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
Riverside Energy Resource Center	City of Riverside - (CA)	Riverside, CA	17 GWh	May 2006	Dec 2025	Natural Gas
Glenarm	City of Pasadena - (CA)	Pasadena, CA	130 GWh	Dec 1975	Dec 2025	Natural Gas
Oxnard Wastewater Treatment Plant	City of Oxnard - (CA)	Oxnard, CA	3 GWh	Jul 1981	May 2026	Other Biomass Gas : 97.6% Natural Gas : 2.4%
Industry MetroLink PV 1	City of Industry - (CA)	Industry, CA	1 GWh	Mar 2012	Dec 2025	Solar
City of Hayward WWTP	City of Hayward (CA)	Hayward, CA	11 GWh	Oct 2010	Dec 2025	Other Biomass Gas : 72.3% Solar : 23.6% Natural Gas : 4.1%
Bear Valley	City of Escondido - (CA)	Escondido, CA	3 GWh	May 1986	Aug 2025	Water
Canyon Power Plant	City of Anaheim - (CA)	Anaheim, CA	19 GWh	Jul 2011	May 2026	Natural Gas
Moccasin Low Head Hydro Project	City & County of San Francisco - (CA)	Moccasin, CA	3 GWh	Jun 1987	Dec 2025	Water
SF Southeast Cogen Plant	City & County of San Francisco - (CA)	San Francisco, CA	341 MWh	May 2002	Dec 2025	Other Biomass Gas
R C Kirkwood	City & County of San Francisco - (CA)	Groveland, CA	489 GWh	Jan 1967	May 2026	Water
Moccasin	City & County of San Francisco - (CA)	Moccasin, CA	308 GWh	Jul 1969	May 2026	Water
Dion R Holm	City & County of San Francisco - (CA)	Groveland, CA	578 GWh	Jul 1960	May 2026	Water
West Village Solar - Array 1Community So	CHF-Davis I, LLC	Davis, CA	746 MWh	Apr 2022	Dec 2025	Solar
West Village Solar - Array 2 Community S	CHF-Davis I, LLC	Davis, CA	619 MWh	Apr 2022	Dec 2025	Solar
El Segundo Cogen	Chevron USA Inc-El Segundo	El Segundo, CA	1 TWh	Nov 1987	May 2026	Natural Gas : 99.8%
Cymric 36W Cogen	Chevron USA Inc	McKittrick, CA	53 GWh	Sep 1982	Dec 2025	Natural Gas
Kern River Eastridge Cogen	Chevron USA Inc	Bakersfield, CA	217 GWh	May 1988	May 2026	Natural Gas
Cymric 6Z Cogen	Chevron USA Inc	McKittrick, CA	27 GWh	Jun 1986	Dec 2025	Natural Gas
Cymric 31X Cogen	Chevron USA Inc	McKittrick, CA	17 GWh	Sep 1988	Dec 2025	Natural Gas
Southeast Kern River Cogen	Chevron USA Inc	Bakersfield, CA	31 GWh	Jan 1989	May 2026	Natural Gas
McKittrick Cogen	Chevron USA Inc	McKittrick, CA	61 GWh	May 2012	Dec 2025	Natural Gas
Coalinga 25D Cogen	Chevron USA Inc	Coalinga, CA	39 GWh	Sep 1986	Dec 2025	Natural Gas
Taft 26C Cogen	Chevron USA Inc	Taft, CA	43 GWh	Jun 1982	May 2026	Natural Gas
Richmond Cogen	Chevron Products Company-Richmond	Richmond, CA	956 GWh	Jul 1992	May 2026	Natural Gas : 97.6% Other Gas : 2.4%
Chestnut	Chestnut Westside LLC	Lemoore, CA	370 GWh	Nov 2023	May 2026	Solar
Chaffey College Rancho Cucamonga Campus	Chaffey Community College District	Rancho Cucamonga, CA	7 GWh	Jan 2017	Dec 2025	Solar
Las Positas College	Chabot Las Positas Community College District	Livermore, CA	2 GWh	Jul 2018	Dec 2025	Solar
Conflitti Solar	CES Electron Farm One, LLC	Firebaugh, CA	100 MWh	-	Dec 2025	Solar
Montgomery Creek Hydro	Central Rivers Power US, LLC	Montgomery Creek, CA	9 GWh	Dec 1986	Dec 2025	Water
Bear Creek (CA)	Central Rivers Power US, LLC	Shingletown, CA	7 GWh	Dec 1989	Dec 2025	Water
CCCSD Wastewater Treatment Plnt	Central Contra Costa Sanitary District	Martinez, CA	20 GWh	Nov 1995	May 2026	Natural Gas
