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United States › Power plants › Geothermal plants › California

GEOTHERMAL PLANTS

Sonoma California Geothermal

Sonoma California Geothermal is a 78.0 MW operating geothermal plant in Lake County, California, operated by Geysers Power Co LLC.

Plant statusOperating
  1. Planning (completed)
  2. Consented (completed)
  3. Construction (completed)
  4. OperatingDec 1983 (current stage)
  5. Closed (not yet reached)

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Generators

Each generating unit EIA lists at this plant.

UnitTechnologyCapacityStatusOnlineRetired / planned retirement
1Geothermal78 MW OperatingDec 1983

Plant details

Operator
Geysers Power Co LLC
Location
Lake County, California
Balancing authority
CISO
Sector
IPP Non-CHP
Capacity
Operating: 78.0 MW
First unit online
Dec 1983
EIA plant ID
510

Location

38.7903, -122.7559

Nearby power plants

Source: U.S. Energy Information Administration, Form EIA-860M, September 2026. Planned dates are targets reported by the developer and often change. Report a problem