California Independent System Operator
Balancing Authority Summary Information
California Independent System Operator is ranked #7 out of 65 balancing authorities in terms of total annual electricity generation.
| Balancing Authority | California Independent System Operator |
|---|---|
| States | Arizona California Nevada |
| Last Update | Dec 2025 |
| Annual Generation | 187.8 TWh |
| Power Plants | 2,075 |
| Utilities | 965 |
| Ranked #7 out of 65 in terms of net annual generation | |
| Ranked #7 out of 53 in terms of annual generation from natural gas | |
| Power Plant Types | Natural Gas | 43% Solar | 26.5% Water | 11.2% Wind | 10.7% Nuclear | 9.4% |
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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 |
|---|---|---|---|---|---|---|
| AT&T Anaheim | Bloom Energy | Anaheim, CA | 10 GWh | Aug 2016 | Dec 2024 | Natural Gas |
| ASTI | Perpetual Energy Systems | Cloverdale, CA | 1 GWh | Jan 2009 | Dec 2024 | Solar |
| Aspiration G | AES Distributed Energy | Cantua Creek, CA | 21 GWh | Aug 2017 | Dec 2024 | Solar |
| Arrache 8083 | CD US Solar MT 2 LLC | Palmdale, CA | 3 GWh | Aug 2013 | Dec 2024 | Solar |
| Arrache 4013 | CD US Solar MT 2 LLC | Palmdale, CA | 3 GWh | Jul 2013 | Dec 2024 | Solar |
| Arrache 4006 | CD US Solar MT 2 LLC | Palmdale, CA | 2 GWh | Jul 2013 | Dec 2024 | Solar |
| Arlington Energy Center III | Arlington Energy Center III | Blythe, CA | 321 GWh | Jul 2022 | Sep 2025 | Solar |
| Arlington Energy Center II | Arlington Energy Center II | Blythe, CA | 633 GWh | Feb 2022 | Sep 2025 | Solar |
| Arica Solar | Arica Solar, LLC | Desert Center, CA | 719 GWh | Feb 2024 | Sep 2025 | Solar |
| Argus Cogen Plant | Searles Valley Minerals Operations Inc. | Trona, CA | 252 GWh | Nov 1947 | Sep 2025 | Bituminous Coal : 94.8% Natural Gas : 5.2% |
| Aquamarine | Aquamarine Westside LLC | Lemoore, CA | 679 GWh | Aug 2021 | Sep 2025 | Solar |
| Apple Campus 2 PV | Apple, Inc | Cupertino, CA | 17 GWh | May 2017 | Dec 2024 | Solar |
| Apple Campus 2 Fuel Cell | Apple, Inc | Cupertino, CA | 30 GWh | May 2017 | Dec 2024 | Landfill Gas |
| APP Prune A-D | Bloom Energy | Cupertino, CA | 27 GWh | Apr 2017 | Dec 2023 | Natural Gas |
| AP North Lake I, LP | AP North Lake I, LP | Hemet, CA | 40 GWh | Jul 2015 | Dec 2024 | Solar |
| Antelope Expansion 3B | AES Distributed Energy | Lancaster, CA | 11 GWh | May 2021 | Dec 2024 | Solar |
| Antelope Expansion 3A | AES Distributed Energy | Lancaster, CA | 32 GWh | May 2021 | Dec 2024 | Solar |
| Antelope Expansion 2 | AES Distributed Energy | Lancaster, CA | 271 GWh | Nov 2018 | Sep 2025 | Solar |
| Antelope Expansion 1B | AES Distributed Energy | Lancaster, CA | 45 GWh | Oct 2022 | Dec 2024 | Solar |
| Antelope DSR 3 | AES Distributed Energy | Lancaster, CA | 58 GWh | Aug 2019 | Dec 2024 | Solar |
