or resignation of such Remarketing Agent or Reset Agent. Section 9. Remarketing Agent's Performance; Duty of Care. The duties and obligations of the Remarketing Agent and the Reset Agent shall be determined solely by the express provisions of this Agreement and, in the case of the Remarketing Agent, the Supplemental Remarketing Agreement. No implied covenants or obligations of or against the Remarketing Agent or the Reset Agent shall be read into this Agreement or the Supplemental Remarketing Agreement. In the absence of bad faith on the part of the Remarketing Agent or the Reset Agent, as the case may be, the Remarketing Agent and the Reset Agent each may conclusively rely upon any document furnished to it which purports to conform to the requirements of this Agreement or the Supplemental Remarketing Agreement, as the case may be, as to the truth of the statements expressed therein. Each of the Remarketing Agent and the Reset Agent shall be protected in acting upon any document or communication reasonably believed by it to be signed, presented or made by the proper party or parties. Neither the Remarketing Agent nor the Reset Agent shall have any obligation to determine whether there is any limitation under applicable law on the Reset Rate on the Debentures or, if there is any such limitation, the maximum permissible Reset Rate on the Debentures, and they shall rely solely upon written notice from the Company (which the Company agrees to provide prior to the tenth Business Day before __________, 2003, in the case of the Initial Remarketing, and prior to the tenth Business Day before Purchase Contract Settlement Date, in the case of the Secondary Remarketing) as to whether or not there is any such limitation and, if so, the maximum permissible Reset Rate. Neither the Remarketing Agent nor the Reset Agent shall incur any liability under this Agreement or the Supplemental Remarketing Agreement to any beneficial owner or holder of Debentures, or other securities, either in its individual capacity or as 9

10 Remarketing Agent or Reset Agent, as the case may be, for any action or failure to act in connection with the Remarketing or otherwise in connection with the transactions contemplated by this Agreement or the Supplemental Remarketing Agreement. The provisions of this Section 9 shall survive any termination of this Agreement and shall also continue to apply to every Remarketing Agent and Reset Agent notwithstanding their resignation or removal. Section 10. Indemnification and Contribution. (a) The Company agrees to indemnify and hold harmless the Remarketing Agent, the Reset Agent and their respective directors, officers, employees, agents, affiliates and each person, if any, who controls the Remarketing Agent or the Reset Agent within the meaning of either Section 15 of the Securities Act of 1933, as amended (the "1933 Act"), or Section 20 of the Securities Exchange Act of 1934, as amended (the "1934 Act") (the Remarketing Agent, the Reset Agent and each such person or entity being an "Indemnified Party"), as follows: (i) from and against any and all losses, claims, damages, liabilities and expenses whatsoever, joint or several, as incurred, to which such Indemnified Party may become subject under any applicable federal or state law, or otherwise, and related to, arising out of, or based on (A) the failure to have an effective Registration Statement (as defined in the Supplemental Remarketing Agreement) under the 1933 Act relating to the Debentures, as the case may be, if required, or the failure to satisfy the prospectus delivery requirements of the 1933 Act because the Company failed to provide the Remarketing Agent with a Prospectus (as defined in the Supplemental Remarketing Agreement) for delivery, or (B) any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement or any amendment thereto (including any information deemed to be a part of the Registration Statement at the time it became effective pursuant to paragraph (b) of Rule 430A under the 1933 Act, if applicable), or the omission or alleged omission therefrom of a material fact required to be stated therein or necessary to make the statements therein not misleading, or (C) any untrue statement or alleged untrue statement of a material fact contained in any preliminary prospectus or the Prospectus, or any amendment or supplement thereto, or the omission or alleged omission therefrom of a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading, or (D) any untrue statement or alleged untrue statement of a material fact contained in any other information (whether oral or written) or documents (including, without limitation, any documents incorporated or deemed to be incorporated by reference in any such information or documents) provided by the Company for use in connection with the remarketing of the Debentures or any of the transactions related 10

