California Independent System Operator
Balancing Authority Summary Information
California Independent System Operator is ranked #7 out of 64 balancing authorities in terms of total annual electricity generation.
| Balancing Authority | California Independent System Operator |
|---|---|
| States | Arizona California Nevada New Mexico |
| Last Update | Jul 2026 |
| Annual Generation | 169.4 TWh |
| Power Plants | 2,135 |
| Utilities | 988 |
| Ranked #7 out of 64 in terms of net annual generation | |
| Ranked #12 out of 53 in terms of annual generation from natural gas | |
| Power Plant Types | Natural Gas | 34% Solar | 30% Water | 12.4% Wind | 11.3% Nuclear | 11% |
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Daily Net Generation for California Independent System Operator for the past 3 Years
| Plant Name | Utility | Location | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|
| CSUF Trigeneration | California State University at Fullerton | Fullerton, CA | 35 GWh | Sep 2010 | May 2026 | Natural Gas : 81.4% Solar : 18.6% |
| RE Kent South, LLC | Onward Energy | Lemoore, CA | 36 GWh | Nov 2014 | Dec 2025 | Solar |
| Kern Oil & Refining Co | Kern Oil & Refining Co | Bakersfield, CA | 36 GWh | Sep 2002 | May 2026 | Natural Gas |
| Bishop Creek 4 | Southern California Edison Co | Bishop, CA | 36 GWh | Aug 1905 | Dec 2025 | Water |
| Bear Mountain Limited | WCAC Operating Company | Bakersfield, CA | 36 GWh | Mar 1995 | Mar 2026 | Natural Gas |
| White River Solar | RWE Clean Energy | Alpaugh, CA | 36 GWh | Jun 2013 | Dec 2025 | Solar |
| Mission College Blvd. Fuel Cell | 2016 ESA Project Company, LLC | Santa Clara, CA | 36 GWh | Nov 2017 | Dec 2025 | Natural Gas |
| Adobe Solar | Southern Power Co | Arvin, CA | 36 GWh | Apr 2014 | Dec 2025 | Solar |
| Rollins | Nevada Irrigation District | Colfax, CA | 37 GWh | Jul 1980 | Dec 2025 | Water |
| Kaiser - LA | Bloom Energy | Los Angeles, CA | 37 GWh | May 2020 | Dec 2025 | Natural Gas |
| Sunray 3 | Sunray Energy 3 LLC | Daggett, CA | 37 GWh | Nov 1985 | Dec 2025 | Solar |
| RE Old River One, LLC | Onward Energy | Bakersfield, CA | 38 GWh | Nov 2014 | Dec 2025 | Solar |
| Little Bear 4 | Little Bear Solar 4, LLC (Longroad) | Mendota, CA | 38 GWh | Nov 2020 | May 2026 | Solar |
| Kingbird A Solar LLC | Arevon Energy, Inc. | Rosamond, CA | 38 GWh | Mar 2016 | Dec 2025 | Solar |
| Walnut Creek Energy Park | Walnut Creek LLC | Industry, CA | 38 GWh | Mar 2013 | May 2026 | Natural Gas |
| CED Ducor 3 | RWE Clean Energy | Ducor, CA | 38 GWh | Nov 2016 | Dec 2025 | Solar |
| North Lancaster Ranch | AES Distributed Energy | Lancaster, CA | 39 GWh | Nov 2016 | Dec 2025 | Solar |
| Wildwood Solar II | Duke Energy Renewables Services | Wasco, CA | 39 GWh | Dec 2016 | Dec 2025 | Solar |
| Equinix Caspian Dr. Fuel Cell | 2016 ESA Project Company, LLC | Sunnyvale, CA | 39 GWh | Nov 2017 | Dec 2025 | Natural Gas |
| Altamont Gas Recovery | WM Renewable Energy LLC | Livermore, CA | 39 GWh | Feb 1969 | Dec 2025 | Landfill Gas |
| Solar Blythe LLC | NRG Solar Blythe | Blythe, CA | 39 GWh | Nov 2009 | Dec 2025 | Solar |
| Coalinga 25D Cogen | Chevron USA Inc | Coalinga, CA | 39 GWh | Sep 1986 | Dec 2025 | Natural Gas |
