California Independent System Operator

Balancing Authority Summary Information

California Independent System Operator is ranked #7 out of 65 balancing authorities in terms of total annual electricity generation.

Balancing Authority	California Independent System Operator
States	Arizona California Nevada
Last Update	May 2025
Annual Generation	189.5 TWh
Power Plants	1,943
Utilities	893
Ranked #7 out of 65 in terms of net annual generation
Ranked #7 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 43.6% Solar \| 24.8% Water \| 11.6% Wind \| 10.8% Nuclear \| 9.7%

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Daily Net Generation for California Independent System Operator for the past 3 Years

Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
Mount Signal Solar Farm V	Imperial Valley Solar 3, LLC	Calexico, CA	618 GWh	Oct 2018	Feb 2025	Solar
CalCity Solar 1	CalCity Solar 1, LLC	California City, CA	7 GWh	Oct 2019	Dec 2023	Solar
California City	MN8 Energy LLC	California City, CA	5 GWh	Jun 2018	Dec 2023	Solar
California Valley Solar Ranch	Clearway Energy Operating LLC	California Valley, CA	624 GWh	Aug 2012	Dec 2023	Solar
Whitewater Hydro Plant	Desert Water Agency	California, CA	3 GWh	Mar 1986	Dec 2023	Water
Solar Gen 2 Solar Facility	Southern Power Co	Calipatria, CA	377 GWh	Oct 2014	Dec 2023	Solar
Springville Hydroelectric	Calleguas Mun Water District	Camarillo, CA	363 MWh	Feb 1994	Dec 2023	Water
Glass House Camarillo Cultivation	Glass House Camarillo Cultivation	Camarillo, CA	45 GWh	Jul 2012	Dec 2023	Natural Gas
CSUCI Site Authority	CSUCI Site Authority	Camarillo, CA	3 GWh	Feb 1988	Sep 2024	Natural Gas
California State Univ at Channel Islands	SkyHigh 2 Solar	Camarillo, CA	8 GWh	Nov 2021	Dec 2023	Solar
Kumeyaay Wind	Leeward Asset Management, LLC	Campo, CA	145 GWh	Nov 2005	Dec 2023	Wind
Golden Acorn Casino	Foundation HA Energy Generation, LLC	Campo, CA	4 GWh	Jun 2014	Feb 2025	Wind
Aspiration G	AES Distributed Energy	Cantua Creek, CA	20 GWh	Aug 2017	Dec 2023	Solar
RE Tranquillity	Southern Power Co	Cantua Creek, CA	450 GWh	Jun 2016	Dec 2023	Solar
Giffen Solar Park	Giffen Solar Park, LLC	Cantua Creek, CA	22 GWh	May 2017	Dec 2023	Solar
Great Valley Solar Portfolio Holdings, LLC	Consolidated Edison Development Inc.	Cantua Creek, CA	536 GWh	Nov 2017	Feb 2025	Solar
Scarlet II Hybrid	EDPR Scarlet II LLC	Cantua Creek, CA	56 GWh	-	Feb 2025	Solar
Encina Water Pollution Control	Encina Joint Powers Authority	Carlsbad, CA	14 GWh	Oct 2008	Feb 2025	Other Biomass Gas : 96.0% Natural Gas : 4.0%
Carlsbad Energy Center	NRG California Peaker Operations LLC	Carlsbad, CA	257 GWh	Nov 2018	Feb 2025	Natural Gas
Life Technologies Carlsbad	Bloom Energy	Carlsbad, CA	8 GWh	Jul 2012	Dec 2023	Natural Gas
Total Energy Facilities	Los Angeles County Sanitation	Carson, CA	169 GWh	Dec 1985	Dec 2023	Other Biomass Gas : 79.6% Natural Gas : 20.4%
