Power plants in Sonoma County, California
22 operating power plants in Sonoma County, California, with 1,466 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Largest power plants in Sonoma County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | Geysers Unit 5-20Geothermal | 1,236 | 4,315 | – |
| 2 | Geothermal 1Geothermal | 110 | 338 | 35.1% |
| 3 | Geothermal 2Geothermal | 55 | 322 | 33.4% |
| 4 | Aidlin Geothermal Power PlantGeothermal | 25 | 82.4 | 37.6% |
| 5 | Keysight - Santa RosaNatural gas | 4.5 | 34.5 | 87.4% |
| 6 | Laguna Water Reclamation FacilityBiomass | 4.4 | 9.4 | 24.3% |
| 7 | Ellis Creek SolarSolar | 4.0 | 1.3 | – |
| 8 | Sonoma Central Landfill Phase ILandfill gas | 3.2 | 0.6 | 2.1% |
| 9 | Sonoma Central Landfill Phase IILandfill gas | 3.2 | 1.8 | 6.3% |
| 10 | Dissigno Healdsburg FPV, LLCSolar | 3.0 | 5.6 | 21.2% |
| 11 | Warm Springs Hydro ProjectHydro | 2.7 | 0.0 | – |
| 12 | Bodega Avenue Solar LLCSolar | 2.0 | 3.8 | 21.6% |
| 13 | Sonoma Central Landfill Phase IIILandfill gas | 1.6 | 0.0 | – |
| 14 | Cloverdale Solar ISolar | 1.5 | 1.5 | 11.1% |
| 15 | Windsor Floating SolarSolar | 1.5 | 2.6 | 19.5% |
| 16 | BeringerSolar | 1.4 | 1.6 | 12.7% |
| 17 | Sutter Santa Rosa SolarSolar | 1.3 | 2.1 | 18.8% |
| 18 | ASTISolar | 1.2 | 1.2 | 11.6% |
| 19 | Santa Rosa Junior College Petaluma SolarSolar | 1.2 | 1.7 | 15.9% |
| 20 | Cloverdale Solar CenterSolar | 1.0 | 1.8 | 20.5% |
| 21 | Stage Gulch SolarSolar | 1.0 | 1.5 | 17.2% |
| 22 | Lavio SolarSolar | 1.0 | 1.9 | 22.0% |
MW is the nameplate capacity of operating generators and batteries. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources
More power plant lists for California
Largest power plants in California50 plants · 40,214 MWSolar farms in California974 plants · 25,484 MWWind farms in California110 plants · 6,461 MWBattery storage projects in California272 projects · 16,093 MWNatural gas power plants in California291 plants · 39,653 MWHydroelectric power plants in California209 plants · 9,614 MW
Other counties in California
Kern County257 plants · 18,580 MWLos Angeles County238 plants · 13,695 MWSan Bernardino County123 plants · 7,037 MWRiverside County119 plants · 11,454 MWSan Diego County103 plants · 5,002 MWFresno County100 plants · 5,685 MWImperial County71 plants · 4,430 MWSacramento County62 plants · 1,746 MWTulare County60 plants · 1,393 MW