| Signal Hill West Unit | Signal Hill Petroleum, Inc | Signal Hill, CA | 39 GWh | Jun 2004 | May 2026 | Other Gas |
| Central Antelope Dry Ranch C | AES Distributed Energy | Lancaster, CA | 39 GWh | Apr 2016 | Dec 2025 | Solar |
| Kaiser Napa Valley Corporate Dr Fuel Cel | 2016 ESA Project Company, LLC | Napa, CA | 39 GWh | May 2017 | Dec 2025 | Natural Gas |
| Blackwell Solar Park | RWE Clean Energy | Lost Hills, CA | 39 GWh | Dec 2018 | Dec 2025 | Solar |
| Westlands Solar PV Farm | Boralex US Operations LLC | Huron, CA | 39 GWh | Jan 2014 | Dec 2025 | Solar |
| Vandenberg Solar Project | MN8 Energy LLC | Vandenberg Airforce B, CA | 39 GWh | Nov 2017 | Dec 2025 | Solar |
| MM San Diego-Miramar | MM San Diego Energy-Miramar | San Diego, CA | 40 GWh | Jun 1997 | Dec 2025 | Landfill Gas : 91.4% Other Biomass Gas : 8.6% |
| Antelope Expansion 3A | AES Distributed Energy | Lancaster, CA | 40 GWh | May 2021 | Dec 2025 | Solar |
| MM West Covina | MM West Covina Energy LLC | West Covina, CA | 40 GWh | May 1993 | Dec 2025 | Landfill Gas : 99.7% |
| Algonquin SKIC20 Solar LLC | Algonquin Power Co | Taft, CA | 41 GWh | Apr 2015 | Dec 2025 | Solar |
| C&H Sugar Plant | C&H Sugar Company Inc | Crockett, CA | 41 GWh | Sep 1957 | Apr 2026 | Purchased Steam |
| Bayshore Solar C, LLC | AES Distributed Energy | Lancaster, CA | 41 GWh | Nov 2017 | Dec 2025 | Solar |
| RE Adams East, LLC | Onward Energy | Fresno, CA | 41 GWh | Nov 2014 | Dec 2025 | Solar |
| CID Solar, LLC | Onward Energy | Corcoran, CA | 41 GWh | Nov 2014 | Dec 2025 | Solar |
| Solar Blythe 2 | NRG Solar Blythe II LLC | Blythe, CA | 41 GWh | Mar 2017 | Dec 2025 | Solar |
| Monticello Dam | Solano Irrigation District | Winters, CA | 41 GWh | May 1983 | Dec 2025 | Water |
| Plant No 1 Orange County | Orange County Sanitation Dist - (CA) | Fountain Valley, CA | 41 GWh | May 1993 | Dec 2025 | Other Biomass Gas : 81.6% Natural Gas : 18.4% |
| Shafter Solar LLC | Shafter Solar LLC | Bakersfield, CA | 41 GWh | Apr 2015 | Dec 2025 | Solar |
| Sierra Solar Greenworks | AES Distributed Energy | Lancaster, CA | 41 GWh | Oct 2015 | Dec 2025 | Solar |
| Wonderful Lost Hills | Wonderful Renewable Energy, LLC. | Lost Hills, CA | 41 GWh | Aug 2021 | Dec 2025 | Solar |
| RE Columbia Two, LLC | Onward Energy | Mojave, CA | 41 GWh | Nov 2014 | Dec 2025 | Solar |
| Bayshore Solar B, LLC | AES Distributed Energy | Lancaster, CA | 42 GWh | Nov 2017 | Dec 2025 | Solar |
| Coalinga Cogeneration Facility | Aera Energy LLC-Coalinga | Coalinga, CA | 42 GWh | May 1988 | Dec 2025 | Natural Gas |
| TPC Windfarms LLC | Terra-Gen Operating Co-Wind | Mojave, CA | 42 GWh | Nov 1986 | Dec 2025 | Wind |
| Sierra Pacific Sonora | Sierra Pacific Industries | Standard, CA | 43 GWh | Jan 2001 | Dec 2025 | Wood/Wood Waste Solids |
| Kettleman Solar -Centaurus | Boralex US Operations LLC | Kettleman City, CA | 43 GWh | Jun 2015 | Dec 2025 | Solar |
| Western Antelope Blue Sky Ranch A | AES Distributed Energy | Lancaster, CA | 43 GWh | Oct 2014 | Dec 2025 | Solar |
| Taft 26C Cogen | Chevron USA Inc | Taft, CA | 43 GWh | Jun 1982 | May 2026 | Natural Gas |
| Grizzly | City of Santa Clara - (CA) | N/A, CA | 43 GWh | Oct 1993 | Dec 2025 | Water |