11 thereto, or (E) any breach by the Company of any of the representations, warranties or agreements included or incorporated by reference in this Agreement or the Supplemental Remarketing Agreement, or (F) any failure by the Company to make or consummate the remarketing of the Debentures (including, without limitation, any Failed Initial Remarketing or Failed Secondary Remarketing) or the withdrawal, recession, termination, amendment or extension of the terms of such remarketing, or (G) any failure on the part of the Company to comply, or any breach by the Company of, any of the provisions included or incorporated by reference in this Agreement, the Supplemental Remarketing Agreement, the Purchase Contract Agreement, the Corporate Units, the Treasury Units, the Pledge Agreement, the Indenture or the Debentures (collectively, the "Operative Documents") or (H) the remarketing of the Debentures, as the case may be, or any other transaction contemplated by any of the Operative Documents, or the engagement of the Remarketing Agent or the Reset Agent pursuant to, or the performance by the Remarketing Agent or the Reset Agent of the respective services contemplated by, this Agreement or the Supplemental Remarketing Agreement, whether or not the Initial Remarketing or the Secondary Remarketing or the reset of the interest rate on the Debentures as contemplated herein actually occur; (ii) against any and all loss, liability, claim, damage and expense whatsoever, as incurred, to the extent of the aggregate amount paid in settlement of any litigation or any investigation or proceeding by any governmental agency or body, commenced or threatened, or of any claim whatsoever related to, arising out of or based on any matter described in (i) above; and (iii) against any and all expense whatsoever, as incurred (including the fees and disbursements of counsel chosen by Merrill Lynch), incurred in investigating, preparing or defending against any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever related to, arising out or based on any matter described in (i) above, whether or not such Indemnified Party is a party and whether or not such claim, action or proceeding is initiated or brought by or on behalf of the Company to the extent that any such expense is not paid under (i) or (ii) above; provided, however, that the Company shall not be liable under clause (i)(B), (i)(C) or (i)(D) to the extent any such loss, claim, damage, liability or expense arises out of any untrue statement or omission or alleged untrue statement or omission made in reliance upon and conformity with written information furnished to the Company by the Remarketing Agent or the Reset Agent expressly for use in the Registration Statement (or any amendment thereto) or any preliminary prospectus or the 11

12 Prospectus (or any amendment or supplement thereto) or any other documents used in connection with remarketing of the Debentures, as the case may be; provided, further, that with respect to any untrue statement or omission of a material fact made in any preliminary prospectus, the indemnity agreement contained in this Section 10(a) shall not inure to the benefit of the Remarketing Agent to the extent that any such loss, claim, damage or liability of the Remarketing Agent occurs under the circumstance where it shall have been determined by a court of competent jurisdiction by final and nonappealable judgment that (w) the Company had previously furnished copies of the Prospectus to Merrill Lynch, (x) delivery of the Prospectus was required to be made to such person, (y) the untrue statement or omission of a material fact contained in the preliminary prospectus was corrected in the Prospectus, and (z) there was not sent or given to such person, at or prior to the written confirmation of the sale of Securities to such person, a copy of the Prospectus. The Company agrees that no Indemnified Party shall have any liability (whether direct or indirect, in contract or tort or otherwise) to the Company or its respective security holders or creditors relating to or arising out of the engagement of the Remarketing Agent or the Reset Agent pursuant to, or the performance by the Remarketing Agent or the Reset Agent of their respective services contemplated by, this Agreement or the Supplemental Remarketing Agreement except to the extent that any loss, claim, damage, liability or expense is found in a final judgment by a court of competent jurisdiction to have resulted from the willful misconduct, gross negligence or bad faith of the Remarketing Agent or the Reset Agent, as the case may be. The Company agrees that, without Merrill Lynch's prior written consent, it will not settle, compromise or consent to the entry of any judgment with respect to any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any action or claim whatsoever in respect of which indemnification or contribution could be sought under this Section 10 (whether or not Merrill Lynch or any other Indemnified Party is an actual or potential party to such claim, action or proceeding), unless such settlement, compromise or consent (i) includes an unconditional release of each Indemnified Party from all liability arising out of such litigation, investigation, proceeding, action or claim and (ii) does not include a statement as to, or an admission of, fault, culpability or a failure to act by or on behalf of an Indemnified Party. 12

13 (b) If the indemnification provided for in Section 10(a) hereof is for any reason unavailable to or insufficient to hold harmless an Indemnified Party in respect of any losses, liabilities, claims, damages or expenses referred to therein, then the Company shall contribute to the aggregate amount of such losses, liabilities, claims, damages and expenses incurred by such Indemnified Party, as incurred, (i) in such proportion as is appropriate to reflect the relative benefits received by the Company on the one hand and the Remarketing Agent and the Reset Agent on the other hand from the remarketing of the Debentures contemplated hereby or (ii) if the allocation provided by clause (i) is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits referred to in clause (i) above but also the relative fault of the Company on the one hand and of the Remarketing Agent and the Reset Agent on the other hand in connection with the statements, omissions or other matters which resulted in such losses, liabilities, claims, damages or expenses, as well as any other relevant equitable considerations. The relative benefits received by the Company on the one hand and the Remarketing Agent and the Reset Agent on the other hand in connection with the remarketing of the Debentures contemplated hereby shall be deemed to be in the same respective proportions as the aggregate principal amount of the Debentures which are or are to be remarketed bears to the aggregate fees actually received by the Remarketing Agent and the Reset Agent under Section 3 hereof. The relative fault of the Company on the one hand and the Remarketing Agent and the Reset Agent on the other hand (i) in the case of an untrue or alleged untrue statement of a material fact or omission or alleged omission to state a material fact, shall be determined by reference to, among other things, whether such untrue or alleged untrue statement of a material fact or omission or alleged omission to state a material fact relates to information supplied by the Company on the one hand or by the Remarketing Agent or the Reset Agent on the other hand and the parties' relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission and (ii) in the case of any other action or omission shall be determined by reference to, among other things, whether such action or omission was taken or omitted to be taken by the Company on the one hand, or by the Remarketing Agent or the Reset Agent, on the other hand, and the parties' relative intent, knowledge, access to information and opportunity to prevent or correct such action or omission. The Company, the Remarketing Agent and the Reset Agent agree that it would not be just and equitable if contribution pursuant to this Section 10(b) were determined by pro rata allocation or by any other method of allocation which does not take account of the equitable considerations referred to above in this Section 10(b). The aggregate amount of losses, liabilities, claims, damages and expenses incurred by an Indemnified Party and referred to above in this Section 10(b) shall be deemed to include any legal or other expenses incurred by such Indemnified Party in 13

