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 | Oct 2026 |
| Annual Generation | 168.7 TWh |
| Power Plants | 2,170 |
| Utilities | 1,001 |
| Ranked #7 out of 64 in terms of net annual generation | |
| Ranked #14 out of 53 in terms of annual generation from natural gas | |
| Power Plant Types | Natural Gas | 32% Solar | 30.9% Water | 12.2% Wind | 11.8% Nuclear | 11.2% Coal | 0% |
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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 |
|---|---|---|---|---|---|---|
| Algonquin SKIC 10 Solar, LLC | Algonquin Power Co | Taft, CA | 16 GWh | Dec 2016 | Dec 2025 | Solar |
| Algonquin Power Sanger LLC | Clearlight Energy Sanger LLC | Sanger, CA | 3 GWh | Nov 2007 | Jul 2026 | Natural Gas |
| Alamo Solar | Onward Energy | Oro Grande, CA | 49 GWh | Apr 2015 | Dec 2025 | Solar |
| Alamo | California Dept. of Water Resources | Pearblossom, CA | 66 GWh | Jun 1986 | Dec 2025 | Water |
| Alameda | Northern California Power Agny | Alameda, CA | 3 GWh | Apr 1986 | Dec 2025 | Natural Gas |
| Aidlin Geothermal Power Plant | Geysers Power Co LLC | Middletown, CA | 82 GWh | Apr 1989 | Dec 2025 | Geothermal |
| Agua Mansa Power Plant | E I Colton LLC | Colton, CA | 4 GWh | May 2003 | Dec 2025 | Natural Gas |
| Agua Caliente Solar Project | Agua Caliente Solar | Dateland, AZ | 507 GWh | Apr 2012 | Jul 2026 | Solar |
| AGT000 Stevens Creek Fuel Cell | 2016 ESA Project Company, LLC | Santa Clara, CA | 17 GWh | Aug 2018 | Dec 2025 | Natural Gas |
| Agriculture Capital - Legacy Packing | Distributed Solar Development, LLC | Dinuba, CA | 4 GWh | Nov 2022 | Dec 2025 | Solar |
| Agnews Power Plant | OLS Energy-Agnews Inc. | San Jose, CA | 9 GWh | Oct 1990 | Dec 2025 | Natural Gas |
| AES Huntington Beach LLC | AES Huntington Beach LLC | Huntington Beach, CA | 5 GWh | May 1958 | Jun 2026 | Natural Gas |
| AES Huntington Beach Energy Project | AES Huntington Beach Energy, LLC | Huntington Beach, CA | 2 TWh | Jan 2020 | Jul 2026 | Natural Gas |
| AES Alamitos LLC | AES Alamitos LLC | Long Beach, CA | 13 GWh | Aug 1956 | Jun 2026 | Natural Gas |
| AES Alamitos Energy Center | AES Alamitos Energy, LLC | Long Beach, CA | 1 TWh | Jan 2020 | Jul 2026 | Natural Gas |
| Aera San Ardo Cogen Facility | Aera Energy LLC-San Ardo | San Ardo, CA | 20 GWh | Jun 1989 | Dec 2025 | Natural Gas |
| Adobe Solar | Southern Power Co | Arvin, CA | 36 GWh | Apr 2014 | Dec 2025 | Solar |
| Adera Solar | AES Distributed Energy | Chowchilla, CA | 33 GWh | Nov 2015 | Dec 2025 | Solar |
| Adelanto Solar, LLC | Adelanto Solar, LLC | Adelanto, CA | 59 GWh | Aug 2015 | Dec 2025 | Solar |
| Adelanto Solar II, LLC | Adelanto Solar II, LLC | Adelanto, CA | 18 GWh | Jun 2015 | Dec 2025 | Solar |
| Abel Road Bioenergy | ACC Renewable Resources | Williams, CA | 23 GWh | Jun 2022 | Dec 2025 | Agricultural By-Products |
| ABEC Bidart-Old River LLC | ABEC Bidart-Old River LLC | Bakersfield, CA | 16 GWh | Nov 2013 | Dec 2025 | Other Biomass Gas |
| ABEC #4 dba CE&S Dairy | ABEC #4 LLC | Bakersfield, CA | 7 GWh | Jan 2018 | Dec 2025 | Other Biomass Gas |
| ABEC #3 dba Lakeview Dairy | ABEC #3 LLC | Bakersfield, CA | 5 GWh | Jan 2018 | Dec 2025 | Other Biomass Gas |
| ABEC #2 dba West-Star Dairy | ABEC #2 LLC | Buttonwillow, CA | 8 GWh | Jan 2018 | Dec 2025 | Other Biomass Gas |
| A G Wishon | Pacific Gas & Electric Co. | North Fork, CA | 24 GWh | Aug 1910 | Oct 2025 | Water |
Surrounding Balancing Authorities
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #25 | Arizona Public Service Company | 25.8 TWh | 102 |
| #55 | Arlington Valley, LLC | 3.2 TWh | 1 |
| #38 | Balancing Authority of Northern California | 13.9 TWh | 91 |
| #49 | Imperial Irrigation District | 6.2 TWh | 66 |
| #29 | Los Angeles Department of Water and Power | 19.3 TWh | 132 |
| #22 | Nevada Power Company | 38.6 TWh | 143 |
| #51 | PUD No. 1 of Douglas County | 4.4 TWh | 5 |
| #19 | Salt River Project Agricultural Improvement and Power District | 60.5 TWh | 51 |
| #57 | Turlock Irrigation District | 1.9 TWh | 11 |
| #39 | Western Area Power Administration - Desert Southwest Region | 10.6 TWh | 36 |
Balancing Authorities with Similar Net Generation
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #3 | Electric Reliability Council of Texas, Inc. | 506.3 TWh | 1,487 |
| #5 | Southwest Power Pool | 314.5 TWh | 876 |
| #6 | Southern Company Services, Inc. - Trans | 259.3 TWh | 423 |
| #7 | California Independent System Operator | 168.7 TWh | 2,170 |
| #9 | Tennessee Valley Authority | 166.2 TWh | 209 |
| #10 | Florida Power & Light Co. | 153.0 TWh | 188 |
| #12 | New York Independent System Operator | 134.1 TWh | 1,334 |
| #13 | Duke Energy Carolinas | 113.4 TWh | 578 |
| #15 | ISO New England | 112.2 TWh | 1,667 |
| #16 | Bonneville Power Administration | 91.1 TWh | 170 |