Calpine Corporation provides the United States economy with greater and cleaner sources of electricity. The company specializes in the production of geothermal power and has a program of developing and building natural gas-fired energy centers. At The Geysers, about 100 miles northeast of San Francisco, the company harnesses naturally heated steam from the earth to create electrical power. Calpine s renewable green power is available to consumers throughout California. The company s client list includes Alliant Energy, Aquilla Merchant Services, Arkansas Electric Cooperative, BP Energy Company, California Department of Water Resources, Citgo Petroleum, Pacific Gas and Electric Company, Natural Gas Pipeline Company of America and the New York Power Authority. Calpine Corporation is headquartered in San Jose, Calif.

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