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
Open Sky Dairy	Renewable Solar, Inc	Riverdale, CA	419 MWh	Jun 2024	Dec 2025	Solar
One Ten Partners PV	One Ten Partners, LLC	Palmdale, CA	6 GWh	Aug 2017	Dec 2025	Solar
One Market Plaza	Paramount Group Inc	San Francisco, CA	1 GWh	Nov 2003	Dec 2025	Natural Gas
Oltmans SCE at Jurupa	California PV Energy LLC	Ontario, CA	2 GWh	Nov 2013	Dec 2025	Solar
Oltmans SCE at Champagne	California PV Energy LLC	Ontario, CA	2 GWh	Nov 2013	Dec 2025	Solar
Olsen	Olsen Power Partners	Whitmore, CA	15 GWh	Dec 1989	Dec 2025	Water
OK Produce Fresno Carport	OK Produce	Fresno, CA	3 GWh	Dec 2018	Dec 2025	Solar
OES Biogas Power	Organic Energy Solutions, Inc.	San Bernardino, CA	904 MWh	-	Dec 2025	Other Biomass Gas
Ocotillo Wells	Conductive Power	Borrego Springs, CA	101 GWh	Aug 2023	Jul 2026	Solar
Ocotillo Express LLC	Pattern Operators LP	Ocotillo, CA	411 GWh	Nov 2012	Jul 2026	Wind
Oberon Solar Project	Intersect USA, LLC	Desert Center, CA	559 GWh	Aug 2023	Jul 2026	Solar
Oberon II Solar Project	Intersect USA, LLC	Desert Center, CA	563 GWh	Aug 2023	Jul 2026	Solar
Oasis Wind	Terra-Gen Operating Co-Wind	Mojave, CA	221 GWh	Nov 2004	Dec 2025	Wind
Oasis Alta	Terra-Gen Operating Co-Wind	Mojave, CA	49 GWh	Mar 2021	Dec 2025	Wind
Oaks HOA	Onyx Asset Services Group	Ione, CA	2 GWh	Mar 2025	Dec 2025	Solar
Oakley Solar Project	Oakley Solar Project LLC	Oakley, CA	2 GWh	May 2013	Dec 2025	Solar
Oak Creek Energy Systems I	Terra-Gen Operating Co-Wind	Mojave, CA	57 GWh	May 1982	Dec 2025	Wind
Nunn	CD US Solar MT 2 LLC	Apple Valley, CA	1 GWh	Jun 2013	Dec 2025	Solar
Northern Orchard Solar PV, LLC	RWE Clean Energy	Taft, CA	416 GWh	Jun 2025	Jul 2026	Solar
North Star Solar	Southern Power Co	Mendota, CA	133 GWh	May 2015	Dec 2025	Solar
North Sky River Energy LLC	North Sky River Energy LLC	Weldon, CA	365 GWh	Nov 2012	Dec 2025	Wind
North Rosamond Solar LLC	North Rosamond Solar, LLC	Rosamond, CA	361 GWh	May 2019	Jul 2026	Solar
North Palm Springs 4A	Altus Power America Management, LLC	Palm Springs, CA	8 GWh	Sep 2012	Dec 2025	Solar
North Palm Springs 1A	Altus Power America Management, LLC	Palm Springs, CA	5 GWh	Mar 2012	Dec 2025	Solar
North Lancaster Ranch	AES Distributed Energy	Lancaster, CA	39 GWh	Nov 2016	Dec 2025	Solar
North Kern State Prison Phase II	SunE P11L Holdings, LLC	Delano, CA	7 GWh	Aug 2012	Dec 2025	Solar
North Kern 3	Madison Energy Investments LLC	Bakersfield, CA	14 GWh	Nov 2023	Dec 2025	Solar
North Kern 2	Madison Energy Investments LLC	City of Shafter, CA	6 GWh	Jun 2024	Dec 2025	Solar
North Kern 1	Madison Energy Investments LLC	Shafter, CA	7 GWh	May 2023	Dec 2025	Solar
North Juvenile Detention Center Solar	SoCore Energy LLC	Visalia, CA	2 GWh	Oct 2019	Dec 2025	Solar
North Bay Solar 1	AES Distributed Energy	Fairfield, CA	2 GWh	Jul 2013	Dec 2025	Solar
NLP Granger	Heelstone Energy Holdings, LLC	Valley Center, CA	5 GWh	Aug 2016	Dec 2025	Solar
Nicolis Solar PV Plant	Arevon Energy, Inc.	Delano, CA	46 GWh	Aug 2016	Dec 2025	Solar
Nickel 1 Solar Facility	Altus Power America Management, LLC	Lost Hills, CA	2 GWh	Oct 2012	Dec 2025	Solar
