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	Jul 2026
Annual Generation	169.4 TWh
Power Plants	2,135
Utilities	988
Ranked #7 out of 64 in terms of net annual generation
Ranked #12 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 34% Solar \| 30% Water \| 12.4% Wind \| 11.3% Nuclear \| 11%

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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
Forbestown	South Feather Water and Power Agency	Forbestown, CA	115 GWh	Sep 1963	Dec 2025	Water
Alpine Solar	Alpine BESS LLC	Lancaster, CA	114 GWh	Jan 2013	Dec 2025	Solar
Mesa Wind Power LLC	Mesa Wind Power LLC	North Palm Springs, CA	114 GWh	Oct 1984	May 2026	Wind
UCI Facilities Management Central Plant	University of California Irvine	Irvine, CA	114 GWh	Jun 2007	May 2026	Natural Gas
Salt Springs	Pacific Gas & Electric Co.	Pioneer, CA	113 GWh	May 1931	Dec 2025	Water
Cabazon Wind Partners	Shell Wind Energy Inc.	Cabazon, CA	108 GWh	Sep 2002	Dec 2025	Wind
Elevation Solar C	AES Distributed Energy	Lancaster, CA	107 GWh	Nov 2016	May 2026	Solar
Little Bear 5	Little Bear Solar 5, LLC (Longroad)	Mendota, CA	107 GWh	Nov 2020	May 2026	Solar
Ocotillo Wells	Conductive Power	Borrego Springs, CA	106 GWh	Aug 2023	May 2026	Solar
Tulloch	Oakdale&South San Joaquin Irrigation D.	Jamestown, CA	103 GWh	May 1958	Dec 2025	Water
Burney Forest Products	Burney Forest Products, A Joint Venture	Burney, CA	103 GWh	Sep 1989	Dec 2025	Wood/Wood Waste Solids : 69.9% Natural Gas : 30.1%
Pacific-Ultrapower Chinese Station	IHI Power Services Corp	Jamestown, CA	102 GWh	Sep 1986	May 2026	Wood/Wood Waste Solids : 98.5% Gaseous Propane : 1.5%
Kern River Cogeneration	Kern River Cogeneration Co	Bakersfield, CA	100 GWh	Jun 1985	May 2026	Natural Gas
Borden Solar Farm	41MB 8me, LLC	Madera, CA	99 GWh	May 2020	May 2026	Solar
Edwards Sanborn S1	Terra-Gen Operating Co-Hybrid	Mojave, CA	98 GWh	Feb 2022	May 2026	Solar
Buena Vista Energy LLC	Leeward Asset Management, LLC	Byron, CA	96 GWh	Nov 2006	Dec 2025	Wind
FPL Energy Montezuma Winds LLC	FPL Energy Montezuma Wind	Birds Landing, CA	96 GWh	Oct 2010	Dec 2025	Wind
Sierra Pacific Burney Facility	Sierra Pacific Industries	Burney, CA	95 GWh	Sep 1986	Dec 2025	Wood/Wood Waste Solids
85 B	Wind Wall 1 LLC	Tehachapi, CA	93 GWh	Dec 1984	Dec 2025	Wind
Edwards Sanborn S4	Terra-Gen Operating Co-Hybrid	Mojave, CA	93 GWh	Oct 2022	May 2026	Solar
Muck Valley Hydroelectric	Malacha Hydro Limited Partnership	NA, CA	90 GWh	Nov 1988	Dec 2025	Water
CM48	RWE Clean Energy	Boulder City, NV	90 GWh	May 2010	Dec 2025	Solar
Elk Hills Cogen	California Resources Elk Hills LLC	Tupman, CA	88 GWh	Oct 1994	May 2026	Natural Gas
Mammoth G2	Ormat Nevada Inc	Mammoth Lakes, CA	84 GWh	Nov 1990	Dec 2025	Geothermal
