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
Collins Pine Project	Collins Pine Co	Chester, CA	15 GWh	Nov 1985	Dec 2025	Wood/Wood Waste Solids
Collierville Powerhouse	Northern California Power Agny	Murphys, CA	407 GWh	Oct 1989	Jul 2026	Water
Colgate	Yuba County Water Agency - (CA)	Dobbins, CA	1 TWh	Sep 1969	Oct 2025	Water
Coleman PH	Pacific Gas & Electric Co.	Anderson, CA	31 GWh	May 1979	Dec 2025	Water
Cold Canyon 1	Toro Energy of California SLO	San Luis Obispo, CA	11 GWh	Jun 2013	Dec 2025	Landfill Gas
Coalinga Cogeneration Facility	Aera Energy LLC-Coalinga	Coalinga, CA	42 GWh	May 1988	Dec 2025	Natural Gas
Coalinga 25D Cogen	Chevron USA Inc	Coalinga, CA	39 GWh	Sep 1986	Dec 2025	Natural Gas
Coachella Hills Wind	Terra-Gen Operating Co-Wind	Palm Springs, CA	202 GWh	Feb 2021	Jul 2026	Wind
CM48	RWE Clean Energy	Boulder City, NV	90 GWh	May 2010	Dec 2025	Solar
CM10	RWE Clean Energy	Boulder City, NV	18 GWh	Nov 2008	Dec 2025	Solar
Clovis North High School	Tesla Inc.	Fresno, CA	2 GWh	Nov 2017	Dec 2025	Solar
Clovis High School	Tesla Inc.	Clovis, CA	2 GWh	Mar 2018	Dec 2025	Solar
Clovis East High School	Tesla Inc.	Clovis, CA	1 GWh	Mar 2018	Dec 2025	Solar
Cloverdale Solar I	Altus Power America Management, LLC	Cloverdale, CA	1 GWh	May 2014	Dec 2025	Solar
Cloverdale Solar Center	Adapture Renewables, Inc.	Cloverdale, CA	2 GWh	Apr 2019	Dec 2025	Solar
Clearwater Power Plant	City of Riverside - (CA)	Corona, CA	4 GWh	Feb 2005	Dec 2025	Natural Gas
Civic Center East	SoCore Energy LLC	Visalia, CA	3 GWh	Nov 2020	Dec 2025	Solar
City of Tulare Water Facility	City of Tulare Water Pollution Control - (CA)	Tulare, CA	16 GWh	Dec 1990	Dec 2025	Natural Gas : 61.0% Other Biomass Gas : 20.1% Solar : 19.0%
City of Soledad Water Reclamation	Foundation HA Energy Generation, LLC	Soledad, CA	4 GWh	Oct 2014	Dec 2025	Wind
City of Rosamond (CA)	Standard Solar	Rosamond, CA	3 GWh	Apr 2023	Dec 2025	Solar
City of Madera WWTP	SunE GIL1, LLC	Madera, CA	2 GWh	Aug 2009	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%
City of Atwater NEM	SoCore Energy LLC	Atwater, CA	2 GWh	Nov 2024	Dec 2025	Solar
Citizen B	AES Distributed Energy	Mendota, CA	9 GWh	Nov 2015	Dec 2025	Solar
CID Solar, LLC	Onward Energy	Corcoran, CA	41 GWh	Nov 2014	Dec 2025	Solar
Chula Vista Energy Center	Wellhead Services, Inc	Chula Vista, CA	387 MWh	Apr 2001	Oct 2025	Natural Gas
Chuckawalla Valley State Prison	SunE CPA CDC1 LLC	Blythe, CA	502 MWh	May 2006	Dec 2025	Solar
Chuckawalla Solar	Altus Power America Management, LLC	Blythe, CA	7 GWh	May 2012	Dec 2025	Solar
Chowchilla II	California Power Holdings LLC	Chowchilla, CA	14 GWh	May 2001	Dec 2025	Natural Gas
Chili Bar	Sacramento Municipal Util Dist	Placerville, CA	25 GWh	Feb 1965	Dec 2025	Water
Childrens Hospital	DTE San Diego COGEN Inc.	San Diego, CA	26 GWh	Mar 2000	Jul 2026	Natural Gas
Chicago Park	Nevada Irrigation District	Colfax, CA	65 GWh	Oct 1965	Dec 2025	Water
Chevron - Lost Hills Hybrid	MN8 Energy LLC	Lost Hills, CA	63 GWh	Mar 2020	Jul 2026	Solar
