GEOTHERMAL 2

How GEOTHERMAL 2 compares

With 110 MW of capacity, GEOTHERMAL 2 ranks 150th among the 874 operating power plants Bywatts maps in California and 3rd of the 24 operating Geothermal plants in the state. It accounts for about 4.2% of California's operating Geothermal capacity and 0.2% of all operating capacity in the state. Nationally it is the 3rd-largest of the 34 operating Geothermal plants in the database. Commissioned in 1985, it is older than 75% of the 859 operating California plants with a recorded commissioning year. Its operator, NORTHERN CALIFORNIA POWER AGNY, runs 7 operating plants in California totaling 605 MW. It shares Sonoma County with 7 other operating plants, including GEYSERS UNIT 5-20 and GEOTHERMAL 1.

EIA-860 lists 2 generators at the site with 110 MW of nameplate capacity, all geothermal technology. Net generation was 363 GWh in 2024 (a 38% capacity factor), up 32% from 2022. Its generators came online between 1985 and 1986.

Grid neighborhood

The nearest named substation is NCPA 3&4 (230 kV), under 0.1 miles away; the closest transmission line found within 10 miles is a 230 kV line owned by PACIFIC GAS & ELECTRIC COMPANY, under 0.1 miles away. Another 11 operating power plants totaling 1,727 MW sit within 25 miles; the largest is GEYSERS UNIT 5-20 (1,273 MW, Geothermal).

Computed by Bywatts from HIFLD power plant, substation and transmission line records and EIA-860/923 survey data; distances are straight-line. Sources and methodology