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	Apr 2026
Annual Generation	176.8 TWh
Power Plants	2,075
Utilities	965
Ranked #7 out of 65 in terms of net annual generation
Ranked #10 out of 54 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 38.5% Solar \| 28.7% Water \| 12.1% Wind \| 10.2% Nuclear \| 10.1%

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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
Sunshine Gas Producers	Sunshine Gas Producers LLC	Sylmar, CA	131 GWh	Jul 2014	Feb 2026	Landfill Gas
Wadham Energy LP	Wadham Energy Ltd Partners	Williams, CA	132 GWh	Feb 1989	Dec 2024	Agricultural By-Products : 99.7%
Oxnard Paper Mill	New-Indy, Oxnard LLC	Oxnard, CA	132 GWh	Feb 1986	Feb 2026	Natural Gas
North Star Solar	Southern Power Co	Mendota, CA	132 GWh	May 2015	Dec 2024	Solar
Titan Solar 1 (CA)	Titan Solar 1, LLC	Borrego Springs, CA	132 GWh	Nov 2020	Feb 2026	Solar
Mojave 3/4/5	Terra-Gen Operating Co-Wind	Mojave, CA	133 GWh	Nov 1990	Dec 2024	Wind
Resurgence Solar II	Resurgence Solar II	Boron, CA	134 GWh	Jul 2023	Feb 2026	Solar
Golden Fields Solar I, LLC	MN8 Energy LLC	Rosamond, CA	134 GWh	Nov 2016	Feb 2026	Solar
Sentinel Energy Center, LLC	Sentinel Energy Center LLC	Desert Hot Springs, CA	135 GWh	Apr 2013	Feb 2026	Natural Gas
Luciana	Tulare Solar Center, LLC	Richgrove, CA	136 GWh	Mar 2022	Feb 2026	Solar
Golden Hills North Wind Energy Center	Golden Hills Interconnection Wind, LLC	Livermore, CA	137 GWh	Oct 2017	Feb 2026	Wind
SPI Anderson 2	Sierra Pacific Industries	Anderson, CA	138 GWh	Jul 2015	Oct 2024	Wood/Wood Waste Solids : 99.0% Natural Gas : 1.0%
Balch 1	Pacific Gas & Electric Co.	Balch Camp, CA	139 GWh	Jan 1927	Dec 2024	Water
Berry Cogen Tanne Hills 18	Berry Petroleum Co	Maricopa, CA	139 GWh	Nov 1986	Feb 2026	Natural Gas
Dillon Wind LLC	Avangrid Power LLC	North Palm Springs, CA	142 GWh	Mar 2008	Dec 2024	Wind
Kern River 3	Southern California Edison Co	Kernville, CA	143 GWh	Feb 1921	Dec 2024	Water
Solar Star California, XLI, LLC	MN8 Energy LLC	Rosamond, CA	143 GWh	Nov 2016	Feb 2026	Solar
Mesquite Solar 4, LLC	Consolidated Edison Development Inc.	Tonopah, AZ	143 GWh	Dec 2023	Feb 2026	Solar
Bellefield Solar and Energy Storage Farm	50LW 8me LLC	Mojave, CA	144 GWh	-	Feb 2026	Solar
Cameron Ridge LLC	Terra-Gen Operating Co-Wind	Mojave, CA	144 GWh	Nov 1984	Dec 2024	Wind
Ridgetop	Terra-Gen Operating Co-Wind	Mojave, CA	146 GWh	Mar 1994	Dec 2024	Wind
Puente Hills Energy Recovery	Los Angeles County Sanitation	Whittier, CA	147 GWh	Sep 1986	Feb 2026	Landfill Gas
RE Astoria 2	RE Astoria 2 LLC	Rosamond, CA	148 GWh	Nov 2016	Feb 2026	Solar
Drum 2	Pacific Gas & Electric Co.	Alta, CA	149 GWh	Nov 1965	Dec 2024	Water
Butt Valley	Pacific Gas & Electric Co.	Belden, CA	149 GWh	Nov 1958	Dec 2024	Water
