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	May 2025
Annual Generation	190.1 TWh
Power Plants	1,943
Utilities	893
Ranked #7 out of 65 in terms of net annual generation
Ranked #7 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 43.8% Solar \| 24.9% Water \| 11.4% Wind \| 10.7% Nuclear \| 9.7%

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Daily Net Generation for California Independent System Operator for the past 3 Years

Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
Three Forks Water Power Project	Grizzly Mountain Ranch	Zenia, CA	3 GWh	Nov 1984	Dec 2023	Water
White Wing Solar	Leeward Asset Management, LLC	Yuma, AZ	185 GWh	-	Mar 2025	Solar
Feather River Energy Center	Calpine Corp-Yuba City	Yuba City, CA	45 GWh	Dec 2002	Dec 2023	Natural Gas
Yuba City Cogen Partners	Wellhead Services, Inc	Yuba City, CA	19 GWh	Nov 1990	Dec 2023	Natural Gas
Greenleaf 1	Calpine Greenleaf Holding, Inc.	Yuba City, CA	3 GWh	Jan 1989	Dec 2023	Natural Gas
Greenleaf 2 Power Plant	Greenleaf Energy LLC	Yuba City, CA	33 GWh	Sep 1989	Mar 2025	Natural Gas
Yuba City Energy Center	Calpine Corp-Yuba City	Yuba City, CA	49 GWh	Jul 2002	Dec 2023	Natural Gas
MM Yolo Power	Yolo County Community Services Department	Woodland, CA	18 GWh	Sep 1990	Dec 2023	Landfill Gas
Yolo County Solar Project	Yolo County of	Woodland, CA	534 MWh	Nov 2010	Dec 2023	Solar
Woodland Biomass Power Ltd	DTE Energy Services-Woodland	Woodland, CA	172 GWh	Aug 1989	Dec 2023	Wood/Wood Waste Solids : 99.6%
Walgreens Woodland Distribution Center	SunE WG45 Woodland LLC	Woodland, CA	775 MWh	Jul 2007	Dec 2023	Solar
Target Woodland Solar Project	MN8 Energy LLC	Woodland, CA	3 GWh	Nov 2018	Dec 2023	Solar
Kaiser - Woodland Hills	Bloom Energy	Woodland Hills, CA	18 GWh	Aug 2019	Dec 2023	Natural Gas
Monticello Dam	Solano Irrigation District	Winters, CA	32 GWh	May 1983	Dec 2023	Water
Windsor Floating Solar	CA ODEVI LLC	Windsor, CA	3 GWh	Oct 2020	Dec 2023	Solar
Diamond Valley Solar Project	Ecos Energy LLC	Winchester, CA	2 GWh	Dec 2014	Dec 2023	Solar
Harbor Cogen	Harbor Cogeneration Co.	Wilmington, CA	26 GWh	Nov 1988	Dec 2023	Natural Gas
Wadham Energy LP	Wadham Energy Ltd Partners	Williams, CA	74 GWh	Feb 1989	Dec 2023	Agricultural By-Products : 99.5% Natural Gas : 0.5%
Abel Road Bioenergy	ACC Renewable Resources	Williams, CA	17 GWh	Jun 2022	Dec 2023	Agricultural By-Products
Puente Hills Energy Recovery	Los Angeles County Sanitation	Whittier, CA	158 GWh	Sep 1986	Mar 2025	Landfill Gas
Olsen	Olsen Power Partners	Whitmore, CA	18 GWh	Dec 1989	Dec 2023	Water
San Gorgonio Farms Wind Farm	San Gorgonio Farms Inc	Whitewater, CA	62 GWh	Feb 1983	Dec 2023	Wind
Painted Hills Wind Park	Terra-Gen Operating Co-Wind	Whitewater, CA	171 GWh	Oct 1985	Mar 2025	Wind
