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
Keysight - Santa Rosa	Bloom Energy	Santa Rosa, CA	34 GWh	Aug 2018	Dec 2025	Natural Gas
Redcrest Solar Farm	AES Distributed Energy	Edison, CA	34 GWh	Sep 2015	Dec 2025	Solar
Atwell Island	SPS Atwell Island LLC	Alpaugh, CA	34 GWh	Feb 2013	Dec 2025	Solar
Dominguez Plant	Eco Services Corp.	Long Beach, CA	34 GWh	Jul 1976	Dec 2025	Waste Heat
Welport Lease Project	Sentinel Peak Resources California, LLC	McKittrick, CA	34 GWh	Feb 1990	Dec 2025	Natural Gas
CSUF Trigeneration	California State University at Fullerton	Fullerton, CA	34 GWh	Sep 2010	Jul 2026	Natural Gas : 80.2% Solar : 19.8%
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%
Sun City Project LLC	Avenal Solar Holdings LLC	Avenal, CA	33 GWh	Jul 2011	Dec 2025	Solar
High Sierra Cogeneration Plant	Plumas Sierra Rural Electric Coop	Susanville, CA	33 GWh	Jan 2010	Dec 2025	Natural Gas
Terminus Hydroelectric Project	Eagle Creek Renewable Energy, LLC	Lemon Cove, CA	33 GWh	Feb 1990	Dec 2025	Water
Victory Garden (Tehachapi)	Wind Stream Operations LLC	Tehachapi, CA	33 GWh	Nov 1981	Dec 2024	Wind
Ameresco Vasco Road	Ameresco Vasco Road, LLC	Livermore, CA	33 GWh	Feb 2013	Dec 2025	Landfill Gas
Adera Solar	AES Distributed Energy	Chowchilla, CA	33 GWh	Nov 2015	Dec 2025	Solar
Tropico Solar PV Plant	Arevon Energy, Inc.	Delano, CA	32 GWh	Aug 2016	Dec 2025	Solar
Hat Creek 1	Pacific Gas & Electric Co.	Burney, CA	32 GWh	Jul 1921	Dec 2025	Water
Pastoria Solar	Pastoria Solar Energy Company, LLC	Lebec, CA	32 GWh	-	Jul 2026	Solar
SEPV 8	Deriva Energy	Twentynine Palms, CA	32 GWh	May 2013	Dec 2025	Solar
Isabella Hydro Project	Isabella Partners	Lake Isabella, CA	32 GWh	Nov 1990	Dec 2025	Water
Saint Agnes Medical Center	Saint Agnes Medical Center	Fresno, CA	32 GWh	Apr 2001	Jul 2026	Natural Gas
Sand Drag LLC	Avenal Solar Holdings LLC	Avenal, CA	32 GWh	Jul 2011	Dec 2025	Solar
Calabasas Gas to Energy Facility	Los Angeles County Sanitation	Agoura, CA	32 GWh	Jun 2010	Dec 2025	Landfill Gas
WWTP Power Generation Station	East Bay Municipal Util Dist - (CA)	Oakland, CA	32 GWh	Jul 1985	Jul 2026	Other Biomass Gas : 98.9% Distillate Fuel Oil : 1.1%
Ameresco Forward	Ameresco Forward, LLC	Manteca, CA	32 GWh	Jan 2014	Dec 2025	Landfill Gas
Apple Campus 2 Fuel Cell	Apple, Inc	Cupertino, CA	31 GWh	May 2017	Dec 2025	Landfill Gas
EQX011 Duane Fuel Cell	2016 ESA Project Company, LLC	Santa Clara, CA	31 GWh	Aug 2018	Dec 2025	Natural Gas
Morelos del Sol	Southern Power Co	Lost Hills, CA	31 GWh	Oct 2015	Dec 2025	Solar
EQX015 Great Oaks Fuel Cell	2016 ESA Project Company, LLC	San Jose, CA	31 GWh	Dec 2017	Dec 2025	Natural Gas
Gilroy Peaking Energy Center	Calpine Gilroy Cogen LP	Gilroy, CA	31 GWh	Oct 2001	Dec 2025	Natural Gas
Coleman PH	Pacific Gas & Electric Co.	Anderson, CA	31 GWh	May 1979	Dec 2025	Water
Equinix Lundy Ave. Fuel Cell	2016 ESA Project Company, LLC	San Jose, CA	31 GWh	Aug 2017	Dec 2025	Natural Gas
Blacksand Generating Facility	Bridge Energy LLC	Brea, CA	31 GWh	May 2000	Dec 2025	Natural Gas
Diablo Winds LLC	Sequitur Renewables, LLC	Livermore, CA	31 GWh	Nov 2004	Dec 2025	Wind