Chestnut	Chestnut Westside LLC	Lemoore, CA	360 GWh	Nov 2023	Jul 2026	Solar
Chatsworth Industrial Center 1-SLLAX601	Prologis Logistics Services Incorporated	Chatsworth, CA	132 MWh	Sep 2025	Dec 2025	Solar
Chaparral Springs	Leeward Asset Management, LLC	Rosamond, CA	399 GWh	Mar 2025	Jul 2026	Solar
Chambers 4 - San Bernardino SNA7	MN8 Energy LLC	San Bernardino, CA	3 GWh	Nov 2018	Dec 2025	Solar
Chambers 4 - Riverside LGB6	MN8 Energy LLC	Riverside, CA	2 GWh	Nov 2018	Dec 2025	Solar
Chambers 4 - Rialto LGB8	MN8 Energy LLC	Rialto, CA	3 GWh	Nov 2018	Dec 2025	Solar
Chambers 4 - Redland LGB4	MN8 Energy LLC	Redlands, CA	4 GWh	Feb 2019	Dec 2025	Solar
Chambers 4 - Eastvale LGB3	MN8 Energy LLC	Eastvale, CA	5 GWh	Jan 2019	Dec 2025	Solar
Chambers 4 - Eastvale DCA2	MN8 Energy LLC	Eastvale, CA	3 GWh	Nov 2018	Dec 2025	Solar
Chalk Cliff Limited	WCAC Operating Company	Bakersfield, CA	3 GWh	Feb 1990	Jun 2026	Natural Gas
Chaffey College Rancho Cucamonga Campus	Chaffey Community College District	Rancho Cucamonga, CA	7 GWh	Jan 2017	Dec 2025	Solar
Century Generating Facility	Colton Power LP	Colton, CA	563 MWh	Aug 2001	Dec 2025	Natural Gas
Central San	REC CSD, LLC	Martinez, CA	3 GWh	Dec 2024	Dec 2025	Solar
Central CA Fuel Cell 1, LLC	Cordia	Tulare, CA	13 GWh	Apr 2018	Dec 2025	Natural Gas
Central Antelope Dry Ranch C	AES Distributed Energy	Lancaster, CA	39 GWh	Apr 2016	Dec 2025	Solar
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	72 GWh	Jan 2021	Jul 2026	Solar
Centinela Solar Energy	Centinela Solar Energy LLC	Calexico, CA	449 GWh	Jun 2013	Dec 2025	Solar
Center Hybrid	Southern California Edison Co	Norwalk, CA	2 GWh	Aug 2007	Dec 2025	Natural Gas
CED Ducor 4	RWE Clean Energy	Ducor, CA	52 GWh	Nov 2016	Dec 2025	Solar
CED Ducor 3	RWE Clean Energy	Ducor, CA	38 GWh	Nov 2016	Dec 2025	Solar
CED Ducor 2	RWE Clean Energy	Ducor, CA	52 GWh	Nov 2016	Dec 2025	Solar
CED Ducor 1	RWE Clean Energy	Ducor, CA	52 GWh	Nov 2016	Dec 2025	Solar
CED Avenal	RWE Clean Energy	Avenal, CA	16 GWh	Dec 2016	Dec 2025	Solar
CDCR (CA) - Wasco State Prison	SunE Wasco SP Owner, LLC	Wasco, CA	3 GWh	Nov 2013	Dec 2025	Solar
CDCR (CA) - Solano State Prison	SunE Solano SP Owner, LLC	Vacaville, CA	2 GWh	Nov 2013	Dec 2025	Solar
CDCR (CA) - Pleasant Valley State Prison	Team-Solar, Inc.	Coalinga, CA	3 GWh	Jun 2014	Dec 2025	Solar
CDCR (CA) - Corcoran State Prison	SunE Corcoran SP Owner, LLC	Corcoran, CA	7 GWh	Nov 2013	Dec 2025	Solar
CD4	CD4	Mammoth Lakes, CA	236 GWh	Jun 2022	Dec 2025	Geothermal
CCCSD Wastewater Treatment Plnt	Central Contra Costa Sanitary District	Martinez, CA	20 GWh	Nov 1995	Jul 2026	Natural Gas
Cawelo Water District Solar	Scooby Solar, LLC	Famoso, CA	7 GWh	Sep 2023	Dec 2025	Solar
Catalina Solar LLC	EDF Renewable Asset Holdings, Inc.	Rosamond, CA	265 GWh	Nov 2012	Nov 2025	Solar
Catalina Solar 2, LLC	Onward Energy	Rosamond, CA	55 GWh	Jul 2015	Dec 2025	Solar
Catalina Express	Altus Power America Management, LLC	San Pedro, CA	2 GWh	Nov 2020	Dec 2025	Solar
