California Independent System Operator

Balancing Authority Summary Information

California Independent System Operator is ranked #7 out of 65 balancing authorities in terms of total annual electricity generation.

Balancing Authority	California Independent System Operator
States	Arizona California Nevada
Last Update	May 2025
Annual Generation	189.5 TWh
Power Plants	1,943
Utilities	893
Ranked #7 out of 65 in terms of net annual generation
Ranked #7 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 43.6% Solar \| 24.8% Water \| 11.6% Wind \| 10.8% Nuclear \| 9.7%

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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
Resurgence Solar	Resurgence Solar	Boron, CA	243 GWh	Jul 2023	Feb 2025	Solar
Maverick Solar 4, LLC	Maverick Solar 4, LLC	Desert Center, CA	239 GWh	Nov 2020	Feb 2025	Solar
Willow Spring Solar, LLC	Willow Spring Solar LLC	Rosamond, CA	239 GWh	Dec 2018	Feb 2025	Solar
Kern River Cogeneration	Kern River Cogeneration Co	Bakersfield, CA	238 GWh	Jun 1985	Jan 2025	Natural Gas
Alta Wind Energy Center V	Alta Wind Energy Center V	Mojave, CA	238 GWh	Mar 2011	Dec 2023	Wind
High Winds LLC	FPLE High Winds, LLC	Birds Landing, CA	238 GWh	Jun 2003	Dec 2023	Wind
Point Wind	Terra-Gen Operating Co-Wind	Tehachapi, CA	235 GWh	Feb 2021	Feb 2025	Wind
Henrietta Solar Project	Southern Power Co	Lemoore, CA	234 GWh	Jul 2016	Dec 2023	Solar
CA Flats Solar 130, LLC	California Flats Solar 130, LLC	Shandon, CA	232 GWh	Oct 2017	Feb 2025	Solar
Woodleaf	South Feather Water and Power Agency	Forbestown, CA	232 GWh	Oct 1963	Dec 2023	Water
Strauss Wind Farm	Strauss Wind LLC	Lompoc, CA	232 GWh	Nov 2023	Feb 2025	Wind
Lockhart Solar PV, LLC	Terra-Gen Operating Co-Solar	Hinkley, CA	227 GWh	Nov 1989	Feb 2025	Solar
Kern River Eastridge Cogen	Chevron USA Inc	Bakersfield, CA	226 GWh	May 1988	Feb 2025	Natural Gas
Los Esteros Critical Energy Center	Los Esteros Critical Energy Facility LLC	San Jose, CA	224 GWh	Jan 2003	Feb 2025	Natural Gas
University of California San Diego Hybrid	University of California San Diego	La Jolla, CA	221 GWh	Jun 2001	Feb 2025	Natural Gas
Walnut Creek Energy Park	Walnut Creek LLC	Industry, CA	221 GWh	Mar 2013	Feb 2025	Natural Gas
Brookfield Tehachapi 1	Coram California Development, L.P.	Mojave, CA	220 GWh	Feb 2012	Dec 2023	Wind
W E Warne	California Dept. of Water Resources	Gorman, CA	217 GWh	Oct 1982	Dec 2023	Water
Vasco Winds	Vasco Winds, LLC	Livermore, CA	216 GWh	Nov 2011	Dec 2023	Wind
Coachella Hills Wind	Terra-Gen Operating Co-Wind	Palm Springs, CA	216 GWh	Feb 2021	Feb 2025	Wind
Copper Mountain Solar 4, LLC	Consolidated Edison Development Inc.	Boulder City, NV	214 GWh	Aug 2016	Dec 2023	Solar
RE Astoria	RE Astoria LLC	Rosamond, CA	214 GWh	Nov 2016	Feb 2025	Solar
Quinto Solar PV Project	Arevon Energy, Inc.	Gustine, CA	214 GWh	Oct 2015	Dec 2023	Solar
