World Power Plants

Sonoma California Geothermal78 MW Geothermal

GeothermalRenewable

Sonoma California Geothermal is a 78 MW geothermal power plant in the United States, operated by Geysers Power Co LLC since 1984. Ranked #12 of 65 geothermal plants in the United States. Its 78 MW represents 2.01% of the United States' total geothermal capacity of 3,889 MW. The largest geothermal plant in the United States is Geysers Unit 5-20 at 1,163 MW, making Sonoma California Geothermal 14.9 times smaller. Nearby plants include Geysers Unit 5-20 (1,163 MW, Geothermal), Calistoga Power Plant (176.4 MW, Geothermal), and Geothermal 2 (110 MW, Geothermal). The facility is located in California, approximately 30 km northwest of Santa Rosa.

Capacity
78 MW
Commissioning Year
1984

42 years old

Owner
Geysers Power Co LLC
Location
38.7903°, -122.7559°

United States of America, North America

Context & rankings
  • 2,472. largest of 10,098 plants in United States of America
  • #11,306 worldwide by installed capacity
  • #63 of 215 Geothermal plants worldwide
  • 0.01% of the installed capacity of United States of America
Age & fleet comparison

42 years in operation

Geothermal fleet average: 26.9 years

Operator portfolio

Geysers Power Co LLC operates 4 plants totalling 1,442 MW

Regional density

73 plants within 100 km, 3,947 MW combined

Nearest plant: Calistoga Power Plant (1.1 km)

Location

Coordinates:: 38.790300, -122.755900
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Carbon Footprint

Zero Direct Emissions

Sonoma California Geothermal is a geothermal power plant producing approximately 547 GWh of clean electricity per year with zero direct CO₂ emissions during operation.

Lifecycle emissions: ~38 g CO₂/kWh (manufacturing, transport, decommissioning)

Technical Details

Primary Fuel Type
Geothermal
Energy Source
Renewable
Country
United States of America
Continent
North America
Data Source
Global Power Plant Database

United States of AmericaEnergy Profile

10,098
Total Plants
1420.7 GW
Total Capacity
GasCoalNuclearWind
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