| State Rank | County | Net Generation (Past Year) | Power Plants |
|---|
| #22 | Alameda County, CA | 2.5 TWh | 46 |
| #35 | Amador County, CA | 659.7 GWh | 8 |
| #16 | Butte County, CA | 3.6 TWh | 25 |
| #37 | Calaveras County, CA | 542.0 GWh | 6 |
| #19 | Colusa County, CA | 2.9 TWh | 3 |
| #5 | Contra Costa County, CA | 13.6 TWh | 56 |
| #28 | El Dorado County, CA | 1.4 TWh | 15 |
| #8 | Fresno County, CA | 7.9 TWh | 109 |
| #54 | Glenn County, CA | 18.7 GWh | 2 |
| #39 | Humboldt County, CA | 469.7 GWh | 10 |
| #7 | Imperial County, CA | 9.7 TWh | 84 |
| #29 | Inyo County, CA | 1.2 TWh | 23 |
| #1 | Kern County, CA | 34.4 TWh | 311 |
| #14 | Kings County, CA | 4.1 TWh | 57 |
| #32 | Lake County, CA | 912.2 GWh | 10 |
| #41 | Lassen County, CA | 341.0 GWh | 9 |
| #2 | Los Angeles County, CA | 20.8 TWh | 307 |
| #31 | Madera County, CA | 1.0 TWh | 28 |
| #53 | Marin County, CA | 19.0 GWh | 3 |
| #43 | Mariposa County, CA | 299.7 GWh | 2 |
| #55 | Mendocino County, CA | 12.3 GWh | 5 |
| #38 | Merced County, CA | 475.2 GWh | 30 |
| #34 | Mono County, CA | 785.9 GWh | 9 |
| #15 | Monterey County, CA | 3.7 TWh | 29 |
| #51 | Napa County, CA | 49.2 GWh | 9 |
| #46 | Nevada County, CA | 207.0 GWh | 12 |
| #17 | Orange County, CA | 3.3 TWh | 59 |
| #24 | Placer County, CA | 2.0 TWh | 23 |
| #25 | Plumas County, CA | 2.0 TWh | 13 |
| #4 | Riverside County, CA | 14.5 TWh | 159 |
| #10 | Sacramento County, CA | 6.5 TWh | 64 |
| #40 | San Benito County, CA | 346.0 GWh | 6 |
| #6 | San Bernardino County, CA | 13.3 TWh | 203 |
| #12 | San Diego County, CA | 5.1 TWh | 150 |
| #48 | San Francisco County, CA | 84.6 GWh | 10 |
| #23 | San Joaquin County, CA | 2.3 TWh | 45 |
| #3 | San Luis Obispo County, CA | 20.7 TWh | 22 |
| #47 | San Mateo County, CA | 133.3 GWh | 10 |
| #42 | Santa Barbara County, CA | 334.0 GWh | 18 |
| #13 | Santa Clara County, CA | 4.4 TWh | 74 |
| #50 | Santa Cruz County, CA | 56.2 GWh | 6 |
| #9 | Shasta County, CA | 7.4 TWh | 46 |
| #52 | Sierra County, CA | 31.4 GWh | 3 |
| #44 | Siskiyou County, CA | 242.5 GWh | 8 |
| #18 | Solano County, CA | 3.1 TWh | 40 |
| #11 | Sonoma County, CA | 5.3 TWh | 26 |
| #21 | Stanislaus County, CA | 2.7 TWh | 25 |
| #26 | Sutter County, CA | 1.9 TWh | 8 |
| #49 | Tehama County, CA | 59.7 GWh | 7 |
| #36 | Trinity County, CA | 560.5 GWh | 5 |
| #30 | Tulare County, CA | 1.1 TWh | 68 |
| #20 | Tuolumne County, CA | 2.8 TWh | 23 |
| #33 | Ventura County, CA | 825.9 GWh | 32 |
| #45 | Yolo County, CA | 222.2 GWh | 15 |
| #27 | Yuba County, CA | 1.6 TWh | 5 |
Net Generation data is based on the last 12 months since May 2025