14 investigating, preparing or defending against any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever based upon any such untrue or alleged untrue statement or any such omission or alleged omission or any other such action or omission; provided, however, that to the extent permitted by applicable law, in no event shall the Remarketing Agent or the Reset Agent be required to contribute any amount which, in the aggregate, exceeds the aggregate fees received by them under Section 3 of this Agreement. No investigation or failure to investigate by any Indemnified Party shall impair the foregoing indemnification and contribution agreement or any rights an Indemnified Party may have. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the 1933 Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. (c) In the event an Indemnified Party is requested or required to appear as a witness in any action brought by or on behalf of or against the Company, the Company agrees to reimburse the Remarketing Agent or the Reset Agent, as the case may be, for all reasonable expenses, as incurred, which are incurred by the Remarketing Agent or the Reset Agent, as the case may be, in connection with such Indemnified Party's appearing and preparing to appear as such a witness, including, without limitation, the reasonable fees and disbursements of its legal counsel, and to compensate the Remarketing Agent or the Reset Agent, as the case may be, in an amount to be mutually agreed upon. In addition, the Company agrees to compensate the Remarketing Agent or the Reset Agent, as the case may be, in an amount to be mutually agreed upon per person per day for each day that an officer, director or employee of the Remarketing Agent or the Reset Agent, as the case may be, or any of their respective affiliates is involved in preparation, discovery or testimony pertaining to any litigation, discovery or investigation in connection with this Agreement or the Supplemental Remarketing Agreement. (d) Promptly after receipt by an Indemnified Party of written notice of any claim or commencement of an action or proceeding with respect to which indemnification may be sought hereunder, such Indemnified Party will notify the Company in writing of such claim or of the commencement of such action or proceeding, but failure so to notify the Company will not relieve the Company from any liability which it may have to such Indemnified Party under this indemnification and contribution agreement, and in any event will not relieve the Company from any other liability that it may have to such Indemnified Party. Merrill Lynch shall have the right to select counsel in connection with any transaction for which any Indemnified Party may be entitled to indemnification or contribution hereunder, provided that in no event shall the indemnifying parties be liable for fees and 14

15 expenses of more than one counsel (in addition to any local counsel) separate from their own counsel for all Indemnified Parties in connection with any one action or separate but similar or related actions in the same jurisdiction arising out of the same general allegations or circumstances. (e) Anything herein or in the Supplemental Remarketing Agreement to the contrary notwithstanding, the provisions of this Section 10, and the rights of the Remarketing Agent, the Reset Agent and the other Indemnified Parties hereunder, shall be in addition to, and not in limitation of, any rights or benefits (including, without limitation, rights to indemnification or contribution) which the Remarketing Agent, the Reset Agent or any other Indemnified Party may have under any other instrument or agreement. Section 11. Governing Law. This Agreement shall be governed by and construed in accordance with the laws of the State of New York without regard to principles of conflicts of laws. Section 12. Term of Agreement. (a) Unless otherwise terminated in accordance with the provisions hereof and except as otherwise provided herein, this Agreement shall remain in full force and effect from the date hereof until the first day thereafter on which no Debentures are outstanding, or, if earlier, the Business Day immediately following ___________, 2003, in the case of a Successful Initial Remarketing, or the Business Day immediately following the Purchase Contract Settlement Date, in the case of a Successful Secondary Remarketing. Anything herein to the contrary notwithstanding, the provisions of the last section of Section 8 hereof and the provisions of Sections 3, 9, 10 and 12(b) hereof shall survive any termination of this Agreement and remain in full force and effect. (b) All representations and warranties included or incorporated by reference in this Agreement, or the Supplemental Remarketing Agreement, or contained in certificates of officers of the Company submitted pursuant hereto or thereto, shall remain operative and in full force and effect, regardless of any investigation made by or on behalf of the Remarketing Agent, the Reset Agent or any of their controlling persons, or by or on behalf of the Company or the Purchase Contract Agent, and shall survive the remarketing of the Debentures. Section 13. Successors and Assigns. The rights and obligations of the Company and the Purchase Contract Agent (both in its capacity as Purchase Contract Agent and as attorney-in-fact) hereunder may not be assigned or delegated to any other person without the prior written consent of the Remarketing Agent and 15

