Dennis J. Gilles

Calpine Corp. operates as power generation company, which engages in the ownership and operation of natural-gas fired and geothermal power plants. It sells power and related services to wholesale customers who include commercial and industrial end-users, state and regional wholesale market operators, and retail customers. The company was founded by Peter Cartwright in June 1984 and is headquartered in Houston, TX.

Geothermal Energy Association operates as a trade companies Association. The company is headquartered in Washington, DC.

The Geothermal Resources Council operates an educational association. The non-profit company is based in Davis, CA.

U.S. Geothermal, Inc. operates as a renewable energy company. The firm engages in the construction, management, and operation of power plants which utilizes geothermal resources to produce electricity. It operates through two segments: Operating Plants and Corporate & Development. The Operating Plant segment engages in the sale of electricity from the power plants. The Corporate & Development segment includes revenue generating projects. The company was founded by Daniel James Kunz and Douglas J. Glaspey on March 10, 2000 and is headquartered in Boise, ID.