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
A G Wishon	Pacific Gas & Electric Co.	North Fork, CA	24 GWh	Aug 1910	Oct 2025	Water
ABEC #2 dba West-Star Dairy	ABEC #2 LLC	Buttonwillow, CA	8 GWh	Jan 2018	Dec 2025	Other Biomass Gas
ABEC #3 dba Lakeview Dairy	ABEC #3 LLC	Bakersfield, CA	5 GWh	Jan 2018	Dec 2025	Other Biomass Gas
ABEC #4 dba CE&S Dairy	ABEC #4 LLC	Bakersfield, CA	7 GWh	Jan 2018	Dec 2025	Other Biomass Gas
ABEC Bidart-Old River LLC	ABEC Bidart-Old River LLC	Bakersfield, CA	16 GWh	Nov 2013	Dec 2025	Other Biomass Gas
Abel Road Bioenergy	ACC Renewable Resources	Williams, CA	23 GWh	Jun 2022	Dec 2025	Agricultural By-Products
Adelanto Solar II, LLC	Adelanto Solar II, LLC	Adelanto, CA	18 GWh	Jun 2015	Dec 2025	Solar
Adelanto Solar, LLC	Adelanto Solar, LLC	Adelanto, CA	59 GWh	Aug 2015	Dec 2025	Solar
Adera Solar	AES Distributed Energy	Chowchilla, CA	33 GWh	Nov 2015	Dec 2025	Solar
Adobe Solar	Southern Power Co	Arvin, CA	36 GWh	Apr 2014	Dec 2025	Solar
Aera San Ardo Cogen Facility	Aera Energy LLC-San Ardo	San Ardo, CA	20 GWh	Jun 1989	Dec 2025	Natural Gas
AES Alamitos Energy Center	AES Alamitos Energy, LLC	Long Beach, CA	1 TWh	Jan 2020	May 2026	Natural Gas
AES Alamitos LLC	AES Alamitos LLC	Long Beach, CA	28 GWh	Aug 1956	Oct 2025	Natural Gas
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
Agnews Power Plant	OLS Energy-Agnews Inc.	San Jose, CA	9 GWh	Oct 1990	Dec 2025	Natural Gas
Agriculture Capital - Legacy Packing	Distributed Solar Development, LLC	Dinuba, CA	4 GWh	Nov 2022	Dec 2025	Solar
AGT000 Stevens Creek Fuel Cell	2016 ESA Project Company, LLC	Santa Clara, CA	17 GWh	Aug 2018	Dec 2025	Natural Gas
Agua Caliente Solar Project	Agua Caliente Solar	Dateland, AZ	525 GWh	Apr 2012	May 2026	Solar
Agua Mansa Power Plant	E I Colton LLC	Colton, CA	4 GWh	May 2003	Dec 2025	Natural Gas
Aidlin Geothermal Power Plant	Geysers Power Co LLC	Middletown, CA	82 GWh	Apr 1989	Dec 2025	Geothermal
Alameda	Northern California Power Agny	Alameda, CA	3 GWh	Apr 1986	Dec 2025	Natural Gas
Alamo	California Dept. of Water Resources	Pearblossom, CA	66 GWh	Jun 1986	Dec 2025	Water
Alamo Solar	Onward Energy	Oro Grande, CA	49 GWh	Apr 2015	Dec 2025	Solar
Algonquin Power Sanger LLC	Clearlight Energy Sanger LLC	Sanger, CA	4 GWh	Nov 2007	May 2026	Natural Gas
Algonquin SKIC 10 Solar, LLC	Algonquin Power Co	Taft, CA	16 GWh	Dec 2016	Dec 2025	Solar
Algonquin SKIC20 Solar LLC	Algonquin Power Co	Taft, CA	41 GWh	Apr 2015	Dec 2025	Solar
Allied Potato	Renewable Solar, Inc	Bakersfield, CA	310 MWh	Apr 2025	Dec 2025	Solar
Almond	Westlands Almond LLC	Lemoore, CA	49 GWh	Aug 2023	Dec 2025	Solar
Alpaugh 50	RWE Clean Energy	Alpaugh, CA	57 GWh	Nov 2012	Dec 2025	Solar
Alpaugh North	RWE Clean Energy	Alpaugh, CA	21 GWh	Nov 2012	Dec 2025	Solar
Alpine Solar	Alpine BESS LLC	Lancaster, CA	114 GWh	Jan 2013	Dec 2025	Solar
Alta Powerhouse	Pacific Gas & Electric Co.	Alta, CA	2 GWh	Oct 1902	Dec 2025	Water
Alta Wind Energy Center I	Alta Wind I, LLC	Mojave, CA	400 GWh	Dec 2010	Dec 2025	Wind