16 the Reset Agent. The rights and obligations of the Remarketing Agent and the Reset Agent hereunder may not be assigned or delegated to any other person without the prior written consent of the Company, except that the Remarketing Agent shall have the right to appoint additional remarketing agents as provided herein. This Agreement shall inure to the benefit of and be binding upon the Company, the Purchase Contract Agent, the Remarketing Agent and the Reset Agent and their respective successors and assigns and the other Indemnified Parties (as defined in Section 10 hereof) and the successors, assigns, heirs and legal representatives of the Indemnified Parties. The terms "successors" and "assigns" shall not include any purchaser of Securities or Debentures merely because of such purchase. Section 14. Headings. Section headings have been inserted in this Agreement and the Supplemental Remarketing Agreement as a matter of convenience of reference only, and it is agreed that such section headings are not a part of this Agreement or the Supplemental Remarketing Agreement and will not be used in the interpretation of any provision of this Agreement or the Supplemental Remarketing Agreement. Section 15. Severability. If any provision of this Agreement or the Supplemental Remarketing Agreement shall be held or deemed to be or shall, in fact, be invalid, inoperative or unenforceable as applied in any particular case in any or all jurisdictions because it conflicts with any provisions of any constitution, statute, rule or public policy or for any other reason, then, to the extent permitted by law, such circumstances shall not have the effect of rendering the provision in question invalid, inoperative or unenforceable in any other case, circumstances or jurisdiction, or of rendering any other provision or provisions of this Agreement or the Supplemental Remarketing Agreement, as the case may be, invalid, inoperative or unenforceable to any extent whatsoever. Section 16. Counterparts. This Agreement and the Supplemental Remarketing Agreement may be executed in counterparts, each of which shall be regarded as an original and all of which shall constitute one and the same document. Section 17. Amendments. This Agreement and the Supplemental Remarketing Agreement may be amended by any instrument in writing signed by the parties hereto. The Company and the Purchase Contract Agent agree that they will not enter into, cause or permit any amendment or modification of the Purchase Contract Agreement, the Indenture, the Pledge Agreement, the Debentures, the Equity Units or any other instruments or agreements relating to the Debentures or the Equity Units which would in any way affect the rights, duties or obligations of the 16

17 Remarketing Agent or the Reset Agent without the prior written consent of the Remarketing Agent or the Reset Agent, as the case may be. Section 18. Notices. Unless otherwise specified, any notices, requests, consents or other communications given or made hereunder or pursuant hereto shall be made in writing or transmitted by any standard form of telecommunication, including telephone or telecopy, and confirmed in writing. All written notices and confirmations of notices by telecommunication shall be deemed to have been validly given or made when delivered or mailed, registered or certified mail, return receipt requested and postage prepaid. All such notices, requests, consents or other communications shall be addressed as follows: if to the Company, to NRG Energy, Inc., 901 Marquette Avenue, Suite 2300, Minneapolis, Minnesota, 55402, Attention: Chief Financial Officer; if to the Remarketing Agent or Reset Agent, to Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated, at World Financial Center, North Tower, New York, New York 10281, Attention: Phil Jones, with a copy to Skadden, Arps, Slate, Meagher & Flom LLP, Four Times Square, New York, New York 10036, Attention: John W. Osborn; and if to the Purchase Contract Agent, to _________________, ______________________________________________, or to such other address as any of the above shall specify to the other in writing. Section 19. Information. The Company agrees to furnish the Remarketing Agent and the Reset Agent with such information and documents as the Remarketing Agent or the Reset Agent may reasonably request in connection with the transactions contemplated by this Remarketing Agreement and the Supplemental Remarketing Agreement, and make reasonably available to the Remarketing Agent, the Reset Agent and any accountant, attorney or other advisor retained by the Remarketing Agent or the Reset Agent such information that parties would customarily require in connection with a due diligence investigation conducted in accordance with applicable securities laws and cause the Company's officers, directors, employees and accountants to participate in all such discussions and to supply all such information reasonably requested by any such person in connection with such investigation. 17

18 IN WITNESS WHEREOF, each of the Company, the Purchase Contract Agent and the Remarketing Agent has caused this Agreement to be executed in its name and on its behalf by one of its duly authorized signatories as of the date first above written. NRG ENERGY, INC. By: -------------------------------------- Name: Title: CONFIRMED AND ACCEPTED: MERRILL LYNCH & CO. MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED By: ------------------------------------ Authorized Signatory - ------------------------------------------------ not individually but solely as Purchase Contract Agent and as attorney-in-fact for the holders of the Purchase Contracts By: ------------------------------------ Name: Title:

