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
Mariani Packing Vacaville Solar	SunE U6 Holdings LLC	Vacaville, CA	586 MWh	Oct 2008	Dec 2025	Solar
Maricopa West Solar PV, LLC	Onward Energy	Taft, CA	50 GWh	Nov 2015	Dec 2025	Solar
Marin Clean Energy Solar One	AES Distributed Energy	Richmond, CA	21 GWh	Nov 2017	Dec 2025	Solar
Marina Landfill Gas	Monterey Regional Waste Mgmt	Marina, CA	10 GWh	Mar 1998	Dec 2025	Landfill Gas
Marina South	Altus Power America Management, LLC	San Pedro, CA	2 GWh	Nov 2020	Dec 2025	Solar
Mariposa Energy Project	Diamond Generating Corporation	Byron, CA	30 GWh	Sep 2012	Jul 2026	Natural Gas
Marsh Landing Generating Station	Marsh Landing LLC	Antioch, CA	26 GWh	Apr 2013	Jul 2026	Natural Gas
Martinez Refining	Martinez Refining Co	Martinez, CA	662 GWh	Oct 1995	Jul 2026	Natural Gas : 96.3% Other Gas : 3.7%
Martinez Sulfuric Acid Regeneration Plt	Eco Services Corp.	Martinez, CA	13 GWh	Dec 1977	Dec 2025	Waste Heat
Maverick Solar 4, LLC	Maverick Solar 4, LLC	Desert Center, CA	294 GWh	Nov 2020	Jul 2026	Solar
Maverick Solar 6, LLC	Maverick Solar 6, LLC	Desert Center, CA	233 GWh	Oct 2021	Jul 2026	Solar
Maverick Solar 7, LLC	Maverick Solar 7, LLC	Desert Center, CA	397 GWh	Nov 2021	Jul 2026	Solar
Maverick Solar, LLC	Maverick Solar, LLC	Desert Center, CA	312 GWh	Nov 2020	Jul 2026	Solar
Maxim	Bloom Energy	San Jose, CA	7 GWh	Jul 2014	Dec 2025	Natural Gas
MCAGCC Cogen Plant	DOD USMC Marine Air Ground Combat	Twentynine Palms, CA	68 GWh	Jan 2003	Dec 2025	Natural Gas
McCoy Solar Energy Project Hybrid	McCoy Solar, LLC	Blythe, CA	639 GWh	Jul 2015	Dec 2025	Solar
McFarland A Solar and Storage	AES Clean Energy	Dateland, AZ	537 GWh	Nov 2023	Jul 2026	Solar
McFarland B Solar and Storage	AES Clean Energy	Dateland, AZ	790 GWh	Nov 2024	Jul 2026	Solar
McGrath Peaker	Southern California Edison Co	Oxnard, CA	3 GWh	Oct 2012	Dec 2025	Natural Gas
McKittrick Cogen	Chevron USA Inc	McKittrick, CA	61 GWh	May 2012	Dec 2025	Natural Gas
McKittrick Limited	WCAC Operating Company	Bakersfield, CA	5 GWh	Sep 1991	Jul 2026	Natural Gas
McSwain	Merced Irrigation District	Snelling, CA	27 GWh	Jun 1967	Oct 2025	Water
Medline Ind. Phase 2 Tracy	Powerflex	Tracy, CA	2 GWh	Mar 2018	Aug 2025	Solar
Merced 1 PV	ZGlobal Inc	Los Banos, CA	6 GWh	Mar 2018	Dec 2025	Solar
Merced Falls	Merced Irrigation District	Snelling, CA	9 GWh	Jun 1930	Sep 2025	Water
Merced Pipeline	Maas Energy Works	Merced, CA	1 GWh	Jun 2023	Dec 2025	Solar
Merced Solar LLC	Ecos Energy LLC	Merced, CA	4 GWh	Nov 2014	Dec 2025	Solar
Meridian Vineyards	CVI CleanCapital Solar 1 LLC	Paso Robles, CA	1 GWh	Nov 2010	Dec 2025	Solar
Mesa Wind Power LLC	Mesa Wind Power LLC	North Palm Springs, CA	117 GWh	Oct 1984	Jul 2026	Wind
Mesa Wind Repower	Mesa Wind Repower	Whitewater, CA	80 GWh	May 2024	Dec 2024	Wind
Mesquite Solar 1	RWE Clean Energy	Tonopah, AZ	392 GWh	Oct 2011	Dec 2025	Solar
Mesquite Solar 2, LLC	RWE Clean Energy	Tonopah, AZ	248 GWh	Nov 2016	Jul 2026	Solar
Mesquite Solar 3, LLC	RWE Clean Energy	Tonopah, AZ	437 GWh	Nov 2016	Jul 2026	Solar
Mesquite Solar 4, LLC	RWE Clean Energy	Tonopah, AZ	140 GWh	Dec 2023	Jul 2026	Solar