Carson Cogeneration	Carson Cogeneration Co	Carson, CA	35 GWh	Nov 1989	Dec 2023	Natural Gas
Watson Cogeneration	ARCO Products Co-Watson	Carson, CA	2 TWh	Nov 1987	Feb 2025	Natural Gas : 84.2% Other Gas : 15.5%
Foothill Feeder	Metropolitan Water District of S CA	Castaic, CA	20 GWh	Mar 1981	Dec 2023	Water
Ameresco Chiquita Canyon	AMERESCO Chiquita Canyon LLC	Castaic, CA	33 GWh	Oct 2010	Dec 2023	Landfill Gas
Edom Hills Project 1 LLC	Edom Hills Project 1 LLC	Cathedral City, CA	11 GWh	Aug 2008	Dec 2023	Wind
East Portal Generator	Calleguas Mun Water District	Chatsworth, CA	4 GWh	Dec 1986	Dec 2023	Water
Collins Pine Project	Collins Pine Co	Chester, CA	8 GWh	Nov 1985	Nov 2023	Wood/Wood Waste Solids
Sierra Nevada Brewing Co Hybrid	Sierra Nevada Brewing Co	Chico, CA	9 GWh	Apr 2005	Dec 2023	Natural Gas : 75.4% Solar : 24.6%
Enloe Medical - Chico	Bloom Energy	Chico, CA	13 GWh	May 2021	Dec 2023	Natural Gas
Sierra Pacific Chinese Camp	Sierra Pacific Industries	Chinese Camp, CA	5 GWh	Feb 2022	Dec 2023	Solar
CA Institute for Women	Ecoplexus, Inc	Chino, CA	2 GWh	Jan 2020	Dec 2023	Solar
San Antonio West Solar Rooftop	SS San Antonio West LLC	Chino, CA	2 GWh	Jul 2012	Dec 2023	Solar
OLS Energy Chino	OLS Energy-Chino	Chino, CA	11 GWh	Nov 1987	Dec 2023	Natural Gas
Solar Photovoltaic Project #02	Southern California Edison Co	Chino, CA	483 MWh	Nov 2009	Apr 2023	Solar
Ampersand Chowchilla Biomass LLC	Ampersand Chowchilla Biomass LLC	Chowchilla, CA	49 GWh	Apr 2008	Mar 2023	Wood/Wood Waste Solids : 99.8%
Chowchilla II	California Power Holdings LLC	Chowchilla, CA	14 GWh	May 2001	Dec 2023	Natural Gas
Adera Solar	AES Distributed Energy	Chowchilla, CA	27 GWh	Nov 2015	Dec 2023	Solar
Diamond H Dairy Power	Madera DP 2, LLC	Chowchilla, CA	11 GWh	Sep 2021	Dec 2023	Other Biomass Gas
DGS Central California Womens Facility	Forefront Power, LLC	Chowchilla, CA	3 GWh	Nov 2020	Dec 2023	Solar
DGS Valley State Prison	Forefront Power, LLC	Chowchilla, CA	4 GWh	Jan 2021	Dec 2023	Solar
County of San Diego SBRC	MN8 Energy LLC	Chula Vista, CA	2 GWh	Nov 2018	Dec 2023	Solar
SeaWorld Aquatica	Onyx Asset Services Group	Chula Vista, CA	2 GWh	Apr 2018	Dec 2023	Solar
Chula Vista Energy Center	Wellhead Services, Inc	Chula Vista, CA	2 GWh	Apr 2001	Dec 2023	Natural Gas
Indian Valley Dam Hydro Project	Yolo County Flood Control WCD	Clearlake Oaks, CA	6 GWh	Sep 1983	Sep 2023	Water
Camanche	East Bay Municipal Util Dist	Clements & Wallace, CA	58 GWh	Jun 1983	Dec 2023	Water
Cloverdale Solar I	Altus Power America Management, LLC	Cloverdale, CA	2 GWh	May 2014	Dec 2023	Solar
ASTI	Perpetual Energy Systems	Cloverdale, CA	1 GWh	Jan 2009	Dec 2023	Solar
Cloverdale Solar Center	Adapture Renewables, Inc.	Cloverdale, CA	2 GWh	Apr 2019	Dec 2023	Solar
Clovis East High School	Tesla Inc.	Clovis, CA	1 GWh	Mar 2018	Dec 2023	Solar
