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
SunEdison Walgreens Moreno Valley	SunE WG113 Moreno Valley LLC	Moreno Valley, CA	599 MWh	Aug 2007	Dec 2025	Solar
SunEdison Walmart Apple Valley DC	SunE M5 Holdings LLC	Apple Valley, CA	715 MWh	Feb 2009	Nov 2025	Solar
Sunny Cow Solar, LLC	Headwater Energy, LLC	Bakersfield, CA	5 GWh	Sep 2023	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%
Sunray 2	Sunray Energy 2, LLC	Daggett, CA	55 GWh	Nov 1984	Dec 2025	Solar
Sunray 3	Sunray Energy 3 LLC	Daggett, CA	37 GWh	Nov 1985	Dec 2025	Solar
Sunrise Power LLC	Sunrise Power Co LLC	Fellows, CA	2 TWh	May 2001	May 2026	Natural Gas
Sunset Reservoir North Basin	Duke Energy Renewables Services	San Francisco, CA	6 GWh	Aug 2010	Dec 2025	Solar
Sunshine Gas Producers	Sunshine Gas Producers LLC	Sylmar, CA	132 GWh	Jul 2014	May 2026	Landfill Gas
Sunshine Valley Solar	EDP Renewables North America LLC	Armagosa, NV	249 GWh	Nov 2019	May 2026	Solar
SunZia Wind North	Pattern Operators LP	Clines Corner, NM	313 GWh	-	May 2026	Wind
SunZia Wind South	Pattern Operators LP	Corona, NM	1 TWh	-	May 2026	Wind
Superior Almond Hulling	Renewable Solar, Inc	Cantua Creek, CA	472 MWh	Aug 2024	Dec 2025	Solar
Sutter Home Winery GIR	Westbound Solar 3, LLC	American Canyon, CA	2 GWh	Jul 2023	Dec 2025	Solar
Sutter Home Winery TCC	REC SHW, LLC	Paso Robles, CA	2 GWh	Apr 2024	Dec 2025	Solar
Sutter Home Winery Westside	REC SHW, LLC	Lodi, CA	295 MWh	Sep 2025	Dec 2025	Solar
Sutter Santa Rosa Solar	Sutter Santa Rosa Solar LLC	Santa Rosa, CA	2 GWh	Aug 2019	Dec 2025	Solar
Sycamore Cogeneration	Sycamore Cogeneration Co	Bakersfield, CA	148 GWh	Nov 1987	May 2026	Natural Gas
Sycamore Energy LLC	Sycamore Energy LLC	Santee, CA	23 GWh	Mar 2004	Dec 2025	Landfill Gas
TA-Acacia, LLC	Onward Energy	Lancaster, CA	48 GWh	Oct 2014	Dec 2025	Solar
TA-High Desert LLC	TA-High Desert LLC	Lancaster, CA	58 GWh	Feb 2013	Dec 2025	Solar
Taft 26C Cogen	Chevron USA Inc	Taft, CA	43 GWh	Jun 1982	May 2026	Natural Gas
Tahquitz High School	AES Distributed Energy	Hemet, CA	2 GWh	Aug 2012	Dec 2025	Solar
Target Woodland Solar Project	MN8 Energy LLC	Woodland, CA	3 GWh	Nov 2018	Dec 2025	Solar
Taylor Farms	Foundation HA Energy Generation, LLC	Gonzales, CA	4 GWh	Oct 2014	Dec 2025	Wind
Taylor Farms - Schilling Place	Bloom Energy	Salinas, CA	8 GWh	Jun 2019	Dec 2025	Natural Gas
Tehachapi Wind Resource I	CalWind Resources Inc	Tehachapi, CA	12 GWh	Nov 1984	Dec 2025	Wind
Tehachapi Wind Resource II	CalWind Resources Inc	Tehachapi, CA	48 GWh	Dec 1996	Dec 2025	Wind
Teichert Materials-Teichert Vernalis	Foundation HA Energy Generation, LLC	San Joaquin, CA	2 GWh	Sep 2010	Dec 2025	Wind
Tejon Castac Water District Solar	CTMW Solar, LLC	Arvin, CA	3 GWh	Apr 2024	Dec 2024	Solar
Temescal	Metropolitan Water District of S CA	Corona, CA	14 GWh	Jun 1983	Apr 2025	Water
Temescal Canyon RV, LLC	Temescal Canyon RV, LLC	Corona, CA	2 GWh	Apr 2011	Dec 2025	Solar
Tequesquite Landfill Solar PV Project	Solar Star California XXXI, LLC	Riverside, CA	11 GWh	Sep 2015	Dec 2025	Solar