| El Segundo Energy Center LLC | NRG Energy Services LLC | El Segundo, CA | 43 GWh | Jun 2013 | May 2026 | Natural Gas |
| Mammoth G1 | Ormat Nevada Inc | Mammoth lakes, CA | 44 GWh | Nov 1984 | Dec 2025 | Geothermal |
| Bayshore Solar A, LLC | AES Distributed Energy | Lancaster, CA | 44 GWh | Nov 2017 | Dec 2025 | Solar |
| RE Victor Phelan Solar One LLC | MN8 Energy LLC | Adelanto, CA | 45 GWh | Nov 2013 | Dec 2025 | Solar |
| AP North Lake I, LP | AP North Lake I, LP | Hemet, CA | 46 GWh | Jul 2015 | Dec 2025 | Solar |
| Hat Creek 2 | Pacific Gas & Electric Co. | Burney, CA | 46 GWh | Aug 1921 | Dec 2025 | Water |
| Mojave Siphon | California Dept. of Water Resources | Hesperia, CA | 46 GWh | Jul 1996 | Dec 2025 | Water |
| Jacumba Solar Farm | Invenergy Services LLC | Jacumba, CA | 46 GWh | Jun 2017 | Dec 2025 | Solar |
| Nicolis Solar PV Plant | Arevon Energy, Inc. | Delano, CA | 46 GWh | Aug 2016 | Dec 2025 | Solar |
| Antelope Expansion 1B | AES Distributed Energy | Lancaster, CA | 47 GWh | Oct 2022 | Dec 2025 | Solar |
| Corcoran Solar 2 | RWE Clean Energy | Corcoran, CA | 47 GWh | Apr 2015 | Dec 2025 | Solar |
| Pio Pico Energy Center | Pio Pico Energy Center LLC | San Diego, CA | 47 GWh | Oct 2016 | Dec 2025 | Natural Gas |
| Plant No 2 Orange County | Orange County Sanitation Dist - (CA) | Huntington Beach, CA | 47 GWh | May 1993 | Dec 2025 | Other Biomass Gas : 77.2% Natural Gas : 22.8% |
| Hayworth Solar | AES Distributed Energy | Edison, CA | 47 GWh | Nov 2015 | Dec 2025 | Solar |
| Paulsell | Crow Creek Solar, LLC | Crows Landing, CA | 47 GWh | May 2024 | May 2026 | Solar |
| RE Gaskell West 4 LLC | RE Gaskell West LLC | Rosamond, CA | 48 GWh | Apr 2023 | Dec 2025 | Solar |
| Tehachapi Wind Resource II | CalWind Resources Inc | Tehachapi, CA | 48 GWh | Dec 1996 | Dec 2025 | Wind |
| Frontier Solar LLC | Boralex US Operations LLC | Newman, CA | 48 GWh | May 2016 | Dec 2025 | Solar |
| Windhub Solar A LLC | EDP Renewables North America LLC | Mojave, CA | 48 GWh | Nov 2019 | Dec 2025 | Solar |
| RE Gaskell West 5 LLC | RE Gaskell West LLC | Rosamond, CA | 48 GWh | Apr 2023 | Dec 2025 | Solar |
| Corcoran Solar 3 | RWE Clean Energy | Corcoran, CA | 48 GWh | Jan 2016 | Dec 2025 | Solar |
| Wildwood Solar I, LLC | Duke Energy Renewables Services | Wasco, CA | 48 GWh | Jan 2015 | Dec 2025 | Solar |
| TA-Acacia, LLC | Onward Energy | Lancaster, CA | 48 GWh | Oct 2014 | Dec 2025 | Solar |
| Dome Project | Sentinel Peak Resources California, LLC | Fellows, CA | 48 GWh | Jul 1988 | Dec 2025 | Natural Gas |
| RE Rosamond Two LLC | MN8 Energy LLC | Rosamond, CA | 49 GWh | Dec 2013 | Dec 2025 | Solar |
| White River Solar 2 | RWE Clean Energy | Alpaugh, CA | 49 GWh | Aug 2014 | Dec 2025 | Solar |
| Almond | Westlands Almond LLC | Lemoore, CA | 49 GWh | Aug 2023 | Dec 2025 | Solar |
| Oro Loma | RWE Clean Energy | Oro Loma, CA | 49 GWh | Dec 2016 | Dec 2025 | Solar |
| Oasis Alta | Terra-Gen Operating Co-Wind | Mojave, CA | 49 GWh | Mar 2021 | Dec 2025 | Wind |
| Vega Solar | Vega Solar, LLC | Los Banos, CA | 49 GWh | Feb 2015 | Dec 2025 | Solar |
| Alamo Solar | Onward Energy | Oro Grande, CA | 49 GWh | Apr 2015 | Dec 2025 | Solar |
