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
Venable Solar 2	Madison Energy Investments LLC	Blythe, CA	3 GWh	Mar 2015	Sep 2025	Solar
Venable Solar 1	Madison Energy Investments LLC	Blythe, CA	4 GWh	Mar 2015	Dec 2025	Solar
Vega Solar	Vega Solar, LLC	Los Banos, CA	49 GWh	Feb 2015	Dec 2025	Solar
Vasco Winds	Vasco Winds, LLC	Livermore, CA	234 GWh	Nov 2011	Oct 2025	Wind
Vandenberg Solar Project	MN8 Energy LLC	Vandenberg Airforce B, CA	39 GWh	Nov 2017	Dec 2025	Solar
Van der Kooi Dairy Solar Array	Maas Energy Works	Riverdale, CA	3 GWh	Mar 2021	Dec 2025	Solar
Van der Hoek Solar Array/ Dairy	Maas Energy Works	Helm, CA	667 MWh	Jul 2017	Dec 2025	Solar
Valley Center 2	MN8 Energy LLC	Valley Center, CA	8 GWh	Nov 2013	Dec 2025	Solar
Valley Center 1	MN8 Energy LLC	Valley Center, CA	4 GWh	Nov 2013	Dec 2025	Solar
Valley Center	Heelstone Energy Holdings, LLC	Valley Center, CA	4 GWh	Nov 2016	Dec 2025	Solar
Vallecitos Water District	CleanCapital Holdings	San Marcos, CA	3 GWh	Aug 2021	Dec 2025	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%
Valentine Solar, LLC	EDF Renewable Asset Holdings, Inc.	Rosamond, CA	267 GWh	Oct 2019	Jul 2026	Solar
Vacaville Hospital	KP Vacaville Solar, LLC	Vacaville, CA	2 GWh	Nov 2019	Dec 2025	Solar
Vaca Dixon Solar Station	Pacific Gas & Electric Co.	Vacaville, CA	3 GWh	Nov 2009	Dec 2025	Solar
USPS PV	Altus Power America Management, LLC	Los Angeles, CA	11 GWh	Jun 2017	Dec 2025	Solar
US-TOPCO (Soccer Center)	Tesla Inc.	Lancaster, CA	4 GWh	Nov 2016	Dec 2025	Solar
US Borax	U S Borax Inc	Boron, CA	263 GWh	Jun 1984	Jul 2026	Natural Gas
University of the Pacific	The Greater Light USA LLC	Stockton, CA	6 GWh	Apr 2022	Dec 2025	Solar
University of San Diego	Bloom Energy 2009 PPA	San Diego, CA	8 GWh	Nov 2016	Dec 2025	Natural Gas
University of California Santa Cruz	University of California Santa Cruz	Santa Cruz, CA	34 GWh	Aug 2013	Dec 2025	Natural Gas : 91.4% Solar : 8.6%
University of California San Diego Hybri	University of California San Diego	La Jolla, CA	227 GWh	Jun 2001	Jul 2026	Natural Gas
Univ of San Francisco Cogen	University of San Francisco	San Francisco, CA	5 GWh	Aug 1987	Dec 2024	Natural Gas
Univ of California San Diego Solar	University of California San Diego	La Jolla, CA	4 GWh	Nov 2008	Dec 2025	Solar
UCI Facilities Management Central Plant	University of California Irvine	Irvine, CA	114 GWh	Jun 2007	Jul 2026	Natural Gas
UC Riverside Lots 30 & 32	MN8 Energy LLC	Riverside, CA	7 GWh	Nov 2017	Dec 2025	Solar
UC Merced Solar Hybrid	MN8 Energy LLC	Merced, CA	8 GWh	Nov 2018	Dec 2025	Solar
UC Davis South Campus	Solar Star California XXXII, LLC	Davis, CA	12 GWh	Feb 2015	Dec 2025	Solar
TWC	Bravo REC Management LLC	Tulare, CA	2 GWh	Jul 2024	Dec 2025	Solar
Tulloch	Oakdale&South San Joaquin Irrigation D.	Jamestown, CA	103 GWh	May 1958	Dec 2025	Water
Tule Wind LLC	Avangrid Power LLC	Boulevard, CA	346 GWh	Nov 2017	Jul 2026	Wind
Tulare Success Power Project	Lower Tule River Irrgtn Dist	Porterville, CA	1 GWh	Nov 1989	Aug 2025	Water
Tulare CSG LLC	Dimension Energy LLC	Tulare, CA	6 GWh	Sep 2024	Dec 2025	Solar
Tulare BioMAT Fuel Cell	Central CA Fuel Cell 2, LLC	Tulare, CA	6 GWh	Nov 2019	Dec 2025	Other Biomass Gas : 77.3% Natural Gas : 22.7%
