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 |
|---|---|---|---|---|---|---|
| Edom Hills Project 1 LLC | Edom Hills Project 1 LLC | Cathedral City, CA | 5 GWh | Aug 2008 | Jun 2025 | Wind |
| Walnut Unified School District Walnut HS | Tesla Inc. | Walnut, CA | 327 MWh | Jan 2020 | Jun 2025 | Solar |
| Verizon Comms Garage Top Solar Project | Verizon Communications | San Jose, CA | 348 MWh | Aug 2025 | Jun 2025 | Solar |
| Bishop Ranch - BR 15-DD | Alcosta Boulevard BR 15-DD Solar Project 2020, LLC | San Ramon, CA | 62 MWh | Feb 2025 | May 2025 | Solar |
| Temescal | Metropolitan Water District of S CA | Corona, CA | 14 GWh | Jun 1983 | Apr 2025 | Water |
| Corona | Metropolitan Water District of S CA | Corona, CA | 13 GWh | Jul 1983 | Apr 2025 | Water |
| San Gabriel Hydro Project | Los Angeles County-San Gabriel | Azusa, CA | 2 GWh | Nov 1987 | Apr 2025 | Water |
| Irwindale Brew Yard, LLC | Irwindale Brew Yard, LLC | Irwindale, CA | 517 MWh | Jan 2002 | Apr 2025 | Solar : 99.8% |
| B Braun Medical | B Braun Medical Inc | Irvine, CA | 29 GWh | Oct 1982 | Mar 2025 | Natural Gas |
| Frontier HS Solar Project | MN8 Energy LLC | Bakersfield, CA | 2 GWh | Nov 2018 | Mar 2025 | Solar |
| Univ of San Francisco Cogen | University of San Francisco | San Francisco, CA | 5 GWh | Aug 1987 | Dec 2024 | Natural Gas |
| Victory Garden (Tehachapi) | Wind Stream Operations LLC | Tehachapi, CA | 33 GWh | Nov 1981 | Dec 2024 | Wind |
| Covanta Stanislaus Energy | Covanta Stanislaus Inc | Crows Landing, CA | 62 GWh | Aug 1988 | Dec 2024 | Non-biogenic Municipal Solid Waste : 50.0% Biogenic Municipal Solid Waste : 40.9% Distillate Fuel Oil : 9.1% |
| Three Forks Water Power Project | Grizzly Mountain Ranch | Zenia, CA | 3 GWh | Nov 1984 | Dec 2024 | Water |
| Helzel & Schwarzhoff 86 | Wind Stream Operations LLC | Tehachapi, CA | 3 GWh | Nov 1986 | Dec 2024 | Wind |
| ZCO | Wind Stream Operations LLC | Tehachapi, CA | 1 GWh | Nov 1985 | Dec 2024 | Wind |
| Ameresco Chiquita Canyon | AMERESCO Chiquita Canyon LLC | Castaic, CA | 2 GWh | Oct 2010 | Dec 2024 | Landfill Gas |
| Improvement Dst No. 4 | Kern County Water Agency - (CA) | Bakersfield, CA | 12 MWh | Dec 2008 | Dec 2024 | Solar |
| Juniper Networks Sunnyvale | Bloom Energy | Sunnyvale, CA | 4 GWh | Nov 2012 | Dec 2024 | Natural Gas |
| Garnet Solar Generation Station I LLC | Garnet Solar Generation Station I LLC | Palm Springs, CA | 9 GWh | Nov 2014 | Dec 2024 | Solar |
| Westside Solar Power PV1 | Westside Assets LLC | Lemoore, CA | 5 GWh | Apr 2016 | Dec 2024 | Solar |
| Kroger La Habra | Ralph's Grocery Company | La Habra, CA | 2 GWh | Mar 2020 | Dec 2024 | Solar |
| Dos Palos | Greenbacker Renewable Energy Corporation | Dos Palos, CA | 2 GWh | Oct 2021 | Dec 2024 | Solar |
| Calibrant Bakersfield LLC | Bay4 Energy Services, LLC | Bakersfield, CA | 4 GWh | Jan 2022 | Dec 2024 | Solar |
| BCE Los Alamitos 1 | Bright Canyon Energy | Los Alamitos, CA | 19 GWh | Jul 2023 | Dec 2024 | Solar |
| Mesa Wind Repower | Mesa Wind Repower | Whitewater, CA | 80 GWh | May 2024 | Dec 2024 | Wind |
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 |