Castor Solar	ZGlobal Inc	Dustin Acres, CA	766 MWh	Mar 2016	Dec 2025	Solar
Castle Rock Vineyards	Castle Rock Cooling	Delano, CA	2 GWh	Aug 2010	Oct 2025	Solar
Case Vander Eyk, Jr Dairy Solar	Bravo REC Management LLC	Pixley, CA	2 GWh	Sep 2023	Dec 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
Carlsbad Energy Center	NRG California Peaker Operations LLC	Carlsbad, CA	201 GWh	Nov 2018	Jul 2026	Natural Gas
Caribou 2	Pacific Gas & Electric Co.	Belden, CA	491 GWh	Oct 1958	Jul 2026	Water
Caribou 1	Pacific Gas & Electric Co.	Belden, CA	276 GWh	May 1921	Dec 2025	Water
Canyon Power Plant	City of Anaheim - (CA)	Anaheim, CA	43 GWh	Jul 2011	Jul 2026	Natural Gas
Cantua Solar Station	Pacific Gas & Electric Co.	TBD, CA	23 GWh	May 2012	Dec 2025	Solar
Canal Energy S23, LLC	Canal Energy S23, LLC	Hanford, CA	10 GWh	Nov 2021	Dec 2025	Solar
Campo Verde Solar	Southern Power Co	El Centro, CA	293 GWh	Sep 2013	Dec 2025	Solar
Camp San Luis Obispo	Ecoplexus, Inc	San Luis Obispo, CA	2 GWh	Jul 2024	Dec 2025	Solar
Camino Solar Hybrid	Avangrid Power LLC	Rosamond, CA	134 GWh	Mar 2025	Jul 2026	Solar
Cameron Ridge LLC	Terra-Gen Operating Co-Wind	Mojave, CA	148 GWh	Nov 1984	Dec 2025	Wind
CamChino Leasing LLC	CamChino Leasing LLC	Chino, CA	2 GWh	Nov 1987	Dec 2025	Natural Gas
Camanche	East Bay Municipal Util Dist - (CA)	Clements & Wallace, CA	17 GWh	Jun 1983	Dec 2025	Water
CalTech - Pasadena Wilson Ave	Bloom Energy	Pasadena, CA	19 GWh	Nov 2019	Dec 2025	Natural Gas
CalTech - Pasadena (PPA)	Bloom Energy 2009 PPA	Pasadena, CA	7 GWh	Feb 2016	Dec 2025	Natural Gas
Caltech Central	Bloom Energy 2009 PPA	Pasadena, CA	8 GWh	Oct 2010	Dec 2025	Natural Gas
CalRenew-1	CalRenew-1 LLC	Mendota, CA	2 GWh	Mar 2010	Dec 2025	Solar
CalPortland Company Mojave Wind	CalPortland Company	Mojave, CA	24 GWh	Oct 2024	Dec 2025	Wind
CalPeak Power Vaca Dixon Peaker Plant	CalPeak Power, LLC	Vacaville, CA	7 GWh	May 2002	Dec 2025	Natural Gas
CalPeak Power Panoche Peaker Plant	CalPeak Power, LLC	Firebaugh, CA	2 GWh	Nov 2001	Nov 2025	Natural Gas
CalPeak Power Enterprise Peaker Plant	CalPeak Power, LLC	Escondido, CA	2 GWh	Oct 2001	Dec 2025	Natural Gas
Calistoga Power Plant	Geysers Power Co LLC	Middletown, CA	454 GWh	Feb 1984	Jul 2026	Geothermal
California Valley Solar Ranch	Clearway Energy Operating LLC	California Valley, CA	559 GWh	Aug 2012	Dec 2025	Solar
California State Univ at Channel Islands	SkyHigh 2 Solar	Camarillo, CA	8 GWh	Nov 2021	Dec 2025	Solar
California PV Energy at ISD WWTP	California PV Energy LLC	Oakley, CA	2 GWh	Jul 2014	Dec 2025	Solar
California Institute of Technology	California Institute-Technology	Pasadena, CA	74 GWh	Jul 2003	Jul 2026	Natural Gas
California City	MN8 Energy LLC	California City, CA	5 GWh	Jun 2018	Dec 2025	Solar
Calibrant Bakersfield LLC	Bay4 Energy Services, LLC	Bakersfield, CA	4 GWh	Jan 2022	Dec 2024	Solar
CalCity Solar 1	CalCity Solar 1, LLC	California City, CA	8 GWh	Oct 2019	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