19 Exhibit A to Remarketing Agreement Form of Supplemental Remarketing Agreement Supplemental Remarketing Agreement dated _____________, ____ among NRG Energy, Inc., a Delaware corporation (the "Company"), ___________________ (the "Remarketing Agent"), and _________________, as Purchase Contract Agent and attorney-in-fact for the Holders of the Purchase Contracts (as such terms are defined in the Purchase Contract Agreement referred to in Schedule I hereto) NOW, THEREFORE, for and in consideration of the covenants herein made, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows: 1. Definitions. Capitalized terms used and not defined in this Agreement shall have the meanings assigned to them in the Remarketing Agreement dated as of _______________, 2001 (the "Remarketing Agreement") among the Company, the Purchase Contract Agent and Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated or, if not defined in the Remarketing Agreement, the meanings assigned to them in the Purchase Contract Agreement (as defined in Schedule I hereto). 2. Registration Statement and Prospectus. The Company has filed with the Securities and Exchange Commission, and there has become effective, a registration statement on Form S-3, including a prospectus, relating to the Securities (as such term is defined on Schedule I hereto). Such Registration Statement, as amended, and including the information deemed to be a part thereof pursuant to Rule 430A under the Securities Act of 1933, as amended (the "1933 Act"), and the documents incorporated or deemed to be incorporated by reference therein, are hereinafter called, collectively, the "Registration Statement"; [the related preliminary prospectus dated ___________, including the documents incorporated or deemed to be incorporated by reference therein, [and preliminary prospectus supplemented dated __________] are hereinafter called, [collectively] the "preliminary prospectus";] and the related prospectus dated, including the documents incorporated or deemed to be incorporated by reference therein, [and prospectus

20 supplement dated ________] are hereinafter called, [collectively,] the "Prospectus." The Company has provided copies of the Registration Statement [, the preliminary prospectus] and the Prospectus to the Remarketing Agent, and hereby consents to the use of the [preliminary prospectus] and the Prospectus in connection with the remarketing of the Securities. [IN THE EVENT THAT A REGISTRATION STATEMENT IS NOT REQUIRED, INSERT THE FOLLOWING: The Company has provided to the Remarketing Agent, for use in connection with remarketing of the Securities (as such term is defined on Schedule I hereto), a [preliminary remarketing memorandum and] remarketing memorandum and [describe other materials, if any]. Such remarketing memorandum (including the documents incorporated or deemed to be incorporated by reference therein, [and] [describe other materials] are hereinafter called, collectively, the "Prospectus," [and such preliminary marketing memorandum (including the documents incorporated or deemed to be incorporated by reference therein) is hereinafter called a "preliminary prospectus")]. The Company hereby consents to the use of the Prospectus [and the preliminary prospectus] in connection with the remarketing of the Securities]. All references in this Agreement to amendments or supplements to the Registration Statement [, the preliminary prospectus] or the Prospectus shall be deemed to mean and include the filing of any document under the Securities Exchange Act of 1934, as amended (the "1934 Act"), which is incorporated or deemed to be incorporated by reference in the Registration Statement [, the preliminary prospectus] or the Prospectus, as the case may be. 3. Provisions Incorporated by Reference. (a) Subject to Section 3(b), the provisions of the Underwriting Agreement (other than Section 2, Section 3, Section 4, Section 7, Section 8 and Section 9 thereof) are incorporated herein by reference, mutatis mutandis, and the Company hereby makes the representations and warranties, and agrees to comply with the covenants and obligations, set forth in the provisions of the Units Underwriting Agreement incorporated by reference herein, as modified by the provisions of Section 3(b) hereof. (b) With respect to the provisions of the Underwriting Agreement incorporated herein, for the purposes hereof, (i) all references therein to the "Underwriter" or "Underwriters" shall be deemed to refer to the Remarketing Agent and all references to the "Representative" or the "Representatives" shall be deemed to refer to Merrill Lynch, Pierce, Fenner & Smith Incorporated, ("Merrill Lynch"); (ii) all references therein to the "Securities" or "Initial Securities" shall be deemed to refer to the Securities as defined herein; (iii) all references therein to the "Closing Date" shall be deemed to refer to the Remarketing Closing Date specified in A-2