Clovis High School	Tesla Inc.	Clovis, CA	1 GWh	Mar 2018	Dec 2023	Solar
Coalinga Cogeneration Facility	Aera Energy LLC-Coalinga	Coalinga, CA	44 GWh	May 1988	Dec 2023	Natural Gas
DSH (CA) - Coalinga State Hospital	Team-Solar, Inc.	Coalinga, CA	4 GWh	Jun 2014	Dec 2023	Solar
CDCR (CA) - Pleasant Valley State Prison	Team-Solar, Inc.	Coalinga, CA	2 GWh	Jun 2014	Dec 2023	Solar
Coalinga 25D Cogen	Chevron USA Inc	Coalinga, CA	67 GWh	Sep 1986	Dec 2023	Natural Gas
Rollins	Nevada Irrigation District	Colfax, CA	73 GWh	Jul 1980	Dec 2023	Water
Chicago Park	Nevada Irrigation District	Colfax, CA	135 GWh	Oct 1965	Dec 2023	Water
Agua Mansa Power Plant	E I Colton LLC	Colton, CA	10 GWh	May 2003	Dec 2023	Natural Gas
Drews Generating Facility	Colton Power LP	Colton, CA	606 MWh	Jul 2001	Dec 2023	Natural Gas
Colton Solar Two, LLC	Colton Solar Two, LLC	Colton, CA	1 GWh	Mar 2015	Dec 2023	Solar
Century Generating Facility	Colton Power LP	Colton, CA	651 MWh	Aug 2001	Dec 2023	Natural Gas
ESCA-LL-COLTON, LLC	Madison Energy Holdings LLC	Colton, CA	5 GWh	Aug 2021	Dec 2023	Solar
Corcoran	Terraform Arcadia	Corcoran, CA	2 GWh	Dec 2013	Dec 2023	Solar
CDCR (CA) - Corcoran State Prison	SunE Corcoran SP Owner, LLC	Corcoran, CA	9 GWh	Nov 2013	Dec 2023	Solar
CID Solar (CA)	DG California Solar LLC	Corcoran, CA	3 GWh	Aug 2019	Dec 2023	Solar
Cottonwood Solar, LLC (City of Corcoran)	Onward Energy	Corcoran, CA	21 GWh	Apr 2015	Dec 2023	Solar
CID Solar, LLC	Onward Energy	Corcoran, CA	39 GWh	Nov 2014	Dec 2023	Solar
Corcoran Solar 2	Consolidated Edison Development Inc.	Corcoran, CA	47 GWh	Apr 2015	Dec 2023	Solar
Corcoran Solar 3	Consolidated Edison Development Inc.	Corcoran, CA	49 GWh	Jan 2016	Dec 2023	Solar
Corcoran Solar	Consolidated Edison Development Inc.	Corcoran, CA	35 GWh	Jul 2013	Dec 2023	Solar
Temescal Canyon RV, LLC	Temescal Canyon RV, LLC	Corona, CA	2 GWh	Apr 2011	Dec 2023	Solar
Clearwater Power Plant	City of Riverside - (CA)	Corona, CA	13 GWh	Feb 2005	Dec 2023	Natural Gas
Corona	Metropolitan Water District of S CA	Corona, CA	4 GWh	Jul 1983	Dec 2023	Water
Temescal	Metropolitan Water District of S CA	Corona, CA	7 GWh	Jun 1983	Dec 2023	Water
Orange Coast College PH2 Solar Project	Solar Star Coastal Pirate, LLC	Costa Mesa, CA	5 GWh	Apr 2022	Dec 2023	Solar : 88.9% Electricity used for energy storage : 11.1%
C&H Sugar Plant	C&H Sugar Company Inc	Crockett, CA	32 GWh	Sep 1957	Feb 2025	Purchased Steam
Crockett Cogen Project	Crockett Cogeneration	Crockett, CA	1 TWh	Nov 1995	Feb 2025	Natural Gas
Covanta Stanislaus Energy	Covanta Stanislaus Inc	Crows Landing, CA	62 GWh	Aug 1988	Dec 2024	Non-biogenic Municipal Solid Waste : 50.0% Biogenic Municipal Solid Waste : 40.9% Distillate Fuel Oil : 9.1%
Proxima	Proxima Solar, LLC	Crows Landing, CA	317 GWh	-	Feb 2025	Solar
Paulsell	Crow Creek Solar, LLC	Crows Landing, CA	28 GWh	-	Feb 2025	Solar
