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
Mojave Siphon	California Dept. of Water Resources	Hesperia, CA	46 GWh	Jul 1996	Dec 2025	Water
Hesperia	SunEdison LLC	Hesperia, CA	3 GWh	Jul 2014	Dec 2025	Solar
San Manuel Central Plant Cogens	Yuhaaviatam of San Manuel Nation	Highland, CA	18 GWh	May 2021	Dec 2025	Natural Gas
IGS KSBD	Altus Power America Management, LLC	Highland, CA	9 GWh	Feb 2022	Dec 2025	Solar
Desert Breeze Solar, LLC	Terra-Gen Operating Co-Solar	Hinkley, CA	34 GWh	-	May 2026	Solar
Lockhart Solar PV II	Terra-Gen Operating Co-Solar	Hinkley, CA	208 GWh	Jun 2023	May 2026	Solar
Mojave Solar Project	Mojave Solar LLC	Hinkley, CA	592 GWh	Nov 2014	May 2026	Solar
Lockhart Solar PV, LLC	Terra-Gen Operating Co-Solar	Hinkley, CA	241 GWh	Nov 1989	May 2026	Solar
Enerparc CA1 LLC	CleanCapital Holdings	Hollister, CA	3 GWh	May 2014	Dec 2025	Solar
Hollister Solar LLC	Ecos Energy LLC	Hollister, CA	4 GWh	Nov 2014	Dec 2025	Solar
Hollister Wastewater Facility	SunStrong Management, LLC	Hollister, CA	2 GWh	Oct 2011	Dec 2025	Solar
AES Huntington Beach Energy Project	AES Huntington Beach Energy, LLC	Huntington Beach, CA	2 TWh	Jan 2020	May 2026	Natural Gas
AES Huntington Beach LLC	AES Huntington Beach LLC	Huntington Beach, CA	7 GWh	May 1958	Mar 2026	Natural Gas
Plant No 2 Orange County	Orange County Sanitation Dist - (CA)	Huntington Beach, CA	47 GWh	May 1993	Dec 2025	Other Biomass Gas : 77.2% Natural Gas : 22.8%
Westlands Solar PV Farm	Boralex US Operations LLC	Huron, CA	39 GWh	Jan 2014	Dec 2025	Solar
Gates Solar Station	Pacific Gas & Electric Co.	Huron, CA	31 GWh	May 2013	Dec 2025	Solar
Huron Solar Station	Pacific Gas & Electric Co.	Huron, CA	28 GWh	May 2012	Dec 2025	Solar
West Gates Solar Station	Pacific Gas & Electric Co.	Huron, CA	14 GWh	Apr 2013	Dec 2025	Solar
Fifth Standard Solar PV, LLC (Hybrid)	RWE Clean Energy	Huron, CA	338 GWh	Aug 2023	May 2026	Solar
Big Creek Water Works	Big Creek Water Works Ltd	Hyampom, CA	6 GWh	Dec 1986	May 2026	Water
Industry MetroLink PV 1	City of Industry - (CA)	Industry, CA	1 GWh	Mar 2012	Dec 2025	Solar
Walnut Creek Energy Park	Walnut Creek LLC	Industry, CA	38 GWh	Mar 2013	May 2026	Natural Gas
Coso Energy Developers	Coso Operating Co LLC	Inyokern, CA	235 GWh	Nov 1988	Dec 2025	Geothermal
Coso Finance Partners	Coso Operating Co LLC	Inyokern, CA	364 GWh	Jun 1987	May 2026	Geothermal
Coso Power Developers	Coso Operating Co LLC	Inyokern, CA	316 GWh	Oct 1989	May 2026	Geothermal
Oaks HOA	Onyx Asset Services Group	Ione, CA	2 GWh	Mar 2025	Dec 2025	Solar
ATT Kelvin	Bloom Energy	Irvine, CA	8 GWh	Mar 2017	Dec 2025	Natural Gas
Bowerman Power LFG, LLC	Bowerman Power LFG, LLC	Irvine, CA	151 GWh	Mar 2016	Dec 2025	Landfill Gas
B Braun Medical	B Braun Medical Inc	Irvine, CA	29 GWh	Oct 1982	Mar 2025	Natural Gas
UCI Facilities Management Central Plant	University of California Irvine	Irvine, CA	114 GWh	Jun 2007	May 2026	Natural Gas
Irwindale Brew Yard, LLC	Irwindale Brew Yard, LLC	Irwindale, CA	517 MWh	Jan 2002	Apr 2025	Solar : 99.8%
Electra	Pacific Gas & Electric Co.	Jackson, CA	262 GWh	May 1948	May 2026	Water