PE Berkeley	Berkeley Cogeneration Facility	Berkeley, CA	151 GWh	May 1987	Feb 2026	Natural Gas
Los Esteros Critical Energy Center	Los Esteros Critical Energy Facility LLC	San Jose, CA	152 GWh	Jan 2003	Feb 2026	Natural Gas
Estrella Solar & Storage	AES Clean Energy	Lancaster, CA	153 GWh	Nov 2023	Feb 2026	Solar
Bowerman Power LFG, LLC	Bowerman Power LFG, LLC	Irvine, CA	154 GWh	Mar 2016	Dec 2024	Landfill Gas
Regulus Solar Project	Regulus Solar, LLC	Bakersfield, CA	154 GWh	Oct 2014	Dec 2024	Solar
Edwards Sanborn E5	Terra-Gen Operating Co-Hybrid	Mojave, CA	154 GWh	Nov 2022	Feb 2026	Solar
Rio Bravo Rocklin	Rio Bravo Rocklin	Lincoln, CA	155 GWh	May 1989	Dec 2024	Wood/Wood Waste Solids : 99.1% Natural Gas : 0.9%
Narrows 2	Yuba County Water Agency	Browns Valley, CA	157 GWh	Nov 1969	Dec 2024	Water
THUMS	THUMS Long Beach Company	Long Beach, CA	159 GWh	Dec 2002	Feb 2026	Natural Gas
Total Energy Facilities	Los Angeles County Sanitation	Carson, CA	161 GWh	Dec 1985	Dec 2024	Other Biomass Gas : 99.6%
Painted Hills Wind Park	Terra-Gen Operating Co-Wind	Whitewater, CA	161 GWh	Oct 1985	Feb 2026	Wind
Woodland Biomass Power Ltd	DTE Energy Services-Woodland	Woodland, CA	171 GWh	Aug 1989	Dec 2024	Wood/Wood Waste Solids : 99.5% Natural Gas : 0.5%
W E Warne	California Dept. of Water Resources	Gorman, CA	171 GWh	Oct 1982	Dec 2024	Water
Big Creek 8	Southern California Edison Co	Auberry, CA	174 GWh	Jul 1921	Dec 2024	Water
Mt Poso Cogeneration	Mt Poso Cogeneration Co	Bakersfield, CA	180 GWh	Apr 1989	Nov 2024	Wood/Wood Waste Solids : 99.3% Natural Gas : 0.7%
RE Astoria	RE Astoria LLC	Rosamond, CA	182 GWh	Nov 2016	Feb 2026	Solar
Luna Valley	Luna Valley Solar I, LLC	Mendota, CA	182 GWh	-	Feb 2026	Solar
Desert Harvest II LLC	Desert Harvest II LLC	Desert Center, CA	183 GWh	Nov 2020	Feb 2026	Solar
Haas	Pacific Gas & Electric Co.	Balch Camp, CA	183 GWh	Nov 1958	Jan 2026	Water
Mountain View IV	AES Distributed Energy	North Palm Springs, CA	187 GWh	Jan 2012	Dec 2024	Wind
Summit Winds	Greenbacker Renewable Energy Corporation	Livermore, CA	187 GWh	Jun 2021	Feb 2026	Wind
Pit 1	Pacific Gas & Electric Co.	Burney, CA	188 GWh	Aug 1922	Dec 2024	Water
Kern River 1	Southern California Edison Co	Bakersfield, CA	192 GWh	Apr 1907	Dec 2024	Water
Sierra Pacific Quincy Facility	Sierra Pacific Industries	Quincy, CA	193 GWh	Nov 1986	Dec 2024	Wood/Wood Waste Solids
Carlsbad Energy Center	NRG California Peaker Operations LLC	Carlsbad, CA	193 GWh	Nov 2018	Feb 2026	Natural Gas
Burney Forest Products	Burney Forest Products, A Joint Venture	Burney, CA	193 GWh	Sep 1989	Dec 2024	Wood/Wood Waste Solids : 94.4% Natural Gas : 5.6%
Alta Wind Energy Center IV	Alta Wind IV, LLC	Mojave, CA	193 GWh	Mar 2011	Dec 2024	Wind