| Antelope DSR 2 | AES Distributed Energy | Lancaster, CA | 12 GWh | Nov 2016 | Dec 2024 | Solar |
| Antelope DSR 1 | AES Distributed Energy | Lancaster, CA | 132 GWh | Nov 2016 | Sep 2025 | Solar |
| Antelope Big Sky Ranch | AES Distributed Energy | Lancaster, CA | 54 GWh | Jul 2016 | Dec 2024 | Solar |
| Anheuser Busch - Fairfield | Bloom Energy | Fairfield, CA | 21 GWh | Nov 2022 | Dec 2024 | Natural Gas |
| Anheuser-Busch #2 | Foundation HA Energy Generation, LLC | Fairfield, CA | 4 GWh | Oct 2014 | Sep 2025 | Wind |
| Angels | Utica Water & Power Authority | Angels Camp, CA | 6 GWh | Dec 1939 | Dec 2024 | Water |
| Anaheim Solar Energy Plant | Anaheim Public Utilities | Anaheim, CA | 3 GWh | Jul 2014 | Dec 2024 | Solar |
| American Kings Solar, LLC | MN8 Energy LLC | Lemoore, CA | 334 GWh | Nov 2020 | Sep 2025 | Solar |
| American Canyon Solar | RP Napa Solar 1, LLC | American Canyon, CA | 7 GWh | Aug 2019 | Dec 2024 | Solar |
| Ameresco Vasco Road | Ameresco Vasco Road, LLC | Livermore, CA | 32 GWh | Feb 2013 | Dec 2024 | Landfill Gas |
| Ameresco Santa Cruz Energy | AMERESCO Santa Cruz Energy LLC | Watsonville, CA | 16 GWh | Dec 2005 | Dec 2024 | Landfill Gas |
| Ameresco San Joaquin | Ameresco San Joaquin, LLC | Linden, CA | 31 GWh | Mar 2014 | Dec 2024 | Landfill Gas |
| Ameresco Ox Mountain | AMERESCO Ox Mountain Energy LLC | Half Moon Bay, CA | 81 GWh | Nov 2008 | Sep 2025 | Landfill Gas |
| Ameresco Keller Canyon | AMERESCO Keller Canyon LLC | Bay Point, CA | 19 GWh | Jun 2009 | Dec 2024 | Landfill Gas |
| Ameresco Johnson Canyon | Ameresco Johnson Canyon LLC | Gonzales, CA | 9 GWh | Apr 2013 | Dec 2024 | Landfill Gas |
| Ameresco Forward | Ameresco Forward, LLC | Manteca, CA | 32 GWh | Jan 2014 | Dec 2024 | Landfill Gas |
| Ameresco Chiquita Canyon | AMERESCO Chiquita Canyon LLC | Castaic, CA | 2 GWh | Oct 2010 | Dec 2024 | Landfill Gas |
| Ameresco Butte County | Ameresco Butte County LLC | Paradise, CA | 17 GWh | Jan 2013 | Dec 2024 | Landfill Gas |
| Amazon - Stockton - Roof (SCK1) - (CA) | Forefront Power, LLC | Stockton, CA | 4 GWh | Feb 2023 | Dec 2024 | Solar |
| Amazon SAN3 Solar Project | Solar Star Prime 4 LLC | San Diego, CA | 6 GWh | Apr 2024 | Dec 2024 | Solar |
| Amazon PSP1 | Greenbacker Renewable Energy Corporation | Beaumont, CA | 7 GWh | Sep 2021 | Dec 2024 | Solar |
| Amazon Bakersfield 1 Solar Project | Solar Star Prime 3, LLC | Bakersfiled, CA | 8 GWh | Dec 2023 | Dec 2024 | Solar |
| AM Wind Repower LLC | Brookfield Renewable Trading and Marketing LP | Whitewater, CA | 67 GWh | - | Sep 2025 | Wind |
| Alticor Inc - Solar Project | MN8 Energy LLC | Buena Park, CA | 2 GWh | Nov 2017 | Dec 2024 | Solar |
| Altamont Gas Recovery | WM Renewable Energy LLC | Livermore, CA | 39 GWh | Feb 1969 | Dec 2024 | Landfill Gas |
| AltaGas Ripon Energy Inc. | AltaGas Ripon Energy Inc. | Ripon, CA | 2 GWh | Mar 1988 | Sep 2025 | Natural Gas |