Gates Solar Station	Pacific Gas & Electric Co.	Huron, CA	31 GWh	May 2013	Dec 2025	Solar
Mariposa Energy Project	Diamond Generating Corporation	Byron, CA	30 GWh	Sep 2012	Jul 2026	Natural Gas
Rush Creek	Southern California Edison Co	June lake, CA	30 GWh	Sep 1916	Dec 2025	Water
Cottonwood Solar, LLC (Goose Lake)	Onward Energy	Lost Hills, CA	30 GWh	Apr 2015	Dec 2025	Solar
Wise	Pacific Gas & Electric Co.	Auburn, CA	30 GWh	Feb 1917	Dec 2025	Water
Lincoln Landfill	Energy 2001 Inc	Lincoln, CA	29 GWh	Oct 2004	Dec 2025	Landfill Gas
Grossmont Hospital	Sharp Grossmont Hospital	La Mesa, CA	29 GWh	Jul 1983	Dec 2025	Natural Gas
B Braun Medical	B Braun Medical Inc	Irvine, CA	29 GWh	Oct 1982	Mar 2025	Natural Gas
Portal Ridge Solar C, LLC	Portal Ridge Solar, LLC	Lancaster, CA	29 GWh	Jan 2017	Dec 2025	Solar
Woodmere Solar Farm	AES Distributed Energy	Edison, CA	29 GWh	Nov 2015	Dec 2025	Solar
Huron Solar Station	Pacific Gas & Electric Co.	Huron, CA	28 GWh	May 2012	Dec 2025	Solar
Pebbly Beach Generating Station Hybrid	Southern California Edison Co	Avalon, CA	28 GWh	Jun 1958	Jul 2026	Distillate Fuel Oil : 95.4% Gaseous Propane : 4.6%
G2 Energy Ostrom Road LLC	G2 Energy LLC	Wheatland, CA	28 GWh	Jan 2009	Dec 2025	Landfill Gas
Fresno-Clovis RWRF	Forefront Power, LLC	Fresno, CA	28 GWh	Mar 2025	Dec 2025	Solar
Illumina Way SD	Bloom Energy	San Diego, CA	28 GWh	Aug 2019	Dec 2025	Natural Gas
King City Power Plant	Calpine King City Cogen LLC	King City, CA	28 GWh	Jan 1989	Jul 2026	Natural Gas
Gas Utilization Facility	City of San Diego - (CA)	San Diego, CA	27 GWh	May 1985	Jul 2026	Other Biomass Gas
Orion Solar I	Orion Solar I LLC	Arvin, CA	27 GWh	Mar 2014	Dec 2025	Solar
Hoag Hospital Cogen Plant	Hoag Memorial Presbyterian Hospital	Newport Beach, CA	27 GWh	Jun 2006	Jul 2026	Natural Gas
Sly Creek	South Feather Water and Power Agency	Forbestown, CA	27 GWh	Jun 1983	Dec 2025	Water
Rio Bravo Hydro Project	Olcese Water District	Bakersfield, CA	27 GWh	Apr 1989	Nov 2025	Water
McSwain	Merced Irrigation District	Snelling, CA	27 GWh	Jun 1967	Oct 2025	Water
Equinix Great Oaks Blvd. Fuel Cell	2016 ESA Project Company, LLC	San Jose, CA	27 GWh	Nov 2017	Dec 2025	Natural Gas
Cymric 6Z Cogen	Chevron USA Inc	McKittrick, CA	27 GWh	Jun 1986	Dec 2025	Natural Gas
Western Antelope Dry Ranch	AES Distributed Energy	Lancaster, CA	26 GWh	Nov 2016	Dec 2025	Solar
Marsh Landing Generating Station	Marsh Landing LLC	Antioch, CA	26 GWh	Apr 2013	Jul 2026	Natural Gas
Portal	Southern California Edison Co	Lakeshore, CA	26 GWh	Nov 1956	Dec 2025	Water
Childrens Hospital	DTE San Diego COGEN Inc.	San Diego, CA	26 GWh	Mar 2000	Jul 2026	Natural Gas
Karen Avenue Wind Farm	San Gorgonio Farms Inc	North Palm Springs, CA	26 GWh	Dec 1984	Dec 2025	Wind
MM Lopez Energy	MM Lopez Energy LLC	Lake View Terrace, CA	26 GWh	Nov 1998	Dec 2025	Landfill Gas
NextEra Westside PV	Westside Solar, LLC	Five Points, CA	26 GWh	Feb 2017	Dec 2025	Solar
Chili Bar	Sacramento Municipal Util Dist	Placerville, CA	25 GWh	Feb 1965	Dec 2025	Water
Ameresco San Joaquin	Ameresco San Joaquin, LLC	Linden, CA	25 GWh	Mar 2014	Dec 2025	Landfill Gas
Micro Santa Clara	Bloom Energy	San Jose, CA	25 GWh	Jun 2018	Dec 2025	Natural Gas