Niagara Bottling Stockton	ClearGen LLC	Stockton, CA	2 GWh	Dec 2017	Dec 2025	Solar
Niagara Bottling - Rialto	SkyHigh 2 Solar	Rialto, CA	8 GWh	Nov 2021	Dec 2025	Solar
NextEra Westside PV	Westside Solar, LLC	Five Points, CA	26 GWh	Feb 2017	Dec 2025	Solar
Newcastle	Pacific Gas & Electric Co.	Auburn, CA	6 GWh	Nov 1986	Dec 2025	Water
New-Indy Ontario Mill	New-Indy Ontario LLC	Ontario, CA	244 GWh	May 1985	Jul 2026	Natural Gas
New Hogan Power Plant	Modesto Irrigation District	Valley Springs, CA	6 GWh	Mar 1989	Dec 2025	Water
Nelson Creek	Nelson Creek Power Inc	Big Bend, CA	3 GWh	Sep 1989	Dec 2025	Water
Naval Hospital Medical Center	Department of the Navy	San Diego, CA	14 GWh	Nov 2003	Jul 2026	Natural Gas
Naval Air Weapons Station China Lake	MN8 Energy LLC	Ridgecrest, CA	24 GWh	Aug 2012	Dec 2025	Solar
Navajo Solar Power Generation Station 1	AES Distributed Energy	Apple Valley, CA	4 GWh	Nov 2013	Dec 2025	Solar
National Raisin	National Raisin	Fowler, CA	5 GWh	May 2015	Dec 2025	Solar
Narrows PH	Yuba County Water Agency - (CA)	Grass Valley, CA	73 GWh	Nov 1942	Dec 2025	Water
Narrows 2	Yuba County Water Agency - (CA)	Browns Valley, CA	181 GWh	Nov 1969	Dec 2025	Water
Nacimiento Hydro Project	Monterey Cnty Water Res Agency	Bradley, CA	12 GWh	Jun 1987	Dec 2025	Water
Nachtigall 1836-WD	Standard Solar	Wasco, CA	11 GWh	Nov 2024	Dec 2025	Solar
Mustang Two	RE Mustang Two LLC	Lemoore, CA	373 GWh	Oct 2020	Apr 2026	Solar
Mustang Hills LLC	Mustang Hills, LLC (Longroad)	Mojave, CA	267 GWh	Apr 2012	Dec 2025	Wind
Murphys	Utica Water & Power Authority	Murphys, CA	15 GWh	Feb 1954	Dec 2025	Water
Munro Valley Solar	Ecos Energy LLC	Olancha, CA	9 GWh	Sep 2016	Dec 2025	Solar
Municipal Cogen Plant	Palm Springs, City of - (CA)	Palm Springs, CA	8 GWh	Apr 1985	Jul 2026	Natural Gas
Muck Valley Hydroelectric	Malacha Hydro Limited Partnership	NA, CA	90 GWh	Nov 1988	Dec 2025	Water
Mountainview Generating Station	Southern California Edison Co	Redlands, CA	1 TWh	Nov 2005	Jul 2026	Natural Gas
Mountain View IV	AES Distributed Energy	North Palm Springs, CA	173 GWh	Jan 2012	Dec 2025	Wind
Mountain View Ind Park 1-sline001	Prologis Logistics Services Incorporated	Fontana, CA	371 MWh	Aug 2023	Dec 2025	Solar
Mountain View III	Avangrid Power LLC	North Palm Springs, CA	81 GWh	Nov 2003	Dec 2025	Wind
Mountain View I & II	AES Distributed Energy	North Palm Springs, CA	248 GWh	May 2001	Jul 2026	Wind
Mount Signal Solar Farm V	Imperial Valley Solar 3, LLC	Calexico, CA	633 GWh	Oct 2018	Jul 2026	Solar
Mount Signal Solar Farm II	MN8 Energy LLC	Calexico, CA	358 GWh	Dec 2019	Jul 2026	Solar
Morgan Lancaster 1	Terraform Arcadia	Lancaster, CA	818 MWh	Aug 2015	Dec 2025	Solar
Morelos del Sol	Southern Power Co	Lost Hills, CA	31 GWh	Oct 2015	Dec 2025	Solar
Moonlight Packing - Phase 2	CalCom Energy	Reedley, CA	3 GWh	May 2019	Dec 2025	Solar
Monticello Dam	Solano Irrigation District	Winters, CA	41 GWh	May 1983	Dec 2025	Water
Montgomery Creek Hydro	Central Rivers Power US, LLC	Montgomery Creek, CA	9 GWh	Dec 1986	Dec 2025	Water