Alta Wind Energy Center II	Alta Wind II, LLC	Mojave, CA	318 GWh	Dec 2010	Dec 2025	Wind
Alta Wind Energy Center III	Alta Wind III, LLC	Mojave, CA	318 GWh	Jan 2011	Dec 2025	Wind
Alta Wind Energy Center IV	Alta Wind IV, LLC	Mojave, CA	168 GWh	Mar 2011	Dec 2025	Wind
Alta Wind Energy Center V	Alta Wind V, LLC	Mojave, CA	254 GWh	Mar 2011	Dec 2025	Wind
Alta Wind VIII	Nextera Energy Resources	Mojave, CA	219 GWh	Dec 2011	Dec 2025	Wind
Alta Wind X	Alta Wind X, LLC	Mojave, CA	361 GWh	Dec 2013	Dec 2025	Wind
Alta Wind XI	Alta Wind XI, LLC	Mojave, CA	251 GWh	Dec 2013	Dec 2025	Wind
AltaGas Ripon Energy Inc.	AltaGas Ripon Energy Inc.	Ripon, CA	1 GWh	Mar 1988	Apr 2026	Natural Gas
Altamont Gas Recovery	WM Renewable Energy LLC	Livermore, CA	39 GWh	Feb 1969	Dec 2025	Landfill Gas
Alticor Inc - Solar Project	MN8 Energy LLC	Buena Park, CA	1 GWh	Nov 2017	Dec 2025	Solar
AM Wind Repower	AM Wind Repower LLC	Whitewater, CA	76 GWh	Feb 2025	May 2026	Wind
Amazon Bakersfield 1 Solar Project	Solar Star Prime 3, LLC	Bakersfield, CA	8 GWh	Dec 2023	Dec 2025	Solar
Amazon PSP1	Greenbacker Renewable Energy Corporation	Beaumont, CA	7 GWh	Sep 2021	Dec 2024	Solar
Amazon SAN3 Solar Project	Solar Star Prime 4 LLC	San Diego, CA	6 GWh	Apr 2024	Dec 2024	Solar
Amazon - SAN5	Onyx Asset Services Group	San Diego, CA	530 MWh	Oct 2025	Dec 2025	Solar
Amazon - Stockton - Roof (SCK1) - (CA)	Forefront Power, LLC	Stockton, CA	4 GWh	Feb 2023	Dec 2024	Solar
Amazon Visalia (FAT2)	Madison Energy Investments LLC	Visalia, CA	4 GWh	Feb 2023	Dec 2025	Solar
Ameresco Butte County	Ameresco Butte County LLC	Paradise, CA	15 GWh	Jan 2013	Dec 2025	Landfill Gas
Ameresco Chiquita Canyon	AMERESCO Chiquita Canyon LLC	Castaic, CA	2 GWh	Oct 2010	Dec 2024	Landfill Gas
Ameresco Forward	Ameresco Forward, LLC	Manteca, CA	32 GWh	Jan 2014	Dec 2025	Landfill Gas
Ameresco Johnson Canyon	Ameresco Johnson Canyon LLC	Gonzales, CA	10 GWh	Apr 2013	Dec 2025	Landfill Gas
Ameresco Keller Canyon	AMERESCO Keller Canyon LLC	Bay Point, CA	16 GWh	Jun 2009	Dec 2025	Landfill Gas
Ameresco Ox Mountain	AMERESCO Ox Mountain Energy LLC	Half Moon Bay, CA	81 GWh	Nov 2008	May 2026	Landfill Gas
Ameresco San Joaquin	Ameresco San Joaquin, LLC	Linden, CA	25 GWh	Mar 2014	Dec 2025	Landfill Gas
Ameresco Santa Cruz Energy	AMERESCO Santa Cruz Energy LLC	Watsonville, CA	14 GWh	Dec 2005	Dec 2025	Landfill Gas
Ameresco Vasco Road	Ameresco Vasco Road, LLC	Livermore, CA	33 GWh	Feb 2013	Dec 2025	Landfill Gas
American Canyon Solar	RP Napa Solar 1, LLC	American Canyon, CA	6 GWh	Aug 2019	Dec 2025	Solar
American Kings Solar, LLC	MN8 Energy LLC	Lemoore, CA	288 GWh	Nov 2020	May 2026	Solar
Anaheim Solar Energy Plant	Anaheim Public Utilities	Anaheim, CA	2 GWh	Jul 2014	Dec 2025	Solar
Angela Solar Project	Angiola East LLC	Alpaugh, CA	11 GWh	-	May 2026	Solar
Angels	Utica Water & Power Authority	Angels Camp, CA	6 GWh	Dec 1939	Dec 2025	Water
Anheuser-Busch #2	Foundation HA Energy Generation, LLC	Fairfield, CA	4 GWh	Oct 2014	May 2026	Wind