Metcalf Energy Center	Calpine Corp - Metcalf Energy Center	San Jose, CA	2 TWh	May 2005	Jul 2026	Natural Gas
Micro Santa Clara	Bloom Energy	San Jose, CA	25 GWh	Jun 2018	Dec 2025	Natural Gas
Middle Fork	Placer County Water Agency - (CA)	Foresthill, CA	459 GWh	Sep 1966	Jul 2026	Water
Midway Peaking LLC	CalPeak Power, LLC	Firebaugh, CA	6 GWh	Apr 2009	Dec 2025	Natural Gas
Midway Sunset Cogen	Midway-Sunset Cogeneration Co	Fellows, CA	8 GWh	Apr 1989	Jul 2026	Natural Gas
Mill Creek 3	Southern California Edison Co	Mill Creek, CA	771 MWh	Feb 1903	Dec 2025	Water
Mira Loma	Costco Wholesale	Mira Loma, CA	2 GWh	Oct 2011	Dec 2025	Solar
Mira Loma Peaker	Southern California Edison Co	Ontario, CA	1 GWh	Aug 2007	Dec 2025	Natural Gas
Miramar Energy Facility	San Diego Gas & Electric Co	San Diego, CA	12 GWh	May 2005	Jul 2026	Natural Gas
Mission College Blvd. Fuel Cell	2016 ESA Project Company, LLC	Santa Clara, CA	36 GWh	Nov 2017	Dec 2025	Natural Gas
Mission Solar LLC	Ecos Energy LLC	Merced, CA	4 GWh	Nov 2014	Dec 2025	Solar
Mitchell Solar, LLC	CD US Solar PO 3, LLC	Silver Lake, CA	4 GWh	Nov 2014	Dec 2025	Solar
MM Lopez Energy	MM Lopez Energy LLC	Lake View Terrace, CA	26 GWh	Nov 1998	Dec 2025	Landfill Gas
MM San Diego-Miramar	MM San Diego Energy-Miramar	San Diego, CA	40 GWh	Jun 1997	Dec 2025	Landfill Gas : 91.4% Other Biomass Gas : 8.6%
MM West Covina	MM West Covina Energy LLC	West Covina, CA	40 GWh	May 1993	Dec 2025	Landfill Gas : 99.7%
MM Yolo Power	Yolo County Community Services Department	Woodland, CA	16 GWh	Sep 1990	Dec 2025	Landfill Gas
Moccasin	City & County of San Francisco - (CA)	Moccasin, CA	305 GWh	Jul 1969	Jul 2026	Water
Moccasin Low Head Hydro Project	City & County of San Francisco - (CA)	Moccasin, CA	3 GWh	Jun 1987	Dec 2025	Water
Mojave 16/17/18	Terra-Gen Operating Co-Wind	Mojave, CA	66 GWh	Nov 1989	Dec 2025	Wind
Mojave 3/4/5	Terra-Gen Operating Co-Wind	Mojave, CA	125 GWh	Nov 1990	Dec 2025	Wind
Mojave Siphon	California Dept. of Water Resources	Hesperia, CA	46 GWh	Jul 1996	Dec 2025	Water
Mojave Solar Project	Mojave Solar LLC	Hinkley, CA	588 GWh	Nov 2014	Jul 2026	Solar
Monterey One Water	Monterey One Water	Marina, CA	8 GWh	Jul 1988	Dec 2025	Other Biomass Gas : 78.5% Natural Gas : 21.5%
Monterey Regional Water Pollution Contro	Tesla Inc.	Marina, CA	1 GWh	Nov 2010	Dec 2025	Solar
Montezuma Wind II	NextEra Energy Montezuma Wind II, LLC	Birds Landing, CA	196 GWh	Dec 2011	Dec 2025	Wind
Montgomery Creek Hydro	Central Rivers Power US, LLC	Montgomery Creek, CA	9 GWh	Dec 1986	Dec 2025	Water
Monticello Dam	Solano Irrigation District	Winters, CA	41 GWh	May 1983	Dec 2025	Water
Moonlight Packing - Phase 2	CalCom Energy	Reedley, CA	3 GWh	May 2019	Dec 2025	Solar
Morelos del Sol	Southern Power Co	Lost Hills, CA	31 GWh	Oct 2015	Dec 2025	Solar
Morgan Lancaster 1	Terraform Arcadia	Lancaster, CA	818 MWh	Aug 2015	Dec 2025	Solar
Mount Signal Solar Farm II	MN8 Energy LLC	Calexico, CA	358 GWh	Dec 2019	Jul 2026	Solar
Mount Signal Solar Farm V	Imperial Valley Solar 3, LLC	Calexico, CA	633 GWh	Oct 2018	Jul 2026	Solar
Mountain View I & II	AES Distributed Energy	North Palm Springs, CA	248 GWh	May 2001	Jul 2026	Wind
