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

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Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
Quinto Solar PV Project	Arevon Energy, Inc.	Gustine, CA	243 GWh	Oct 2015	Dec 2025	Solar
Resurgence Solar	Resurgence Solar	Boron, CA	241 GWh	Jul 2023	Jul 2026	Solar
Valero Refinery Cogeneration Unit 1	Valero Refining Co California	Benicia, CA	237 GWh	Sep 2002	Feb 2026	Natural Gas : 85.2% Other Gas : 14.8%
CD4	CD4	Mammoth Lakes, CA	236 GWh	Jun 2022	Dec 2025	Geothermal
Lockhart Solar PV, LLC	Terra-Gen Operating Co-Solar	Hinkley, CA	236 GWh	Nov 1989	Jul 2026	Solar
Coso Energy Developers	Coso Operating Co LLC	Inyokern, CA	235 GWh	Nov 1988	Dec 2025	Geothermal
Ivanpah 2	NRG Energy Services	Nipton, CA	234 GWh	Nov 2013	Jul 2026	Solar : 98.0% Natural Gas : 2.0%
Vasco Winds	Vasco Winds, LLC	Livermore, CA	234 GWh	Nov 2011	Oct 2025	Wind
Donnells	Oakdale&South San Joaquin Irrigation D.	None, CA	233 GWh	May 1957	Dec 2025	Water
Maverick Solar 6, LLC	Maverick Solar 6, LLC	Desert Center, CA	233 GWh	Oct 2021	Jul 2026	Solar
Desert Harvest, LLC	Desert Harvest, LLC	Desert Center, CA	230 GWh	Nov 2020	Jul 2026	Solar
University of California San Diego Hybri	University of California San Diego	La Jolla, CA	227 GWh	Jun 2001	Jul 2026	Natural Gas
Oasis Wind	Terra-Gen Operating Co-Wind	Mojave, CA	221 GWh	Nov 2004	Dec 2025	Wind
RE Mustang LLC	MN8 Energy LLC	Lemoore, CA	221 GWh	Jul 2016	Dec 2025	Solar
Willow Spring Solar, LLC	Willow Spring Solar LLC	Rosamond, CA	220 GWh	Dec 2018	Jul 2026	Solar
Alta Wind VIII	Nextera Energy Resources	Mojave, CA	219 GWh	Dec 2011	Dec 2025	Wind
Point Wind	Terra-Gen Operating Co-Wind	Tehachapi, CA	218 GWh	Feb 2021	Jul 2026	Wind
Tiger Creek	Pacific Gas & Electric Co.	Pioneer, CA	216 GWh	May 1931	Dec 2025	Water
High Winds LLC	FPLE High Winds, LLC	Birds Landing, CA	214 GWh	Jun 2003	Dec 2025	Wind
Antelope Expansion 2	AES Distributed Energy	Lancaster, CA	214 GWh	Nov 2018	Jul 2026	Solar
Sky River Wind Energy Center	Sky River Wind LLC	Tehachapi, CA	211 GWh	Jan 1991	Dec 2025	Wind
Pit 5	Pacific Gas & Electric Co.	Big Bend, CA	211 GWh	Mar 1944	Jul 2026	Water
W E Warne	California Dept. of Water Resources	Gorman, CA	211 GWh	Oct 1982	Dec 2025	Water
Kern River Eastridge Cogen	Chevron USA Inc	Bakersfield, CA	211 GWh	May 1988	Jul 2026	Natural Gas
Pinyon Pine II	Pinyon Pines Wind II, LLC	Mojave, CA	204 GWh	Oct 2012	Dec 2025	Wind
Lockhart Solar PV II	Terra-Gen Operating Co-Solar	Hinkley, CA	203 GWh	Jun 2023	Jul 2026	Solar
Coachella Hills Wind	Terra-Gen Operating Co-Wind	Palm Springs, CA	202 GWh	Feb 2021	Jul 2026	Wind
Sierra Pacific Quincy Facility	Sierra Pacific Industries	Quincy, CA	202 GWh	Nov 1986	Dec 2025	Wood/Wood Waste Solids
Carlsbad Energy Center	NRG California Peaker Operations LLC	Carlsbad, CA	201 GWh	Nov 2018	Jul 2026	Natural Gas
Stanislaus	Pacific Gas & Electric Co.	Vallecito, CA	200 GWh	Feb 1963	Dec 2025	Water
San Pablo Raceway	AES Distributed Energy	Lancaster, CA	197 GWh	Jul 2019	Jul 2026	Solar
Solverde 1	AES Distributed Energy	Lancaster, CA	197 GWh	Nov 2016	Jul 2026	Solar
Poe	Pacific Gas & Electric Co.	Storrie, CA	197 GWh	Sep 1958	Jul 2026	Water
