{\rtf1\deflang1033\deflangfe1033\margl720\margr720\margt360\margb360{\stylesheet{\fs20\lang1033\snext0 Normal;}
{\s1\sb240\keepn{\*\pn \pnlvl1\pndec\pnprev1\pnstart1\pnsp144}\b\f0\fs30\lang1033 \sbasedon0\snext0 heading 1;}
{\s2\sb200\keepn{\*\pn \pnlvl2\pndec\pnprev1\pnstart1\pnsp144{\pntxtb.}}\b\f0\fs26\lang1033 \sbasedon0\snext0 heading 2;}
{\s3\sb180\keepn{\*\pn \pnlvl3\pndec\pnprev1\pnstart1\pnsp144{\pntxtb.}}\b\f0\fs22\lang1033 \sbasedon0\snext0 heading 3;}
{\s4\sb160\keepn{\*\pn \pnlvl4\pnucltr\pnprev1\pnstart1\pnsp144{\pntxtb.}}\b\f0\fs22\lang1033 \sbasedon0\snext0 heading 4;}
{\s5\sb140\keepn{\*\pn \pnlvl5\pncltr\pnprev1\pnstart1\pnsp144}\b\f0\fs20\lang1033 \sbasedon0\snext0 heading 5;}
{\s6\tqc\lang1033\sbasedon0\snext6 footer;}
{\*\cs16 \additive\super\sbasedon10 footnote reference;}
{\*\cs18 \additive\sbasedon10 page number;}}
{\fonttbl{\f0\fnil Times New Roman;}{\f1\fnil Courier New}{\f2005\fnil Courier New;}{\f2010\fnil Wingdings;}{\f2020\fnil Webdings;}{\f2\fnil Arial;}{\f3\fnil Arial;}{\f4\fnil LucidaHandwriting;}{\f5\fnil Symbol;}{\f6\fnil Symbol;}{\f7\fnil Ferdsch;}{\f30\fnil Myriad Cn Semibold;}{\f31\fnil Myriad Roman;}{\f50\fnil Courier New;}{\f51\fnil Times New Roman;}{\f52\fnil Arial;}{\f53\fnil Symbol;}{\f54\fnil Wingdings;}{\f55\fnil Wingdings 2;}{\f56\fnil Wingdings 3;}{\f57\fnil Webdings;}{\f58\fnil Arial Narrow;}{\f59\fnil Arial Unicode MS;}{\f60\fnil Cyberbit;}{\f61\fnil Morningstar 1U Light;}{\f62\fnil Calibri;}}
{\colortbl;\red0\green0\blue0;\red127\green0\blue0;\red0\green0\blue255;\red127\green127\blue127;\red0\green51\blue153;\red255\green204\blue0;\red255\green255\blue255;\red246\green244\blue236;\red0\green0\blue0;\red153\green153\blue153;}
{\*\bkmkstart filing_1}{\*\bkmkend filing_1}{\*\bkmkstart doc_1_1}{\*\bkmkend doc_1_1}\par\pard\plain\brdrb\brdrs\cf1\f51\fs20\ql \~\par\pard\plain\brdrb\brdrs\sa22\cf1\f51\fs20\ql \~\par\pard\plain\sb44\cf1\f51\fs20\b\qc UNITED STATES\par\pard\plain\cf1\f51\fs20\b\qc SECURITIES AND EXCHANGE COMMISSION\par\pard\plain\cf1\f51\fs16\b\qc Washington, D.C. 20549\par\pard\plain\cf1\f51\fs9\ql \~\par\pard\plain\brdrb\brdrs\sa22\cf1\f51\fs20\qc \~\par\pard\plain\sb88\cf1\f51\fs16\b\i\qc Amendment No.\~2\par\pard\plain\cf1\f51\fs16\b\i\qc to\par\pard\plain\cf1\f51\fs20\b\qc SCHEDULE TO\par\pard\plain\cf1\f51\fs20\b\qc (Rule 14d-100)\par\pard\plain\sb198\cf1\f51\fs16\qc Tender Offer Statement Under Section 14(d)(1) or 13(e)(1)\par\pard\plain\cf1\f51\fs16\qc of the Securities Exchange Act of 1934\par\pard\plain\sb88\cf1\f51\fs24\b\qc NRG Energy, Inc.\par\pard\plain\cf1\f51\fs16\qc (Name of Subject Company (Issuer))\par\pard\plain\sb198\cf1\f51\fs24\b\qc Exelon Corporation\par\pard\plain\cf1\f51\fs24\b\qc Exelon Xchange Corporation\par\pard\plain\cf1\f51\fs16\qc (Name of Filing Persons (Offerors))\par\pard\plain\sb198\cf1\f51\fs16\b\qc Common Stock, par value $0.01 per share\par\pard\plain\cf1\f51\fs16\qc (Title of Class of Securities)\par\pard\plain\sb198\cf1\f51\fs16\b\qc 30161N101\par\pard\plain\cf1\f51\fs16\qc (CUSIP Number of Class of Securities)\par\pard\plain\cf1\f51\fs18\ql \~
\par\pard\plain
{\trowd\clvertalc\cellx5400\clvertalb\cellx5615\clvertalc\cellx10799\trrh-66
\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell{
{\trowd\clvertalc\cellx5400\clvertalb\cellx5615\clvertalc\cellx10799\trrh-66\row}}}
{\trowd\clvertalb\cellx5400\clvertalb\cellx5615\clvertalb\cellx10799\trrh1461