Sand Bar Power Plant	Tri-Dam Power Authority	Stanislaus Ntl. Fores, CA	83 GWh	Apr 1986	Dec 2025	Water
Aidlin Geothermal Power Plant	Geysers Power Co LLC	Middletown, CA	82 GWh	Apr 1989	Dec 2025	Geothermal
Ameresco Ox Mountain	AMERESCO Ox Mountain Energy LLC	Half Moon Bay, CA	81 GWh	Nov 2008	May 2026	Landfill Gas
Edwards Sanborn S3	Terra-Gen Operating Co-Hybrid	Mojave, CA	81 GWh	Feb 2022	May 2026	Solar
Kings River PH	Pacific Gas & Electric Co.	Balch Camp, CA	81 GWh	Feb 1962	Dec 2025	Water
Mountain View III	Avangrid Power LLC	North Palm Springs, CA	81 GWh	Nov 2003	Dec 2025	Wind
Five Points Solar Park	Boralex US Operations LLC	Five Points, CA	81 GWh	Aug 2016	Dec 2025	Solar
El Dorado	El Dorado Irrigation District	Pollock Pines, CA	81 GWh	Dec 1923	Dec 2025	Water
Sierra Pacific Lincoln Facility	Sierra Pacific Industries	Lincoln, CA	80 GWh	Feb 2004	Dec 2025	Wood/Wood Waste Solids
Mesa Wind Repower	Mesa Wind Repower	Whitewater, CA	80 GWh	May 2024	Dec 2024	Wind
Pardee	East Bay Municipal Util Dist - (CA)	Valley Springs, CA	80 GWh	Jun 1930	Dec 2025	Water
Voyager Wind IV	Terra-Gen Operating Co-Wind	Mojave, CA	79 GWh	Nov 2018	Dec 2025	Wind
AM Wind Repower	AM Wind Repower LLC	Whitewater, CA	76 GWh	Feb 2025	May 2026	Wind
Central 40	Central 40, LLC	Newman, CA	76 GWh	Jan 2021	May 2026	Solar
Berry NMW Cogens	Berry Petroleum Co	Bakersfield, CA	76 GWh	Oct 2017	Dec 2025	Natural Gas
Mammoth G3	Ormat Nevada Inc	Mammoth Lakes, CA	75 GWh	Nov 1990	Dec 2025	Geothermal
Friant Hydro Facility	Friant Power Authority	Friant, CA	73 GWh	Mar 1985	Dec 2025	Water
Narrows PH	Yuba County Water Agency - (CA)	Grass Valley, CA	73 GWh	Nov 1942	Dec 2025	Water
Torrance Refining Company, LLC	Torrance Refining Company, LLC	Torrance, CA	73 GWh	Aug 1983	May 2026	Other Gas : 61.0% Waste Heat : 39.0%
CP Kelco San Diego Plant	CP Kelco US Inc.	San Diego, CA	71 GWh	Sep 1983	May 2026	Natural Gas
Balch 1	Pacific Gas & Electric Co.	Balch Camp, CA	71 GWh	Jan 1927	Dec 2025	Water
85 A	Wind Wall 1 LLC	Tehachapi, CA	71 GWh	Dec 1984	Dec 2025	Wind
SJ/SC WPCP	San Jose/Santa Clara Water P C	San Jose, CA	69 GWh	Jan 1953	May 2026	Natural Gas : 54.1% Other Biomass Gas : 45.7%
MCAGCC Cogen Plant	DOD USMC Marine Air Ground Combat	Twentynine Palms, CA	69 GWh	Jan 2003	Dec 2024	Natural Gas
Kelly Ridge	South Feather Water and Power Agency	Oroville, CA	69 GWh	Aug 1963	Dec 2025	Water
SF Azalea, LLC	Idemitsu Renewables	Lost Hills, CA	68 GWh	Nov 2025	May 2026	Solar
Parnassus Central Utility Plant	University of California-San Francisco	San Francisco, CA	67 GWh	Dec 1995	May 2026	Natural Gas
Mojave 16/17/18	Terra-Gen Operating Co-Wind	Mojave, CA	66 GWh	Nov 1989	Dec 2025	Wind
Dutch Flat	Pacific Gas & Electric Co.	Alta, CA	66 GWh	Feb 1943	Dec 2025	Water