APP Prune A-D	Bloom Energy	Cupertino, CA	27 GWh	Apr 2017	Dec 2023	Natural Gas
Apple Campus 2 Fuel Cell	Apple, Inc	Cupertino, CA	26 GWh	May 2017	Dec 2023	Landfill Gas
Apple Campus 2 PV	Apple, Inc	Cupertino, CA	16 GWh	May 2017	Dec 2023	Solar
Cuyama Solar, LLC	Cuyama Solar, LLC	Cuyama, CA	64 GWh	Oct 2017	Feb 2025	Solar
Sunray 2	Sunray Energy 2, LLC	Daggett, CA	57 GWh	Nov 1984	Dec 2023	Solar
Sunray 3	Sunray Energy 3 LLC	Daggett, CA	33 GWh	Nov 1985	Dec 2023	Solar
Daggett 3	Daggett Solar Power 3 LLC	Daggett, CA	887 GWh	Jun 2023	Feb 2025	Solar
Daggett 2	Daggett Solar Power 2 LLC	Daggett, CA	539 GWh	Nov 2023	Feb 2025	Solar
McFarland B Solar and Storage	AES Clean Energy	Dateland, AZ	30 GWh	-	Feb 2025	Solar
McFarland A Solar and Storage	AES Clean Energy	Dateland, AZ	462 GWh	Nov 2023	Feb 2025	Solar
Agua Caliente Solar Project	Agua Caliente Solar	Dateland, AZ	626 GWh	Apr 2012	Feb 2025	Solar
Grassland 1&2 Solar Project	Yolo County of	Davis, CA	2 GWh	Jun 2013	Dec 2023	Solar
UC Davis South Campus	Solar Star California XXXII, LLC	Davis, CA	23 GWh	Feb 2015	Dec 2023	Solar
Grassland 3&4 Solar Project	Yolo County of	Davis, CA	2 GWh	Jun 2013	Nov 2023	Solar
West Village Solar - Array 2 Community Solar	CHF-Davis I, LLC	Davis, CA	2 GWh	Apr 2022	Dec 2023	Solar
West Village Solar - Array 1Community Solar	CHF-Davis I, LLC	Davis, CA	2 GWh	Apr 2022	Dec 2023	Solar
POM Plant 2	Wonderful Renewable Energy, LLC.	Del Rey, CA	292 MWh	Nov 2021	Dec 2023	Solar
POM Beverage Solar	Wonderful Renewable Energy, LLC.	Del Rey, CA	4 GWh	Jun 2021	Dec 2023	Solar
POM Plant 1	Wonderful Renewable Energy, LLC.	Del Rey, CA	2 GWh	Nov 2021	Dec 2023	Solar
North Kern State Prison Phase II	SunE P11L Holdings, LLC	Delano, CA	7 GWh	Aug 2012	Dec 2023	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#27	Arizona Public Service Company	22.7 TWh	75
#55	Arlington Valley, LLC	3.3 TWh	1
#36	Balancing Authority of Northern California	15.0 TWh	83
#48	Imperial Irrigation District	5.8 TWh	65
#33	Los Angeles Department of Water and Power	17.4 TWh	120
#22	Nevada Power Company	38.1 TWh	136
#54	New Harquahala Generating Company, LLC	3.6 TWh	1
#18	Salt River Project Agricultural Improvement and Power District	58.5 TWh	45
#58	Turlock Irrigation District	2.1 TWh	11
#42	Western Area Power Administration - Desert Southwest Region	8.3 TWh	30

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#3	Electric Reliability Council of Texas, Inc.	474.5 TWh	1,139
#5	Southwest Power Pool	296.3 TWh	762
#6	Southern Company Services, Inc. - Trans	252.3 TWh	393
#7	California Independent System Operator	189.5 TWh	1,943
#8	Tennessee Valley Authority	158.9 TWh	170
#10	Florida Power & Light Co.	148.5 TWh	159
#12	New York Independent System Operator	130.9 TWh	1,100
#13	Duke Energy Carolinas	111.3 TWh	556
#15	ISO New England	103.6 TWh	1,487
#16	Bonneville Power Administration	83.0 TWh	158