\pard\plain\intbl\cf1\f51\fs16\b\qc William A. Von Hoene, Jr.\par\pard\plain\intbl\cf1\f51\fs16\b\qc Executive Vice President and General Counsel\par\pard\plain\intbl\cf1\f51\fs16\b\qc Exelon Corporation\par\pard\plain\intbl\cf1\f51\fs16\b\qc 10 South Dearborn Street\par\pard\plain\intbl\cf1\f51\fs16\b\qc P.O. Box 805379\par\pard\plain\intbl\cf1\f51\fs16\b\qc Chicago, Illinois 60603\par\pard\plain\intbl\cf1\f51\fs16\b\qc 800-483-3220\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\cf1\f51\fs16\b\qc Christopher M. Crane\par\pard\plain\intbl\cf1\f51\fs16\b\qc President\par\pard\plain\intbl\cf1\f51\fs16\b\qc Exelon Xchange Corporation\par\pard\plain\intbl\cf1\f51\fs16\b\qc 10 South Dearborn Street\par\pard\plain\intbl\cf1\f51\fs16\b\qc P.O. Box 805379\par\pard\plain\intbl\cf1\f51\fs16\b\qc Chicago, Illinois 60603\par\pard\plain\intbl\cf1\f51\fs16\b\qc 800-483-3220\cell{
{\trowd\clvertalb\cellx5400\clvertalb\cellx5615\clvertalb\cellx10799\trrh1461\row}}}\pard\plain\sb88\cf1\f51\fs16\qc (Names, addresses and telephone numbers of persons authorized to\par\pard\plain\cf1\f51\fs16\qc receive notices and communications on behalf of filing persons)\par\pard\plain\sb198\cf1\f51\fs16\b\qc Copies to:\par\pard\plain\cf1\f51\fs16\b\qc Thomas A. Cole\par\pard\plain\cf1\f51\fs16\b\qc Frederick C. Lowinger\par\pard\plain\cf1\f51\fs16\b\qc Richard W. Astle\par\pard\plain\cf1\f51\fs16\b\qc Michael A. Gordon\par\pard\plain\cf1\f51\fs16\b\qc Scott R. Williams\par\pard\plain\cf1\f51\fs16\b\qc Sidley Austin LLP\par\pard\plain\cf1\f51\fs16\b\qc One South Dearborn Street\par\pard\plain\cf1\f51\fs16\b\qc Chicago, Illinois 60603\par\pard\plain\cf1\f51\fs16\b\qc (312) 853-7000\par\pard\plain\cf1\f51\fs9\ql \~\par\pard\plain\brdrb\brdrs\sa22\cf1\f51\fs20\qc \~\par\pard\plain\sb88\cf1\f51\fs16\b\qc CALCULATION OF FILING FEE\par\pard\plain\cf1\f51\fs18\ql \~\par\pard\plain\brdrb\brdrs\cf1\f51\fs20\ql \~\par\pard\plain\brdrb\brdrs\sa22\cf1\f51\fs20\ql \~
\par\pard\plain
{\trowd\clvertalc\cellx5400\clvertalb\cellx5615\clvertalc\cellx10799\trrh-66
\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell{
{\trowd\clvertalc\cellx5400\clvertalb\cellx5615\clvertalc\cellx10799\trrh-66\row}}}
{\trowd\clbrdrb\brdrs\brdrcf1\cellx5400\clbrdrb\brdrs\brdrcf1\clvertalb\cellx5615\clbrdrb\brdrs\brdrcf1\cellx10799\trrh300
\pard\plain\intbl\cf1\f51\fs13\qc Transaction Valuation\plain\intbl\cf1\f51\fs11\qc\super (1)\par\pard\plain\intbl\cf1\f51\fs9\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\qc Amount of Filing Fee\plain\intbl\cf1\f51\fs11\qc\super (2)\par\pard\plain\intbl\cf1\f51\fs9\ql \~\cell{
{\trowd\clbrdrb\brdrs\brdrcf1\cellx5400\clbrdrb\brdrs\brdrcf1\clvertalb\cellx5615\clbrdrb\brdrs\brdrcf1\cellx10799\trrh300\row}}}
{\trowd\clvertalc\cellx5400\clvertalc\cellx10800\trrh-66
\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell{
{\trowd\clvertalc\cellx5400\clvertalc\cellx10800\trrh-66\row}}}
{\trowd\cellx5400\clvertalb\cellx5615\cellx10799\trrh411
\pard\plain\intbl\cf1\f51\fs13\qc $6,347,846,550.50\~\~\~\~\~\~\~\~\~\~\par\pard\plain\intbl\cf1\f51\fs9\ql \~\par\pard\plain\intbl\cf1\f51\fs9\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\qc $249,470.37\~\~\~\~\~\~\~\~\~\~\~\~\~\~\~\~\par\pard\plain\intbl\cf1\f51\fs9\ql \~\par\pard\plain\intbl\cf1\f51\fs9\ql \~\cell{
{\trowd\cellx5400\clvertalb\cellx5615\cellx10799\trrh411\row}}}\pard\plain\brdrb\brdrs\cf1\f51\fs20\ql \~\par\pard\plain\brdrb\brdrs\sa22\cf1\f51\fs20\ql \~\par\pard\plain\cf1\f51\fs9\ql \~
\par\pard\plain
{\trowd\cellx323\cellx10799\trrh1203
