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 |
|---|---|---|---|---|---|---|
| Wonderful Kings | Wonderful Renewable Energy, LLC. | Lost Hills, CA | 8 GWh | Jul 2022 | Dec 2025 | Solar |
| Wonderful Lost Hills | Wonderful Renewable Energy, LLC. | Lost Hills, CA | 41 GWh | Aug 2021 | Dec 2025 | Solar |
| Wonderful Nursery | Wonderful Renewable Energy, LLC. | Wasco, CA | 5 GWh | Jun 2021 | Dec 2025 | Solar |
| Wonderful Orchards - Belridge | Wonderful Renewable Energy, LLC. | Lost Hills, CA | 12 GWh | Nov 2020 | Dec 2025 | Solar |
| Wonderful Orchards - New Columbia | Wonderful Renewable Energy, LLC. | Firebaugh, CA | 11 GWh | Aug 2020 | Dec 2025 | Solar |
| Wonderful Orchards - West Valley | Wonderful Renewable Energy, LLC. | Blackwells Corner, CA | 8 GWh | Sep 2020 | Dec 2025 | Solar |
| Wonderful Orchards - Westside | Wonderful Renewable Energy, LLC. | Lost Hills, CA | 13 GWh | Jul 2021 | Dec 2025 | Solar |
| Woodland Biomass Power Ltd | DTE Energy Services-Woodland | Woodland, CA | 162 GWh | Aug 1989 | Dec 2025 | Wood/Wood Waste Solids : 99.5% |
| Woodleaf | South Feather Water and Power Agency | Forbestown, CA | 167 GWh | Oct 1963 | Dec 2025 | Water |
| Woodmere Solar Farm | AES Distributed Energy | Edison, CA | 29 GWh | Nov 2015 | Dec 2025 | Solar |
| Wright Solar Park | Wright Solar Park LLC | Los Banos, CA | 386 GWh | Nov 2019 | Jul 2026 | Solar |
| WWTP Power Generation Station | East Bay Municipal Util Dist - (CA) | Oakland, CA | 32 GWh | Jul 1985 | Jul 2026 | Other Biomass Gas : 98.9% Distillate Fuel Oil : 1.1% |
| Xilinx San Jose | Bloom Energy | San Jose, CA | 8 GWh | Jan 2012 | Dec 2025 | Natural Gas |
| Yolo County Solar Project | Yolo County of - (CA) | Woodland, CA | 446 MWh | Nov 2010 | Nov 2025 | Solar |
| Yorba Linda | Metropolitan Water District of S CA | Yorba Linda, CA | 9 GWh | Oct 1981 | Nov 2025 | Water |
| Yuba City Cogen Partners | Wellhead Services, Inc | Yuba City, CA | 15 GWh | Nov 1990 | Dec 2025 | Natural Gas |
| Yuba City Energy Center | Calpine Corp-Yuba City | Yuba City, CA | 23 GWh | Jul 2002 | Dec 2025 | Natural Gas |
| ZCO | Wind Stream Operations LLC | Tehachapi, CA | 1 GWh | Nov 1985 | Dec 2024 | Wind |
| Zero Waste Energy Development Co LLC | Zero Waste Energy Development Company LLC | San Jose, CA | 224 MWh | Jan 2015 | Dec 2025 | Other Biomass Gas |
| Zonneveld Oak Grove | Renewable Solar, Inc | Laton, CA | 388 MWh | May 2024 | Dec 2025 | Solar |
| 2081 Terzian Solar Project | Solarenewal LLC | Reedley, CA | 1 GWh | Jan 2014 | Dec 2025 | Solar |
| 2097 Helton Solar Project | Solarenewal LLC | Merced, CA | 1 GWh | Mar 2014 | Dec 2025 | Solar |
| 2127 Harris Solar Project | Solarenewal LLC | Live Oak, CA | 885 MWh | Mar 2014 | Dec 2025 | Solar |
| 85 A | Wind Wall 1 LLC | Tehachapi, CA | 71 GWh | Dec 1984 | Dec 2025 | Wind |
| 85 B | Wind Wall 1 LLC | Tehachapi, CA | 93 GWh | Dec 1984 | Dec 2025 | Wind |
| 9150 Hermosa Solar GM | Valta Energy | Rancho Cucamonga, CA | 3 GWh | Nov 2022 | Dec 2025 | Solar |
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 |