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
Sandrini Solar 200	EDPR CA Solar Park LLC	Mettler, CA	484 GWh	Nov 2024	Jul 2026	Solar
Santa Barbara ReSource Center	County of Santa Barbara - (CA)	Goleta, CA	9 GWh	May 2021	Dec 2025	Other Biomass Gas
Santa Cruz Energy	Santa Cruz Energy LLC	Santa Cruz, CA	9 GWh	Oct 2009	Dec 2025	Landfill Gas
Santa Fe Springs Rooftop Solar BLDG H	Golden Springs Development Company LLC	Santa Fe Springs, CA	2 GWh	Feb 2015	Dec 2025	Solar
Santa Fe Springs Rooftop Solar BLDG M	Golden Springs Development Company LLC	Santa Fe Springs, CA	3 GWh	Feb 2015	Dec 2025	Solar
Santa Rita Jail Fuel Cell	SRJFC, LLC	Dublin, CA	8 GWh	Nov 2016	Dec 2025	Natural Gas
Santa Rita Jail Hybrid	County of Alameda GSA - (CA)	Dublin, CA	10 GWh	Aug 2001	Dec 2025	Natural Gas : 77.7% Solar : 22.3%
Santa Rosa Junior College Petaluma Solar	Sonoma County Junior College District	Petaluma, CA	2 GWh	Jun 2018	Dec 2025	Solar
SB Water Reclamation Fuel Cell	San Bernardino Fuel Cell, LLC	San Bernardino, CA	8 GWh	May 2021	Dec 2025	Other Biomass Gas : 79.3% Natural Gas : 20.7%
SC 1 Data Center, Phase 2	Xeres Ventures LLC	Santa Clara, CA	267 MWh	Aug 2011	Jul 2026	Distillate Fuel Oil
Scarlet II Hybrid	EDPR Scarlet II LLC	Cantua Creek, CA	369 GWh	Nov 2024	Jul 2026	Solar
Scarlet Solar (CA)	EDP Renewables North America LLC	Fresno, CA	480 GWh	May 2024	Jul 2026	Solar
SCC - San Jose	Bloom Energy	San Jose, CA	8 GWh	Feb 2014	Dec 2025	Natural Gas
SCCCD - Clovis Community College	Forefront Power, LLC	Fresno, CA	2 GWh	Nov 2018	Nov 2025	Solar
SCCCD - Fresno Community College	Forefront Power, LLC	Fresno, CA	4 GWh	Sep 2018	Nov 2025	Solar
SCDA Solar 1	SCDA Solar 1, LLC	Sacramento, CA	14 GWh	Sep 2017	Dec 2025	Solar
SCE-Snowline-Duncan Road (North)	SunEdison LLC	Phelan, CA	3 GWh	Sep 2014	Dec 2025	Solar
SCE-Snowline-Duncan Road (South)	SunEdison LLC	Phelan, CA	2 GWh	Sep 2014	Dec 2025	Solar
SCE-Snowline-White Rd (Central)	SunEdison LLC	Phelan, CA	3 GWh	Oct 2014	Dec 2025	Solar
SCE-Snowline-White Road (North)	SunEdison LLC	Phelan, CA	3 GWh	Oct 2014	Dec 2025	Solar
SCE-Snowline-White Road (South)	SunEdison LLC	Phelan, CA	3 GWh	Oct 2014	Dec 2025	Solar
Scott Flat	Nevada Irrigation District	Nevada City, CA	4 GWh	Jan 1985	Oct 2025	Water
SCU000 El Camino Real Fuel Cell	2016 ESA Project Company, LLC	Santa Clara, CA	12 GWh	Nov 2018	Dec 2025	Natural Gas
SCV Water - Gladbach Water Treatment Plant Phases I and II	SCV Water	Santa Clara, CA	858 MWh	Nov 2014	Oct 2025	Solar
SDCCD - Miramar	CleanCapital Holdings	San Diego, CA	1 GWh	Jan 2011	Dec 2025	Solar
SDCWA - Twin Oaks	CleanCapital Holdings	San Marcos, CA	2 GWh	Apr 2011	Dec 2025	Solar
SE Athos II, LLC	SE Athos II, LLC	Desert Center, CA	516 GWh	Nov 2021	Jul 2026	Solar
Sealed Air Madera Solar Project	Sealed Air Corporation	Madera, CA	7 GWh	Apr 2022	Dec 2025	Solar
SeaWorld Aquatica	Onyx Asset Services Group	Chula Vista, CA	2 GWh	Apr 2018	Dec 2025	Solar
Sentinel Energy Center, LLC	Sentinel Energy Center LLC	Desert Hot Springs, CA	165 GWh	Apr 2013	Jul 2026	Natural Gas
SEPV 1	CVI CleanCapital Solar 1 LLC	Palmdale, CA	3 GWh	Apr 2012	Dec 2025	Solar
SEPV 18	AES Distributed Energy	Palmdale, CA	4 GWh	Dec 2015	Dec 2025	Solar
SEPV 2	CVI CleanCapital Solar 1 LLC	Twentynine Palms, CA	3 GWh	May 2012	Dec 2025	Solar