Alamo	California Dept. of Water Resources	Pearblossom, CA	66 GWh	Jun 1986	Dec 2025	Water
Chicago Park	Nevada Irrigation District	Colfax, CA	65 GWh	Oct 1965	Dec 2025	Water
Chevron - Lost Hills Hybrid	MN8 Energy LLC	Lost Hills, CA	64 GWh	Mar 2020	May 2026	Solar
Glass House Camarillo Cultivation	Glass House Camarillo Cultivation	Camarillo, CA	64 GWh	Jul 2012	Dec 2025	Natural Gas
Little Bear Solar 1, LLC	Little Bear Solar 1, LLC (Longroad)	Mendota, CA	64 GWh	Nov 2020	May 2026	Solar
Greenleaf 2 Power Plant	Greenleaf Energy LLC	Yuba City, CA	64 GWh	Sep 1989	May 2026	Natural Gas
Covanta Stanislaus Energy	Covanta Stanislaus Inc	Crows Landing, CA	62 GWh	Aug 1988	Dec 2024	Non-biogenic Municipal Solid Waste : 50.0% Biogenic Municipal Solid Waste : 40.9% Distillate Fuel Oil : 9.1%
Solar Borrego I	NRG Solar Borrego I	Borrego Springs, CA	61 GWh	Jan 2013	Dec 2025	Solar
McKittrick Cogen	Chevron USA Inc	McKittrick, CA	61 GWh	May 2012	Dec 2025	Natural Gas
Loma Linda University Cogen	Loma Linda University	Loma Linda, CA	60 GWh	Jan 1980	May 2026	Natural Gas
California Institute of Technology	California Institute-Technology	Pasadena, CA	60 GWh	Jul 2003	May 2026	Natural Gas
Cuyama Solar, LLC	Cuyama Solar, LLC	Cuyama, CA	59 GWh	Oct 2017	May 2026	Solar
Adelanto Solar, LLC	Adelanto Solar, LLC	Adelanto, CA	59 GWh	Aug 2015	Dec 2025	Solar
Lost Hills/Blackwell	Southern Power Co	Lost Hills, CA	59 GWh	Mar 2015	Dec 2025	Solar
Edwards Sanborn E3	Terra-Gen Operating Co-Hybrid	Mojave, CA	58 GWh	Nov 2021	May 2026	Solar
RB Inyokern Solar WDAT 1203 (CSG)	Dimension Energy LLC	Ridgecrest, CA	58 GWh	Nov 2024	Dec 2025	Solar
Forks of Butte Hydro Project	Hypower Energy, LLC	Magalia, CA	58 GWh	Feb 1992	Dec 2025	Water
P66 Rodeo Solar	P66 Rodeo Solar	Rodeo, CA	58 GWh	Mar 2023	May 2026	Solar
TA-High Desert LLC	TA-High Desert LLC	Lancaster, CA	58 GWh	Feb 2013	Dec 2025	Solar
Alpaugh 50	RWE Clean Energy	Alpaugh, CA	57 GWh	Nov 2012	Dec 2025	Solar
Oak Creek Energy Systems I	Terra-Gen Operating Co-Wind	Mojave, CA	57 GWh	May 1982	Dec 2025	Wind
RE Garland A	Southern Power Co	Rosamond, CA	57 GWh	Aug 2016	Dec 2025	Solar
San Diego State University	San Diego State University	San Diego, CA	57 GWh	Aug 2002	May 2026	Natural Gas : 97.4% Solar : 2.6%
Beardsley	Oakdale&South San Joaquin Irrigation D.	None, CA	56 GWh	Apr 1957	Dec 2025	Water
Potrero Hills Energy Producers	Potrero Hills Energy Producers, LLC	Suisun City, CA	56 GWh	Mar 2016	Dec 2025	Landfill Gas
Summer Solar LLC	AES Distributed Energy	Lancaster, CA	56 GWh	Jun 2016	Dec 2025	Solar
Gaskell West 1 Solar Facility	Southern Power Co	Lancaster, CA	56 GWh	Feb 2018	Dec 2025	Solar
Catalina Solar 2, LLC	Onward Energy	Rosamond, CA	55 GWh	Jul 2015	Dec 2025	Solar
Kingbird B Solar, LLC	Arevon Energy, Inc.	Rosamond, CA	55 GWh	Mar 2016	Dec 2025	Solar