Woodleaf	South Feather Water and Power Agency	Forbestown, CA	194 GWh	Oct 1963	Dec 2024	Water
Montezuma Wind II	NextEra Energy Montezuma Wind II, LLC	Birds Landing, CA	196 GWh	Dec 2011	Dec 2024	Wind
Ivanpah 1	NRG Energy Services	Nipton, CA	198 GWh	Nov 2013	Jan 2026	Solar : 96.2% Natural Gas : 3.8%
Solverde 1	AES Distributed Energy	Lancaster, CA	202 GWh	Nov 2016	Feb 2026	Solar
San Gorgonio Windplant WPP1993	FPL Energy Operating Services, Inc.	North Palm Springs, CA	202 GWh	Nov 2011	Dec 2024	Wind
Lockhart Solar PV II	Terra-Gen Operating Co-Solar	Hinkley, CA	205 GWh	Jun 2023	Feb 2026	Solar
HL Power	HL Power Company	Wendel, CA	205 GWh	Jun 1989	Dec 2024	Wood/Wood Waste Solids : 99.8%
Rosamond South 1	Golden Fields Solar IV, LLC	Rosamond, CA	206 GWh	-	Feb 2026	Solar
University of California San Diego Hybri	University of California San Diego	La Jolla, CA	209 GWh	Jun 2001	Feb 2026	Natural Gas
Coachella Hills Wind	Terra-Gen Operating Co-Wind	Palm Springs, CA	209 GWh	Feb 2021	Feb 2026	Wind
Copper Mountain Solar 4, LLC	Consolidated Edison Development Inc.	Boulder City, NV	211 GWh	Aug 2016	Dec 2024	Solar
Strauss Wind Farm	Strauss Wind LLC	Lompoc, CA	213 GWh	Nov 2023	Feb 2026	Wind
Henrietta Solar Project	Southern Power Co	Lemoore, CA	218 GWh	Jul 2016	Dec 2024	Solar
Kern River Eastridge Cogen	Chevron USA Inc	Bakersfield, CA	219 GWh	May 1988	Feb 2026	Natural Gas
Sycamore Cogeneration	Sycamore Cogeneration Co	Bakersfield, CA	219 GWh	Nov 1987	Nov 2025	Natural Gas
Donnells	Oakdale&South San Joaquin Irrigation D.	None, CA	219 GWh	May 1957	Dec 2024	Water
RE Mustang LLC	MN8 Energy LLC	Lemoore, CA	221 GWh	Jul 2016	Dec 2024	Solar
Caribou 1	Pacific Gas & Electric Co.	Belden, CA	221 GWh	May 1921	Dec 2024	Water
Alta Wind VIII	Nextera Energy Resources	Mojave, CA	222 GWh	Dec 2011	Dec 2024	Wind
Vasco Winds	Vasco Winds, LLC	Livermore, CA	223 GWh	Nov 2011	Dec 2024	Wind
Tiger Creek	Pacific Gas & Electric Co.	Pioneer, CA	225 GWh	May 1931	Dec 2024	Water
Point Wind	Terra-Gen Operating Co-Wind	Tehachapi, CA	226 GWh	Feb 2021	Feb 2026	Wind
Argus Cogen Plant	Searles Valley Minerals Operations Inc.	Trona, CA	227 GWh	Nov 1947	Feb 2026	Bituminous Coal : 92.5% Natural Gas : 7.5%
Ivanpah 2	NRG Energy Services	Nipton, CA	229 GWh	Nov 2013	Feb 2026	Solar : 95.5% Natural Gas : 4.5%
Sandrini Solar 100	EDPR CA Solar Park II LLC	Mettler, CA	230 GWh	Nov 2024	Feb 2026	Solar
Desert Harvest, LLC	Desert Harvest, LLC	Desert Center, CA	231 GWh	Nov 2020	Feb 2026	Solar
Ivanpah 3	NRG Energy Services	Nipton, CA	231 GWh	Nov 2013	Feb 2026	Solar : 96.2% Natural Gas : 3.8%
Pinyon Pine II	Pinyon Pines Wind II, LLC	Mojave, CA	233 GWh	Oct 2012	Dec 2024	Wind
High Winds LLC	FPLE High Winds, LLC	Birds Landing, CA	233 GWh	Jun 2003	Dec 2024	Wind
Brea Expansion Plant	Brea Power II	Brea, CA	235 GWh	Oct 2012	Feb 2026	Landfill Gas
