Largest power plants in California
The 50 largest power plants in California by nameplate capacity, from EIA-860M for August 2026, with 2025 net generation from EIA-923.
Top 50 by nameplate capacity
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | Diablo CanyonSan Luis Obispo County · Nuclear | 2,323 | 17,558 | 86.3% |
| 2 | Dynegy Moss Landing Power Plant HybridMonterey County · Natural gas and battery storage | 1,848 | 2,068 | – |
| 3 | HaynesLos Angeles County · Natural gas | 1,739 | 1,652 | 10.8% |
| 4 | CastaicLos Angeles County · Pumped storage | 1,682 | 159 | – |
| 5 | Ormond BeachVentura County · Natural gas | 1,612 | 18.8 | 0.1% |
| 6 | Geysers Unit 5-20Sonoma County · Geothermal | 1,236 | 4,315 | – |
| 7 | La Paloma Generating PlantKern County · Natural gas | 1,156 | 1,706 | 16.9% |
| 8 | AES Alamitos LLCLos Angeles County · Natural gas | 1,115 | 28.2 | 0.3% |
| 9 | Helms Pumped StorageFresno County · Pumped storage | 1,053 | −467 | – |
| 10 | Mountainview Generating StationSan Bernardino County · Natural gas | 1,037 | 1,372 | 15.1% |
| 11 | Bellefield Solar and Energy Storage FarmKern County · Solar and battery storage | 1,000 | 57.9* | – |
| 12 | High Desert Power PlantSan Bernardino County · Natural gas | 960 | 3,334 | 39.6% |
| 13 | Delta Energy CenterContra Costa County · Natural gas | 944 | 4,138 | 50.1% |
| 14 | ScattergoodLos Angeles County · Natural gas | 876 | 1,665 | 21.7% |
| 15 | Marsh Landing Generating StationContra Costa County · Natural gas | 828 | 15.7 | 0.2% |
| 16 | Sentinel Energy Center, LLCRiverside County · Natural gas | 800 | 140 | 2.0% |
| 17 | Pastoria Energy Facility, LLCKern County · Natural gas | 779 | 3,620 | 53.1% |
| 18 | ShastaShasta County · Hydro | 714 | 2,348 | 37.5% |
| 19 | Colusa Generating StationColusa County · Natural gas | 712 | 2,576 | 41.3% |
| 20 | Otay Mesa Generating ProjectSan Diego County · Natural gas | 711 | 1,630 | 26.2% |
| 21 | AES Huntington Beach Energy ProjectOrange County · Natural gas | 699 | 1,878 | 30.7% |
| 22 | Valley (CA)Los Angeles County · Natural gas | 691 | 1,040 | 17.2% |
| 23 | Sunrise Power LLCKern County · Natural gas | 685 | 1,809 | – |
| 24 | Menifee Power BankRiverside County · Battery storage | 680 | −117 | – |
| 25 | Los Medanos Energy CenterContra Costa County · Natural gas | 678 | 2,486 | 41.8% |
| 26 | AES Alamitos Energy CenterLos Angeles County · Natural gas | 678 | 1,480 | 24.9% |
| 27 | Carlsbad Energy CenterSan Diego County · Natural gas | 659 | 216 | 3.7% |
| 28 | Russell City Energy CenterAlameda County · Natural gas | 655 | 1,575 | 27.4% |
| 29 | Edward C HyattButte County · Hydro and pumped storage | 644 | 1,953 | – |
| 30 | Sutter Energy CenterSutter County · Natural gas | 636 | 1,776 | 31.9% |
| 31 | Metcalf Energy CenterSanta Clara County · Natural gas | 635 | 2,334 | 42.0% |
| 32 | Elk Hills Power LLCKern County · Natural gas | 623 | 3,131 | 57.4% |
| 33 | Gateway Generating StationContra Costa County · Natural gas | 620 | 2,912 | 53.6% |
| 34 | Blythe Energy IncRiverside County · Natural gas | 591 | 315 | 6.1% |
| 35 | Topaz Solar FarmSan Luis Obispo County · Solar | 586 | 1,019 | 19.8% |
| 36 | Palomar EnergySan Diego County · Natural gas | 559 | 1,470 | 30.0% |
| 37 | Cosumnes Power PlantSacramento County · Natural gas | 557 | 3,543 | 72.6% |
| 38 | HarborLos Angeles County · Natural gas | 548 | 89.4 | 1.9% |
| 39 | Rexford Solar FarmTulare County · Solar and battery storage | 540 | 658* | – |
| 40 | El Segundo Energy Center LLCLos Angeles County · Natural gas | 537 | 45.1 | 1.0% |
| 41 | McCoy Solar Energy Project HybridRiverside County · Solar and battery storage | 501 | 639 | 29.1% |
| 42 | Walnut Creek Energy ParkLos Angeles County · Natural gas | 500 | 45.1 | 1.0% |
| 43 | Solar BlueKings County · Solar and battery storage | 475 | 652 | 31.6% |
| 44 | Eland Solar & Storage Center, Phase 1 HyKern County · Solar and battery storage | 460 | 684 | 26.0% |
| 45 | Eland Solar & Storage Center, Phase 2 HyKern County · Solar and battery storage | 458 | 260* | – |
| 46 | Desert QuartziteRiverside County · Solar and battery storage | 450 | 823 | 32.1% |
| 47 | Daggett 3San Bernardino County · Solar and battery storage | 449 | 866 | 33.6% |
| 48 | Slate HybridKings County · Solar and battery storage | 440 | 727 | 28.7% |
| 49 | Panoche Energy CenterFresno County · Natural gas | 432 | 760 | 20.1% |
| 50 | W R GianelliMerced County · Pumped storage | 424 | −152 | – |
* 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