SEPV 8	Deriva Energy	Twentynine Palms, CA	32 GWh	May 2013	Dec 2025	Solar
SEPV Cuyama Hybrid	SEPV Cuyama, LLC	New Cuyama, CA	3 GWh	Nov 2023	Dec 2025	Solar
SEPV Mojave West	AES Distributed Energy	Mojave, CA	53 GWh	May 2016	Dec 2025	Solar
SEPV Palmdale East	AES Distributed Energy	Palmdale, CA	24 GWh	Jul 2015	Dec 2025	Solar
SEPV Sierra	SEPV Sierra, LLC	Lancaster, CA	5 GWh	Mar 2020	Dec 2025	Solar
SEPV9 Power Plant	Deriva Energy	Twentynine Palms, CA	23 GWh	May 2013	Dec 2025	Solar
SF Azalea, LLC	Idemitsu Renewables	Lost Hills, CA	107 GWh	Nov 2025	Jul 2026	Solar
SF Southeast Cogen Plant	City & County of San Francisco - (CA)	San Francisco, CA	341 MWh	May 2002	Dec 2025	Other Biomass Gas
SFDK Solar	AES Distributed Energy	Vallejo, CA	10 GWh	Nov 2019	Dec 2025	Solar
Shafter Solar LLC	Shafter Solar LLC	Bakersfield, CA	41 GWh	Apr 2015	Dec 2025	Solar
Shasta Solar Farm	Ignite Solar Holdings LLC	Fall River Mills, CA	6 GWh	Feb 2014	Dec 2025	Solar
Sheep Creek Community Solar Farm	Phelan Solar LLC	El Mirage, CA	6 GWh	Jul 2023	Dec 2025	Solar
Shelter Creek Condominiums Solar	Vista Solar, Inc.	San Bruno, CA	3 GWh	Jan 2020	Dec 2025	Solar
Shiloh I Wind Project	Avangrid Power LLC	Rio Vista, CA	400 GWh	Apr 2006	Dec 2025	Wind
Shiloh III Wind Project LLC	EDF Renewable Asset Holdings, Inc.	Birds Landing, CA	282 GWh	Nov 2011	Dec 2025	Wind
Shiloh IV Wind Project LLC	EDF Renewable Asset Holdings, Inc.	Birds Landing, CA	293 GWh	Nov 2012	Dec 2025	Wind
Shiloh Wind Project 2 LLC	EDF Renewable Asset Holdings, Inc.	Birds Landing, CA	369 GWh	Dec 2008	Dec 2025	Wind
Sierra Nevada Brewing Co Hybrid	Sierra Nevada Brewing Co	Chico, CA	11 GWh	Apr 2005	Dec 2025	Natural Gas : 65.7% Solar : 19.5% Other Biomass Gas : 14.9%
Sierra Pacific Burney Facility	Sierra Pacific Industries	Burney, CA	95 GWh	Sep 1986	Dec 2025	Wood/Wood Waste Solids
Sierra Pacific Chinese Camp	Sierra Pacific Industries	Chinese Camp, CA	5 GWh	Feb 2022	Dec 2025	Solar
Sierra Pacific Industries (2042-RD)	Sierra Pacific Industries	Red Bluff, CA	17 GWh	Apr 2020	Dec 2025	Solar
Sierra Pacific Lincoln Facility	Sierra Pacific Industries	Lincoln, CA	80 GWh	Feb 2004	Dec 2025	Wood/Wood Waste Solids
Sierra Pacific Quincy Facility	Sierra Pacific Industries	Quincy, CA	202 GWh	Nov 1986	Dec 2025	Wood/Wood Waste Solids
Sierra Pacific Sonora	Sierra Pacific Industries	Standard, CA	43 GWh	Jan 2001	Dec 2025	Wood/Wood Waste Solids
Sierra Solar Greenworks	AES Distributed Energy	Lancaster, CA	41 GWh	Oct 2015	Dec 2025	Solar
Signal Hill West Unit	Signal Hill Petroleum, Inc	Signal Hill, CA	39 GWh	Jun 2004	Jul 2026	Other Gas
Silicon Valley Clean Water	Silicon Valley Clean Water	Redwood City, CA	8 GWh	Feb 2015	Dec 2025	Other Biomass Gas : 95.0% Natural Gas : 5.0%
Silveira Ranch Road Solar	Silveira Ranch Road Solar	Novato, CA	5 GWh	Feb 2021	Dec 2025	Solar
Silver State Solar Power South	Silver State Solar Power South, LLC	Primm Valley, NV	621 GWh	Oct 2015	Jul 2026	Solar
Site 980 65	Madera-Chowchilla Power Auth	Madera, CA	2 GWh	Jan 1985	Jun 2025	Water
SJ/SC WPCP	San Jose/Santa Clara Water P C	San Jose, CA	67 GWh	Jan 1953	Jul 2026	Natural Gas : 54.3% Other Biomass Gas : 45.6%
Sky River Wind Energy Center	Sky River Wind LLC	Tehachapi, CA	211 GWh	Jan 1991	Dec 2025	Wind
