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
Hat Creek 2	Pacific Gas & Electric Co.	Burney, CA	46 GWh	Aug 1921	Dec 2025	Water
ABEC #2 dba West-Star Dairy	ABEC #2 LLC	Buttonwillow, CA	8 GWh	Jan 2018	Dec 2025	Other Biomass Gas
Byron Highway Solar	RPCA Solar 3, LLC	Byron, CA	12 GWh	Oct 2022	Dec 2025	Solar
Mariposa Energy Project	Diamond Generating Corporation	Byron, CA	30 GWh	Sep 2012	Jul 2026	Natural Gas
Buena Vista Energy LLC	Leeward Asset Management, LLC	Byron, CA	96 GWh	Nov 2006	Dec 2025	Wind
Foundation RRM	Foundation CA Fund V Manager, LLC	Cabazon, CA	10 GWh	Nov 2012	Dec 2025	Wind
Foundation NWNA	Foundation CA Fund V Manager, LLC	Cabazon, CA	23 GWh	Nov 2012	Dec 2025	Wind
Cabazon Wind Partners	Shell Wind Energy Inc.	Cabazon, CA	108 GWh	Sep 2002	Dec 2025	Wind
Las Virgenes Municipal Water District	Tesla Inc.	Calabasas, CA	1 GWh	Jan 2014	Dec 2025	Solar
Imperial Solar Energy Center South	CSOLAR IV South LLC	Calexico, CA	251 GWh	Oct 2013	Dec 2025	Solar
Imperial Valley Solar, LLC	Imperial Valley Solar, LLC	Calexico, CA	442 GWh	Oct 2013	Dec 2025	Solar
Centinela Solar Energy	Centinela Solar Energy LLC	Calexico, CA	449 GWh	Jun 2013	Dec 2025	Solar
Drew Solar LLC	Drew Solar LLC	Calexico, CA	306 GWh	Oct 2022	Jul 2026	Solar
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
Wistaria Ranch Solar	RWE Clean Energy	Calexico, CA	268 GWh	Nov 2018	Jul 2026	Solar
California City	MN8 Energy LLC	California City, CA	5 GWh	Jun 2018	Dec 2025	Solar
CalCity Solar 1	CalCity Solar 1, LLC	California City, CA	8 GWh	Oct 2019	Dec 2025	Solar
California Valley Solar Ranch	Clearway Energy Operating LLC	California Valley, CA	559 GWh	Aug 2012	Dec 2025	Solar
Whitewater Hydro Plant	Desert Water Agency	California, CA	5 GWh	Mar 1986	Dec 2025	Water
Solar Gen 2 Solar Facility	Southern Power Co	Calipatria, CA	377 GWh	Oct 2014	Dec 2025	Solar
Springville Hydroelectric	Calleguas Mun Water District	Camarillo, CA	659 MWh	Feb 1994	Dec 2025	Water
Glass House Camarillo Cultivation	Glass House Camarillo Cultivation	Camarillo, CA	64 GWh	Jul 2012	Dec 2025	Natural Gas
California State Univ at Channel Islands	SkyHigh 2 Solar	Camarillo, CA	8 GWh	Nov 2021	Dec 2025	Solar
Golden Acorn Casino	Foundation HA Energy Generation, LLC	Campo, CA	4 GWh	Jun 2014	Jul 2026	Wind
Kumeyaay Wind	Leeward Asset Management, LLC	Campo, CA	131 GWh	Nov 2005	Dec 2025	Wind
RE Tranquillity	Southern Power Co	Cantua Creek, CA	485 GWh	Jun 2016	Dec 2025	Solar
Giffen Solar Park	Giffen Solar Park, LLC	Cantua Creek, CA	20 GWh	May 2017	Dec 2025	Solar
Great Valley Solar Portfolio Holdings, L	RWE Clean Energy	Cantua Creek, CA	492 GWh	Nov 2017	Jul 2026	Solar
Superior Almond Hulling	Renewable Solar, Inc	Cantua Creek, CA	472 MWh	Aug 2024	Dec 2025	Solar
Aspiration G	AES Distributed Energy	Cantua Creek, CA	21 GWh	Aug 2017	Dec 2025	Solar
Scarlet II Hybrid	EDPR Scarlet II LLC	Cantua Creek, CA	369 GWh	Nov 2024	Jul 2026	Solar
Legoland CA Phase I	Onyx Asset Services Group	Carlsbad, CA	1 GWh	May 2025	Dec 2025	Solar
Carlsbad Energy Center	NRG California Peaker Operations LLC	Carlsbad, CA	201 GWh	Nov 2018	Jul 2026	Natural Gas