Montezuma Wind II	NextEra Energy Montezuma Wind II, LLC	Birds Landing, CA	196 GWh	Dec 2011	Dec 2025	Wind
Monterey Regional Water Pollution Contro	Tesla Inc.	Marina, CA	1 GWh	Nov 2010	Dec 2025	Solar
Monterey One Water	Monterey One Water	Marina, CA	8 GWh	Jul 1988	Dec 2025	Other Biomass Gas : 78.5% Natural Gas : 21.5%
Mojave Solar Project	Mojave Solar LLC	Hinkley, CA	588 GWh	Nov 2014	Jul 2026	Solar
Mojave Siphon	California Dept. of Water Resources	Hesperia, CA	46 GWh	Jul 1996	Dec 2025	Water
Mojave 3/4/5	Terra-Gen Operating Co-Wind	Mojave, CA	125 GWh	Nov 1990	Dec 2025	Wind
Mojave 16/17/18	Terra-Gen Operating Co-Wind	Mojave, CA	66 GWh	Nov 1989	Dec 2025	Wind
Moccasin Low Head Hydro Project	City & County of San Francisco - (CA)	Moccasin, CA	3 GWh	Jun 1987	Dec 2025	Water
Moccasin	City & County of San Francisco - (CA)	Moccasin, CA	305 GWh	Jul 1969	Jul 2026	Water
MM Yolo Power	Yolo County Community Services Department	Woodland, CA	16 GWh	Sep 1990	Dec 2025	Landfill Gas
MM West Covina	MM West Covina Energy LLC	West Covina, CA	40 GWh	May 1993	Dec 2025	Landfill Gas : 99.7%
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 Lopez Energy	MM Lopez Energy LLC	Lake View Terrace, CA	26 GWh	Nov 1998	Dec 2025	Landfill Gas
Mitchell Solar, LLC	CD US Solar PO 3, LLC	Silver Lake, CA	4 GWh	Nov 2014	Dec 2025	Solar
Mission Solar LLC	Ecos Energy LLC	Merced, CA	4 GWh	Nov 2014	Dec 2025	Solar
Mission College Blvd. Fuel Cell	2016 ESA Project Company, LLC	Santa Clara, CA	36 GWh	Nov 2017	Dec 2025	Natural Gas
Miramar Energy Facility	San Diego Gas & Electric Co	San Diego, CA	12 GWh	May 2005	Jul 2026	Natural Gas
Mira Loma Peaker	Southern California Edison Co	Ontario, CA	1 GWh	Aug 2007	Dec 2025	Natural Gas
Mira Loma	Costco Wholesale	Mira Loma, CA	2 GWh	Oct 2011	Dec 2025	Solar
Mill Creek 3	Southern California Edison Co	Mill Creek, CA	771 MWh	Feb 1903	Dec 2025	Water
Midway Sunset Cogen	Midway-Sunset Cogeneration Co	Fellows, CA	8 GWh	Apr 1989	Jul 2026	Natural Gas
Midway Peaking LLC	CalPeak Power, LLC	Firebaugh, CA	6 GWh	Apr 2009	Dec 2025	Natural Gas
Middle Fork	Placer County Water Agency - (CA)	Foresthill, CA	459 GWh	Sep 1966	Jul 2026	Water
Micro Santa Clara	Bloom Energy	San Jose, CA	25 GWh	Jun 2018	Dec 2025	Natural Gas
Metcalf Energy Center	Calpine Corp - Metcalf Energy Center	San Jose, CA	2 TWh	May 2005	Jul 2026	Natural Gas
Mesquite Solar 4, LLC	RWE Clean Energy	Tonopah, AZ	140 GWh	Dec 2023	Jul 2026	Solar
Mesquite Solar 3, LLC	RWE Clean Energy	Tonopah, AZ	437 GWh	Nov 2016	Jul 2026	Solar
Mesquite Solar 2, LLC	RWE Clean Energy	Tonopah, AZ	248 GWh	Nov 2016	Jul 2026	Solar
Mesquite Solar 1	RWE Clean Energy	Tonopah, AZ	392 GWh	Oct 2011	Dec 2025	Solar
Mesa Wind Repower	Mesa Wind Repower	Whitewater, CA	80 GWh	May 2024	Dec 2024	Wind
Mesa Wind Power LLC	Mesa Wind Power LLC	North Palm Springs, CA	117 GWh	Oct 1984	Jul 2026	Wind
Meridian Vineyards	CVI CleanCapital Solar 1 LLC	Paso Robles, CA	1 GWh	Nov 2010	Dec 2025	Solar
Merced Solar LLC	Ecos Energy LLC	Merced, CA	4 GWh	Nov 2014	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