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
ABEC #4 dba CE&S Dairy	ABEC #4 LLC	Bakersfield, CA	8 GWh	Jan 2018	Dec 2023	Other Biomass Gas
Sunny Cow Solar, LLC	Sunny Cow Solar, LLC	Bakersfield, CA	847 MWh	Sep 2023	Dec 2023	Solar
Laredo Detention Facility - Solar 2, 3	County of Kern	Bakersfield, CA	9 GWh	Oct 2021	Dec 2023	Solar
Kings River PH	Pacific Gas & Electric Co.	Balch Camp, CA	207 GWh	Feb 1962	Dec 2023	Water
Balch 2	Pacific Gas & Electric Co.	Balch Camp, CA	490 GWh	Oct 1958	Dec 2023	Water
Balch 1	Pacific Gas & Electric Co.	Balch Camp, CA	184 GWh	Jan 1927	Dec 2023	Water
Haas	Pacific Gas & Electric Co.	Balch Camp, CA	439 GWh	Nov 1958	Feb 2025	Water
Longboat Solar, LLC	Duke Energy Renewables Services	Barstow, CA	25 GWh	Nov 2016	Dec 2023	Solar
Ameresco Keller Canyon	AMERESCO Keller Canyon LLC	Bay Point, CA	29 GWh	Jun 2009	Dec 2023	Landfill Gas
Amazon PSP1	Greenbacker Renewable Energy Corporation	Beaumont, CA	8 GWh	Sep 2021	Dec 2023	Solar
Caribou 2	Pacific Gas & Electric Co.	Belden, CA	353 GWh	Oct 1958	Feb 2025	Water
Belden	Pacific Gas & Electric Co.	Belden, CA	365 GWh	Aug 1969	Nov 2024	Water
Butt Valley	Pacific Gas & Electric Co.	Belden, CA	147 GWh	Nov 1958	Dec 2023	Water
Caribou 1	Pacific Gas & Electric Co.	Belden, CA	198 GWh	May 1921	Dec 2023	Water
Valero Refinery Cogeneration Unit 1	Valero Refining Co California	Benicia, CA	171 GWh	Sep 2002	Feb 2025	Natural Gas : 96.3% Other Gas : 3.7%
Lake Herman	Greenbacker Renewable Energy Corporation	Benicia, CA	13 GWh	Oct 2021	Dec 2023	Solar
PE Berkeley	Berkeley Cogeneration Facility	Berkeley, CA	157 GWh	May 1987	Feb 2025	Natural Gas
Bear Valley Power Plant	Bear Valley Electric Service	Big Bear Lake, CA	2 GWh	Dec 2004	Dec 2023	Natural Gas
BBARWA	Distributed Solar Development, LLC	Big Bear, CA	3 GWh	Nov 2021	Dec 2023	Solar
Nelson Creek	Nelson Creek Power Inc	Big Bend, CA	3 GWh	Sep 1989	Dec 2023	Water
Pit 4	Pacific Gas & Electric Co.	Big Bend, CA	374 GWh	Jun 1955	Feb 2025	Water
James B Black	Pacific Gas & Electric Co.	Big Bend, CA	370 GWh	Nov 1965	Feb 2025	Water
Pit 5	Pacific Gas & Electric Co.	Big Bend, CA	445 GWh	Mar 1944	Feb 2025	Water
Big Creek 1	Southern California Edison Co	Big Creek, CA	394 GWh	Oct 1913	Dec 2023	Water
Shiloh Wind Project 2 LLC	EDF Renewable Asset Holdings, Inc.	Birds Landing, CA	432 GWh	Dec 2008	Dec 2023	Wind
High Winds LLC	FPLE High Winds, LLC	Birds Landing, CA	238 GWh	Jun 2003	Dec 2023	Wind
Shiloh III Wind Project LLC	EDF Renewable Asset Holdings, Inc.	Birds Landing, CA	276 GWh	Nov 2011	Dec 2023	Wind
FPL Energy Montezuma Winds LLC	FPL Energy Montezuma Wind	Birds Landing, CA	98 GWh	Oct 2010	Dec 2023	Wind
EDF Renewable Windfarm V Inc	EDF Renewable Asset Holdings, Inc.	Birds Landing, CA	21 GWh	Dec 1989	Dec 2023	Wind
Montezuma Wind II	NextEra Energy Montezuma Wind II, LLC	Birds Landing, CA	197 GWh	Dec 2011	Dec 2023	Wind
Shiloh IV Wind Project LLC	EDF Renewable Asset Holdings, Inc.	Birds Landing, CA	294 GWh	Nov 2012	Dec 2023	Wind
Bishop Creek 5	Southern California Edison Co	Bishop, CA	14 GWh	May 1919	Dec 2023	Water