| Alta Wind XI | Alta Wind XI, LLC | Mojave, CA | 269 GWh | Dec 2013 | Dec 2024 | Wind |
| Alta Wind X | Alta Wind X, LLC | Mojave, CA | 379 GWh | Dec 2013 | Dec 2024 | Wind |
| Alta Wind VIII | Nextera Energy Resources | Mojave, CA | 222 GWh | Dec 2011 | Dec 2024 | Wind |
| Alta Wind Energy Center V | Alta Wind V, LLC | Mojave, CA | 288 GWh | Mar 2011 | Dec 2024 | Wind |
| Alta Wind Energy Center IV | Alta Wind IV, LLC | Mojave, CA | 193 GWh | Mar 2011 | Dec 2024 | Wind |
| Alta Wind Energy Center III | Alta Wind III, LLC | Mojave, CA | 363 GWh | Jan 2011 | Dec 2024 | Wind |
| Alta Wind Energy Center II | Alta Wind II, LLC | Mojave, CA | 365 GWh | Dec 2010 | Dec 2024 | Wind |
| Alta Wind Energy Center I | Alta Wind I, LLC | Mojave, CA | 435 GWh | Dec 2010 | Dec 2024 | Wind |
| Alta Powerhouse | Pacific Gas & Electric Co. | Alta, CA | 1 GWh | Oct 1902 | Dec 2024 | Water |
| Alpine Solar | Alpine BESS LLC | Lancaster, CA | 119 GWh | Jan 2013 | Dec 2024 | Solar |
| Alpaugh North | Consolidated Edison Development Inc. | Alpaugh, CA | 31 GWh | Nov 2012 | Dec 2024 | Solar |
| Alpaugh 50 | Consolidated Edison Development Inc. | Alpaugh, CA | 85 GWh | Nov 2012 | Dec 2024 | Solar |
| Almond | Westlands Almond LLC | Lemoore, CA | 39 GWh | Aug 2023 | Dec 2024 | Solar |
| Algonquin SKIC20 Solar LLC | Algonquin Power Co | Taft, CA | 41 GWh | Apr 2015 | Dec 2024 | Solar |
| Algonquin SKIC 10 Solar, LLC | Algonquin Power Co | Taft, CA | 15 GWh | Dec 2016 | Dec 2024 | Solar |
| Algonquin Power Sanger LLC | Algonquin Power Sanger LLC | Sanger, CA | 5 GWh | Nov 2007 | Sep 2025 | Natural Gas |
| Alamo Solar | Onward Energy | Oro Grande, CA | 48 GWh | Apr 2015 | Dec 2024 | Solar |
| Alamo | California Dept. of Water Resources | Pearblossom, CA | 56 GWh | Jun 1986 | Dec 2024 | Water |
| Alameda | Northern California Power Agny | Alameda, CA | 3 GWh | Apr 1986 | Dec 2024 | Natural Gas |
| Aidlin Geothermal Power Plant | Geysers Power Co LLC | Middletown, CA | 81 GWh | Apr 1989 | Dec 2024 | Geothermal |
| Agua Mansa Power Plant | E I Colton LLC | Colton, CA | 9 GWh | May 2003 | Dec 2024 | Natural Gas |
| Agua Caliente Solar Project | Agua Caliente Solar | Dateland, AZ | 548 GWh | Apr 2012 | Sep 2025 | Solar |
| AGT000 Stevens Creek Fuel Cell | 2016 ESA Project Company, LLC | Santa Clara, CA | 8 GWh | Aug 2018 | Dec 2024 | Natural Gas |
| Agriculture Capital - Legacy Packing | Distributed Solar Development, LLC | Dinuba, CA | 4 GWh | Nov 2022 | Dec 2024 | Solar |
| Agnews Power Plant | OLS Energy-Agnews Inc. | San Jose, CA | 10 GWh | Oct 1990 | Dec 2024 | Natural Gas |
| AES Redondo Beach LLC | AES Redondo Beach LLC | Redondo Beach, CA | 256 GWh | Sep 1954 | Dec 2023 | Natural Gas |
| AES Huntington Beach LLC | AES Huntington Beach LLC | Huntington Beach, CA | 8 GWh | May 1958 | Aug 2025 | Natural Gas |
| AES Huntington Beach Energy Project | AES Huntington Beach Energy, LLC | Huntington Beach, CA | 2 TWh | Jan 2020 | Sep 2025 | Natural Gas |