Rising Tree Wind Farm	Rising Tree Wind Farm LLC	Mojave, CA	213 GWh	Dec 2014	Dec 2023	Wind
Kings River PH	Pacific Gas & Electric Co.	Balch Camp, CA	207 GWh	Feb 1962	Dec 2023	Water
Oasis Wind	Terra-Gen Operating Co-Wind	Mojave, CA	205 GWh	Nov 2004	Dec 2023	Wind
HL Power	HL Power Company	Wendel, CA	205 GWh	Jun 1989	Dec 2023	Wood/Wood Waste Solids : 99.7%
San Gorgonio Windplant WPP1993	FPL Energy Operating Services, Inc.	North Palm Springs, CA	204 GWh	Nov 2011	Dec 2023	Wind
Desert Harvest, LLC	Desert Harvest, LLC	Desert Center, CA	202 GWh	Nov 2020	Feb 2025	Solar
Sky River Wind Energy Center	Sky River Wind LLC	Tehachapi, CA	202 GWh	Jan 1991	Dec 2023	Wind
Salt Springs	Pacific Gas & Electric Co.	Pioneer, CA	201 GWh	May 1931	Dec 2023	Water
Caribou 1	Pacific Gas & Electric Co.	Belden, CA	198 GWh	May 1921	Dec 2023	Water
Solverde 1	AES Distributed Energy	Lancaster, CA	198 GWh	Nov 2016	Feb 2025	Solar
Montezuma Wind II	NextEra Energy Montezuma Wind II, LLC	Birds Landing, CA	197 GWh	Dec 2011	Dec 2023	Wind
Pit 1	Pacific Gas & Electric Co.	Burney, CA	195 GWh	Aug 1922	Dec 2023	Water
Ivanpah 1	NRG Energy Services	Nipton, CA	195 GWh	Nov 2013	Feb 2025	Solar : 95.5% Natural Gas : 4.5%
Lockhart Solar PV II	Terra-Gen Operating Co-Solar	Hinkley, CA	193 GWh	Jun 2023	Feb 2025	Solar
Oxnard Paper Mill	New-Indy, Oxnard LLC	Oxnard, CA	193 GWh	Feb 1986	Feb 2025	Natural Gas
Windstar 1	Nextera Energy Resources	Tehachapi, CA	192 GWh	Jan 2012	Dec 2023	Wind
Pinyon Pine II	Pinyon Pines Wind II, LLC	Mojave, CA	189 GWh	Oct 2012	Dec 2023	Wind
Burney Forest Products	Burney Forest Products, A Joint Venture	Burney, CA	187 GWh	Sep 1989	Dec 2023	Wood/Wood Waste Solids : 96.1% Natural Gas : 3.9%
Alta Wind VIII	Nextera Energy Resources	Mojave, CA	186 GWh	Dec 2011	Dec 2023	Wind
Kern River 3	Southern California Edison Co	Kernville, CA	185 GWh	Feb 1921	Dec 2023	Water
Balch 1	Pacific Gas & Electric Co.	Balch Camp, CA	184 GWh	Jan 1927	Dec 2023	Water
Pardee	East Bay Municipal Util Dist	Valley Springs, CA	182 GWh	Jun 1930	Dec 2023	Water
Desert Quartzite	Desert Quartzite LLC	Blythe, CA	175 GWh	-	Feb 2025	Solar
Mountain View IV	AES Distributed Energy	North Palm Springs, CA	175 GWh	Jan 2012	Dec 2023	Wind
Summit Winds	Greenbacker Renewable Energy Corporation	Livermore, CA	173 GWh	Jun 2021	Feb 2025	Wind
Painted Hills Wind Park	Terra-Gen Operating Co-Wind	Whitewater, CA	173 GWh	Oct 1985	Feb 2025	Wind
Woodland Biomass Power Ltd	DTE Energy Services-Woodland	Woodland, CA	172 GWh	Aug 1989	Dec 2023	Wood/Wood Waste Solids : 99.6%
Whitewater Hill Wind Partners	Shell Wind Energy Inc.	North Palm Springs, CA	172 GWh	Sep 2002	Dec 2023	Wind
Sierra Pacific Quincy Facility	Sierra Pacific Industries	Quincy, CA	171 GWh	Nov 1986	Dec 2023	Wood/Wood Waste Solids