Slate Hybrid	MN8 Energy LLC	Stratford, CA	690 GWh	Oct 2021	Jul 2026	Solar
Sly Creek	South Feather Water and Power Agency	Forbestown, CA	27 GWh	Jun 1983	Dec 2025	Water
Soboba Community Solar Project	Soboba Band of Luiseno Indians	San Jacinto, CA	4 GWh	Jul 2016	Dec 2025	Solar
Solano County Cogen Plant	Solano County - (CA)	Fairfield, CA	8 GWh	May 1989	Dec 2025	Natural Gas
Solano Wind	Sacramento Municipal Util Dist	Rio Vista, CA	708 GWh	May 1994	Jul 2026	Wind
Solar Blue	Westlands Solar Blue	Lemoore, CA	645 GWh	Nov 2023	Jul 2026	Solar
Solar Blythe 2	NRG Solar Blythe II LLC	Blythe, CA	41 GWh	Mar 2017	Dec 2025	Solar
Solar Blythe LLC	NRG Solar Blythe	Blythe, CA	39 GWh	Nov 2009	Dec 2025	Solar
Solar Borrego I	NRG Solar Borrego I	Borrego Springs, CA	61 GWh	Jan 2013	Dec 2025	Solar
Solar Gen 2 Solar Facility	Southern Power Co	Calipatria, CA	377 GWh	Oct 2014	Dec 2025	Solar
Solar Oasis LLC	Solar Oasis, LLC	Palmdale, CA	53 GWh	Dec 2015	Dec 2025	Solar
Solar Photovoltaic Project #42	Southern California Edison Co	Tulare, CA	6 GWh	Oct 2012	Dec 2025	Solar
Solar Star 1	Solar Star California XIX, LLC	Rosamond, CA	880 GWh	Feb 2014	Jul 2026	Solar
Solar Star 2	Solar Star California XX, LLC	Rosamond, CA	764 GWh	Feb 2014	Jul 2026	Solar
Solar Star California, XLI, LLC	MN8 Energy LLC	Rosamond, CA	135 GWh	Nov 2016	Jul 2026	Solar
Solar Star California, XLIV, LLC	MN8 Energy LLC	Pearblossom, CA	23 GWh	Nov 2016	Dec 2025	Solar
Solar Star Palo Alto I, LLC	DG 1 Acquisition Co., LLC	Palo Alto, CA	2 GWh	Jul 2019	Dec 2025	Solar
Solverde 1	AES Distributed Energy	Lancaster, CA	197 GWh	Nov 2016	Jul 2026	Solar
Sonoma California Geothermal	Geysers Power Co LLC	Middletown, CA	436 GWh	Nov 1983	Dec 2025	Geothermal
Sonoma Central Landfill Phase I	County of Sonoma Dept of Trnsp	Petaluma, CA	583 MWh	Jun 1993	Dec 2025	Landfill Gas
Sonoma Central Landfill Phase II	County of Sonoma Dept of Trnsp	Petaluma, CA	2 GWh	May 1996	Dec 2025	Landfill Gas
Sonora 1	CleanCapital Holdings	Jamestown, CA	858 MWh	Nov 2013	Dec 2025	Solar
Soscol Ferry Solar	Soscol Ferry Solar	Napa, CA	4 GWh	Nov 2020	Dec 2025	Solar
South	Pacific Gas & Electric Co.	Manton, CA	11 GWh	Nov 1979	Dec 2025	Water
South Belridge Cogeneration Facility	AERA Energy LLC	McKittrick, CA	475 GWh	Nov 1985	Jul 2026	Natural Gas
South County Detention Center Solar	SoCore Energy LLC	Porterville, CA	2 GWh	Oct 2019	Dec 2025	Solar
Southeast Kern River Cogen	Chevron USA Inc	Bakersfield, CA	43 GWh	Jan 1989	Jul 2026	Natural Gas
Spaulding 1	Pacific Gas & Electric Co.	Emigrant Gap, CA	17 GWh	Apr 1928	Dec 2025	Water
Spaulding 2	Pacific Gas & Electric Co.	Emigrant Gap, CA	21 MWh	Jun 1928	Nov 2025	Water
Spaulding 3	Pacific Gas & Electric Co.	Emigrant Gap, CA	17 GWh	Jan 1929	Dec 2025	Water
SPI Anderson 2	Sierra Pacific Industries	Anderson, CA	122 GWh	Jul 2015	Dec 2025	Wood/Wood Waste Solids : 99.3% Natural Gas : 0.7%
Spicer Meadow Project	Northern California Power Agny	Murphys, CA	14 GWh	Oct 1989	Dec 2025	Water
Spring Gap	Pacific Gas & Electric Co.	Long Barn, CA	12 GWh	Aug 1921	Dec 2025	Water
Springs Generating Station	City of Riverside - (CA)	Riverside, CA	878 MWh	Jun 2002	Dec 2025	Natural Gas
Springville Hydroelectric	Calleguas Mun Water District	Camarillo, CA	659 MWh	Feb 1994	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