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%
San Pablo Raceway	AES Distributed Energy	Lancaster, CA	237 GWh	Jul 2019	Feb 2026	Solar
Oasis Wind	Terra-Gen Operating Co-Wind	Mojave, CA	238 GWh	Nov 2004	Dec 2024	Wind
Lockhart Solar PV, LLC	Terra-Gen Operating Co-Solar	Hinkley, CA	241 GWh	Nov 1989	Feb 2026	Solar
Pit 6	Pacific Gas & Electric Co.	Montgomery Creek, CA	242 GWh	Jul 1965	Dec 2024	Water
Willow Spring Solar, LLC	Willow Spring Solar LLC	Rosamond, CA	244 GWh	Dec 2018	Feb 2026	Solar
Coso Energy Developers	Coso Operating Co LLC	Inyokern, CA	244 GWh	Nov 1988	Dec 2024	Geothermal
Sky River Wind Energy Center	Sky River Wind LLC	Tehachapi, CA	245 GWh	Jan 1991	Dec 2024	Wind
New-Indy Ontario Mill	New-Indy Ontario LLC	Ontario, CA	245 GWh	May 1985	Feb 2026	Natural Gas
Rabbitbrush Solar, LLC	Leeward Asset Management, LLC	Rosamond, CA	245 GWh	Sep 2022	Feb 2026	Solar
Golden Hills Wind	Golden Hills Wind, LLC	Livermore, CA	247 GWh	Nov 2015	Dec 2024	Wind
Rising Tree Wind Farm	Rising Tree Wind Farm LLC	Mojave, CA	249 GWh	Dec 2014	Dec 2024	Wind
Resurgence Solar	Resurgence Solar	Boron, CA	251 GWh	Jul 2023	Feb 2026	Solar
Northern Orchard Solar PV, LLC	Northern Orchard Solar PV, LLC	Taft, CA	253 GWh	-	Feb 2026	Solar
Salinas River Cogeneration	Salinas River Cogeneration Co	San Ardo, CA	253 GWh	Oct 1991	Feb 2026	Natural Gas
AES Redondo Beach LLC	AES Redondo Beach LLC	Redondo Beach, CA	256 GWh	Sep 1954	Dec 2023	Natural Gas
Antelope Expansion 2	AES Distributed Energy	Lancaster, CA	257 GWh	Nov 2018	Feb 2026	Solar
Quinto Solar PV Project	Arevon Energy, Inc.	Gustine, CA	257 GWh	Oct 2015	Dec 2024	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#26	Arizona Public Service Company	24.6 TWh	92
#54	Arlington Valley, LLC	3.3 TWh	1
#37	Balancing Authority of Northern California	14.1 TWh	87
#48	Imperial Irrigation District	6.3 TWh	66
#30	Los Angeles Department of Water and Power	18.4 TWh	124
#22	Nevada Power Company	36.8 TWh	139
#64	New Harquahala Generating Company, LLC	32.9 GWh	1
#19	Salt River Project Agricultural Improvement and Power District	60.0 TWh	48
#57	Turlock Irrigation District	2.0 TWh	11
#39	Western Area Power Administration - Desert Southwest Region	10.3 TWh	33

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#3	Electric Reliability Council of Texas, Inc.	488.2 TWh	1,313
#5	Southwest Power Pool	302.9 TWh	835
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#7	California Independent System Operator	176.8 TWh	2,075
#9	Tennessee Valley Authority	163.1 TWh	204
#10	Florida Power & Light Co.	150.9 TWh	187
#12	New York Independent System Operator	134.4 TWh	1,211
#13	Duke Energy Carolinas	112.5 TWh	565
#15	ISO New England	111.1 TWh	1,577
#16	Bonneville Power Administration	88.3 TWh	163