Mountain View III	Avangrid Power LLC	North Palm Springs, CA	81 GWh	Nov 2003	Dec 2025	Wind
Mountain View Ind Park 1-sline001	Prologis Logistics Services Incorporated	Fontana, CA	371 MWh	Aug 2023	Dec 2025	Solar
Mountain View IV	AES Distributed Energy	North Palm Springs, CA	173 GWh	Jan 2012	Dec 2025	Wind
Mountainview Generating Station	Southern California Edison Co	Redlands, CA	1 TWh	Nov 2005	Jul 2026	Natural Gas
Muck Valley Hydroelectric	Malacha Hydro Limited Partnership	NA, CA	90 GWh	Nov 1988	Dec 2025	Water
Municipal Cogen Plant	Palm Springs, City of - (CA)	Palm Springs, CA	8 GWh	Apr 1985	Jul 2026	Natural Gas
Munro Valley Solar	Ecos Energy LLC	Olancha, CA	9 GWh	Sep 2016	Dec 2025	Solar
Murphys	Utica Water & Power Authority	Murphys, CA	15 GWh	Feb 1954	Dec 2025	Water
Mustang Hills LLC	Mustang Hills, LLC (Longroad)	Mojave, CA	267 GWh	Apr 2012	Dec 2025	Wind
Mustang Two	RE Mustang Two LLC	Lemoore, CA	373 GWh	Oct 2020	Apr 2026	Solar
Nachtigall 1836-WD	Standard Solar	Wasco, CA	11 GWh	Nov 2024	Dec 2025	Solar
Nacimiento Hydro Project	Monterey Cnty Water Res Agency	Bradley, CA	12 GWh	Jun 1987	Dec 2025	Water
Narrows 2	Yuba County Water Agency - (CA)	Browns Valley, CA	181 GWh	Nov 1969	Dec 2025	Water
Narrows PH	Yuba County Water Agency - (CA)	Grass Valley, CA	73 GWh	Nov 1942	Dec 2025	Water
National Raisin	National Raisin	Fowler, CA	5 GWh	May 2015	Dec 2025	Solar
Navajo Solar Power Generation Station 1	AES Distributed Energy	Apple Valley, CA	4 GWh	Nov 2013	Dec 2025	Solar
Naval Air Weapons Station China Lake	MN8 Energy LLC	Ridgecrest, CA	24 GWh	Aug 2012	Dec 2025	Solar
Naval Hospital Medical Center	Department of the Navy	San Diego, CA	14 GWh	Nov 2003	Jul 2026	Natural Gas
Nelson Creek	Nelson Creek Power Inc	Big Bend, CA	3 GWh	Sep 1989	Dec 2025	Water
New Hogan Power Plant	Modesto Irrigation District	Valley Springs, CA	6 GWh	Mar 1989	Dec 2025	Water
New-Indy Ontario Mill	New-Indy Ontario LLC	Ontario, CA	244 GWh	May 1985	Jul 2026	Natural Gas
Newcastle	Pacific Gas & Electric Co.	Auburn, CA	6 GWh	Nov 1986	Dec 2025	Water
NextEra Westside PV	Westside Solar, LLC	Five Points, CA	26 GWh	Feb 2017	Dec 2025	Solar
Niagara Bottling - Rialto	SkyHigh 2 Solar	Rialto, CA	8 GWh	Nov 2021	Dec 2025	Solar
Niagara Bottling Stockton	ClearGen LLC	Stockton, CA	2 GWh	Dec 2017	Dec 2025	Solar
Nickel 1 Solar Facility	Altus Power America Management, LLC	Lost Hills, CA	2 GWh	Oct 2012	Dec 2025	Solar
Nicolis Solar PV Plant	Arevon Energy, Inc.	Delano, CA	46 GWh	Aug 2016	Dec 2025	Solar
NLP Granger	Heelstone Energy Holdings, LLC	Valley Center, CA	5 GWh	Aug 2016	Dec 2025	Solar
North Bay Solar 1	AES Distributed Energy	Fairfield, CA	2 GWh	Jul 2013	Dec 2025	Solar
North Juvenile Detention Center Solar	SoCore Energy LLC	Visalia, CA	2 GWh	Oct 2019	Dec 2025	Solar
North Kern 1	Madison Energy Investments LLC	Shafter, CA	7 GWh	May 2023	Dec 2025	Solar
North Kern 2	Madison Energy Investments LLC	City of Shafter, CA	6 GWh	Jun 2024	Dec 2025	Solar
North Kern 3	Madison Energy Investments LLC	Bakersfield, CA	14 GWh	Nov 2023	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