Jacumba Solar Farm	Invenergy Services LLC	Jacumba, CA	46 GWh	Jun 2017	Dec 2025	Solar
Sonora 1	CleanCapital Holdings	Jamestown, CA	858 MWh	Nov 2013	Dec 2025	Solar
Tulloch	Oakdale&South San Joaquin Irrigation D.	Jamestown, CA	103 GWh	May 1958	Dec 2025	Water
Pacific-Ultrapower Chinese Station	IHI Power Services Corp	Jamestown, CA	102 GWh	Sep 1986	May 2026	Wood/Wood Waste Solids : 98.5% Gaseous Propane : 1.5%
Cascade Solar	Cascade Solar LLC	Joshua Tree, CA	51 GWh	Dec 2013	Dec 2025	Solar
Rush Creek	Southern California Edison Co	June lake, CA	30 GWh	Sep 1916	Dec 2025	Water
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
Dulles	Golden Springs Development Company LLC	Jurupa Valley, CA	2 GWh	Aug 2016	Dec 2025	Solar
Kern River 3	Southern California Edison Co	Kernville, CA	143 GWh	Feb 1921	Dec 2025	Water
Kettleman Solar -Centaurus	Boralex US Operations LLC	Kettleman City, CA	43 GWh	Jun 2015	Dec 2025	Solar
Community Solar Utica 1, LLC	AETS OpCo Holdings LLC	Kettleman, CA	2 GWh	Feb 2025	Dec 2025	Solar
Blackjack Solar	South County Packing	King City, CA	9 GWh	Nov 2020	Dec 2025	Solar
King City Power Plant	Calpine King City Cogen LLC	King City, CA	27 GWh	Jan 1989	May 2026	Natural Gas
King City Peaking	Calpine Corp-King City	King City, CA	5 GWh	Mar 2002	Dec 2025	Natural Gas
Kingsburg Solar	Altus Power America Management, LLC	Kingsburg, CA	6 GWh	Nov 2013	Dec 2025	Solar
Kingsburg Cogen	KES Kingsburg LP	Kingsburg, CA	8 GWh	Nov 1990	Sep 2025	Natural Gas
Kroger La Habra	Ralph's Grocery Company	La Habra, CA	2 GWh	Mar 2020	Dec 2024	Solar
University of California San Diego Hybri	University of California San Diego	La Jolla, CA	232 GWh	Jun 2001	May 2026	Natural Gas
Univ of California San Diego Solar	University of California San Diego	La Jolla, CA	4 GWh	Nov 2008	Dec 2025	Solar
Grossmont Hospital	Sharp Grossmont Hospital	La Mesa, CA	29 GWh	Jul 1983	Dec 2025	Natural Gas
PFMG Solar Grossmont Helix LLC	Altus Power America Management, LLC	La Mesa, CA	2 GWh	Apr 2018	Dec 2025	Solar
Staples La Mirada, CA	SunE WF3-ST Holdings, LLC	La Mirada, CA	1 GWh	Feb 2009	Dec 2025	Solar
Biola University Hybrid	Biola University	La Mirada, CA	14 GWh	Mar 1990	May 2026	Natural Gas
Gilead Sciences La Verne Rooftop Solar	Gilead Sciences, Inc. - La Verne	La Verne, CA	2 GWh	Jun 2021	Dec 2025	Solar
Weymouth Solar Plant	Metropolitan Water District of S CA	La Verne, CA	3 GWh	May 2016	Dec 2025	Solar
Lake Elsinore Canopies - Lakeside HS	Standard Solar	Lake Elsinore, CA	2 GWh	Feb 2022	Dec 2025	Solar
Isabella Hydro Project	Isabella Partners	Lake Isabella, CA	32 GWh	Nov 1990	Dec 2025	Water
MM Lopez Energy	MM Lopez Energy LLC	Lake View Terrace, CA	26 GWh	Nov 1998	Dec 2025	Landfill Gas
Portal	Southern California Edison Co	Lakeshore, CA	26 GWh	Nov 1956	Dec 2025	Water
Lancaster Solar 1	Boralex US Operations LLC	Lancaster, CA	2 GWh	Oct 2014	Dec 2025	Solar
Radiance Solar 5	Altus Power America Management, LLC	Lancaster, CA	3 GWh	Jun 2013	Dec 2025	Solar
Lancaster Solar 2	Boralex US Operations LLC	Lancaster, CA	2 GWh	Oct 2014	Dec 2025	Solar