\pard\plain\intbl\cf1\f51\fs13\ql (1)\cell\pard\plain\intbl\cf1\f51\fs13\ql The transaction valuation is estimated solely for purposes of calculating the filing fee pursuant to Rule 0-11(d). The value of the transaction was calculated as the product of\plain\intbl\cf1\f51\fs13\ql  (i)\~279,026,222 shares of NRG Energy, Inc. common stock (the sum of (a)\~233,027,222 shares of NRG Energy, Inc. common stock outstanding, (b)\~4\~million shares of NRG\plain\intbl\cf1\f51\fs13\ql  Energy, Inc. common stock issuable upon the exercise of outstanding options, (c)\~40\~million shares of NRG Energy, Inc. common stock issuable upon the conversion of\plain\intbl\cf1\f51\fs13\ql  outstanding shares of NRG Energy, Inc. preferred stock and (d)\~2\~million shares of NRG Energy, Inc. common stock issuable upon the exercise or vesting of other equity awards,\plain\intbl\cf1\f51\fs13\ql  in each case as of September\~30, 2008 (each as reported in NRG Energy, Inc.\u8217?s Quarterly Report on Form 10-Q for the quarter ended September\~30, 2008), less 1,000\plain\intbl\cf1\f51\fs13\ql  shares of NRG common stock owned by Exelon Corporation and Exelon Xchange Corporation, a direct wholly-owned subsidiary of Exelon Corporation and (ii)\~the average of\plain\intbl\cf1\f51\fs13\ql  the high and low sales prices of NRG Energy, Inc. common stock as reported on the New York Stock Exchange on November\~11, 2008 ($22.75).\cell{
{\trowd\cellx323\cellx10799\trrh1203\row}}}
\page\par\pard\plain\f0\fs4\par\pard\plain\f0\fs2\brdrt\brdrs\brdrw15\brdrcf2\brdrsp0\par\pard\plain\f0\fs4\par
\par\pard\plain
{\trowd\cellx323\cellx10799\trrh344
\pard\plain\intbl\cf1\f51\fs13\ql (2)\cell\pard\plain\intbl\cf1\f51\fs13\ql The amount of the filing fee, calculated in accordance with Rule 0-11 of the Securities Exchange Act of 1934, as amended, equals $39.30 per $1,000,000 of the value of the\plain\intbl\cf1\f51\fs13\ql  transaction.\cell{
{\trowd\cellx323\cellx10799\trrh344\row}}}\pard\plain\cf1\f51\fs9\ql \~
\par\pard\plain
{\trowd\cellx167\cellx10799\trrh344
\pard\plain\intbl\cf1\f54\fs13\ql x\cell\pard\plain\intbl\cf1\f51\fs13\ql Check the box if any part of the fee is offset as provided by Rule 0-11(a)(2) and identify the filing with which the offsetting fee was previously paid. Identify the previous filing\plain\intbl\cf1\f51\fs13\ql  by registration statement number, or the Form or Schedule and the date of its filing.\cell{
{\trowd\cellx167\cellx10799\trrh344\row}}}\pard\plain\cf1\f51\fs18\ql \~
\par\pard\plain
{\trowd\clvertalc\cellx2592\clvertalb\cellx2700\clvertalc\cellx5292\clvertalb\cellx5399\clvertalc\cellx8099\clvertalb\cellx8206\clvertalc\cellx10798\trrh-66
\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell{
{\trowd\clvertalc\cellx2592\clvertalb\cellx2700\clvertalc\cellx5292\clvertalb\cellx5399\clvertalc\cellx8099\clvertalb\cellx8206\clvertalc\cellx10798\trrh-66\row}}}
{\trowd\cellx2592\clvertalb\cellx2700\cellx5292\clvertalb\cellx5399\cellx8099\clvertalb\cellx8206\cellx10798\trrh172
\pard\plain\intbl\cf1\f51\fs13\ql Amount Previously Paid:\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql $249,470.37\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell{
{\trowd\cellx2592\clvertalb\cellx2700\cellx5292\clvertalb\cellx5399\cellx8099\clvertalb\cellx8206\cellx10798\trrh172\row}}}
{\trowd\cellx2592\clvertalb\cellx2700\cellx5292\clvertalb\cellx5399\cellx8099\clvertalb\cellx8206\cellx10798\trrh172
\pard\plain\intbl\cf1\f51\fs13\ql Form or Registration No.:\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql Form S-4 (File No. 333-155278)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell{
{\trowd\cellx2592\clvertalb\cellx2700\cellx5292\clvertalb\cellx5399\cellx8099\clvertalb\cellx8206\cellx10798\trrh172\row}}}
{\trowd\cellx2592\clvertalb\cellx2700\cellx5292\clvertalb\cellx5399\cellx8099\clvertalb\cellx8206\cellx10798\trrh172