Mesa Wind Repower	Mesa Wind Repower	Whitewater, CA	83 GWh	-	Mar 2025	Wind
AM Wind Repower LLC	Brookfield Renewable Trading and Marketing LP	Whitewater, CA	11 GWh	-	Mar 2025	Wind
G2 Energy Ostrom Road LLC	G2 Energy LLC	Wheatland, CA	25 GWh	Jan 2009	Dec 2023	Landfill Gas
MM West Covina	MM West Covina Energy LLC	West Covina, CA	40 GWh	May 1993	Dec 2023	Landfill Gas : 99.4% Natural Gas : 0.6%
HL Power	HL Power Company	Wendel, CA	205 GWh	Jun 1989	Dec 2023	Wood/Wood Waste Solids : 99.7%
HL Solar	HL Solar LLC	Wendel, CA	11 GWh	May 2019	Dec 2023	Solar
North Sky River Energy LLC	North Sky River Energy LLC	Weldon, CA	387 GWh	Nov 2012	Dec 2023	Wind
Ameresco Santa Cruz Energy	AMERESCO Santa Cruz Energy LLC	Watsonville, CA	19 GWh	Dec 2005	Dec 2023	Landfill Gas
Wildwood Solar II	Duke Energy Renewables Services	Wasco, CA	37 GWh	Dec 2016	Dec 2023	Solar
Wildwood Solar I, LLC	Duke Energy Renewables Services	Wasco, CA	45 GWh	Jan 2015	Dec 2023	Solar
CDCR (CA) - Wasco State Prison	SunE Wasco SP Owner, LLC	Wasco, CA	4 GWh	Nov 2013	Dec 2023	Solar
DGS Wasco State Prison	Forefront Power, LLC	Wasco, CA	5 GWh	Jun 2020	Dec 2023	Solar
Wonderful Nursery	Wonderful Renewable Energy, LLC.	Wasco, CA	5 GWh	Jun 2021	Dec 2023	Solar
Walnut Unified School District Walnut HS Hybrid	Tesla Inc.	Walnut, CA	2 GWh	Jan 2020	Dec 2023	Solar
San Diego - NCRC at Vista	California PV Energy 3, LLC	Vista, CA	3 GWh	Feb 2021	Dec 2023	Solar
Double J Dairy Array	Bravo REC Management LLC	Visalia, CA	354 MWh	Oct 2023	Dec 2023	Solar
RE-VFO LLC	RE-VFO LLC	Visalia, CA	2 GWh	Apr 2009	Dec 2023	Solar
MM Tulare Energy	MM Tulare Energy LLC	Visalia, CA	10 GWh	Apr 1998	Dec 2023	Landfill Gas
Ivanhoe Solar	Altus Power America Management, LLC	Visalia, CA	5 GWh	Dec 2013	Dec 2023	Solar
Kaweah Delta District Hospital	Kaweah Delta Hospital	Visalia, CA	21 GWh	Sep 2008	Mar 2025	Natural Gas
Expressway Solar C2	AES Distributed Energy	Victorville, CA	3 GWh	Oct 2014	Dec 2023	Solar
High Desert Power Plant	MRP Generation Holdings, LLC	Victorville, CA	4 TWh	Mar 2003	Mar 2025	Natural Gas
Foundation Cemex River Plant	Foundation CA Fund VI Manager LLC	Victorville, CA	3 GWh	Nov 2012	Dec 2023	Wind
Victor Dry Farm Ranch A	AES Distributed Energy	Victorville, CA	9 GWh	May 2015	Dec 2023	Solar
Victor Dry Farm Ranch B	AES Distributed Energy	Victorville, CA	9 GWh	May 2015	Dec 2023	Solar
Victor Mesa Linda B2	AES Distributed Energy	Victorville, CA	2 GWh	Oct 2014	Dec 2023	Solar
Victor Mesa Linda C2	AES Distributed Energy	Victorville, CA	2 GWh	Oct 2014	Dec 2023	Solar
Expressway Solar B	AES Distributed Energy	Victorville, CA	4 GWh	Apr 2014	Dec 2023	Solar
Expressway Solar A	AES Distributed Energy	Victorville, CA	4 GWh	Apr 2014	Dec 2023	Solar
Victor Mesa Linda D2	AES Distributed Energy	Victorville, CA	4 GWh	Oct 2014	Dec 2023	Solar