Antelope DSR 3	AES Distributed Energy	Lancaster, CA	55 GWh	Aug 2019	Dec 2025	Solar
Sunray 2	Sunray Energy 2, LLC	Daggett, CA	55 GWh	Nov 1984	Dec 2025	Solar
Longboat Solar, LLC	Duke Energy Renewables Services	Barstow, CA	54 GWh	Nov 2016	Dec 2025	Solar
Whitney Point Solar	Whitney Point Solar, LLC	Five Points, CA	54 GWh	Feb 2017	Dec 2025	Solar
Rising Tree Wind Farm II	Rising Tree Wind Farm II LLC	Mojave, CA	54 GWh	Dec 2014	Dec 2025	Wind
Cymric 36W Cogen	Chevron USA Inc	McKittrick, CA	53 GWh	Sep 1982	Dec 2025	Natural Gas
Axium Modesto Solar	Axium US Solar Holdings LLC	Modesto, CA	53 GWh	Nov 2012	Dec 2025	Solar
Lone Valley Solar Park II LLC	Lone Valley Solar Park II LLC	Lucerne Valley, CA	53 GWh	Nov 2014	Dec 2025	Solar
Solar Oasis LLC	Solar Oasis, LLC	Palmdale, CA	53 GWh	Dec 2015	Dec 2025	Solar
Portal Ridge Solar B, LLC	Portal Ridge Solar, LLC	Lancaster, CA	53 GWh	Jan 2017	Dec 2025	Solar
SEPV Mojave West	AES Distributed Energy	Mojave, CA	53 GWh	May 2016	Dec 2025	Solar
CED Ducor 1	RWE Clean Energy	Ducor, CA	52 GWh	Nov 2016	Dec 2025	Solar
Western Antelope Blue Sky B	AES Distributed Energy	Lancaster, CA	52 GWh	Nov 2016	Dec 2025	Solar
Rio Bravo Solar 1 LLC	Duke Energy Renewables Services	McKittrick, CA	52 GWh	Nov 2016	Dec 2025	Solar
Atwell Island West Solar	RWE Clean Energy	Alpaugh, CA	52 GWh	Apr 2015	Dec 2025	Solar
CED Ducor 4	RWE Clean Energy	Ducor, CA	52 GWh	Nov 2016	Dec 2025	Solar
San Gorgonio Farms Wind Farm	San Gorgonio Farms Inc	Whitewater, CA	52 GWh	Feb 1983	Dec 2025	Wind
Rio Bravo Solar II LLC	Duke Energy Renewables Services	McKittrick, CA	52 GWh	Nov 2016	Dec 2025	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#25	Arizona Public Service Company	25.2 TWh	100
#54	Arlington Valley, LLC	3.2 TWh	1
#38	Balancing Authority of Northern California	13.7 TWh	90
#49	Imperial Irrigation District	6.2 TWh	66
#29	Los Angeles Department of Water and Power	18.8 TWh	131
#22	Nevada Power Company	36.8 TWh	143
#51	PUD No. 1 of Douglas County	4.4 TWh	4
#19	Salt River Project Agricultural Improvement and Power District	60.3 TWh	49
#57	Turlock Irrigation District	1.9 TWh	11
#40	Western Area Power Administration - Desert Southwest Region	10.4 TWh	34

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#3	Electric Reliability Council of Texas, Inc.	494.1 TWh	1,471
#5	Southwest Power Pool	306.8 TWh	856
#6	Southern Company Services, Inc. - Trans	253.5 TWh	422
#7	California Independent System Operator	169.4 TWh	2,135
#9	Tennessee Valley Authority	163.4 TWh	207
#10	Florida Power & Light Co.	152.2 TWh	187
#12	New York Independent System Operator	134.3 TWh	1,299
#13	Duke Energy Carolinas	112.6 TWh	577
#15	ISO New England	111.1 TWh	1,629
#16	Bonneville Power Administration	91.6 TWh	167