HL Power	HL Power Company	Wendel, CA	196 GWh	Jun 1989	Dec 2025	Wood/Wood Waste Solids : 99.4% Natural Gas : 0.6%
Montezuma Wind II	NextEra Energy Montezuma Wind II, LLC	Birds Landing, CA	196 GWh	Dec 2011	Dec 2025	Wind
Desert Harvest II LLC	Desert Harvest II LLC	Desert Center, CA	193 GWh	Nov 2020	Jul 2026	Solar
Ivanpah 1	NRG Energy Services	Nipton, CA	192 GWh	Nov 2013	Jul 2026	Solar : 96.3% Natural Gas : 3.7%
Strauss Wind Farm	Strauss Wind LLC	Lompoc, CA	192 GWh	Nov 2023	Jul 2026	Wind
Bucks Creek	Pacific Gas & Electric Co.	Storrie, CA	192 GWh	Feb 1928	Dec 2025	Water
San Gorgonio Windplant WPP1993	FPL Energy Operating Services, Inc.	North Palm Springs, CA	192 GWh	Nov 2011	Dec 2025	Wind
RE Astoria 2	RE Astoria 2 LLC	Rosamond, CA	188 GWh	Nov 2016	Jul 2026	Solar
RE Astoria	RE Astoria LLC	Rosamond, CA	186 GWh	Nov 2016	Jul 2026	Solar
Ivanpah 3	NRG Energy Services	Nipton, CA	185 GWh	Nov 2013	Jul 2026	Solar : 97.7% Natural Gas : 2.3%
Oxnard Paper Mill	New-Indy, Oxnard LLC	Oxnard, CA	183 GWh	Feb 1986	Jul 2026	Natural Gas
Narrows 2	Yuba County Water Agency - (CA)	Browns Valley, CA	181 GWh	Nov 1969	Dec 2025	Water
Los Esteros Critical Energy Center	Los Esteros Critical Energy Facility LLC	San Jose, CA	180 GWh	Jan 2003	Jul 2026	Natural Gas
Summit Winds	Greenbacker Renewable Energy Corporation	Livermore, CA	176 GWh	Jun 2021	Jul 2026	Wind
Kern River 1	Southern California Edison Co	Bakersfield, CA	176 GWh	Apr 1907	Dec 2025	Water
Haas	Pacific Gas & Electric Co.	Balch Camp, CA	174 GWh	Nov 1958	Jul 2026	Water
Mountain View IV	AES Distributed Energy	North Palm Springs, CA	173 GWh	Jan 2012	Dec 2025	Wind
Henrietta Solar Project	Southern Power Co	Lemoore, CA	170 GWh	Jul 2016	Dec 2025	Solar
Alta Wind Energy Center IV	Alta Wind IV, LLC	Mojave, CA	168 GWh	Mar 2011	Dec 2025	Wind
Woodleaf	South Feather Water and Power Agency	Forbestown, CA	167 GWh	Oct 1963	Dec 2025	Water
Sentinel Energy Center, LLC	Sentinel Energy Center LLC	Desert Hot Springs, CA	165 GWh	Apr 2013	Jul 2026	Natural Gas
Brookfield Tehachapi 1	Coram California Development, L.P.	Mojave, CA	164 GWh	Feb 2012	Dec 2025	Wind
Drum 2	Pacific Gas & Electric Co.	Alta, CA	164 GWh	Nov 1965	Dec 2025	Water
Woodland Biomass Power Ltd	DTE Energy Services-Woodland	Woodland, CA	162 GWh	Aug 1989	Dec 2025	Wood/Wood Waste Solids : 99.5%
Painted Hills Wind Park	Terra-Gen Operating Co-Wind	Whitewater, CA	161 GWh	Oct 1985	Jul 2026	Wind
THUMS	THUMS Long Beach Company	Long Beach, CA	158 GWh	Dec 2002	Jul 2026	Natural Gas
Titan Solar 1 (CA)	Titan Solar 1, LLC	Borrego Springs, CA	157 GWh	Nov 2020	Jul 2026	Solar
Total Energy Facilities	Los Angeles County Sanitation	Carson, CA	157 GWh	Dec 1985	Dec 2025	Other Biomass Gas : 94.7% Natural Gas : 5.3%
Estrella Solar & Storage	AES Clean Energy	Lancaster, CA	155 GWh	Nov 2023	Jul 2026	Solar
Argus Cogen Plant	Searles Valley Minerals Operations Inc.	Trona, CA	154 GWh	Nov 1947	Jul 2026	Bituminous Coal : 71.3% Natural Gas : 28.7%
Big Creek 8	Southern California Edison Co	Auberry, CA	152 GWh	Jul 1921	Dec 2025	Water
Edwards Sanborn E5	Terra-Gen Operating Co-Hybrid	Mojave, CA	152 GWh	Nov 2022	Jul 2026	Solar
Bowerman Power LFG, LLC	Bowerman Power LFG, LLC	Irvine, CA	151 GWh	Mar 2016	Dec 2025	Landfill Gas