Tulare Akers Professional Center	SoCore Energy LLC	Visalia, CA	2 GWh	Oct 2019	Dec 2025	Solar
Tulare 1 and 2	Arevon Energy, Inc.	Tulare, CA	5 GWh	Dec 2013	Dec 2025	Solar
Tropico Solar PV Plant	Arevon Energy, Inc.	Delano, CA	32 GWh	Aug 2016	Dec 2025	Solar
Trona Solar III	Trona Solar III LLC	Trona, CA	5 GWh	Mar 2023	Dec 2025	Solar
Transamerica Pyramid	Transamerica Pyramid Properties LLC	San Francisco, CA	4 MWh	Jun 2007	Dec 2025	Natural Gas
Tranquillity ID	Tranquillity Solar 1, LLC	Tranquillity, CA	2 GWh	Feb 2018	Dec 2025	Solar
Tracy Combined Cycle Power Plant	MRP San Joaquin Energy LLC.	Tracy, CA	669 GWh	Mar 2003	Jul 2026	Natural Gas
Tracy 210	Costco Wholesale	Tracy, CA	21 GWh	Feb 2019	Dec 2025	Natural Gas
Tracy 18 - SLCVA418	Prologis Logistics Services Incorporated	Tracy, CA	182 MWh	Sep 2025	Dec 2025	Solar
TPC Windfarms LLC	Terra-Gen Operating Co-Wind	Mojave, CA	42 GWh	Nov 1986	Dec 2025	Wind
Toyota Long Beach Trigen	Long Beach Trigen, LLC	Long Beach, CA	13 GWh	Oct 2023	Dec 2025	Other Biomass Gas
Total Energy Facilities	Los Angeles County Sanitation	Carson, CA	157 GWh	Dec 1985	Dec 2025	Other Biomass Gas : 94.7% Natural Gas : 5.3%
Torrance Refining Company, LLC	Torrance Refining Company, LLC	Torrance, CA	68 GWh	Aug 1983	Jul 2026	Other Gas : 56.6% Waste Heat : 43.4%
Topaz Solar Farm	Topaz Solar Farms LLC	Santa Margarita, CA	974 GWh	Mar 2013	Jul 2026	Solar
Toadtown	Pacific Gas & Electric Co.	Magalia, CA	2 GWh	Mar 1986	Oct 2025	Water
TLR000 Hansen Fuel Cell	2016 ESA Project Company, LLC	Salinas, CA	20 GWh	Aug 2018	Dec 2025	Natural Gas
Titan Solar 1 (CA)	Titan Solar 1, LLC	Borrego Springs, CA	157 GWh	Nov 2020	Jul 2026	Solar
Tipton 2 - (CA)	CleanCapital Holdings	Tipton, CA	3 GWh	Nov 2024	Dec 2025	Solar
Tipton 1 - (CA)	CleanCapital Holdings	Tipton, CA	8 GWh	Nov 2024	Dec 2025	Solar
Tiger Creek	Pacific Gas & Electric Co.	Pioneer, CA	216 GWh	May 1931	Dec 2025	Water
THUMS	THUMS Long Beach Company	Long Beach, CA	158 GWh	Dec 2002	Jul 2026	Natural Gas
Three Forks Water Power Project	Grizzly Mountain Ranch	Zenia, CA	3 GWh	Nov 1984	Dec 2024	Water
Thermo Fisher Pleasanton	TotalEnergies Renewables USA LLC	Pleasanton, CA	1 GWh	Jun 2025	Dec 2025	Solar
Thermalito Diverson Dam	California Dept. of Water Resources	Oroville, CA	10 GWh	Jun 1987	Dec 2025	Water
Thermalito	California Dept. of Water Resources	Oroville, CA	309 GWh	Jan 1968	Jul 2026	Water
Terry 1818-WD	Standard Solar	Wasco, CA	10 GWh	Nov 2024	Dec 2025	Solar
Terra Francesco	Altus Power America Management, LLC	Ontario, CA	2 GWh	Feb 2015	Dec 2025	Solar
Terminus Hydroelectric Project	Eagle Creek Renewable Energy, LLC	Lemon Cove, CA	33 GWh	Feb 1990	Dec 2025	Water
Tequesquite Landfill Solar PV Project	Solar Star California XXXI, LLC	Riverside, CA	11 GWh	Sep 2015	Dec 2025	Solar
Temescal Canyon RV, LLC	Temescal Canyon RV, LLC	Corona, CA	2 GWh	Apr 2011	Dec 2025	Solar
Temescal	Metropolitan Water District of S CA	Corona, CA	14 GWh	Jun 1983	Apr 2025	Water
Tejon Castac Water District Solar	CTMW Solar, LLC	Arvin, CA	4 GWh	Apr 2024	Dec 2025	Solar
