Tractebel Energy Marketing, Inc. Selects PCI Software for Generation Asset Optimization

Business Wire, August 18, 2004

NORMAN, Okla. -- Power Costs, Inc. (PCI), the leading provider of enterprise asset optimization and generation supply management software, announced today that Tractebel Energy Marketing, Inc. (TEMI) has selected PCI GenTrader(R) to support its marketing and trading activities, in the United States, with particular focus on the ERCOT market.

PCI GenTrader(R) has been implemented for generation asset optimization in every North American energy market and is used to optimize nearly half of all the generation in the United States.

PCI Vice President Jason Kram said, "PCI is very pleased to have the opportunity to implement our solution at Tractebel Energy Marketing. We have worked collaboratively with TEMI over the past year to demonstrate the value of PCI GenTrader(R) and we are eager to build on the foundation we have established. With the addition of Tractebel Energy Marketing, Inc., we add yet another market participant in ERCOT. PCI software is used to optimize over 80 percent of the generation capacity in ERCOT."

PCI GenTrader(R) is a portfolio optimization model used for both short-term operations optimization and long-term planning. In addition to a detailed asset model, the system accommodates a wide variety of constraints for fuel, emissions, startups, and transmission. PCI software also includes PCI GenManager(TM) for bidding, ISO communication, and settlement and PCI GenPortal(R) for workflow automation. All products together complete the PCI Generation Supply Management System(TM).

About Tractebel Energy Marketing, Inc.

Based in Houston, Tractebel Energy Marketing, Inc. ("TEMI") is a wholly owned subsidiary of Tractebel North America, Inc. and is responsible for managing the Company's positions in electricity, natural gas and LNG within the United States, Mexico and Canada.

About Power Costs, Inc.

Power Costs, Inc. (PCI) is a leading provider of generation supply management and optimization software. PCI has grown steadily since its incorporation in 1992 by providing best of breed software, superior customer support and value-added services. PCI software is used to optimize nearly half of all generation in the United States and is recognized for delivering solutions that are critical for operations and for asset, financial and risk management. The company's client base includes AEP, BTU, Dominion, Duke Energy, TXU, Reliant, FP&L, Progress Energy, NorthWestern, LCRA, Seminole Electric, Sempra Energy Resources, GRU, OG&E, San Antonio - City Public Service, Tractebel, TexasGenco, Xcel, NIPSCO, and Mirant. For additional information regarding PCI, visit the company's Web site at www.PowerCosts.com or call 405-447-6933.