Ridgetop Energy LLC	Terra-Gen Operating Co-Wind	Mojave, CA	24 GWh	Dec 1983	Dec 2025	Wind
CalPortland Company Mojave Wind	CalPortland Company	Mojave, CA	24 GWh	Oct 2024	Dec 2025	Wind
Lone Valley Solar Park I LLC	Lone Valley Solar Park I LLC	Lucerne Valley, CA	24 GWh	Nov 2014	Dec 2025	Solar
Naval Air Weapons Station China Lake	MN8 Energy LLC	Ridgecrest, CA	24 GWh	Aug 2012	Dec 2025	Solar
SEPV Palmdale East	AES Distributed Energy	Palmdale, CA	24 GWh	Jul 2015	Dec 2025	Solar
SRI International Cogen Project	IPT SRI Cogeneration Inc	Menlo Park, CA	24 GWh	Mar 1987	Jul 2026	Natural Gas
A G Wishon	Pacific Gas & Electric Co.	North Fork, CA	24 GWh	Aug 1910	Oct 2025	Water
RE Kansas Solar, LLC	Onward Energy	Lemoore, CA	24 GWh	Nov 2014	Dec 2025	Solar
Bishop Creek 3	Southern California Edison Co	Bishop, CA	24 GWh	May 1913	Dec 2025	Water
Yuba City Energy Center	Calpine Corp-Yuba City	Yuba City, CA	23 GWh	Jul 2002	Dec 2025	Natural Gas
Sycamore Energy LLC	Sycamore Energy LLC	Santee, CA	23 GWh	Mar 2004	Dec 2025	Landfill Gas
Oxbow (CA)	Placer County Water Agency - (CA)	Foresthill, CA	23 GWh	Sep 1966	Dec 2025	Water
SEPV9 Power Plant	Deriva Energy	Twentynine Palms, CA	23 GWh	May 2013	Dec 2025	Solar
RE Columbia 3 LLC	MN8 Energy LLC	Mojave, CA	23 GWh	Dec 2013	Dec 2025	Solar
Larkspur Energy Facility	Diamond Generating Corporation	San Diego, CA	23 GWh	Jun 2001	Dec 2025	Natural Gas
Cantua Solar Station	Pacific Gas & Electric Co.	TBD, CA	23 GWh	May 2012	Dec 2025	Solar
EDF Renewable Windfarm V Inc	EDF Renewable Asset Holdings, Inc.	Birds Landing, CA	23 GWh	Dec 1989	Dec 2025	Wind
Abel Road Bioenergy	ACC Renewable Resources	Williams, CA	23 GWh	Jun 2022	Dec 2025	Agricultural By-Products
Solar Star California, XLIV, LLC	MN8 Energy LLC	Pearblossom, CA	23 GWh	Nov 2016	Dec 2025	Solar
Foundation NWNA	Foundation CA Fund V Manager, LLC	Cabazon, CA	23 GWh	Nov 2012	Dec 2025	Wind
Java Solar, LLC	Java Solar, LLC	Lemoore, CA	22 GWh	Oct 2022	Dec 2025	Solar
San Joaquin Solar	GASNA 6P, LLC	San Joaquin, CA	22 GWh	Apr 2018	Dec 2025	Solar
Poole	Southern California Edison Co	Lee Vining, CA	22 GWh	Apr 1924	Dec 2025	Water
Corcoran Solar	RWE Clean Energy	Corcoran, CA	22 GWh	Jul 2013	Dec 2025	Solar
Waste Mangement Redwood LFGTE	WM Renewable Energy LLC	Novato, CA	22 GWh	Apr 2017	Dec 2025	Landfill Gas
Hatchet Creek Project	Mega Renewables	Montgomery Creek, CA	22 GWh	Nov 1986	Dec 2025	Water
Kaweah Delta District Hospital	Kaweah Delta Hospital	Visalia, CA	22 GWh	Sep 2008	Jul 2026	Natural Gas
Coram Energy LLC (ECT)	Nextera Energy Resources	Tehachapi, CA	22 GWh	Apr 2005	Dec 2025	Wind
Halsey	Pacific Gas & Electric Co.	Auburn, CA	22 GWh	Nov 1916	Dec 2025	Water
Guernsey Solar Station	Pacific Gas & Electric Co.	Hanford, CA	22 GWh	Jul 2013	Dec 2025	Solar
Marin Clean Energy Solar One	AES Distributed Energy	Richmond, CA	21 GWh	Nov 2017	Dec 2025	Solar
Kaiser - Woodland Hills	Bloom Energy	Woodland Hills, CA	21 GWh	Aug 2019	Dec 2025	Natural Gas
Volta 1	Pacific Gas & Electric Co.	Manton, CA	21 GWh	Mar 1980	Dec 2025	Water
Aspiration G	AES Distributed Energy	Cantua Creek, CA	21 GWh	Aug 2017	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