Teichert Materials-Teichert Vernalis	Foundation HA Energy Generation, LLC	San Joaquin, CA	2 GWh	Sep 2010	Dec 2025	Wind
Tehachapi Wind Resource II	CalWind Resources Inc	Tehachapi, CA	48 GWh	Dec 1996	Dec 2025	Wind
Tehachapi Wind Resource I	CalWind Resources Inc	Tehachapi, CA	12 GWh	Nov 1984	Dec 2025	Wind
Taylor Farms - Schilling Place	Bloom Energy	Salinas, CA	8 GWh	Jun 2019	Dec 2025	Natural Gas
Taylor Farms	Foundation HA Energy Generation, LLC	Gonzales, CA	4 GWh	Oct 2014	Dec 2025	Wind
Target Woodland Solar Project	MN8 Energy LLC	Woodland, CA	3 GWh	Nov 2018	Dec 2025	Solar
Tahquitz High School	AES Distributed Energy	Hemet, CA	2 GWh	Aug 2012	Dec 2025	Solar
Taft 26C Cogen	Chevron USA Inc	Taft, CA	46 GWh	Jun 1982	Jul 2026	Natural Gas
TA-High Desert LLC	TA-High Desert LLC	Lancaster, CA	58 GWh	Feb 2013	Dec 2025	Solar
TA-Acacia, LLC	Onward Energy	Lancaster, CA	48 GWh	Oct 2014	Dec 2025	Solar
Sycamore Energy LLC	Sycamore Energy LLC	Santee, CA	23 GWh	Mar 2004	Dec 2025	Landfill Gas
Sycamore Cogeneration	Sycamore Cogeneration Co	Bakersfield, CA	144 GWh	Nov 1987	Jun 2026	Natural Gas
Sutter Santa Rosa Solar	Sutter Santa Rosa Solar LLC	Santa Rosa, CA	2 GWh	Aug 2019	Dec 2025	Solar
Sutter Home Winery Westside	REC SHW, LLC	Lodi, CA	295 MWh	Sep 2025	Dec 2025	Solar
Sutter Home Winery TCC	REC SHW, LLC	Paso Robles, CA	2 GWh	Apr 2024	Dec 2025	Solar
Sutter Home Winery GIR	Westbound Solar 3, LLC	American Canyon, CA	2 GWh	Jul 2023	Dec 2025	Solar
Superior Almond Hulling	Renewable Solar, Inc	Cantua Creek, CA	472 MWh	Aug 2024	Dec 2025	Solar
SunZia Wind South	Pattern Operators LP	Corona, NM	2 TWh	-	Jul 2026	Wind
SunZia Wind North	Pattern Operators LP	Clines Corner, NM	462 GWh	-	Jul 2026	Wind
Sunshine Valley Solar	EDP Renewables North America LLC	Armagosa, NV	246 GWh	Nov 2019	Jul 2026	Solar
Sunshine Gas Producers	Sunshine Gas Producers LLC	Sylmar, CA	132 GWh	Jul 2014	Jul 2026	Landfill Gas
Sunset Reservoir North Basin	Deriva Energy	San Francisco, CA	6 GWh	Aug 2010	Dec 2025	Solar
Sunrise Power LLC	Sunrise Power Co LLC	Fellows, CA	2 TWh	May 2001	Jul 2026	Natural Gas
Sunray 3	Sunray Energy 3 LLC	Daggett, CA	37 GWh	Nov 1985	Dec 2025	Solar
Sunray 2	Sunray Energy 2, LLC	Daggett, CA	55 GWh	Nov 1984	Dec 2025	Solar
Sunnyvale City of WPCP	City of Sunnyvale WPCP - (CA)	Sunnyvale, CA	7 GWh	Oct 1997	Dec 2025	Other Biomass Gas : 41.3% Landfill Gas : 36.4% Natural Gas : 22.3%
Sunny Cow Solar, LLC	Headwater Energy, LLC	Bakersfield, CA	5 GWh	Sep 2023	Dec 2025	Solar
SunEdison Walmart Apple Valley DC	SunE M5 Holdings LLC	Apple Valley, CA	715 MWh	Feb 2009	Nov 2025	Solar
SunEdison Walgreens Moreno Valley	SunE WG113 Moreno Valley LLC	Moreno Valley, CA	599 MWh	Aug 2007	Dec 2025	Solar
SunEdison Procter & Gamble Oxnard	SunE U6 Holdings LLC	Oxnard, CA	2 GWh	Sep 2009	Dec 2025	Solar
SunEdison Ironwood State Prison	SunE CPA CDC2 LLC	Blythe, CA	1 GWh	Apr 2008	Dec 2025	Solar
SunEdison Anheuser Busch Fairfield	SunE M5 Holdings LLC	Fairfield, CA	1 GWh	Nov 2008	Dec 2025	Solar
SunE Rochester	SunE Solar XVI Lessor, LLC	Rancho Cucamonga, CA	946 MWh	Jul 2016	Dec 2025	Solar
SunE- E Philadelphia Ontario	SunEdison LLC	Ontario, CA	2 GWh	Feb 2016	Dec 2025	Solar

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