\pard\plain\intbl\cf1\f51\fs13\ql Filing Party:\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql Exelon Corporation\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell{
{\trowd\cellx2592\clvertalb\cellx2700\cellx5292\clvertalb\cellx5399\cellx8099\clvertalb\cellx8206\cellx10798\trrh172\row}}}
{\trowd\cellx2592\clvertalb\cellx2700\cellx5292\clvertalb\cellx5399\cellx8099\clvertalb\cellx8206\cellx10798\trrh172
\pard\plain\intbl\cf1\f51\fs13\ql Date Filed:\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql November\~12, 2008\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell{
{\trowd\cellx2592\clvertalb\cellx2700\cellx5292\clvertalb\cellx5399\cellx8099\clvertalb\cellx8206\cellx10798\trrh172\row}}}\pard\plain\cf1\f51\fs9\ql \~
\par\pard\plain
{\trowd\cellx323\cellx9845\trrh172
\pard\plain\intbl\cf1\f54\fs13\ql ¨\cell\pard\plain\intbl\cf1\f51\fs13\ql Check the box if the filing relates solely to preliminary communications made before the commencement of a tender offer.\cell{
{\trowd\cellx323\cellx9845\trrh172\row}}}\pard\plain\sb88\fi352\cf1\f51\fs13\ql Check the appropriate boxes below to designate any transactions to which the statement relates:\par\pard\plain\cf1\f51\fs9\ql \~
\par\pard\plain
{\trowd\clvertalc\cellx323\cellx755\cellx6457\trrh172
\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\cf1\f54\fs13\ql x\cell\pard\plain\intbl\cf1\f51\fs13\ql third-party tender offer subject to Rule 14d-1.\cell{
{\trowd\clvertalc\cellx323\cellx755\cellx6457\trrh172\row}}}\pard\plain\cf1\f51\fs9\ql \~
\par\pard\plain
{\trowd\clvertalc\cellx323\cellx755\cellx6132\trrh172
\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\cf1\f54\fs13\ql ¨\cell\pard\plain\intbl\cf1\f51\fs13\ql issuer tender offer subject to Rule 13e-4.\cell{
{\trowd\clvertalc\cellx323\cellx755\cellx6132\trrh172\row}}}\pard\plain\cf1\f51\fs9\ql \~
\par\pard\plain
{\trowd\clvertalc\cellx323\cellx755\cellx6603\trrh172
\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\cf1\f54\fs13\ql ¨\cell\pard\plain\intbl\cf1\f51\fs13\ql going-private transaction subject to Rule 13e-3.\cell{
{\trowd\clvertalc\cellx323\cellx755\cellx6603\trrh172\row}}}\pard\plain\cf1\f51\fs9\ql \~
\par\pard\plain
{\trowd\clvertalc\cellx323\cellx755\cellx6523\trrh172
\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\cf1\f54\fs13\ql ¨\cell\pard\plain\intbl\cf1\f51\fs13\ql amendment to Schedule 13D under Rule 13d-2.\cell{
{\trowd\clvertalc\cellx323\cellx755\cellx6523\trrh172\row}}}\pard\plain\sb88\fi352\cf1\f51\fs13\ql Check the following box if the filing is a final amendment reporting the results of the tender offer:\~\~\~\~\plain\cf1\f54\fs13\ql ¨
\page\par\pard\plain\f0\fs4\par\pard\plain\f0\fs2\brdrt\brdrs\brdrw15\brdrcf2\brdrsp0\par\pard\plain\f0\fs4\par\par\pard\plain\cf1\f51\fs16\b\ql Items 1 through 9.\par\pard\plain\sb198\fi704\cf1\f51\fs16\ql This Amendment No.\~2 to Tender Offer Statement on Schedule TO (as amended, the \u8220?Schedule TO\u8221?) amends and supplements the\plain\cf1\f51\fs16\ql  statement originally filed on November\~12, 2008 by Exelon Corporation, a Pennsylvania corporation (\u8220?Exelon\u8221?), and Exelon Xchange\plain\cf1\f51\fs16\ql  Corporation, a Delaware corporation and a direct wholly-owned subsidiary of Exelon (\u8220?Exelon Xchange\u8221?). This Schedule TO relates to the\plain\cf1\f51\fs16\ql  offer by Exelon, through Exelon Xchange, to exchange for each of the issued and outstanding shares of common stock, par value $0.01 per share (the\plain\cf1\f51\fs16\ql  \u8220?NRG common stock\u8221?), of NRG Energy, Inc., a Delaware corporation (\u8220?NRG\u8221?), 