Encina Water Pollution Control	Encina Joint Powers Authority	Carlsbad, CA	14 GWh	Oct 2008	Jul 2026	Other Biomass Gas : 94.0% Natural Gas : 6.0%
Life Technologies Carlsbad	Bloom Energy	Carlsbad, CA	9 GWh	Jul 2012	Dec 2025	Natural Gas
Total Energy Facilities	Los Angeles County Sanitation	Carson, CA	157 GWh	Dec 1985	Dec 2025	Other Biomass Gas : 94.7% Natural Gas : 5.3%
Carson Cogeneration	Carson Cogeneration Co	Carson, CA	3 GWh	Nov 1989	Sep 2025	Natural Gas
Watson Cogeneration	ARCO Products Co-Watson	Carson, CA	2 TWh	Nov 1987	Jul 2026	Natural Gas : 77.0% Other Gas : 22.7%
CPA 2132 E Dominguez	Prologis Logistics Services Incorporated	Carson, CA	913 MWh	Jul 2025	Dec 2025	Solar
CPA Wilmington 1	Prologis Logistics Services Incorporated	Carson, CA	1 GWh	Jul 2025	Dec 2025	Solar
Ameresco Chiquita Canyon	AMERESCO Chiquita Canyon LLC	Castaic, CA	2 GWh	Oct 2010	Dec 2024	Landfill Gas
Edom Hills Project 1 LLC	Edom Hills Project 1 LLC	Cathedral City, CA	5 GWh	Aug 2008	Jun 2025	Wind
East Portal Generator	Calleguas Mun Water District	Chatsworth, CA	5 GWh	Dec 1986	Dec 2025	Water
Chatsworth Industrial Center 1-SLLAX601	Prologis Logistics Services Incorporated	Chatsworth, CA	132 MWh	Sep 2025	Dec 2025	Solar
Collins Pine Project	Collins Pine Co	Chester, CA	15 GWh	Nov 1985	Dec 2025	Wood/Wood Waste Solids
Sierra Nevada Brewing Co Hybrid	Sierra Nevada Brewing Co	Chico, CA	11 GWh	Apr 2005	Dec 2025	Natural Gas : 65.7% Solar : 19.5% Other Biomass Gas : 14.9%
Enloe Medical - Chico	Bloom Energy	Chico, CA	15 GWh	May 2021	Dec 2025	Natural Gas
Sierra Pacific Chinese Camp	Sierra Pacific Industries	Chinese Camp, CA	5 GWh	Feb 2022	Dec 2025	Solar
CA Institute for Women	Ecoplexus, Inc	Chino, CA	2 GWh	Jan 2020	Dec 2025	Solar
CamChino Leasing LLC	CamChino Leasing LLC	Chino, CA	2 GWh	Nov 1987	Dec 2025	Natural Gas
San Antonio West Solar Rooftop	SS San Antonio West LLC	Chino, CA	2 GWh	Jul 2012	Dec 2025	Solar
Chowchilla II	California Power Holdings LLC	Chowchilla, CA	14 GWh	May 2001	Dec 2025	Natural Gas
Adera Solar	AES Distributed Energy	Chowchilla, CA	33 GWh	Nov 2015	Dec 2025	Solar
DGS Valley State Prison	Forefront Power, LLC	Chowchilla, CA	4 GWh	Jan 2021	Dec 2025	Solar
Avenue 26 Solar	RPCA Solar 1, LLC	Chowchilla, CA	13 GWh	Oct 2024	Dec 2025	Solar
DGS Central California Womens Facility	Forefront Power, LLC	Chowchilla, CA	3 GWh	Nov 2020	Dec 2025	Solar
Diamond H Dairy Power	Madera DP 2, LLC	Chowchilla, CA	12 GWh	Sep 2021	Dec 2025	Other Biomass Gas
County of San Diego SBRC	MN8 Energy LLC	Chula Vista, CA	2 GWh	Nov 2018	Dec 2025	Solar
SeaWorld Aquatica	Onyx Asset Services Group	Chula Vista, CA	2 GWh	Apr 2018	Dec 2025	Solar
Chula Vista Energy Center	Wellhead Services, Inc	Chula Vista, CA	387 MWh	Apr 2001	Oct 2025	Natural Gas
North Kern 2	Madison Energy Investments LLC	City of Shafter, CA	6 GWh	Jun 2024	Dec 2025	Solar
Indian Valley Dam Hydro Project	Yolo County Flood Control WCD	Clearlake Oaks, CA	11 GWh	Sep 1983	Aug 2025	Water
Camanche	East Bay Municipal Util Dist - (CA)	Clements & Wallace, CA	17 GWh	Jun 1983	Dec 2025	Water
