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 |
|---|---|---|---|---|---|---|
| Rush Creek | Southern California Edison Co | June lake, CA | 30 GWh | Sep 1916 | Dec 2025 | Water |
| Big Creek 2 | Southern California Edison Co | Auberry, CA | 377 GWh | Nov 1913 | Dec 2025 | Water |
| Drum 1 | Pacific Gas & Electric Co. | Alta, CA | 15 GWh | Oct 1913 | Dec 2025 | Water |
| Big Creek 1 | Southern California Edison Co | Big Creek, CA | 409 GWh | Oct 1913 | Dec 2025 | Water |
| Bishop Creek 3 | Southern California Edison Co | Bishop, CA | 24 GWh | May 1913 | Dec 2025 | Water |
| Bishop Creek 6 | Southern California Edison Co | Bishop, CA | 9 GWh | Feb 1913 | Dec 2025 | Water |
| Lundy | Southern California Edison Co | Lee Vining, CA | 7 GWh | Nov 1911 | Dec 2025 | Water |
| A G Wishon | Pacific Gas & Electric Co. | North Fork, CA | 24 GWh | Aug 1910 | Oct 2025 | Water |
| Bishop Creek 2 | Southern California Edison Co | Bishop, CA | 13 GWh | Oct 1908 | Dec 2025 | Water |
| Deer Creek PH | Nevada Irrigation District | Nevada City, CA | 15 GWh | Apr 1908 | Dec 2025 | Water |
| Kern River 1 | Southern California Edison Co | Bakersfield, CA | 176 GWh | Apr 1907 | Dec 2025 | Water |
| Bishop Creek 4 | Southern California Edison Co | Bishop, CA | 36 GWh | Aug 1905 | Dec 2025 | Water |
| Mill Creek 3 | Southern California Edison Co | Mill Creek, CA | 771 MWh | Feb 1903 | Dec 2025 | Water |
| Alta Powerhouse | Pacific Gas & Electric Co. | Alta, CA | 2 GWh | Oct 1902 | Dec 2025 | Water |
| Aratina Solar Center 1B | 91MC 8me LLC | Boron, CA | 4 GWh | - | Jul 2026 | Solar : 93.6% Electricity used for energy storage : 6.4% |
| OES Biogas Power | Organic Energy Solutions, Inc. | San Bernardino, CA | 904 MWh | - | Dec 2025 | Other Biomass Gas |
| Conflitti Solar | CES Electron Farm One, LLC | Firebaugh, CA | 100 MWh | - | Dec 2025 | Solar |
| SunZia Wind South | Pattern Operators LP | Corona, NM | 2 TWh | - | Jul 2026 | Wind |
| SunZia Wind North | Pattern Operators LP | Clines Corner, NM | 462 GWh | - | Jul 2026 | Wind |
| Pastoria Solar | Pastoria Solar Energy Company, LLC | Lebec, CA | 32 GWh | - | Jul 2026 | Solar |
| Lockhart Solar PV IV, LLC | Terra-Gen Operating Co-Solar | Hinkley, CA | 42 GWh | - | Jul 2026 | Solar |
| Desert Breeze Solar, LLC | Terra-Gen Operating Co-Solar | Hinkley, CA | 107 GWh | - | Jul 2026 | Solar |
| Aratina Solar Center 1A | 64NB 8me LLC | Boron, CA | 6 GWh | - | Jul 2026 | Solar : 97.1% Electricity used for energy storage : 2.9% |
| Angela Solar Project | Angiola East LLC | Alpaugh, CA | 37 GWh | - | Jul 2026 | Solar |
| Deer Creek Hybrid | Deer Creek Solar I, LLC | Terra Bella, CA | 17 GWh | - | Jul 2026 | Solar |
| ATLAS Solar V, LLC | ATLAS Solar V, LLC | Salome, AZ | 9 GWh | - | 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 |