| AES Alamitos LLC | AES Alamitos LLC | Long Beach, CA | 38 GWh | Aug 1956 | Aug 2025 | Natural Gas |
| AES Alamitos Energy Center | AES Alamitos Energy, LLC | Long Beach, CA | 2 TWh | Jan 2020 | Sep 2025 | Natural Gas |
| Aera San Ardo Cogen Facility | Aera Energy LLC-San Ardo | San Ardo, CA | 17 GWh | Jun 1989 | Dec 2024 | Natural Gas |
| Adobe Solar | Southern Power Co | Arvin, CA | 40 GWh | Apr 2014 | Dec 2024 | Solar |
| Adera Solar | AES Distributed Energy | Chowchilla, CA | 17 GWh | Nov 2015 | Dec 2024 | Solar |
| Adelanto Solar, LLC | Adelanto Solar, LLC | Adelanto, CA | 53 GWh | Aug 2015 | Dec 2024 | Solar |
| Adelanto Solar II, LLC | Adelanto Solar II, LLC | Adelanto, CA | 14 GWh | Jun 2015 | Dec 2024 | Solar |
| Abel Road Bioenergy | ACC Renewable Resources | Williams, CA | 22 GWh | Jun 2022 | Dec 2024 | Agricultural By-Products |
| ABEC Bidart-Old River LLC | ABEC Bidart-Old River LLC | Bakersfield, CA | 16 GWh | Nov 2013 | Dec 2024 | Other Biomass Gas |
| ABEC #4 dba CE&S Dairy | ABEC #4 LLC | Bakersfield, CA | 8 GWh | Jan 2018 | Dec 2024 | Other Biomass Gas |
| ABEC #3 dba Lakeview Dairy | ABEC #3 LLC | Bakersfield, CA | 6 GWh | Jan 2018 | Dec 2024 | Other Biomass Gas |
| ABEC #2 dba West-Star Dairy | ABEC #2 LLC | Buttonwillow, CA | 8 GWh | Jan 2018 | Dec 2024 | Other Biomass Gas |
| A G Wishon | Pacific Gas & Electric Co. | North Fork, CA | 22 GWh | Aug 1910 | Dec 2024 | Water |
Surrounding Balancing Authorities
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #26 | Arizona Public Service Company | 23.9 TWh | 92 |
| #54 | Arlington Valley, LLC | 3.4 TWh | 1 |
| #36 | Balancing Authority of Northern California | 14.7 TWh | 87 |
| #47 | Imperial Irrigation District | 6.4 TWh | 66 |
| #29 | Los Angeles Department of Water and Power | 18.9 TWh | 124 |
| #22 | Nevada Power Company | 37.2 TWh | 139 |
| #61 | New Harquahala Generating Company, LLC | 665.5 GWh | 1 |
| #19 | Salt River Project Agricultural Improvement and Power District | 59.9 TWh | 48 |
| #57 | Turlock Irrigation District | 2.1 TWh | 11 |
| #39 | Western Area Power Administration - Desert Southwest Region | 9.7 TWh | 33 |
Balancing Authorities with Similar Net Generation
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #3 | Electric Reliability Council of Texas, Inc. | 484.5 TWh | 1,313 |
| #5 | Southwest Power Pool | 300.8 TWh | 835 |
| #6 | Southern Company Services, Inc. - Trans | 251.3 TWh | 417 |
| #7 | California Independent System Operator | 187.8 TWh | 2,075 |
| #9 | Tennessee Valley Authority | 161.9 TWh | 204 |
| #10 | Florida Power & Light Co. | 149.3 TWh | 187 |
| #12 | New York Independent System Operator | 132.0 TWh | 1,211 |
| #13 | Duke Energy Carolinas | 112.3 TWh | 565 |
| #15 | ISO New England | 106.2 TWh | 1,577 |
| #16 | Bonneville Power Administration | 80.9 TWh | 163 |