Valero Refinery Cogeneration Unit 1	Valero Refining Co California	Benicia, CA	171 GWh	Sep 2002	Feb 2025	Natural Gas : 96.3% Other Gas : 3.7%
Total Energy Facilities	Los Angeles County Sanitation	Carson, CA	169 GWh	Dec 1985	Dec 2023	Other Biomass Gas : 79.6% Natural Gas : 20.4%
Kern River 1	Southern California Edison Co	Bakersfield, CA	167 GWh	Apr 1907	Dec 2023	Water
Desert Harvest II LLC	Desert Harvest II LLC	Desert Center, CA	164 GWh	Nov 2020	Feb 2025	Solar
Bowerman Power LFG, LLC	Bowerman Power LFG, LLC	Irvine, CA	161 GWh	Mar 2016	Dec 2023	Landfill Gas
Alpine Solar	Alpine Solar	Lancaster, CA	161 GWh	Jan 2013	Dec 2023	Solar
Puente Hills Energy Recovery	Los Angeles County Sanitation	Whittier, CA	159 GWh	Sep 1986	Feb 2025	Landfill Gas
PE Berkeley	Berkeley Cogeneration Facility	Berkeley, CA	157 GWh	May 1987	Feb 2025	Natural Gas
Forbestown	South Feather Water and Power Agency	Forbestown, CA	155 GWh	Sep 1963	Dec 2023	Water
RE Astoria 2	RE Astoria 2 LLC	Rosamond, CA	153 GWh	Nov 2016	Feb 2025	Solar
Big Creek 8	Southern California Edison Co	Auberry, CA	153 GWh	Jul 1921	Dec 2023	Water
Dillon Wind LLC	Avangrid Renewables LLC	North Palm Springs, CA	151 GWh	Mar 2008	Dec 2023	Wind
Solar Star California, XLI, LLC	MN8 Energy LLC	Rosamond, CA	151 GWh	Nov 2016	Feb 2025	Solar
Mesquite Solar 4, LLC	Consolidated Edison Development Inc.	Tonopah, AZ	150 GWh	-	Feb 2025	Solar : 99.9%
RE Mustang LLC	MN8 Energy LLC	Lemoore, CA	150 GWh	Jul 2016	Dec 2023	Solar
Voyager Wind III	Terra-Gen Operating Co-Wind	Mojave, CA	150 GWh	Nov 2018	Feb 2025	Wind
Alta Wind Energy Center IV	Alta Wind Energy Center IV	Mojave, CA	148 GWh	Mar 2011	Dec 2023	Wind
Titan Solar 1 (CA)	Titan Solar 1, LLC	Borrego Springs, CA	148 GWh	Nov 2020	Feb 2025	Solar
White Wing Solar	Leeward Asset Management, LLC	Yuma, AZ	148 GWh	-	Feb 2025	Solar
Rio Bravo Rocklin	Rio Bravo Rocklin	Lincoln, CA	147 GWh	May 1989	Dec 2023	Wood/Wood Waste Solids : 98.8% Natural Gas : 1.2%
Butt Valley	Pacific Gas & Electric Co.	Belden, CA	147 GWh	Nov 1958	Dec 2023	Water
Rio Bravo Fresno	Rio Bravo Fresno	Fresno, CA	145 GWh	Jun 1988	Dec 2023	Wood/Wood Waste Solids : 97.0% Natural Gas : 3.0%
Kumeyaay Wind	Leeward Asset Management, LLC	Campo, CA	145 GWh	Nov 2005	Dec 2023	Wind
Regulus Solar Project	Regulus Solar, LLC	Bakersfield, CA	145 GWh	Oct 2014	Dec 2023	Solar
Pacific-Ultrapower Chinese Station	IHI Power Services Corp	Jamestown, CA	144 GWh	Sep 1986	Feb 2025	Wood/Wood Waste Solids : 99.6%
Golden Fields Solar I, LLC	MN8 Energy LLC	Rosamond, CA	143 GWh	Nov 2016	Feb 2025	Solar
SPI Anderson 2	Sierra Pacific Industries	Anderson, CA	142 GWh	Jul 2015	Dec 2023	Wood/Wood Waste Solids : 99.8%
El Segundo Energy Center LLC	El Segundo Energy Center, LLC	El Segundo, CA	139 GWh	Jun 2013	Feb 2025	Natural Gas
Berry Cogen Tanne Hills 18	Berry Petroleum Co	Maricopa, CA	138 GWh	Nov 1986	Feb 2025	Natural Gas
