TAMPA, Fla. & MINNEAPOLIS—May 22, 2001 (BUSINESS WIRE)—Energy Softworx (http://www.energysoftworx.com/) and NRG Energy (http://www.nrgenergy.com/) announced today that they have entered into a software license agreement for the Energy Softworx fuels and railcar management software.

In making the announcement, Mr. Hardee, Chairman and CEO of Energy Softworx stated: "We are delighted that NRG, one of the top five independent power producers in the world, has selected our software solution. NRG joins the Energy Softworx family of 23 other power producers who are utilizing our software to manage their physical fuel supply and inventory on a real time basis in an effort to reduce the working capital requirements for fuel used in the production of electricity."

"Fuel is the largest direct cost component in generating electricity, and we anticipate that this software will improve our ability to effectively manage our fuel supply costs," said Craig Mataczynski, President and CEO, NRG North America.

About Energy Softworx

Energy Softworx provides software solutions for organizations involved in the consumption, sales, and transportation of fuel (i.e., coal, oil, pet coke, natural gas). The company, established in 1992, has licensed products to 24 leading energy providers including Progress Energy (NYSE:PGN), XCEL Energy (NYSE:XEL), FirstEnergy (NYSE:FE), Mirant Corporation (NYSE:MIR) and Exelon Corporation (NYSE:EXC). Energy Softworx products and services are delivered in Latin America by Intertek Software Solutions (ISS), a leading integrator of energy transaction management solutions in Latin America and by FSD International www.fsd.co.uk, a leading provider of energy/fuel trading and risk management software in the UK and Europe.

About NRG Energy

NRG Energy (NYSE:NRG), headquartered in Minneapolis, MN, is a global leader in independent power production with a portfolio of projects in operation, under construction or under signed acquisition which represent over 47,200 MW of gross generating capacity (including nearly 31,000 MW of fully owned capacity) throughout the US, Europe, Australia and Latin America. As of May 2001, NRG's projects use such diverse fuel sources as fossil fuels (natural gas, oil, coal and coal seam methane), green power renewable fuels (biomass, landfill gas, hydro and geothermal energy) and refuse-derived fuels.

Contacts:

NRG Energy, Inc.

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NRG Energy, Inc.
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