21 Schedule I hereto; (iv) all references therein to the "Registration Statement" [, the "Preliminary Final Prospectus"] or the "Final Prospectus" shall be deemed to refer to the Registration Statement[, the preliminary prospectus] and the Prospectus, respectively, as defined herein; (v) all references therein to this "Agreement," the "Underwriting Agreement," "hereof," "herein" and all references of similar import, shall be deemed to mean and refer to this Supplemental Remarketing Agreement; (vi) all references therein to "the date hereof," "the date of this Agreement" and all similar references shall be deemed to refer to the date of this Supplemental Remarketing Agreement; (vii) all references therein to any "settlement date" shall be disregarded; and (viii) [other changes].] 4. Remarketing. Subject to the terms and conditions and in reliance upon the representations and warranties herein set forth or incorporated by reference herein and in the Remarketing Agreement, the Remarketing Agent agrees to use its reasonable efforts to remarket, in the manner set forth in Section 2(b) of the Remarketing Agreement, the aggregate principal amount, as the case may be, of Securities set forth in Schedule I hereto at a purchase price not less than 100% of the [Minimum Initial Remarketing Price] [aggregate principal amount of the Securities]. In connection therewith, the registered holder or holders thereof agree, in the manner specified in Section 5 hereof, to pay to the Remarketing Agent a Remarketing Fee equal to an amount not exceeding 25 basis points (0.25%) of [the Minimum Initial Remarketing Price] [such aggregate principal amount,] payable by deduction from any amount received in connection from such [Initial][Secondary] Remarketing in excess of the [Minimum Initial Remarketing Price] [aggregate principal amount of the Securities]. The right of each holder of Securities to have Securities tendered for purchase shall be limited to the extent set forth in the last sentence of Section 2(b) of the Remarketing Agreement (which is incorporated by reference herein). As more fully provided in Section 2(c) of the Remarketing Agreement (which is incorporated by reference herein), the Remarketing Agent is not obligated to purchase any Securities in the remarketing or otherwise, and neither the Sponsor nor the Remarketing Agent shall be obligated in any case to provide funds to make payment upon tender of Securities for remarketing. 5. Delivery and Payment. Delivery of payment for the remarketed Securities by the purchasers thereof identified by the Remarketing Agent and payment of the Remarketing Fee shall be made on the Remarketing Closing Date at the location and time specified in Schedule I hereto (or such later date not later than five Business Days after such date as the Remarketing Agent shall designate), which date and time may be postponed by agreement between the Remarketing Agent and the Company. Delivery of the remarketed Securities and payment of the A-3

22 Remarketing Fee shall be made to the Remarketing Agent against payment by the respective purchasers of the remarketed Securities of the consideration therefor as specified herein, which consideration shall be paid to the Collateral Agent for the account of the persons entitled thereto by certified or official bank check or checks drawn on or by a New York Clearing House bank and payable in immediately available funds or in immediately available funds by wire transfer to an account or accounts designated by the Collateral Agent. If the Securities are not represented by a Global Security held by or on behalf of The Depositary Trust Company, certificates for the Securities shall be registered in such names and denominations as the Remarketing Agent may request not less than one full Business Day in advance of the Remarketing Closing Date, and the Company, the Collateral Agent and the registered holder or holders thereof agree to have such certificates available for inspection, packaging and checking by the Remarketing Agent in New York, New York not later than 1:00 p.m. on the Business Day prior to the Remarketing Closing Date. 6. Notices. Unless otherwise specified, any notices, requests, consents or other communications given or made hereunder or pursuant hereto shall be made in writing or transmitted by any standard form of telecommunication, including telephone or telecopy, and confirmed in writing. All written notices and confirmations of notices by telecommunication shall be deemed to have been validly given or made when delivered or mailed, registered or certified mail, return receipt requested and postage prepaid. All such notices, requests, consents or other communications shall be addressed as follows: if to the Company, to NRG Energy, Inc., 901 Marquette Avenue, Suite 2300, Minneapolis, Minnesota, 55402, Attention: Chief Financial Officer; if to the Remarketing Agent, to Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated at World Financial Center, North Tower, New York, New York 10281, Attention: Phil Jones; with a copy to Skadden, Arps, Slate, Meagher & Flom LLP, Four Times Square, New York, NY 10036, Attention: John W. Osborn; and if to the Purchase Contract Agent, to _________________, _______________________________, or to such other address as any of the above shall specify to the other in writing. 7. Conditions to Obligations of Remarketing Agent. Anything herein to the contrary notwithstanding, the parties hereto agree (and the holders and beneficial owners of the Securities will be deemed to agree) that the obligations of the Remarketing Agent under this Agreement and the Remarketing Agreement are subject to the satisfaction of the conditions set forth in Section 7 of the Remarketing Agreement (which are incorporated herein by reference), and to the satisfaction, on A-4

