CPN Calpine Corp.

Calpine Recognized as Computerworld Honors Worldwide Finalist Calpine's use of portal technology recognized for innovation SAN JOSE, Calif., July 20 /PRNewswire-FirstCall/ -- Calpine Corporation's (NYSE:CPN) innovative use of portal technology has been recognized as one of the world's best uses of information technology to benefit society at this year's "Computerworld Honors 21st Century Achievement Awards." Calpine's case study, accepted into the Global Archives in April, was named one of six finalists -- and the only power company -- in the Environment, Energy and Agriculture category. The Calpine case study highlights its development and use of two strategic portals that present role-based views of key power generation and/or human resource data. The portals deliver business-critical information, gathered from a variety of sources, to managers and other decision makers in real-time or near real-time, eliminating the need to manually gather data, customize and distribute reports. "These portals are perfect examples of the creativity and innovation used at Calpine to solve business challenges. A seemingly simple act, such as personnel reporting, has been streamlined to the point that we are saving money and accelerating delivery from six days to same day, which makes the information far more valuable," said Scott Anderson, director of enterprise systems. With Calpine's power generation capacity increasing by a compound annual growth rate of approximately 60 percent since 1999, an efficient information flow is absolutely essential. The real-time and historical data collected, organized and published via the portals provide visibility into essential operational and business performance data, resulting in improved forecasting, more informed decision making, and enhanced customer service. "Many decisions must be made in real time to realize the full potential of business opportunities," said Barbara Kindel, V.P., solution engineering. "Our operations information portal, OISWeb, provides unprecedented visibility for operations and engineering personnel. This is truly a groundbreaking solution, and one that is making us more competitive." More information on the Computerworld Honors 21st Century Achievement Award and Calpine's complete case study can be found at http://www.cwheroes.org/ Calpine Corporation, celebrating its 20th year in power in 2004, is a leading North American power company dedicated to providing electric power to customers from clean, efficient, natural gas-fired and geothermal power facilities. The company generates power at plants it owns or leases in 21 states in the United States, three provinces in Canada and in the United Kingdom. Calpine is also the world's largest producer of renewable geothermal energy, and owns or controls approximately one trillion cubic feet equivalent of proved natural gas reserves in the United States and Canada. The company is listed on the S&P 500, and was named FORTUNE's 2004 America's Most Admired energy company. Calpine was founded in 1984 and is publicly traded on the New York Stock Exchange under the symbol CPN. For more information about Calpine, visit http://www.calpine.com/. DATASOURCE: Calpine Corporation CONTACT: Media Relations: Bill Highlander, ext. 1244, or Investor Relations: Rick Barraza, ext. 1125, both of Calpine Corporation, +1-408-995-5115 Web site: http://www.calpine.com/

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