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%
Central Antelope Dry Ranch B LLC	Central Antelope Dry Ranch B, LLC	Lancaster, CA	6 GWh	Aug 2017	Dec 2025	Solar
Central 40	Central 40, LLC	Newman, CA	76 GWh	Jan 2021	May 2026	Solar
CD4	CD4	Mammoth Lakes, CA	236 GWh	Jun 2022	Dec 2025	Geothermal
Mitchell Solar, LLC	CD US Solar PO 3, LLC	Silver Lake, CA	4 GWh	Nov 2014	Dec 2025	Solar
Rudy Solar, LLC	CD US Solar PO 3, LLC	Silver Lake, CA	3 GWh	Nov 2014	Dec 2025	Solar
Madelyn Solar, LLC	CD US Solar PO 3, LLC	Silver Lake, CA	2 GWh	Nov 2014	Dec 2025	Solar
Ma	CD US Solar MT 2 LLC	Lancaster, CA	2 GWh	Sep 2013	Dec 2025	Solar
Horn	CD US Solar MT 2 LLC	Lancaster, CA	4 GWh	Sep 2013	Dec 2025	Solar
Watts 3115	CD US Solar MT 2 LLC	Adelanto, CA	4 GWh	Jul 2013	Dec 2025	Solar
Vinam	CD US Solar MT 2 LLC	Lancaster, CA	3 GWh	Jun 2013	Dec 2025	Solar
Rutan	CD US Solar MT 2 LLC	Palmdale, CA	3 GWh	Dec 2013	Dec 2025	Solar
Nunn	CD US Solar MT 2 LLC	Apple Valley, CA	1 GWh	Jun 2013	Dec 2025	Solar
Arrache 8083	CD US Solar MT 2 LLC	Palmdale, CA	3 GWh	Aug 2013	Dec 2025	Solar
Arrache 4013	CD US Solar MT 2 LLC	Palmdale, CA	4 GWh	Jul 2013	Dec 2025	Solar
Arrache 4006	CD US Solar MT 2 LLC	Palmdale, CA	2 GWh	Jul 2013	Dec 2025	Solar
CA OXNARD 2600 Sakioka Dr	Catalyze Oxnard 2600 Sakioka Drive Microgrid, LLC	Oxnard, CA	3 GWh	Jun 2025	Dec 2025	Solar
CA Jurupa Valley 3251 De Forest Circle	Catalyze Mira Loma 3251 De Forest Circle Microgrid LLC	Jurupa Valley, CA	8 GWh	Mar 2024	Dec 2025	Solar
CA Manteca 730 Spreckels Ave	Catalyze Manteca 730 Spreckels Avenue Microgrid LLC	Manteca, CA	100 MWh	Aug 2024	Dec 2025	Solar
Castle Rock Vineyards	Castle Rock Cooling	Delano, CA	2 GWh	Aug 2010	Oct 2025	Solar
Cascade Solar	Cascade Solar LLC	Joshua Tree, CA	51 GWh	Dec 2013	Dec 2025	Solar
Carson Cogeneration	Carson Cogeneration Co	Carson, CA	3 GWh	Nov 1989	Sep 2025	Natural Gas
Canal Energy S23, LLC	Canal Energy S23, LLC	Hanford, CA	10 GWh	Nov 2021	Dec 2025	Solar
CamChino Leasing LLC	CamChino Leasing LLC	Chino, CA	7 GWh	Nov 1987	Dec 2024	Natural Gas
Tehachapi Wind Resource II	CalWind Resources Inc	Tehachapi, CA	48 GWh	Dec 1996	Dec 2025	Wind
Tehachapi Wind Resource I	CalWind Resources Inc	Tehachapi, CA	12 GWh	Nov 1984	Dec 2025	Wind
CalRenew-1	CalRenew-1 LLC	Mendota, CA	2 GWh	Mar 2010	Dec 2025	Solar
King City Power Plant	Calpine King City Cogen LLC	King City, CA	27 GWh	Jan 1989	May 2026	Natural Gas
Greenleaf 1	Calpine Greenleaf Holding, Inc.	Yuba City, CA	3 GWh	Jan 1989	Dec 2025	Natural Gas
Gilroy Power Plant	Calpine Gilroy Cogen LP	Gilroy, CA	21 GWh	Sep 1987	Dec 2025	Natural Gas
Gilroy Peaking Energy Center	Calpine Gilroy Cogen LP	Gilroy, CA	31 GWh	Oct 2001	Dec 2025	Natural Gas
Feather River Energy Center	Calpine Corp-Yuba City	Yuba City, CA	35 GWh	Dec 2002	Dec 2025	Natural Gas
Yuba City Energy Center	Calpine Corp-Yuba City	Yuba City, CA	23 GWh	Jul 2002	Dec 2025	Natural Gas
King City Peaking	Calpine Corp-King City	King City, CA	5 GWh	Mar 2002	Dec 2025	Natural Gas
Pastoria Energy Facility, LLC	Calpine Corp - Pastoria Energy Center	Lebec, CA	3 TWh	Apr 2005	May 2026	Natural Gas