| Antelope Big Sky Ranch | AES Distributed Energy | Lancaster, CA | 50 GWh | Jul 2016 | Dec 2025 | Solar |
| Maricopa West Solar PV, LLC | Onward Energy | Taft, CA | 50 GWh | Nov 2015 | Dec 2025 | Solar |
| RE Kansas South LLC | RE Kansas South LLC | Lemoore, CA | 51 GWh | May 2013 | Dec 2025 | Solar |
| Pumpjack Solar I | Duke Energy Renewables Services | McKittrick, CA | 51 GWh | Dec 2014 | Dec 2025 | Solar |
| RE Gaskell West 3 LLC | RE Gaskell West LLC | Rosamond, CA | 51 GWh | Apr 2023 | Dec 2025 | Solar |
| French Meadows | Placer County Water Agency - (CA) | Foresthill, CA | 51 GWh | Sep 1966 | Dec 2024 | Water |
| RE Rosamond One LLC | MN8 Energy LLC | Rosamond, CA | 51 GWh | Dec 2013 | Dec 2025 | Solar |
| Cascade Solar | Cascade Solar LLC | Joshua Tree, CA | 51 GWh | Dec 2013 | Dec 2025 | Solar |
| CED Ducor 2 | RWE Clean Energy | Ducor, CA | 52 GWh | Nov 2016 | Dec 2025 | Solar |
| Rio Bravo Solar II LLC | Duke Energy Renewables Services | McKittrick, CA | 52 GWh | Nov 2016 | Dec 2025 | Solar |
| San Gorgonio Farms Wind Farm | San Gorgonio Farms Inc | Whitewater, CA | 52 GWh | Feb 1983 | Dec 2025 | Wind |
| CED Ducor 4 | RWE Clean Energy | Ducor, CA | 52 GWh | Nov 2016 | Dec 2025 | Solar |
| Atwell Island West Solar | RWE Clean Energy | Alpaugh, CA | 52 GWh | Apr 2015 | Dec 2025 | Solar |
| Rio Bravo Solar 1 LLC | Duke Energy Renewables Services | McKittrick, CA | 52 GWh | Nov 2016 | Dec 2025 | Solar |
| Western Antelope Blue Sky B | AES Distributed Energy | Lancaster, CA | 52 GWh | Nov 2016 | Dec 2025 | Solar |
| CED Ducor 1 | RWE Clean Energy | Ducor, CA | 52 GWh | Nov 2016 | Dec 2025 | Solar |
| SEPV Mojave West | AES Distributed Energy | Mojave, CA | 53 GWh | May 2016 | Dec 2025 | Solar |
| Portal Ridge Solar B, LLC | Portal Ridge Solar, LLC | Lancaster, CA | 53 GWh | Jan 2017 | Dec 2025 | Solar |
Surrounding Balancing Authorities
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #25 | Arizona Public Service Company | 25.2 TWh | 100 |
| #54 | Arlington Valley, LLC | 3.2 TWh | 1 |
| #38 | Balancing Authority of Northern California | 13.7 TWh | 90 |
| #49 | Imperial Irrigation District | 6.2 TWh | 66 |
| #29 | Los Angeles Department of Water and Power | 18.8 TWh | 131 |
| #22 | Nevada Power Company | 36.8 TWh | 143 |
| #51 | PUD No. 1 of Douglas County | 4.4 TWh | 4 |
| #19 | Salt River Project Agricultural Improvement and Power District | 60.3 TWh | 49 |
| #57 | Turlock Irrigation District | 1.9 TWh | 11 |
| #40 | Western Area Power Administration - Desert Southwest Region | 10.4 TWh | 34 |
Balancing Authorities with Similar Net Generation
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #3 | Electric Reliability Council of Texas, Inc. | 494.1 TWh | 1,471 |
| #5 | Southwest Power Pool | 306.8 TWh | 856 |
| #6 | Southern Company Services, Inc. - Trans | 253.5 TWh | 422 |
| #7 | California Independent System Operator | 169.4 TWh | 2,135 |
| #9 | Tennessee Valley Authority | 163.4 TWh | 207 |
| #10 | Florida Power & Light Co. | 152.2 TWh | 187 |
| #12 | New York Independent System Operator | 134.3 TWh | 1,299 |
| #13 | Duke Energy Carolinas | 112.6 TWh | 577 |
| #15 | ISO New England | 111.1 TWh | 1,629 |
| #16 | Bonneville Power Administration | 91.6 TWh | 167 |