0.485 of a share of Exelon common stock,\plain\cf1\f51\fs16\ql  without par value (the \u8220?Exelon common stock\u8221?). The Offer (as defined below) is made on the terms and subject to the conditions contained\plain\cf1\f51\fs16\ql  in the prospectus/offer to exchange, dated November\~12, 2008 related to the Offer (the \u8220?Prospectus\u8221?), and in the related Letter of Transmittal\plain\cf1\f51\fs16\ql  (which, together as they may be amended, supplemented or modified from time to time, constitute the \u8220?Offer\u8221?). Exelon also filed a\plain\cf1\f51\fs16\ql  registration statement on Form S-4 (File No. 333-155278) (the \u8220?Registration Statement\u8221?) on November 12, 2008 relating to the Offer, of\plain\cf1\f51\fs16\ql  which the Prospectus forms a part. The terms and conditions of the Offer are set forth in the Prospectus and the related Letter of Transmittal, which are\plain\cf1\f51\fs16\ql  set forth as Exhibits (a)(4) and (a)(1)(A) hereto, respectively.\par\pard\plain\sb198\fi704\cf1\f51\fs16\ql All information contained in the Prospectus and the Letter of Transmittal, and any prospectus supplement or any other supplement thereto related\plain\cf1\f51\fs16\ql  to the Offer, is hereby expressly incorporated herein by reference with respect to Items 1 through 9, except that such information is amended and\plain\cf1\f51\fs16\ql  supplemented to the extent specifically provided herein.\par\pard\plain\sb198\cf1\f51\fs16\b\ql Item\~10. Financial Statements.\par\pard\plain\sb198\fi704\cf1\f51\fs16\ql Not applicable.\par\pard\plain\sb198\cf1\f51\fs16\b\ql Item\~11. Additional Information.\par\pard\plain\sb198\fi704\cf1\f51\fs16\ql Not applicable.\par\pard\plain\sb198\cf1\f51\fs16\b\ql Item\~12. Exhibits.\par\pard\plain\sb198\fi704\cf1\f51\fs16\ql Item\~12 is hereby amended and supplemented by adding the following:\par\pard\plain\sb198\fi704\cf1\f51\fs16\ql Exhibit (a)(5)(D) Communication to Exelon\u8217?s employees dated November\~12, 2008, made available to Exelon employees on November\~14,\plain\cf1\f51\fs16\ql  2008.\par\pard\plain\cf1\f51\fs18\ql \~
\par\pard\plain
{\trowd\clvertalc\cellx650\clvertalb\cellx1081\clvertalc\cellx10798\trrh-66
\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell{
{\trowd\clvertalc\cellx650\clvertalb\cellx1081\clvertalc\cellx10798\trrh-66\row}}}
{\trowd\clvertalb\cellx650\clvertalb\cellx1081\clbrdrb\brdrs\brdrcf1\clvertalb\cellx10798\trrh452
\pard\plain\intbl\cf1\f51\fs16\b\qc Exhibit
\par\pard\plain\intbl\fs16\pard\plain\intbl\brdrb\brdrs\cf1\f51\fs16\b\qc Number\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\b\ql Description of Exhibits\cell{
{\trowd\clvertalb\cellx650\clvertalb\cellx1081\clbrdrb\brdrs\brdrcf1\clvertalb\cellx10798\trrh452\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(1)(A)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Letter of Transmittal*\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(1)(B)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Notice of Guaranteed Delivery*\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(1)(C)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Letter to Brokers, Dealers, Commercial Banks, Trust Companies and Other Nominees*\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(1)(D)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Letter to Clients to be Used by Brokers, Dealers, Commercial Banks, Trust Companies and Other Nominees*\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(1)(E)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Guidelines for Certification of Taxpayer Identification Number on Substitute Form W-9*\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh413
