| State Rank | County | Net Generation (Past Year) | Power Plants |
|---|
| #1 | Kern County, CA | 34.9 TWh | 333 |
| #3 | Los Angeles County, CA | 17.0 TWh | 325 |
| #6 | San Bernardino County, CA | 11.7 TWh | 212 |
| #4 | Riverside County, CA | 14.0 TWh | 165 |
| #12 | San Diego County, CA | 4.1 TWh | 156 |
| #8 | Fresno County, CA | 7.6 TWh | 128 |
| #7 | Imperial County, CA | 9.9 TWh | 84 |
| #14 | Santa Clara County, CA | 3.5 TWh | 76 |
| #26 | Tulare County, CA | 1.6 TWh | 72 |
| #10 | Sacramento County, CA | 5.6 TWh | 68 |
| #5 | Contra Costa County, CA | 12.5 TWh | 59 |
| #13 | Kings County, CA | 4.0 TWh | 59 |
| #21 | Orange County, CA | 2.5 TWh | 59 |
| #28 | San Joaquin County, CA | 1.5 TWh | 53 |
| #18 | Alameda County, CA | 2.7 TWh | 52 |
| #9 | Shasta County, CA | 6.9 TWh | 46 |
| #16 | Solano County, CA | 3.0 TWh | 41 |
| #38 | Merced County, CA | 454.6 GWh | 33 |
| #33 | Ventura County, CA | 715.4 GWh | 33 |
| #30 | Madera County, CA | 1.2 TWh | 29 |
| #20 | Monterey County, CA | 2.6 TWh | 29 |
| #24 | Placer County, CA | 1.8 TWh | 26 |
| #11 | Sonoma County, CA | 5.0 TWh | 26 |
| #19 | Stanislaus County, CA | 2.7 TWh | 25 |
| #15 | Butte County, CA | 3.5 TWh | 25 |
| #17 | Tuolumne County, CA | 2.9 TWh | 23 |
| #31 | Inyo County, CA | 1.1 TWh | 23 |
| #2 | San Luis Obispo County, CA | 20.4 TWh | 22 |
| #41 | Santa Barbara County, CA | 301.3 GWh | 18 |
| #45 | Yolo County, CA | 196.6 GWh | 15 |
| #29 | El Dorado County, CA | 1.5 TWh | 15 |
| #22 | Plumas County, CA | 2.2 TWh | 13 |
| #44 | Nevada County, CA | 225.7 GWh | 12 |
| #46 | San Mateo County, CA | 132.9 GWh | 11 |
| #50 | Napa County, CA | 51.2 GWh | 11 |
| #32 | Lake County, CA | 896.2 GWh | 10 |
| #39 | Humboldt County, CA | 433.1 GWh | 10 |
| #47 | San Francisco County, CA | 80.2 GWh | 10 |
| #40 | Lassen County, CA | 337.3 GWh | 9 |
| #35 | Mono County, CA | 597.8 GWh | 9 |
| #48 | Siskiyou County, CA | 77.3 GWh | 8 |
| #34 | Amador County, CA | 605.4 GWh | 8 |
| #25 | Sutter County, CA | 1.7 TWh | 8 |
| #51 | Tehama County, CA | 45.8 GWh | 7 |
| #49 | Santa Cruz County, CA | 60.7 GWh | 6 |
| #43 | San Benito County, CA | 260.3 GWh | 6 |
| #54 | Mendocino County, CA | 12.3 GWh | 6 |
| #36 | Calaveras County, CA | 512.8 GWh | 6 |
| #37 | Trinity County, CA | 490.7 GWh | 5 |
| #27 | Yuba County, CA | 1.5 TWh | 5 |
| #23 | Colusa County, CA | 2.1 TWh | 4 |
| #52 | Sierra County, CA | 28.9 GWh | 3 |
| #53 | Marin County, CA | 28.1 GWh | 3 |
| #42 | Mariposa County, CA | 272.7 GWh | 2 |
| #55 | Glenn County, CA | 12.1 GWh | 2 |
Net Generation data is based on the last 12 months since Dec 2025
