The revenues placed Calpine 26th on The Press Democrat's list Sonoma County's largest companies.
Green power is a term for electricity generated from a renewable resource in a non-polluting way.
Cartwright forecasts that although geothermal energy is utilized for only about 4 percent of the state's electrical power generation today, it will play an increasingly important role. Calpine, with 100 employees at The Geysers, has three power plants with associated steam fields and owns other steam fields outright or in conjunction with Unocal, the nation's largest geothermal company. Calpine is not focusing all its geothermal attention on The Geysers, nor is it basing its entire operation on geothermal energy, Cartwright said. The company is currently preparing an environmental impact statement for a proposed 50 megawatt geothermal power plant 30 miles northeast of Shasta and has another facility in Mexico. Additionally, Calpine has interest in plants using gas-fired generators in other parts of California, Texas, Florida, New Jersey, New York, Virginia and Washington.