Regulus Solar Project	Regulus Solar, LLC	Bakersfield, CA	150 GWh	Oct 2014	Dec 2025	Solar
Cameron Ridge LLC	Terra-Gen Operating Co-Wind	Mojave, CA	148 GWh	Nov 1984	Dec 2025	Wind
Rio Bravo Rocklin	Rio Bravo Rocklin	Lincoln, CA	147 GWh	May 1989	Dec 2025	Wood/Wood Waste Solids : 99.0% Natural Gas : 1.0%
Puente Hills Energy Recovery	Los Angeles County Sanitation	Whittier, CA	145 GWh	Sep 1986	Jul 2026	Landfill Gas
Butt Valley	Pacific Gas & Electric Co.	Belden, CA	145 GWh	Nov 1958	Dec 2025	Water
Wadham Energy	Wadham Energy LP	Williams, CA	145 GWh	Feb 1989	Dec 2025	Agricultural By-Products : 99.7%
Sycamore Cogeneration	Sycamore Cogeneration Co	Bakersfield, CA	144 GWh	Nov 1987	Jun 2026	Natural Gas
Kern River 3	Southern California Edison Co	Kernville, CA	143 GWh	Feb 1921	Dec 2025	Water
Mesquite Solar 4, LLC	RWE Clean Energy	Tonopah, AZ	140 GWh	Dec 2023	Jul 2026	Solar
Dillon Wind LLC	Avangrid Power LLC	North Palm Springs, CA	138 GWh	Mar 2008	Dec 2025	Wind
Luciana	Tulare Solar Center, LLC	Richgrove, CA	138 GWh	Mar 2022	Jul 2026	Solar
Berry Cogen Tanne Hills 18	Berry Petroleum Co	Maricopa, CA	138 GWh	Nov 1986	Jul 2026	Natural Gas
Golden Fields Solar I, LLC	MN8 Energy LLC	Rosamond, CA	136 GWh	Nov 2016	Jul 2026	Solar
Solar Star California, XLI, LLC	MN8 Energy LLC	Rosamond, CA	135 GWh	Nov 2016	Jul 2026	Solar
Camino Solar Hybrid	Avangrid Power LLC	Rosamond, CA	134 GWh	Mar 2025	Jul 2026	Solar
PE Berkeley	Berkeley Cogeneration Facility	Berkeley, CA	134 GWh	May 1987	Jun 2026	Natural Gas
North Star Solar	Southern Power Co	Mendota, CA	133 GWh	May 2015	Dec 2025	Solar
Sunshine Gas Producers	Sunshine Gas Producers LLC	Sylmar, CA	132 GWh	Jul 2014	Jul 2026	Landfill Gas
Kumeyaay Wind	Leeward Asset Management, LLC	Campo, CA	131 GWh	Nov 2005	Dec 2025	Wind
Resurgence Solar II	Resurgence Solar II	Boron, CA	130 GWh	Jul 2023	Jul 2026	Solar
Glenarm	City of Pasadena - (CA)	Pasadena, CA	130 GWh	Dec 1975	Dec 2025	Natural Gas
Whitewater Hill Wind Partners	Shell Wind Energy Inc.	North Palm Springs, CA	127 GWh	Sep 2002	Dec 2025	Wind
Mojave 3/4/5	Terra-Gen Operating Co-Wind	Mojave, CA	125 GWh	Nov 1990	Dec 2025	Wind
Golden Hills North Wind Energy Center	Golden Hills Interconnection Wind, LLC	Livermore, CA	125 GWh	Oct 2017	Jul 2026	Wind
RE Gaskell West 2 LLC	RE Gaskell West LLC	Rosamond, CA	123 GWh	Apr 2023	Jul 2026	Solar
San Gorgonio Westwinds II LLC	Terra-Gen Operating Co-Wind	North Palm Springs, CA	123 GWh	May 1999	Dec 2025	Wind
SPI Anderson 2	Sierra Pacific Industries	Anderson, CA	122 GWh	Jul 2015	Dec 2025	Wood/Wood Waste Solids : 99.3% Natural Gas : 0.7%
RE Camelot LLC	Onward Energy	Mojave, CA	121 GWh	Nov 2014	Dec 2025	Solar
Humboldt Sawmill Company	Mendocino Forest Products	Scotia, CA	119 GWh	Dec 1937	Jul 2026	Wood/Wood Waste Solids : 99.8%
Ridgetop	Terra-Gen Operating Co-Wind	Mojave, CA	118 GWh	Mar 1994	Dec 2025	Wind
Voyager Wind III	Terra-Gen Operating Co-Wind	Mojave, CA	117 GWh	Nov 2018	Jul 2026	Wind
Mesa Wind Power LLC	Mesa Wind Power LLC	North Palm Springs, CA	117 GWh	Oct 1984	Jul 2026	Wind
Antelope DSR 1	AES Distributed Energy	Lancaster, CA	116 GWh	Nov 2016	Jul 2026	Solar
Forbestown	South Feather Water and Power Agency	Forbestown, CA	115 GWh	Sep 1963	Dec 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