Metcalf Energy Center	Calpine Corp - Metcalf Energy Center	San Jose, CA	2 TWh	May 2005	May 2026	Natural Gas
Malaga Power LLC	CalPeak Power, LLC	Fresno, CA	4 GWh	Aug 2005	May 2026	Natural Gas
Midway Peaking LLC	CalPeak Power, LLC	Firebaugh, CA	6 GWh	Apr 2009	Dec 2025	Natural Gas
CalPeak Power Vaca Dixon Peaker Plant	CalPeak Power, LLC	Vacaville, CA	7 GWh	May 2002	Dec 2025	Natural Gas
CalPeak Power Enterprise Peaker Plant	CalPeak Power, LLC	Escondido, CA	2 GWh	Oct 2001	Dec 2025	Natural Gas
Border Hybrid Energy Center	CalPeak Power, LLC	San Diego, CA	9 GWh	Oct 2001	Dec 2025	Natural Gas
CalPeak Power Panoche Peaker Plant	CalPeak Power, LLC	Firebaugh, CA	2 GWh	Nov 2001	Dec 2025	Natural Gas
Springville Hydroelectric	Calleguas Mun Water District	Camarillo, CA	659 MWh	Feb 1994	Dec 2025	Water
East Portal Generator	Calleguas Mun Water District	Chatsworth, CA	5 GWh	Dec 1986	Dec 2025	Water
CSUF Trigeneration	California State University at Fullerton	Fullerton, CA	35 GWh	Sep 2010	May 2026	Natural Gas : 81.4% Solar : 18.6%
Elk Hills Cogen	California Resources Elk Hills LLC	Tupman, CA	88 GWh	Oct 1994	May 2026	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
California PV Energy at ISD WWTP	California PV Energy LLC	Oakley, CA	2 GWh	Jul 2014	Dec 2025	Solar
CA Dept of Public Health at Richmond	California PV Energy LLC	Richmond, CA	4 GWh	Dec 2016	Dec 2025	Solar
San Diego - NCRC at Vista	California PV Energy 3, LLC	Vista, CA	3 GWh	Feb 2021	Dec 2025	Solar
San Diego - EMDF at San Diego	California PV Energy 3, LLC	San Diego, CA	5 GWh	Mar 2021	Dec 2025	Solar
Chowchilla II	California Power Holdings LLC	Chowchilla, CA	16 GWh	May 2001	Dec 2024	Natural Gas
Red Bluff	California Power Holdings LLC	Red Bluff, CA	10 GWh	Jul 2001	Dec 2024	Natural Gas
California Institute of Technology	California Institute-Technology	Pasadena, CA	60 GWh	Jul 2003	May 2026	Natural Gas
CA Flats Solar 130, LLC	California Flats Solar 130, LLC	Shandon, CA	255 GWh	Oct 2017	May 2026	Solar
W E Warne	California Dept. of Water Resources	Gorman, CA	211 GWh	Oct 1982	Dec 2025	Water
Mojave Siphon	California Dept. of Water Resources	Hesperia, CA	46 GWh	Jul 1996	Dec 2025	Water
Thermalito Diverson Dam	California Dept. of Water Resources	Oroville, CA	10 GWh	Jun 1987	Dec 2025	Water
Alamo	California Dept. of Water Resources	Pearblossom, CA	66 GWh	Jun 1986	Dec 2025	Water
Edward C Hyatt	California Dept. of Water Resources	Oroville, CA	2 TWh	Feb 1968	May 2026	Water
Thermalito	California Dept. of Water Resources	Oroville, CA	302 GWh	Jan 1968	May 2026	Water
Devil Canyon	California Dept. of Water Resources	San Bernardino, CA	813 GWh	Nov 1972	May 2026	Water
D'Arrigo Brothers - Phase 4	CalCom Energy	Salinas, CA	4 GWh	Feb 2019	Dec 2025	Solar
Moonlight Packing - Phase 2	CalCom Energy	Reedley, CA	3 GWh	May 2019	Dec 2025	Solar
Graniterock Quarry	CalCom Energy	Aromas, CA	9 GWh	Aug 2022	Dec 2025	Solar
CalCity Solar 1	CalCity Solar 1, LLC	California City, CA	8 GWh	Oct 2019	Dec 2025	Solar
Windsor Floating Solar	CA ODEVI LLC	Windsor, CA	3 GWh	Oct 2020	Dec 2025	Solar
C&H Sugar Plant	C&H Sugar Company Inc	Crockett, CA	41 GWh	Sep 1957	Apr 2026	Purchased Steam

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