\pard\plain\intbl\cf1\f51\fs16\ql (a)(1)(F)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Letter dated November 12, 2008 from John W. Rowe, Chairman and Chief Executive Officer of Exelon Corporation, addressed to\plain\intbl\cf1\f51\fs16\ql  stockholders of NRG Energy, Inc.*\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh413\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(2)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Not applicable.\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(3)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Not applicable.\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(4)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Prospectus/offer to exchange relating to Exelon common stock to be issued in the Offer*\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(5)(A)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Summary Advertisement*\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
\page\par\pard\plain\f0\fs4\par\pard\plain\f0\fs2\brdrt\brdrs\brdrw15\brdrcf2\brdrsp0\par\pard\plain\f0\fs4\par
\par\pard\plain
{\trowd\clvertalc\cellx650\clvertalb\cellx1081\clvertalc\cellx10798\trrh-66
\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell{
{\trowd\clvertalc\cellx650\clvertalb\cellx1081\clvertalc\cellx10798\trrh-66\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh429
\pard\plain\intbl\cf1\f51\fs16\ql (a)(5)(B)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Verified Complaint for Declaratory and Injunctive Relief, as filed with the Court of Chancery of the State of Delaware by Exelon and\plain\intbl\cf1\f51\fs16\ql  Exelon Xchange on November 11, 2008***\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh429\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(5)(C)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Press Release issued by Exelon, dated November 12, 2008**\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh412
\pard\plain\intbl\cf1\f51\fs16\ql (a)(5)(D)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Communication to Exelon\u8217?s employees dated November 12, 2008, made available to Exelon\u8217?s employees on November\~14,\plain\intbl\cf1\f51\fs16\ql  2008 (incorporated by reference to Exelon\u8217?s Rule 425 filing of November 14, 2008)\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh412\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (b)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Not applicable.\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (d)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Not applicable.\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (g)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Not applicable.\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (h)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Opinion of Sidley Austin LLP (regarding certain tax matters)*\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}\pard\plain\sb198\cf1\f51\fs16\ql *Incorporated by reference to Exelon\u8217?s Registration Statement on Form S-4 filed on November\~12, 2008.\par\pard\plain\cf1\f51\fs16\ql **Incorporated by reference to Exhibit 99.2 to Exelon\u8217?s Current Report on Form 8-K filed on November\~12, 2008.\par\pard\plain\cf1\f51\fs16\ql ***Previously filed on Amendment No. 1 to Tender Offer Statement on Schedule TO on November 12, 2008.\par\pard\plain\sb198\cf1\f51\fs16\b\ql Item\~13. Information Required by Schedule 13E-3.\par\pard\plain\sb198\fi704\cf1\f51\fs16\ql Not Applicable.