23 the Remarketing Closing Date, of the conditions incorporated by reference herein from Section 6 of the Underwriting Agreement as modified by Section 3(b) hereof (including, without limitation, the delivery of opinions of counsel, officers' certificates and accountants' comfort letters in form and substance satisfactory to the Remarketing Agent, the accuracy as of the Remarketing Closing Date of the representations and warranties of the Company included and incorporated by reference herein and the performance by the Company of its obligations under the Remarketing Agreement and this Agreement as and when required hereby and thereby). In addition, anything herein or in the Remarketing Agreement to the contrary notwithstanding, the Remarketing Agreement and this Agreement may be terminated by the Remarketing Agent, by notice to the Company at any time prior to the time of settlement on the Remarketing Closing Date, if any of the events or conditions set forth in Section 10 of the Underwriting Agreement, as modified by Section 3(b) hereof, shall have occurred or shall exist. 8. Indemnity and Contribution. Anything herein to the contrary notwithstanding, the Remarketing Agent shall be entitled to indemnity and contribution on the terms and conditions set forth in the Remarketing Agreement. A-5

24 If the foregoing is in accordance with your understanding of our agreement, please sign and return to us the enclosed duplicate hereof, whereupon this letter and your acceptance shall represent a binding agreement among the Company and the Remarketing Agent. Very truly yours, NRG ENERGY, INC. By: -------------------------------- Name: Title: CONFIRMED AND ACCEPTED: - ---------------------------------- By: ------------------------------- Authorized Signatory [Add other Remarketing Agents, if any] - ------------------------------------------------ not individually but solely as Purchase Contract Agent and as attorney-in-fact for the holders of the Purchase Contracts By: ------------------------------- Name: Title: A-6

25 SCHEDULE I Securities subject to the remarketing: ___% Debentures due ________, 2006 of the Company (the "Securities"). Purchase Contract Agreement, dated as of _____________, 2001 (the "Purchase Contract Agreement") by and between NRG Energy, Inc., a Delaware corporation, and _________________, a national banking association. Pledge Agreement dated as of _____________, 2001 (the "Pledge Agreement") by and between NRG Energy, Inc., a Delaware corporation, _________________ a national banking association, and ________________. Indenture dated as of _____________, 2001 (the "Base Indenture") by and between NRG Energy, Inc., a Delaware corporation, and _________________. Supplemental Indenture, dated as of _____________, 2001 (the "Supplemental Indenture" and, together with the Base Indenture, the "Indenture") by and between NRG Energy, Inc., a Delaware corporation, and ________________________. [Minimum Initial Remarketing Price] [Aggregate Principal Amount of Securities: $ ____________] Underwriting Agreement, dated _____________, 2001 (the "Underwriting Agreement") among NRG Energy, Inc. and Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated, Credit Suisse First Boston Corporation, CIBC World Markets Corp., J. P. Morgan Securities Inc. and Salomon Smith Barney Inc. Remarketing Closing Date, Time and Location: A-7

1 EXHIBIT 25.1 ================================================================================ FORM T-1 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) |X| THE BANK OF NEW YORK (Exact name of trustee as specified in its charter) New York 13-5160382 (State of incorporation (I.R.S. employer if not a U.S. national bank) identification no.) One Wall Street, New York, N.Y. 10286 (Address of principal executive offices) (Zip code) NRG ENERGY, INC. (Exact name of obligor as specified in its charter) Delaware 41-1724239 (State or other jurisdiction of (I.R.S. employer incorporation or organization) identification no.) 901 Marquette Avenue, Suite 2300 Minneapolis, Minnesota 55402 (Address of principal executive offices) (Zip code) ------------- Debt Securities (Title of the indenture securities) ================================================================================

2 1. GENERAL INFORMATION. FURNISH THE FOLLOWING INFORMATION AS TO THE TRUSTEE: (A) NAME AND ADDRESS OF EACH EXAMINING OR SUPERVISING AUTHORITY TO WHICH IT IS SUBJECT. - -------------------------------------------------------------------------------- Name Address - -------------------------------------------------------------------------------- Superintendent of Banks of the State of 2 Rector Street, New York, New York N.Y. 10006, and Albany, N.Y. 12203 Federal Reserve Bank of New York 33 Liberty Plaza, New York, N.Y. 10045 Federal Deposit Insurance Corporation Washington, D.C. 20429 New York Clearing House Association New York, New York 10005 (B) WHETHER IT IS AUTHORIZED TO EXERCISE CORPORATE TRUST POWERS. Yes. 2. AFFILIATIONS WITH OBLIGOR. IF THE OBLIGOR IS AN AFFILIATE OF THE TRUSTEE, DESCRIBE EACH SUCH AFFILIATION. None. 16. LIST OF EXHIBITS. EXHIBITS IDENTIFIED IN PARENTHESES BELOW, ON FILE WITH THE COMMISSION, ARE INCORPORATED HEREIN BY REFERENCE AS AN EXHIBIT HERETO, PURSUANT TO RULE 7A-29 UNDER THE TRUST INDENTURE ACT OF 1939 (THE "ACT") AND 17 C.F.R. 229.10(D). 1. A copy of the Organization Certificate of The Bank of New York (formerly Irving Trust Company) as now in effect, which contains the authority to commence business and a grant of powers to exercise corporate trust powers. (Exhibit 1 to Amendment No. 1 to Form T-1 filed with Registration Statement No. 33-6215, Exhibits 1a and 1b to Form T-1 filed with Registration Statement No. 33-21672 and Exhibit 1 to Form T-1 filed with Registration Statement No. 33-29637.) 4. A copy of the existing By-laws of the Trustee. (Exhibit 4 to Form T-1 filed with Registration Statement No. 33-31019.) 6. The consent of the Trustee required by Section 321(b) of the Act. (Exhibit 6 to Form T-1 filed with Registration Statement No. 33-44051.) 7. A copy of the latest report of condition of the Trustee published pursuant to law or to the requirements of its supervising or examining authority. -2-

