Imperial Valley (United States)
The project consists of 10 generating plants in the Salton Sea Known Geothermal Resource Area in Southern California's Imperial Valley. The plants produce electricity solely from naturally occurring geothermal steam. Geothermal production wells tap into superheated water reservoirs thousands of feet beneath the Earth's surface to release tremendous pressure, caused by the hot water, which rushes to the surface. There, steam is separated and used to drive turbines to generate electricity.
Eight of the Imperial Valley facilities – Vulcan, Hoch, Elmore, Leathers and
Salton Sea 1, 2, 3 and 4 – are under contract to sell power to Southern California Edison Company under 30-year power purchase agreements. Salton Sea 5 and the CE Turbo plant sell virtually all of their power to third parties. The combined capacity at Imperial Valley is
approximately 327 net megawatts (nominal).
The existing Imperial Valley power generation facilities are indirectly owned by CE Generation, LLC (CE Gen), a limited liability company, 50 percent of which is owned by MidAmerican Renewables, LLC, and are operated by CalEnergy Operating Corporation, an indirect subsidiary of CE Gen.
Calipatria, California, U.S.
Date of Commercial Operation:
Approximately 327 net MW (nominal)
Southern California Edison Company (Elmore, Leathers, Vulcan, Del Ranch and Salton Sea Units 1 - 4)
Interconnection and Firm
Transmission lines, owned and operated by Imperial Irrigation District (IID) are used to interconnect each of the operating power plants, except Salton Sea 1, which delivers power directly to SCE, using the IID transmission lines