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United States › Power plants › Geothermal plants › California

GEOTHERMAL PLANTS

Geothermal 1

Geothermal 1 is a 110 MW operating geothermal plant in Sonoma County, California, operated by Northern California Power Agny.

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

Open in Google MapsMore geothermal plants in California

Generators

Each generating unit EIA lists at this plant.

UnitTechnologyCapacityStatusOnlineRetired / planned retirement
1Geothermal55 MW OperatingJan 1983
2Geothermal55 MW OperatingJan 1983

Plant details

Operator
Northern California Power Agny
Location
Sonoma County, California
Balancing authority
CISO
Sector
Electric Utility
Capacity
Operating: 110 MW
First unit online
Jan 1983
EIA plant ID
7368

Location

38.7520, -122.7195

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