3 SIGNATURE Pursuant to the requirements of the Act, the Trustee, The Bank of New York, a corporation organized and existing under the laws of the State of New York, has duly caused this statement of eligibility to be signed on its behalf by the undersigned, thereunto duly authorized, all in The City of New York, and State of New York, on the 22nd day of February, 2001. THE BANK OF NEW YORK By: /S/ STEPHEN J. GIURLANDO ---------------------------- Name: STEPHEN J. GIURLANDO Title: VICE PRESIDENT

4 - -------------------------------------------------------------------------------- Consolidated Report of Condition of THE BANK OF NEW YORK of One Wall Street, New York, N.Y. 10286 And Foreign and Domestic Subsidiaries, a member of the Federal Reserve System, at the close of business December 31, 2000, published in accordance with a call made by the Federal Reserve Bank of this District pursuant to the provisions of the Federal Reserve Act. Dollar Amounts In Thousands ASSETS Cash and balances due from depository institutions: Noninterest-bearing balances and currency and coin.. $3,083,720 Interest-bearing balances........................... 4,949,333 Securities: Held-to-maturity securities......................... 740,315 Available-for-sale securities....................... 5,328,981 Federal funds sold and Securities purchased under agreements to resell................................ 5,695,708 Loans and lease financing receivables: Loans and leases, net of unearned income............................................ 36,590,456 LESS: Allowance for loan and lease losses...................................... 598,536 LESS: Allocated transfer risk reserve........................................... 12,575 Loans and leases, net of unearned income, allowance, and reserve............................ 35,979,345 Trading Assets......................................... 11,912,448 Premises and fixed assets (including capitalized leases)............................................. 763,241 Other real estate owned................................ 2,925 Investments in unconsolidated subsidiaries and associated companies................................ 183,836 Customers' liability to this bank on acceptances outstanding......................................... 424,303 Intangible assets...................................... 1,378,477 Other assets........................................... 3,823,797 ----------- Total assets........................................... $74,266,429 ===========

5 LIABILITIES Deposits: In domestic offices................................. $28,328,548 Noninterest-bearing................................. 12,637,384 Interest-bearing.................................... 15,691,164 In foreign offices, Edge and Agreement subsidiaries, and IBFs............................ 27,920,690 Noninterest-bearing................................. 470,130 Interest-bearing.................................... 27,450,560 Federal funds purchased and Securities sold under agreements to repurchase............................ 1,437,916 Demand notes issued to the U.S.Treasury................ 100,000 Trading liabilities.................................... 2,049,818 Other borrowed money: With remaining maturity of one year or less......... 1,279,125 With remaining maturity of more than one year through three years............................... 0 With remaining maturity of more than three years.... 31,080 Bank's liability on acceptances executed and outstanding......................................... 427,110 Subordinated notes and debentures...................... 1,646,000 Other liabilities...................................... 4,604,478 ----------- Total liabilities...................................... 67,824,765 =========== EQUITY CAPITAL Common stock........................................... 1,135,285 Surplus................................................ 1,008,775 Undivided profits and capital reserves................. 4,308,492 Net unrealized holding gains (losses) on available-for-sale securities....................... 27,768 Accumulated net gains (losses) on cash flow hedges..... 0 Cumulative foreign currency translation adjustments.... (38,656) ----------- Total equity capital................................... 6,441,664 ----------- Total liabilities and equity capital................... $74,266,429 ===========

6 I, Thomas J. Mastro, Senior Vice President and Comptroller of the above-named bank do hereby declare that this Report of Condition has been prepared in conformance with the instructions issued by the Board of Governors of the Federal Reserve System and is true to the best of my knowledge and belief. Thomas J. Mastro We, the undersigned directors, attest to the correctness of this Report of Condition and declare that it has been examined by us and to the best of our knowledge and belief has been prepared in conformance with the instructions issued by the Board of Governors of the Federal Reserve System and is true and correct. Thomas A. Renyi Alan R. Griffith Directors Gerald L. Hassell - --------------------------------------------------------------------------------