Bishop Creek 4	Southern California Edison Co	Bishop, CA	50 GWh	Aug 1905	Dec 2023	Water
Bishop Creek 6	Southern California Edison Co	Bishop, CA	10 GWh	Feb 1913	Dec 2023	Water
Bishop Creek 2	Southern California Edison Co	Bishop, CA	36 GWh	Oct 1908	Dec 2023	Water
Bishop Creek 3	Southern California Edison Co	Bishop, CA	26 GWh	May 1913	Dec 2023	Water
Venable Solar 2	Venable Solar, LLC	Blythe, CA	3 GWh	Mar 2015	Dec 2023	Solar
Palo Verde College	Scale Sustainable I, LLC	Blythe, CA	2 GWh	Jul 2009	Dec 2023	Solar
Blythe Energy Inc	AltaGas Blythe Operations Inc	Blythe, CA	581 GWh	Nov 2003	Feb 2025	Natural Gas
Venable Solar 1	Venable Solar, LLC	Blythe, CA	3 GWh	Mar 2015	Dec 2023	Solar
Genesis Solar Energy Project	Genesis Solar LLC	Blythe, CA	645 GWh	Oct 2013	Feb 2025	Solar
Desert Quartzite	Desert Quartzite LLC	Blythe, CA	175 GWh	-	Feb 2025	Solar
Chuckawalla Valley State Prison	SunE CPA CDC1 LLC	Blythe, CA	1 GWh	May 2006	Dec 2023	Solar
SunEdison Ironwood State Prison	SunE CPA CDC2 LLC	Blythe, CA	1 GWh	Apr 2008	Dec 2023	Solar
Solar Blythe LLC	NRG Solar Blythe	Blythe, CA	41 GWh	Nov 2009	Dec 2023	Solar
McCoy Solar Energy Project Hybrid	McCoy Solar, LLC	Blythe, CA	525 GWh	Jul 2015	Dec 2023	Solar
Chuckawalla Solar	Altus Power America Management, LLC	Blythe, CA	7 GWh	May 2012	Dec 2023	Solar
Ironwood Solar LLC	Altus Power America Management, LLC	Blythe, CA	8 GWh	Mar 2012	Dec 2023	Solar
Blythe Mesa Solar II	Blythe Mesa Solar II, LLC	Blythe, CA	563 GWh	Nov 2022	Feb 2025	Solar
Arlington Energy Center II	Arlington Energy Center II	Blythe, CA	641 GWh	Feb 2022	Feb 2025	Solar
Solar Blythe 2	NRG Solar Blythe II LLC	Blythe, CA	41 GWh	Mar 2017	Dec 2023	Solar
Blythe Solar IV, LLC	Blythe Solar IV, LLC	Blythe, CA	304 GWh	Oct 2020	Feb 2025	Solar
Blythe Solar III, LLC Hybrid	Blythe Solar III, LLC	Blythe, CA	349 GWh	Apr 2020	Feb 2025	Solar
Blythe Solar 110, LLC	Blythe Solar 110, LLC	Blythe, CA	584 GWh	Feb 2016	Dec 2023	Solar
Blythe Solar II, LLC	Blythe Solar II, LLC	Blythe, CA	337 GWh	Jun 2016	Feb 2025	Solar
Arlington Energy Center III	Arlington Energy Center III	Blythe, CA	284 GWh	Jul 2022	Feb 2025	Solar
Resurgence Solar	Resurgence Solar	Boron, CA	243 GWh	Jul 2023	Feb 2025	Solar
Resurgence Solar II	Resurgence Solar II	Boron, CA	133 GWh	Jul 2023	Feb 2025	Solar
US Borax	U S Borax Inc	Boron, CA	267 GWh	Jun 1984	Feb 2025	Natural Gas
Solar Borrego I	NRG Solar Borrego I	Borrego Springs, CA	65 GWh	Jan 2013	Dec 2023	Solar
Titan Solar 1 (CA)	Titan Solar 1, LLC	Borrego Springs, CA	148 GWh	Nov 2020	Feb 2025	Solar
Ocotillo Wells	Conductive Power	Borrego Springs, CA	112 GWh	Aug 2023	Feb 2025	Solar
Copper Mountain Solar 4, LLC	Consolidated Edison Development Inc.	Boulder City, NV	214 GWh	Aug 2016	Dec 2023	Solar
Desert Star Energy Center	Desert Star Energy Center SDG&E	Boulder City, NV	762 GWh	Apr 2000	Feb 2025	Natural Gas
CM48	Consolidated Edison Development Inc.	Boulder City, NV	93 GWh	May 2010	Dec 2023	Solar
CM10	Consolidated Edison Development Inc.	Boulder City, NV	19 GWh	Nov 2008	Dec 2023	Solar
Copper Mountain Solar 2	Consolidated Edison Development Inc.	Boulder City, NV	349 GWh	Jun 2012	Dec 2023	Solar