\page\par\pard\plain\f0\fs4\par\pard\plain\f0\fs2\brdrt\brdrs\brdrw15\brdrcf2\brdrsp0\par\pard\plain\f0\fs4\par\par\pard\plain\cf1\f51\fs16\b\qc SIGNATURE\par\pard\plain\sb198\fi462\cf1\f51\fs16\ql After due inquiry and to the best of the knowledge and belief of the undersigned, the undersigned hereby certifies that the information set forth in\plain\cf1\f51\fs16\ql  this Schedule TO is true, complete and correct.\par\pard\plain\cf1\f51\fs27\ql \~\par\pard\plain\cf1\f51\fs9\ql \~\par\pard\plain\cf1\f51\fs9\ql \~
\par\pard\plain
{\trowd\clvertalc\cellx345\clvertalb\cellx690\clvertalc\cellx4948\clvertalb\cellx5048\clvertalc\cellx5422\clvertalb\cellx5522\clvertalc\cellx5972\clvertalb\cellx6422\clvertalc\cellx10796\trrh-66
\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell{
{\trowd\clvertalc\cellx345\clvertalb\cellx690\clvertalc\cellx4948\clvertalb\cellx5048\clvertalc\cellx5422\clvertalb\cellx5522\clvertalc\cellx5972\clvertalb\cellx6422\clvertalc\cellx10796\trrh-66\row}}}
{\trowd\cellx4948\clvertalb\cellx5048\cellx5422\clvertalb\cellx5522\cellx10796\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql Dated: November\~14, 2008\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\cf1\f51\fs16\b\ql EXELON CORPORATION\cell{
{\trowd\cellx4948\clvertalb\cellx5048\cellx5422\clvertalb\cellx5522\cellx10796\trrh206\row}}}
{\trowd\clvertalc\cellx345\clvertalc\cellx4948\clvertalc\cellx5423\clvertalc\cellx5973\clvertalc\cellx10797\trrh-66
\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell{
{\trowd\clvertalc\cellx345\clvertalc\cellx4948\clvertalc\cellx5423\clvertalc\cellx5973\clvertalc\cellx10797\trrh-66\row}}}
{\trowd\cellx345\clvertalb\cellx690\cellx4948\clvertalb\cellx5048\cellx5422\clvertalb\cellx5522\cellx5972\clbrdrb\brdrs\brdrcf1\clvertalb\cellx6422\clbrdrb\brdrs\brdrcf1\cellx10796\trrh206
\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\cf1\f51\fs16\ql By:\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\cf1\f51\fs16\ql \~\~\~\~/s/ William A. Von Hoene, Jr.\~\~\~\~\~\~\~\~\cell{
{\trowd\cellx345\clvertalb\cellx690\cellx4948\clvertalb\cellx5048\cellx5422\clvertalb\cellx5522\cellx5972\clbrdrb\brdrs\brdrcf1\clvertalb\cellx6422\clbrdrb\brdrs\brdrcf1\cellx10796\trrh206\row}}}
{\trowd\cellx345\clvertalb\cellx690\cellx4948\clvertalb\cellx5048\cellx5422\clvertalb\cellx5522\cellx5972\clvertalb\cellx6422\clvertalb\cellx10796\trrh429
\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\cf1\f51\fs16\ql Name:\~\~William A. Von Hoene, Jr.\par\pard\plain\intbl\cf1\f51\fs16\ql Title:\~\~\~\~Executive Vice President and General Counsel\cell{
{\trowd\cellx345\clvertalb\cellx690\cellx4948\clvertalb\cellx5048\cellx5422\clvertalb\cellx5522\cellx5972\clvertalb\cellx6422\clvertalb\cellx10796\trrh429\row}}}
{\trowd\clvertalc\cellx4948\clvertalc\cellx5423\clvertalc\cellx10798\trrh-66
\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell{
{\trowd\clvertalc\cellx4948\clvertalc\cellx5423\clvertalc\cellx10798\trrh-66\row}}}
{\trowd\cellx4948\clvertalb\cellx5048\cellx5422\clvertalb\cellx5522\cellx10796\trrh206
\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\cf1\f51\fs16\b\ql EXELON XCHANGE CORPORATION\cell{
{\trowd\cellx4948\clvertalb\cellx5048\cellx5422\clvertalb\cellx5522\cellx10796\trrh206\row}}}
{\trowd\clvertalc\cellx345\clvertalc\cellx4948\clvertalc\cellx5423\clvertalc\cellx5973\clvertalc\cellx10797\trrh-66
\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell{
{\trowd\clvertalc\cellx345\clvertalc\cellx4948\clvertalc\cellx5423\clvertalc\cellx5973\clvertalc\cellx10797\trrh-66\row}}}
{\trowd\cellx345\clvertalb\cellx690\cellx4948\clvertalb\cellx5048\cellx5422\clvertalb\cellx5522\cellx5972\clbrdrb\brdrs\brdrcf1\clvertalb\cellx6422\clbrdrb\brdrs\brdrcf1\cellx10796\trrh206
\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\cf1\f51\fs16\ql By:\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\cf1\f51\fs16\ql \~\~\~\~/s/ William A. Von Hoene, Jr.\~\~\~\~\~\~\~\~\cell{
{\trowd\cellx345\clvertalb\cellx690\cellx4948\clvertalb\cellx5048\cellx5422\clvertalb\cellx5522\cellx5972\clbrdrb\brdrs\brdrcf1\clvertalb\cellx6422\clbrdrb\brdrs\brdrcf1\cellx10796\trrh206\row}}}
{\trowd\cellx345\clvertalb\cellx690\cellx4948\clvertalb\cellx5048\cellx5422\clvertalb\cellx5522\cellx5972\clvertalb\cellx6422\clvertalb\cellx10796\trrh429
\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\cell\pard\plain\intbl\cf1\f51\fs16\ql Name:\~\~William A. Von Hoene, Jr.\par\pard\plain\intbl\cf1\f51\fs16\ql Title:\~\~\~\~Executive Vice President and General Counsel\cell{
{\trowd\cellx345\clvertalb\cellx690\cellx4948\clvertalb\cellx5048\cellx5422\clvertalb\cellx5522\cellx5972\clvertalb\cellx6422\clvertalb\cellx10796\trrh429\row}}}