Terminus Hydroelectric Project	Eagle Creek Renewable Energy, LLC	Lemon Cove, CA	33 GWh	Feb 1990	Dec 2025	Water
Terra Francesco	Altus Power America Management, LLC	Ontario, CA	2 GWh	Feb 2015	Dec 2025	Solar
Terry 1818-WD	Standard Solar	Wasco, CA	10 GWh	Nov 2024	Dec 2025	Solar
Thermalito	California Dept. of Water Resources	Oroville, CA	302 GWh	Jan 1968	May 2026	Water
Thermalito Diverson Dam	California Dept. of Water Resources	Oroville, CA	10 GWh	Jun 1987	Dec 2025	Water
Thermo Fisher Pleasanton	TotalEnergies Renewables USA LLC	Pleasanton, CA	1 GWh	Jun 2025	Dec 2025	Solar
Three Forks Water Power Project	Grizzly Mountain Ranch	Zenia, CA	3 GWh	Nov 1984	Dec 2024	Water
THUMS	THUMS Long Beach Company	Long Beach, CA	158 GWh	Dec 2002	May 2026	Natural Gas
Tiger Creek	Pacific Gas & Electric Co.	Pioneer, CA	216 GWh	May 1931	Dec 2025	Water
Tipton 1 - (CA)	CleanCapital Holdings	Tipton, CA	167 MWh	Nov 2024	Dec 2024	Solar
Tipton 2 - (CA)	CleanCapital Holdings	Tipton, CA	3 GWh	Nov 2024	Dec 2025	Solar
Titan Solar 1 (CA)	Titan Solar 1, LLC	Borrego Springs, CA	131 GWh	Nov 2020	May 2026	Solar
TLR000 Hansen Fuel Cell	2016 ESA Project Company, LLC	Salinas, CA	20 GWh	Aug 2018	Dec 2025	Natural Gas
Toadtown	Pacific Gas & Electric Co.	Magalia, CA	2 GWh	Mar 1986	Oct 2025	Water
Topaz Solar Farm	Topaz Solar Farms LLC	Santa Margarita, CA	967 GWh	Mar 2013	May 2026	Solar
Torrance Refining Company, LLC	Torrance Refining Company, LLC	Torrance, CA	73 GWh	Aug 1983	May 2026	Other Gas : 61.0% Waste Heat : 39.0%
Total Energy Facilities	Los Angeles County Sanitation	Carson, CA	157 GWh	Dec 1985	Dec 2025	Other Biomass Gas : 94.7% Natural Gas : 5.3%
Toyota Long Beach Trigen	Long Beach Trigen, LLC	Long Beach, CA	17 GWh	Oct 2023	Dec 2024	Other Biomass Gas
TPC Windfarms LLC	Terra-Gen Operating Co-Wind	Mojave, CA	42 GWh	Nov 1986	Dec 2025	Wind
Tracy 18 - SLCVA418	Prologis Logistics Services Incorporated	Tracy, CA	182 MWh	Sep 2025	Dec 2025	Solar
Tracy 210	Costco Wholesale	Tracy, CA	21 GWh	Feb 2019	Dec 2025	Natural Gas
Tracy Combined Cycle Power Plant	MRP San Joaquin Energy LLC.	Tracy, CA	698 GWh	Mar 2003	May 2026	Natural Gas
Tranquillity ID	Tranquillity Solar 1, LLC	Tranquillity, CA	2 GWh	Feb 2018	Dec 2025	Solar
Transamerica Pyramid	Transamerica Pyramid Properties LLC	San Francisco, CA	4 MWh	Jun 2007	Dec 2025	Natural Gas
Trona Solar III	Trona Solar III LLC	Trona, CA	5 GWh	Mar 2023	Dec 2025	Solar
Tropico Solar PV Plant	Arevon Energy, Inc.	Delano, CA	32 GWh	Aug 2016	Dec 2025	Solar
Tulare 1 and 2	Arevon Energy, Inc.	Tulare, CA	5 GWh	Dec 2013	Dec 2025	Solar
Tulare Akers Professional Center	SoCore Energy LLC	Visalia, CA	2 GWh	Oct 2019	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 CSG LLC	Dimension Energy LLC	Tulare, CA	6 GWh	Sep 2024	Dec 2025	Solar
Tulare Success Power Project	Lower Tule River Irrgtn Dist	Porterville, CA	1 GWh	Nov 1989	Aug 2025	Water
Tule Wind LLC	Avangrid Power LLC	Boulevard, CA	339 GWh	Nov 2017	May 2026	Wind
Tulloch	Oakdale&South San Joaquin Irrigation D.	Jamestown, CA	103 GWh	May 1958	Dec 2025	Water
TWC	Bravo REC Management LLC	Tulare, CA	2 GWh	Jul 2024	Dec 2025	Solar