Western Antelope Blue Sky Ranch A	AES Distributed Energy	Lancaster, CA	43 GWh	Oct 2014	Dec 2025	Solar
Lancaster Baptist Church	Tesla Inc.	Lancaster, CA	1 GWh	Nov 2011	Dec 2025	Solar
Alpine Solar	Alpine BESS LLC	Lancaster, CA	114 GWh	Jan 2013	Dec 2025	Solar
Division 3	Tesla Inc.	Lancaster, CA	1 GWh	May 2014	Dec 2025	Solar
Western Antelope Dry Ranch	AES Distributed Energy	Lancaster, CA	26 GWh	Nov 2016	Dec 2025	Solar
Kettering Solar 1	Tesla Inc.	Lancaster, CA	2 GWh	May 2014	Nov 2025	Solar
Summer North Solar	AES Distributed Energy	Lancaster, CA	13 GWh	Nov 2014	Dec 2025	Solar
Summer Solar D2	AES Distributed Energy	Lancaster, CA	2 GWh	Jun 2014	Dec 2025	Solar
Summer Solar C2	AES Distributed Energy	Lancaster, CA	3 GWh	May 2014	Dec 2025	Solar
Summer Solar B2	AES Distributed Energy	Lancaster, CA	3 GWh	May 2014	Dec 2025	Solar
Summer Solar A2	AES Distributed Energy	Lancaster, CA	3 GWh	May 2014	Dec 2025	Solar
Rodeo Solar D2	AES Distributed Energy	Lancaster, CA	3 GWh	Apr 2014	Dec 2025	Solar
Rodeo Solar C2	AES Distributed Energy	Lancaster, CA	4 GWh	Apr 2014	Dec 2025	Solar
Division 1	Tesla Inc.	Lancaster, CA	2 GWh	May 2014	Dec 2025	Solar
Horn	CD US Solar MT 2 LLC	Lancaster, CA	4 GWh	Sep 2013	Dec 2025	Solar
Lancaster Dry Farm Ranch B	AES Distributed Energy	Lancaster, CA	10 GWh	Oct 2014	Dec 2025	Solar
Radiance Solar 4	Altus Power America Management, LLC	Lancaster, CA	3 GWh	Jun 2013	Dec 2025	Solar
TA-High Desert LLC	TA-High Desert LLC	Lancaster, CA	58 GWh	Feb 2013	Dec 2025	Solar
Vinam	CD US Solar MT 2 LLC	Lancaster, CA	3 GWh	Jun 2013	Dec 2025	Solar
Kettering Solar 2	Tesla Inc.	Lancaster, CA	2 GWh	May 2014	Nov 2025	Solar
AV Solar Ranch One	AV Solar Ranch 1 LLC	Lancaster, CA	560 GWh	Jul 2014	May 2026	Solar
Division 2	Tesla Inc.	Lancaster, CA	2 GWh	May 2014	Dec 2025	Solar
Ma	CD US Solar MT 2 LLC	Lancaster, CA	2 GWh	Sep 2013	Dec 2025	Solar
Elevation Solar C	AES Distributed Energy	Lancaster, CA	107 GWh	Nov 2016	May 2026	Solar
Central Antelope Dry Ranch C	AES Distributed Energy	Lancaster, CA	39 GWh	Apr 2016	Dec 2025	Solar
North Lancaster Ranch	AES Distributed Energy	Lancaster, CA	39 GWh	Nov 2016	Dec 2025	Solar
Western Antelope Blue Sky B	AES Distributed Energy	Lancaster, CA	52 GWh	Nov 2016	Dec 2025	Solar
Lancaster WAD B	AES Distributed Energy	Lancaster, CA	7 GWh	Mar 2017	Dec 2025	Solar
Morgan Lancaster 1	Terraform Arcadia	Lancaster, CA	818 MWh	Aug 2015	Dec 2025	Solar
Gaskell West 1 Solar Facility	Southern Power Co	Lancaster, CA	56 GWh	Feb 2018	Dec 2025	Solar
Portal Ridge Solar B, LLC	Portal Ridge Solar, LLC	Lancaster, CA	53 GWh	Jan 2017	Dec 2025	Solar
Antelope Expansion 2	AES Distributed Energy	Lancaster, CA	234 GWh	Nov 2018	May 2026	Solar
Portal Ridge Solar C, LLC	Portal Ridge Solar, LLC	Lancaster, CA	29 GWh	Jan 2017	Dec 2025	Solar
Bayshore Solar A, LLC	AES Distributed Energy	Lancaster, CA	44 GWh	Nov 2017	Dec 2025	Solar
Bayshore Solar C, LLC	AES Distributed Energy	Lancaster, CA	41 GWh	Nov 2017	Dec 2025	Solar
Bayshore Solar B, LLC	AES Distributed Energy	Lancaster, CA	42 GWh	Nov 2017	Dec 2025	Solar

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