SunZia Wind North	Pattern Operators LP	Clines Corner, NM	462 GWh	-	Jul 2026	Wind
Cloverdale Solar Center	Adapture Renewables, Inc.	Cloverdale, CA	2 GWh	Apr 2019	Dec 2025	Solar
Cloverdale Solar I	Altus Power America Management, LLC	Cloverdale, CA	1 GWh	May 2014	Dec 2025	Solar
ASTI	SunStrong Management, LLC	Cloverdale, CA	1 GWh	Jan 2009	Dec 2025	Solar
Clovis East High School	Tesla Inc.	Clovis, CA	1 GWh	Mar 2018	Dec 2025	Solar
Clovis High School	Tesla Inc.	Clovis, CA	2 GWh	Mar 2018	Dec 2025	Solar
Harris Farms Solar Facility	Harris Farms Inc	Coalinga, CA	3 GWh	Feb 2024	Dec 2025	Solar
DSH (CA) - Coalinga State Hospital	Team-Solar, Inc.	Coalinga, CA	4 GWh	Jun 2014	Dec 2025	Solar
CA-DGS RFP-Pleasant Valley State Prison	Forefront Power, LLC	Coalinga, CA	4 GWh	Dec 2023	Dec 2025	Solar
CDCR (CA) - Pleasant Valley State Prison	Team-Solar, Inc.	Coalinga, CA	3 GWh	Jun 2014	Dec 2025	Solar
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
Rollins	Nevada Irrigation District	Colfax, CA	37 GWh	Jul 1980	Dec 2025	Water
Chicago Park	Nevada Irrigation District	Colfax, CA	65 GWh	Oct 1965	Dec 2025	Water
Century Generating Facility	Colton Power LP	Colton, CA	563 MWh	Aug 2001	Dec 2025	Natural Gas
Drews Generating Facility	Colton Power LP	Colton, CA	570 MWh	Jul 2001	Dec 2025	Natural Gas
Agua Mansa Power Plant	E I Colton LLC	Colton, CA	4 GWh	May 2003	Dec 2025	Natural Gas
ESCA-LL-COLTON, LLC	Madison Energy Holdings LLC	Colton, CA	4 GWh	Aug 2021	Dec 2025	Solar
Colton Solar Two, LLC	Colton Solar Two, LLC	Colton, CA	789 MWh	Mar 2015	Dec 2025	Solar
Corcoran Irrigation District	Madison Energy Investments LLC	Corcoran, CA	4 GWh	Aug 2019	Sep 2025	Solar
Corcoran Solar 3	RWE Clean Energy	Corcoran, CA	48 GWh	Jan 2016	Dec 2025	Solar
Corcoran	Terraform Arcadia	Corcoran, CA	2 GWh	Dec 2013	Dec 2025	Solar
Corcoran Irrigation District Floating So	Solar Powered Ag, LLC	Corcoran, CA	3 GWh	Apr 2025	Dec 2025	Solar
CDCR (CA) - Corcoran State Prison	SunE Corcoran SP Owner, LLC	Corcoran, CA	7 GWh	Nov 2013	Dec 2025	Solar
Corcoran Solar 2	RWE Clean Energy	Corcoran, CA	47 GWh	Apr 2015	Dec 2025	Solar
CID Solar, LLC	Onward Energy	Corcoran, CA	41 GWh	Nov 2014	Dec 2025	Solar
Cottonwood Solar, LLC (City of Corcoran)	Onward Energy	Corcoran, CA	21 GWh	Apr 2015	Dec 2025	Solar
Corcoran Solar	RWE Clean Energy	Corcoran, CA	22 GWh	Jul 2013	Dec 2025	Solar
Clearwater Power Plant	City of Riverside - (CA)	Corona, CA	4 GWh	Feb 2005	Dec 2025	Natural Gas
Temescal Canyon RV, LLC	Temescal Canyon RV, LLC	Corona, CA	2 GWh	Apr 2011	Dec 2025	Solar
Temescal	Metropolitan Water District of S CA	Corona, CA	14 GWh	Jun 1983	Apr 2025	Water
Corona	Metropolitan Water District of S CA	Corona, CA	13 GWh	Jul 1983	Apr 2025	Water
SunZia Wind South	Pattern Operators LP	Corona, NM	2 TWh	-	Jul 2026	Wind
Orange Coast College PH2 Solar Project	Solar Star Coastal Pirate, LLC	Costa Mesa, CA	4 GWh	Apr 2022	Dec 2025	Solar
Crockett Cogen Project	Crockett Cogeneration	Crockett, CA	1 TWh	Nov 1995	Feb 2026	Natural Gas
C&H Sugar Plant	C&H Sugar Company Inc	Crockett, CA	36 GWh	Sep 1957	Jul 2026	Purchased Steam

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