Victor Mesa Linda E2	AES Distributed Energy	Victorville, CA	4 GWh	Oct 2014	Dec 2023	Solar
Hudson - High Desert Hybrid	MN8 Energy LLC	Victorville, CA	280 GWh	Nov 2021	Mar 2025	Solar
H. Gonzales	City of Vernon	Vernon, CA	298 MWh	Dec 1986	Dec 2023	Natural Gas
Malburg	City of Vernon	Vernon, CA	362 GWh	Sep 2005	Mar 2025	Natural Gas
CA-Ventura Co CCD-Oxnard College Canopy	Forefront Power, LLC	Ventura, CA	3 GWh	Nov 2022	Dec 2023	Solar
Vandenberg Solar Project	MN8 Energy LLC	Vandenberg Airforce B, CA	39 GWh	Nov 2017	Dec 2023	Solar
New Hogan Power Plant	Modesto Irrigation District	Valley Springs, CA	11 GWh	Mar 1989	Dec 2023	Water
Pardee	East Bay Municipal Util Dist	Valley Springs, CA	182 GWh	Jun 1930	Dec 2023	Water
Valley Center 1	MN8 Energy LLC	Valley Center, CA	4 GWh	Nov 2013	Dec 2023	Solar
Valley Center 2	MN8 Energy LLC	Valley Center, CA	7 GWh	Nov 2013	Dec 2023	Solar
NLP Granger	Heelstone Energy Holdings, LLC	Valley Center, CA	6 GWh	Aug 2016	Dec 2023	Solar
Valley Center	Heelstone Energy Holdings, LLC	Valley Center, CA	4 GWh	Nov 2016	Dec 2023	Solar
SFDK Solar	AES Distributed Energy	Vallejo, CA	10 GWh	Nov 2019	Dec 2023	Solar
Stanislaus	Pacific Gas & Electric Co.	Vallecito, CA	334 GWh	Feb 1963	Dec 2023	Water
CalPeak Power Vaca Dixon Peaker Plant	CalPeak Power, LLC	Vacaville, CA	7 GWh	May 2002	Dec 2023	Natural Gas
G2 Energy Hay Rd	G2 Energy LLC	Vacaville, CA	11 GWh	May 2013	Dec 2023	Landfill Gas
Mariani Packing Vacaville Solar	SunE U6 Holdings LLC	Vacaville, CA	891 MWh	Oct 2008	Dec 2023	Solar
Genentech Vacaville Meter #1	Tesla Inc.	Vacaville, CA	12 GWh	Apr 2017	Dec 2023	Solar
Vaca Dixon Solar Station	Pacific Gas & Electric Co.	Vacaville, CA	4 GWh	Nov 2009	Dec 2023	Solar
Vacaville Hospital	KP Vacaville Solar, LLC	Vacaville, CA	3 GWh	Nov 2019	Dec 2023	Solar
CDCR (CA) - Solano State Prison	SunE Solano SP Owner, LLC	Vacaville, CA	2 GWh	Nov 2013	Dec 2023	Solar
San Antonio Regional Hospital	San Antonio Regional Hospital	Upland, CA	11 GWh	Dec 1984	Dec 2023	Natural Gas
Comcast - Universal City	Bloom Energy	Universal City, CA	8 GWh	Aug 2021	Dec 2023	Natural Gas
Lake Mendocino	City of Ukiah - (CA)	Ukiah, CA	11 GWh	Apr 1987	Dec 2023	Water
MCAGCC Cogen Plant	DOD USMC Marine Air Ground Combat	Twentynine Palms, CA	41 GWh	Jan 2003	Dec 2023	Natural Gas
SEPV 8	Duke Energy Renewables Services	Twentynine Palms, CA	33 GWh	May 2013	Dec 2023	Solar
SEPV9 Power Plant	Duke Energy Renewables Services	Twentynine Palms, CA	24 GWh	May 2013	Dec 2023	Solar
SEPV 2	CVI CleanCapital Solar 1 LLC	Twentynine Palms, CA	4 GWh	May 2012	Dec 2023	Solar
Elk Hills Cogen	California Resources Elk Hills LLC	Tupman, CA	53 GWh	Oct 1994	Mar 2025	Natural Gas
Elk Hills Power LLC	Elk Hills Power LLC	Tupman, CA	3 TWh	Jun 2003	Mar 2025	Natural Gas