North Star Solar	Southern Power Co	Mendota, CA	136 GWh	May 2015	Dec 2023	Solar
Chicago Park	Nevada Irrigation District	Colfax, CA	135 GWh	Oct 1965	Dec 2023	Water
Edwards Sanborn E5	Terra-Gen Operating Co-Hybrid	Mojave, CA	134 GWh	Nov 2022	Feb 2025	Solar
Resurgence Solar II	Resurgence Solar II	Boron, CA	133 GWh	Jul 2023	Feb 2025	Solar
Golden Hills North Wind Energy Center	Golden Hills Interconnection Wind, LLC	Livermore, CA	130 GWh	Oct 2017	Feb 2025	Wind
Luciana	Tulare Solar Center, LLC	Richgrove, CA	128 GWh	Mar 2022	Feb 2025	Solar
Antelope DSR 1	AES Distributed Energy	Lancaster, CA	127 GWh	Nov 2016	Feb 2025	Solar
AES Alamitos LLC	AES Alamitos LLC	Long Beach, CA	127 GWh	Aug 1956	Oct 2024	Natural Gas
Cameron Ridge LLC	Terra-Gen Operating Co-Wind	Mojave, CA	125 GWh	Nov 1984	Dec 2023	Wind
Tulloch	Oakdale&South San Joaquin Irrigation D.	Jamestown, CA	125 GWh	May 1958	Dec 2023	Water
Sand Bar Power Plant	Tri-Dam Power Authority	Stanislaus Ntl. Fores, CA	124 GWh	Apr 1986	Dec 2023	Water
Cresta	Pacific Gas & Electric Co.	Storrie, CA	122 GWh	Oct 1949	Dec 2023	Water
Ridgetop	Terra-Gen Operating Co-Wind	Mojave, CA	120 GWh	Mar 1994	Dec 2023	Wind
Sunshine Gas Producers	Sunshine Gas Producers LLC	Sylmar, CA	119 GWh	Jul 2014	Feb 2025	Landfill Gas
Little Bear 5	Little Bear Solar 5, LLC (Longroad)	Mendota, CA	119 GWh	Nov 2020	Feb 2025	Solar
Cabazon Wind Partners	Shell Wind Energy Inc.	Cabazon, CA	118 GWh	Sep 2002	Dec 2023	Wind
Humboldt Sawmill Company	Mendocino Forest Products	Scotia, CA	118 GWh	Dec 1937	Feb 2025	Wood/Wood Waste Solids : 99.7%
RE Camelot LLC	Onward Energy	Mojave, CA	118 GWh	Nov 2014	Dec 2023	Solar
Marsh Landing Generating Station	Marsh Landing LLC	Antioch, CA	116 GWh	Apr 2013	Feb 2025	Natural Gas

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#27	Arizona Public Service Company	22.7 TWh	75
#55	Arlington Valley, LLC	3.3 TWh	1
#36	Balancing Authority of Northern California	15.0 TWh	83
#48	Imperial Irrigation District	5.8 TWh	65
#33	Los Angeles Department of Water and Power	17.4 TWh	120
#22	Nevada Power Company	38.1 TWh	136
#54	New Harquahala Generating Company, LLC	3.6 TWh	1
#18	Salt River Project Agricultural Improvement and Power District	58.5 TWh	45
#58	Turlock Irrigation District	2.1 TWh	11
#42	Western Area Power Administration - Desert Southwest Region	8.3 TWh	30

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#3	Electric Reliability Council of Texas, Inc.	474.5 TWh	1,139
#5	Southwest Power Pool	296.3 TWh	762
#6	Southern Company Services, Inc. - Trans	252.3 TWh	393
#7	California Independent System Operator	189.5 TWh	1,943
#8	Tennessee Valley Authority	158.9 TWh	170
#10	Florida Power & Light Co.	148.5 TWh	159
#12	New York Independent System Operator	130.9 TWh	1,100
#13	Duke Energy Carolinas	111.3 TWh	556
#15	ISO New England	103.6 TWh	1,487
#16	Bonneville Power Administration	83.0 TWh	158