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 |
|---|---|---|---|---|---|---|
| Anaheim Solar Energy Plant | Anaheim Public Utilities | Anaheim, CA | 2 GWh | Jul 2014 | Dec 2025 | Solar |
| American Canyon Solar | RP Napa Solar 1, LLC | American Canyon, CA | 6 GWh | Aug 2019 | Dec 2025 | Solar |
| Sutter Home Winery GIR | Westbound Solar 3, LLC | American Canyon, CA | 2 GWh | Jul 2023 | Dec 2025 | Solar |
| Drum 1 | Pacific Gas & Electric Co. | Alta, CA | 15 GWh | Oct 1913 | Dec 2025 | Water |
| Alta Powerhouse | Pacific Gas & Electric Co. | Alta, CA | 2 GWh | Oct 1902 | Dec 2025 | Water |
| Drum 2 | Pacific Gas & Electric Co. | Alta, CA | 164 GWh | Nov 1965 | Dec 2025 | Water |
| Dutch Flat | Pacific Gas & Electric Co. | Alta, CA | 66 GWh | Feb 1943 | Dec 2025 | Water |
| Atwell Island West Solar | RWE Clean Energy | Alpaugh, CA | 52 GWh | Apr 2015 | Dec 2025 | Solar |
| Alpaugh 50 | RWE Clean Energy | Alpaugh, CA | 57 GWh | Nov 2012 | Dec 2025 | Solar |
| Alpaugh North | RWE Clean Energy | Alpaugh, CA | 21 GWh | Nov 2012 | Dec 2025 | Solar |
| White River Solar | RWE Clean Energy | Alpaugh, CA | 36 GWh | Jun 2013 | Dec 2025 | Solar |
| Atwell Island | SPS Atwell Island LLC | Alpaugh, CA | 34 GWh | Feb 2013 | Dec 2025 | Solar |
| White River Solar 2 | RWE Clean Energy | Alpaugh, CA | 49 GWh | Aug 2014 | Dec 2025 | Solar |
| Angela Solar Project | Angiola East LLC | Alpaugh, CA | 37 GWh | - | Jul 2026 | Solar |
| Ratkovich Alhambra | Bloom Energy | Alhambra, CA | 7 GWh | Nov 2018 | Dec 2025 | Natural Gas |
| Alameda | Northern California Power Agny | Alameda, CA | 3 GWh | Apr 1986 | Dec 2025 | Natural Gas |
| Calabasas Gas to Energy Facility | Los Angeles County Sanitation | Agoura, CA | 32 GWh | Jun 2010 | Dec 2025 | Landfill Gas |
| Watts 3115 | CD US Solar MT 2 LLC | Adelanto, CA | 4 GWh | Jul 2013 | Dec 2025 | Solar |
| RE Victor Phelan Solar One LLC | MN8 Energy LLC | Adelanto, CA | 45 GWh | Nov 2013 | Dec 2025 | Solar |
| Industry Solar Power Generation Station | AES Distributed Energy | Adelanto, CA | 4 GWh | Nov 2013 | Dec 2025 | Solar |
| Adelanto Solar, LLC | Adelanto Solar, LLC | Adelanto, CA | 59 GWh | Aug 2015 | Dec 2025 | Solar |
| Baldy Mesa Solar & Storage | AES Clean Energy | Adelanto, CA | 299 GWh | Apr 2024 | Jul 2026 | Solar |
| Coronus Adelanto West 1 | Clean Focus Yield, LLC | Adelanto, CA | 3 GWh | Dec 2014 | Dec 2025 | Solar |
| Adelanto Solar II, LLC | Adelanto Solar II, LLC | Adelanto, CA | 18 GWh | Jun 2015 | Dec 2025 | Solar |
| Coronus Adelanto West 2 | Clean Focus Yield, LLC | Adelanto, CA | 3 GWh | Dec 2014 | Dec 2025 | Solar |
| Baldy Mesa 2_Silver Peak Hybrid | AES Clean Energy | Adelanto, CA | 113 GWh | Nov 2024 | Jul 2026 | 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 |