Power plants in San Luis Obispo County, California
17 operating power plants in San Luis Obispo County, California, with 3,562 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Largest power plants in San Luis Obispo County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | Diablo CanyonNuclear | 2,323 | 17,558 | 86.3% |
| 2 | Topaz Solar FarmSolar | 586 | 1,019 | 19.8% |
| 3 | California Valley Solar RanchSolar | 250 | 559 | 25.5% |
| 4 | CA Flats Solar 150, LLCSolar | 150 | 305 | 23.2% |
| 5 | CA Flats Solar 130, LLCSolar | 130 | 262 | 23.0% |
| 6 | CaballeroBattery storage | 100 | −17.1* | – |
| 7 | Stenner Creek SolarSolar | 4.5 | 9.6 | 24.3% |
| 8 | Nacimiento Hydro ProjectHydro | 4.4 | 11.8 | 30.5% |
| 9 | Paso Robles - Municipal AirportSolar | 3.0 | 7.6 | 28.8% |
| 10 | CA-DGS-California Men's ColonySolar | 2.2 | 4.5 | 23.5% |
| 11 | Firestone Walker Brewery - Phase 1Solar | 1.6 | 3.9 | 28.0% |
| 12 | Cold Canyon 1Landfill gas | 1.5 | 10.6 | 80.4% |
| 13 | Vintner SolarSolar | 1.5 | 4.0 | 30.3% |
| 14 | Camp San Luis ObispoSolar | 1.2 | 2.4 | 22.7% |
| 15 | Meridian VineyardsSolar | 1.1 | 1.1 | 11.6% |
| 16 | Atascadero State HospitalSolar | 1.1 | 2.8 | 29.4% |
| 17 | Sutter Home Winery TCCSolar | 1.1 | 1.7 | 17.3% |
* Fewer than 12 months of 2025 reported, so the total is partial.
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