UC Davis South Campus	Solar Star California XXXII, LLC	Davis, CA	12 GWh	Feb 2015	Dec 2025	Solar
UC Merced Solar Hybrid	MN8 Energy LLC	Merced, CA	8 GWh	Nov 2018	Dec 2025	Solar
UC Riverside Lots 30 & 32	MN8 Energy LLC	Riverside, CA	7 GWh	Nov 2017	Dec 2025	Solar
UCI Facilities Management Central Plant	University of California Irvine	Irvine, CA	114 GWh	Jun 2007	May 2026	Natural Gas
Univ of California San Diego Solar	University of California San Diego	La Jolla, CA	4 GWh	Nov 2008	Dec 2025	Solar
Univ of San Francisco Cogen	University of San Francisco	San Francisco, CA	5 GWh	Aug 1987	Dec 2024	Natural Gas
University of California San Diego Hybri	University of California San Diego	La Jolla, CA	232 GWh	Jun 2001	May 2026	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 San Diego	Bloom Energy 2009 PPA	San Diego, CA	8 GWh	Nov 2016	Dec 2025	Natural Gas
University of the Pacific	The Greater Light USA LLC	Stockton, CA	6 GWh	Apr 2022	Dec 2024	Solar
US Borax	U S Borax Inc	Boron, CA	255 GWh	Jun 1984	May 2026	Natural Gas
US-TOPCO (Soccer Center)	Tesla Inc.	Lancaster, CA	4 GWh	Nov 2016	Dec 2025	Solar
USPS PV	Altus Power America Management, LLC	Los Angeles, CA	11 GWh	Jun 2017	Dec 2025	Solar
Vaca Dixon Solar Station	Pacific Gas & Electric Co.	Vacaville, CA	3 GWh	Nov 2009	Dec 2025	Solar
Vacaville Hospital	KP Vacaville Solar, LLC	Vacaville, CA	2 GWh	Nov 2019	Dec 2025	Solar
Valentine Solar, LLC	EDF Renewable Asset Holdings, Inc.	Rosamond, CA	270 GWh	Oct 2019	May 2026	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%
Vallecitos Water District	CleanCapital Holdings	San Marcos, CA	3 GWh	Aug 2021	Dec 2025	Solar
Valley Center	Heelstone Energy Holdings, LLC	Valley Center, CA	4 GWh	Nov 2016	Dec 2025	Solar
Valley Center 1	MN8 Energy LLC	Valley Center, CA	4 GWh	Nov 2013	Dec 2025	Solar
Valley Center 2	MN8 Energy LLC	Valley Center, CA	8 GWh	Nov 2013	Dec 2025	Solar
Van der Kooi Dairy Solar Array	Maas Energy Works	Riverdale, CA	4 GWh	Mar 2021	Dec 2024	Solar
Vandenberg Solar Project	MN8 Energy LLC	Vandenberg Airforce B, CA	39 GWh	Nov 2017	Dec 2025	Solar
Vasco Winds	Vasco Winds, LLC	Livermore, CA	234 GWh	Nov 2011	Oct 2025	Wind
Vega Solar	Vega Solar, LLC	Los Banos, CA	49 GWh	Feb 2015	Dec 2025	Solar
Venable Solar 1	Madison Energy Investments LLC	Blythe, CA	4 GWh	Mar 2015	Dec 2025	Solar
Venable Solar 2	Madison Energy Investments LLC	Blythe, CA	3 GWh	Mar 2015	Sep 2025	Solar
Ventura Solar	Ventura Solar LLC	Fillmore, CA	6 GWh	Aug 2021	Dec 2025	Solar
Verwey-Hanford Dairy Digester #1	AlsoEnergy	Hanford, CA	3 GWh	Sep 2016	Dec 2025	Other Biomass Gas
Verwey-Hanford Dairy Digester #2	Hanford Renewable Energy LLC	Hanford, CA	6 GWh	Jun 2019	Dec 2025	Other Biomass Gas
Verwey-Hanford Dairy Digester #3	Hanford Renewable Energy LLC	Hanford, CA	6 GWh	Jun 2019	Dec 2025	Other Biomass Gas
Victor Dry Farm Ranch A	AES Distributed Energy	Victorville, CA	10 GWh	May 2015	Dec 2025	Solar
Victor Dry Farm Ranch B	AES Distributed Energy	Victorville, CA	10 GWh	May 2015	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