Anheuser Busch - Fairfield	Bloom Energy	Fairfield, CA	21 GWh	Nov 2022	Dec 2025	Natural Gas
Antelope Big Sky Ranch	AES Distributed Energy	Lancaster, CA	50 GWh	Jul 2016	Dec 2025	Solar
Antelope DSR 1	AES Distributed Energy	Lancaster, CA	119 GWh	Nov 2016	May 2026	Solar
Antelope DSR 2	AES Distributed Energy	Lancaster, CA	14 GWh	Nov 2016	Dec 2025	Solar
Antelope DSR 3	AES Distributed Energy	Lancaster, CA	55 GWh	Aug 2019	Dec 2025	Solar
Antelope Expansion 1B	AES Distributed Energy	Lancaster, CA	47 GWh	Oct 2022	Dec 2025	Solar
Antelope Expansion 2	AES Distributed Energy	Lancaster, CA	234 GWh	Nov 2018	May 2026	Solar
Antelope Expansion 3A	AES Distributed Energy	Lancaster, CA	40 GWh	May 2021	Dec 2025	Solar
Antelope Expansion 3B	AES Distributed Energy	Lancaster, CA	13 GWh	May 2021	Dec 2025	Solar
AP North Lake I, LP	AP North Lake I, LP	Hemet, CA	46 GWh	Jul 2015	Dec 2025	Solar
Apple Campus 2 Fuel Cell	Apple, Inc	Cupertino, CA	31 GWh	May 2017	Dec 2025	Landfill Gas
Apple Campus 2 PV	Apple, Inc	Cupertino, CA	16 GWh	May 2017	Dec 2025	Solar
Aquamarine	Aqua	Lemoore, CA	650 GWh	Aug 2021	May 2026	Solar
Argus Cogen Plant	Searles Valley Minerals Operations Inc.	Trona, CA	187 GWh	Nov 1947	May 2026	Bituminous Coal : 82.0% Natural Gas : 18.0%
Arica Solar	Arica Solar, LLC	Desert Center, CA	740 GWh	Feb 2024	May 2026	Solar
Arlington Energy Center II	Arlington Energy Center II	Blythe, CA	641 GWh	Feb 2022	May 2026	Solar
Arlington Energy Center III	Arlington Energy Center III	Blythe, CA	334 GWh	Jul 2022	May 2026	Solar
Arrache 4006	CD US Solar MT 2 LLC	Palmdale, CA	2 GWh	Jul 2013	Dec 2025	Solar
Arrache 4013	CD US Solar MT 2 LLC	Palmdale, CA	4 GWh	Jul 2013	Dec 2025	Solar
Arrache 8083	CD US Solar MT 2 LLC	Palmdale, CA	3 GWh	Aug 2013	Dec 2025	Solar
Aspiration G	AES Distributed Energy	Cantua Creek, CA	21 GWh	Aug 2017	Dec 2025	Solar
ASTI	SunStrong Management, LLC	Cloverdale, CA	1 GWh	Jan 2009	Dec 2025	Solar
AT&T Anaheim	Bloom Energy	Anaheim, CA	7 GWh	Aug 2016	Dec 2025	Natural Gas
AT&T - Gardena	Bloom Energy	Gardena, CA	8 GWh	May 2013	Dec 2025	Natural Gas
AT&T - Hawthorne	Bloom Energy	Hawthorne, CA	8 GWh	Sep 2016	Dec 2025	Natural Gas
AT&T - Hayward	Bloom Energy	Hayward, CA	8 GWh	Oct 2016	Dec 2025	Natural Gas
AT&T Holger	Bloom Energy	San Jose, CA	1 GWh	May 2016	Dec 2025	Natural Gas
AT&T - Redwood City	Bloom Energy	Redwood City, CA	3 GWh	Feb 2013	Dec 2025	Natural Gas
AT&T - San Diego Trade Street	Bloom Energy	San Diego, CA	4 GWh	Feb 2016	Dec 2025	Natural Gas
Atascadero State Hospital	Ecoplexus, Inc	Atascadero, CA	3 GWh	Jul 2020	Dec 2025	Solar
Athos Solar Project	SE Athos I, LLC	Desert Center, CA	703 GWh	May 2022	May 2026	Solar
ATT Kelvin	Bloom Energy	Irvine, CA	8 GWh	Mar 2017	Dec 2025	Natural Gas
ATT North Watney	Bloom Energy	Fairfield, CA	8 GWh	Nov 2019	Dec 2025	Natural Gas
Atwell Island	SPS Atwell Island LLC	Alpaugh, CA	34 GWh	Feb 2013	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