Desert Green Solar Farm LLC	Invenergy Services LLC	Boulevard, CA	9 GWh	Oct 2014	Dec 2023	Solar
Tule Wind LLC	Avangrid Renewables LLC	Boulevard, CA	331 GWh	Nov 2017	Feb 2025	Wind
Nacimiento Hydro Project	Monterey Cnty Water Res Agency	Bradley, CA	19 GWh	Jun 1987	Nov 2023	Water
Brea Expansion Plant	Brea Power II	Brea, CA	244 GWh	Oct 2012	Feb 2025	Landfill Gas
Blacksand Generating Facility	Bridge Energy LLC	Brea, CA	45 GWh	May 2000	Dec 2023	Natural Gas
CSD 2 - Heritage High	CleanCapital Holdings	Brentwood, CA	2 GWh	Aug 2013	Dec 2023	Solar
Baker Creek Hydroelectric	Baker Station Associates, LP	Bridgeville, CA	3 GWh	Oct 2014	Dec 2023	Water
Narrows 2	Yuba County Water Agency	Browns Valley, CA	277 GWh	Nov 1969	Dec 2023	Water
Alticor Inc - Solar Project	MN8 Energy LLC	Buena Park, CA	2 GWh	Nov 2017	Dec 2023	Solar
Sierra Pacific Burney Facility	Sierra Pacific Industries	Burney, CA	94 GWh	Sep 1986	Dec 2023	Wood/Wood Waste Solids
Hat Creek 1	Pacific Gas & Electric Co.	Burney, CA	23 GWh	Jul 1921	Dec 2023	Water
Hat Creek 2	Pacific Gas & Electric Co.	Burney, CA	7 GWh	Aug 1921	Dec 2023	Water
Lost Creek I	Snow Mountain Hydro LLC	Burney, CA	5 GWh	Nov 1989	Dec 2023	Water
Cove Hydroelectric	Snow Mountain Hydro LLC	Burney, CA	14 GWh	Jan 1990	Dec 2023	Water
Burney Creek	Snow Mountain Hydro LLC	Burney, CA	6 GWh	Feb 1990	Dec 2023	Water
Pit 1	Pacific Gas & Electric Co.	Burney, CA	195 GWh	Aug 1922	Dec 2023	Water
Pit 3	Pacific Gas & Electric Co.	Burney, CA	345 GWh	Jun 1925	Dec 2023	Water
Burney Forest Products	Burney Forest Products, A Joint Venture	Burney, CA	187 GWh	Sep 1989	Dec 2023	Wood/Wood Waste Solids : 96.1% Natural Gas : 3.9%
Hatchet Ridge Wind Project	Pattern Operators LP	Burney, CA	248 GWh	Nov 2010	Dec 2023	Wind
ABEC #2 dba West-Star Dairy	ABEC #2 LLC	Buttonwillow, CA	8 GWh	Jan 2018	Dec 2023	Other Biomass Gas
Byron Highway Solar	RPCA Solar 3, LLC	Byron, CA	13 GWh	Oct 2022	Dec 2023	Solar
Mariposa Energy Project	Diamond Generating Corporation	Byron, CA	78 GWh	Sep 2012	Feb 2025	Natural Gas
Buena Vista Energy LLC	Leeward Asset Management, LLC	Byron, CA	91 GWh	Nov 2006	Dec 2023	Wind
Cabazon Wind Partners	Shell Wind Energy Inc.	Cabazon, CA	118 GWh	Sep 2002	Dec 2023	Wind
Foundation RRM	Foundation CA Fund V Manager, LLC	Cabazon, CA	10 GWh	Nov 2012	Dec 2023	Wind
Foundation NWNA	Foundation CA Fund V Manager, LLC	Cabazon, CA	23 GWh	Nov 2012	Dec 2023	Wind
Las Virgenes Municipal Water District	Tesla Inc.	Calabasas, CA	2 GWh	Jan 2014	Dec 2023	Solar
Imperial Solar Energy Center South	CSOLAR IV South LLC	Calexico, CA	277 GWh	Oct 2013	Dec 2023	Solar
Imperial Valley Solar, LLC	Imperial Valley Solar, LLC	Calexico, CA	346 GWh	Oct 2013	Dec 2023	Solar
Centinela Solar Energy	Arevon Energy, Inc.	Calexico, CA	492 GWh	Jun 2013	Dec 2023	Solar
Drew Solar LLC	Drew Solar LLC	Calexico, CA	311 GWh	Oct 2022	Feb 2025	Solar
Mount Signal Solar Farm V	Imperial Valley Solar 3, LLC	Calexico, CA	618 GWh	Oct 2018	Feb 2025	Solar
Mount Signal Solar Farm II	MN8 Energy LLC	Calexico, CA	410 GWh	Dec 2019	Feb 2025	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