\page\par\pard\plain\f0\fs4\par\pard\plain\f0\fs2\brdrt\brdrs\brdrw15\brdrcf2\brdrsp0\par\pard\plain\f0\fs4\par\pard\plain\cf1\f51\fs16\b\qc EXHIBIT INDEX\par\pard\plain\cf1\f51\fs18\ql \~
\par\pard\plain
{\trowd\clvertalc\cellx650\clvertalb\cellx1081\clvertalc\cellx10798\trrh-66
\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell\pard\plain\intbl\f0\fs16\ql \~\cell{
{\trowd\clvertalc\cellx650\clvertalb\cellx1081\clvertalc\cellx10798\trrh-66\row}}}
{\trowd\clvertalb\cellx650\clvertalb\cellx1081\clbrdrb\brdrs\brdrcf1\clvertalb\cellx10798\trrh452
\pard\plain\intbl\cf1\f51\fs16\ql Exhibit
\par\pard\plain\intbl\fs16\pard\plain\intbl\brdrb\brdrs\cf1\f51\fs16\ql Number\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Description of Exhibits\cell{
{\trowd\clvertalb\cellx650\clvertalb\cellx1081\clbrdrb\brdrs\brdrcf1\clvertalb\cellx10798\trrh452\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(1)(A)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Letter of Transmittal*\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(1)(B)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Notice of Guaranteed Delivery*\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(1)(C)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Letter to Brokers, Dealers, Commercial Banks, Trust Companies and Other Nominees*\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(1)(D)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Letter to Clients to be Used by Brokers, Dealers, Commercial Banks, Trust Companies and Other Nominees*\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(1)(E)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Guidelines for Certification of Taxpayer Identification Number on Substitute Form W-9*\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh412
\pard\plain\intbl\cf1\f51\fs16\ql (a)(1)(F)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Letter dated November 12, 2008 from John W. Rowe, Chairman and Chief Executive Officer of Exelon Corporation, addressed to\plain\intbl\cf1\f51\fs16\ql  stockholders of NRG Energy, Inc.*\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh412\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(2)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Not applicable.\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(3)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Not applicable.\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(4)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Prospectus/offer to exchange relating to Exelon common stock to be issued in the Offer*\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(5)(A)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Summary Advertisement*\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh412
\pard\plain\intbl\cf1\f51\fs16\ql (a)(5)(B)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Verified Complaint for Declaratory and Injunctive Relief, as filed with the Court of Chancery of the State of Delaware by Exelon and\plain\intbl\cf1\f51\fs16\ql  Exelon Xchange on November 11, 2008***\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh412\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (a)(5)(C)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Press Release issued by Exelon, dated November 12, 2008**\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh412
\pard\plain\intbl\cf1\f51\fs16\ql (a)(5)(D)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Communication to Exelon\u8217?s employees dated November 12, 2008, made available to Exelon\u8217?s employees on November\~14,\plain\intbl\cf1\f51\fs16\ql  2008 (incorporated by reference to Exelon\u8217?s Rule 425 filing of November 14, 2008)\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh412\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (b)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Not applicable.\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (d)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Not applicable.\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (g)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Not applicable.\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206
\pard\plain\intbl\cf1\f51\fs16\ql (h)\cell\pard\plain\intbl\cf1\f51\fs13\ql \~\~\cell\pard\plain\intbl\cf1\f51\fs16\ql Opinion of Sidley Austin LLP (regarding certain tax matters)*\cell{
{\trowd\cellx650\clvertalb\cellx1081\clvertalb\cellx10798\trrh206\row}}}\pard\plain\sb198\cf1\f51\fs16\ql *Incorporated by reference to Exelon\u8217?s Registration Statement on Form S-4 filed on November\~12, 2008.\par\pard\plain\cf1\f51\fs16\ql **Incorporated by reference to Exhibit 99.2 to Exelon\u8217?s Current Report on Form 8-K filed on November\~12, 2008.\par\pard\plain\cf1\f51\fs16\ql ***Previously filed on Amendment No. 1 to Tender Offer Statement on Schedule TO on November 12, 2008.}