Tulare 1 and 2	Arevon Energy, Inc.	Tulare, CA	636 MWh	Dec 2013	Dec 2023	Solar
Solar Photovoltaic Project #42	Southern California Edison Co	Tulare, CA	7 GWh	Oct 2012	Dec 2023	Solar
Central CA Fuel Cell 1	Central CA Fuel Cell 1	Tulare, CA	18 GWh	Apr 2018	Dec 2023	Natural Gas
Tulare BioMAT Fuel Cell	Central CA Fuel Cell 2, LLC	Tulare, CA	12 GWh	Nov 2019	Dec 2023	Other Biomass Gas : 81.3% Natural Gas : 18.7%
Trona Solar III	Trona Solar III LLC	Trona, CA	5 GWh	Mar 2023	Dec 2023	Solar
Argus Cogen Plant	Searles Valley Minerals Operations Inc.	Trona, CA	256 GWh	Nov 1947	Mar 2025	Bituminous Coal : 94.3% Natural Gas : 5.7%
Tranquillity ID	Tranquillity Solar 1, LLC	Tranquillity, CA	3 GWh	Feb 2018	Dec 2023	Solar
Prologis L.P	EnterSolar	Tracy, CA	3 GWh	Jul 2018	Dec 2023	Solar
Medline Ind. Phase 2 Tracy	EnterSolar	Tracy, CA	2 GWh	Mar 2018	Dec 2023	Solar
Tracy 210	Costco Wholesale	Tracy, CA	16 GWh	Feb 2019	Dec 2023	Natural Gas
Foundation ST	Foundation HA Energy Generation, LLC	Tracy, CA	2 GWh	May 2011	Dec 2023	Wind
Tracy Combined Cycle Power Plant	MRP San Joaquin Energy LLC.	Tracy, CA	964 GWh	Mar 2003	Mar 2025	Natural Gas
Torrance Refining Company, LLC	Torrance Refining Company, LLC	Torrance, CA	75 GWh	Aug 1983	Mar 2025	Other Gas : 80.9% Waste Heat : 19.1%
Honda Torrance	Bloom Energy	Torrance, CA	762 MWh	Nov 2012	Dec 2023	Natural Gas
Mesquite Solar 3, LLC	Consolidated Edison Development Inc.	Tonopah, AZ	459 GWh	Nov 2016	Mar 2025	Solar
Mesquite Solar 1	Consolidated Edison Development Inc.	Tonopah, AZ	404 GWh	Oct 2011	Dec 2023	Solar
Mesquite Solar 2, LLC	Consolidated Edison Development Inc.	Tonopah, AZ	293 GWh	Nov 2016	Mar 2025	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#26	Arizona Public Service Company	22.9 TWh	75
#55	Arlington Valley, LLC	3.4 TWh	1
#35	Balancing Authority of Northern California	15.1 TWh	83
#48	Imperial Irrigation District	5.9 TWh	65
#32	Los Angeles Department of Water and Power	17.6 TWh	120
#22	Nevada Power Company	38.3 TWh	136
#54	New Harquahala Generating Company, LLC	3.5 TWh	1
#18	Salt River Project Agricultural Improvement and Power District	58.7 TWh	45
#58	Turlock Irrigation District	2.1 TWh	11
#44	Western Area Power Administration - Desert Southwest Region	8.2 TWh	30

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#3	Electric Reliability Council of Texas, Inc.	476.0 TWh	1,139
#5	Southwest Power Pool	297.0 TWh	762
#6	Southern Company Services, Inc. - Trans	251.8 TWh	393
#7	California Independent System Operator	190.1 TWh	1,943
#8	Tennessee Valley Authority	158.8 TWh	170
#10	Florida Power & Light Co.	148.3 TWh	159
#12	New York Independent System Operator	130.6 TWh	1,100
#13	Duke Energy Carolinas	111.4 TWh	556
#15	ISO New England	103.2 TWh	1,487
#16	Bonneville Power Administration	82.2 TWh	158