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
Last Update	Jun 2026
Annual Generation	173.0 TWh
Power Plants	2,075
Utilities	965
Ranked #7 out of 64 in terms of net annual generation
Ranked #10 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 36.2% Solar \| 29.3% Water \| 12.2% Wind \| 10.8% Nuclear \| 10.8%

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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
Solano Wind	Sacramento Municipal Util Dist	Rio Vista, CA	741 GWh	May 1994	Mar 2026	Wind
Goal Line LP	Goal Line LP	Escondido, CA	9 GWh	Jul 1994	Mar 2026	Natural Gas
Elk Hills Cogen	California Resources Elk Hills LLC	Tupman, CA	53 GWh	Oct 1994	Mar 2026	Natural Gas
Bear Mountain Limited	WCAC Operating Company	Bakersfield, CA	36 GWh	Mar 1995	Mar 2026	Natural Gas
Martinez Refining	Martinez Refining Co	Martinez, CA	690 GWh	Oct 1995	Mar 2026	Natural Gas : 96.7% Other Gas : 3.3%
CCCSD Wastewater Treatment Plnt	Central Contra Costa Sanitary District	Martinez, CA	21 GWh	Nov 1995	Mar 2026	Natural Gas
Crockett Cogen Project	Crockett Cogeneration	Crockett, CA	1 TWh	Nov 1995	Feb 2026	Natural Gas
Parnassus Central Utility Plant	University of California-San Francisco	San Francisco, CA	66 GWh	Dec 1995	Mar 2026	Natural Gas
Combustion Turbine Project No 2	Northern California Power Agny	Lodi, CA	10 GWh	Mar 1996	Oct 2024	Natural Gas
Sonoma Central Landfill Phase II	County of Sonoma Dept of Trnsp	Petaluma, CA	5 GWh	May 1996	Dec 2024	Landfill Gas
Mojave Siphon	California Dept. of Water Resources	Hesperia, CA	46 GWh	Jul 1996	Dec 2024	Water
Tehachapi Wind Resource II	CalWind Resources Inc	Tehachapi, CA	46 GWh	Dec 1996	Dec 2024	Wind
MM San Diego-Miramar	MM San Diego Energy-Miramar	San Diego, CA	46 GWh	Jun 1997	Dec 2024	Landfill Gas : 91.9% Other Biomass Gas : 8.1%
Sunnyvale City of WPCP	Sunnyvale City of WPCP	Sunnyvale, CA	9 GWh	Oct 1997	Dec 2024	Natural Gas : 48.8% Other Biomass Gas : 28.3% Landfill Gas : 22.9%
Marina Landfill Gas	Monterey Regional Waste Mgmt	Marina, CA	23 GWh	Mar 1998	Dec 2024	Landfill Gas
MM Lopez Energy	MM Lopez Energy LLC	Lake View Terrace, CA	25 GWh	Nov 1998	Dec 2024	Landfill Gas
Salka Cabazon Wind	Salka Cabazon Wind LLC	North Palm Springs, CA	8 GWh	Dec 1998	Dec 2024	Wind
San Gorgonio Westwinds II LLC	Terra-Gen Operating Co-Wind	North Palm Springs, CA	124 GWh	May 1999	Dec 2024	Wind
Phoenix Wind Power LLC	Avangrid Power LLC	North Palm Springs, CA	3 GWh	May 1999	Dec 2024	Wind
Childrens Hospital	DTE San Diego COGEN Inc.	San Diego, CA	26 GWh	Mar 2000	Mar 2026	Natural Gas : 99.9%
Desert Star Energy Center	Desert Star Energy Center SDG&E	Boulder City, NV	366 GWh	Apr 2000	Mar 2026	Natural Gas
Blacksand Generating Facility	Bridge Energy LLC	Brea, CA	39 GWh	May 2000	Dec 2024	Natural Gas
Regional Wastewater Control Facility	City of Stockton MUD	Stockton, CA	3 GWh	Oct 2000	Dec 2024	Other Biomass Gas : 97.7% Natural Gas : 2.3%
Sierra Pacific Sonora	Sierra Pacific Industries	Standard, CA	35 GWh	Jan 2001	Dec 2024	Wood/Wood Waste Solids
Saint Agnes Medical Center	Saint Agnes Medical Center	Fresno, CA	32 GWh	Apr 2001	Mar 2026	Natural Gas
Chula Vista Energy Center	Wellhead Services, Inc	Chula Vista, CA	2 GWh	Apr 2001	Nov 2024	Natural Gas
Sunrise Power LLC	Sunrise Power Co LLC	Fellows, CA	2 TWh	May 2001	Feb 2026	Natural Gas
Chowchilla II	California Power Holdings LLC	Chowchilla, CA	16 GWh	May 2001	Dec 2024	Natural Gas
Mountain View I & II	AES Distributed Energy	North Palm Springs, CA	250 GWh	May 2001	Mar 2026	Wind
University of California San Diego Hybri	University of California San Diego	La Jolla, CA	210 GWh	Jun 2001	Mar 2026	Natural Gas
Indigo Energy Facility	Diamond Generating Corporation	North Palm Springs, CA	25 GWh	Jun 2001	Dec 2024	Natural Gas
Larkspur Energy Facility	Diamond Generating Corporation	San Diego, CA	24 GWh	Jun 2001	Dec 2024	Natural Gas
Los Medanos Energy Center	Los Medanos Energy Center LLC	Pittsburg, CA	3 TWh	Jul 2001	Mar 2026	Natural Gas
Drews Generating Facility	Colton Power LP	Colton, CA	1 GWh	Jul 2001	Dec 2024	Natural Gas
Red Bluff	California Power Holdings LLC	Red Bluff, CA	10 GWh	Jul 2001	Dec 2024	Natural Gas
Hanford Energy Park Peaker	MRP San Joaquin Energy LLC.	Hanford, CA	3 GWh	Aug 2001	Mar 2026	Natural Gas
Century Generating Facility	Colton Power LP	Colton, CA	952 MWh	Aug 2001	Dec 2024	Natural Gas
Watkins Manufacturing Co.	Watkins Manufacturing Corporation	San Diego, CA	8 GWh	Oct 2001	Mar 2026	Natural Gas
Border Hybrid Energy Center	CalPeak Power, LLC	San Diego, CA	15 GWh	Oct 2001	Dec 2024	Natural Gas
CalPeak Power Enterprise Peaker Plant	CalPeak Power, LLC	Escondido, CA	6 GWh	Oct 2001	Dec 2024	Natural Gas
Gilroy Peaking Energy Center	Calpine Gilroy Cogen LP	Gilroy, CA	23 GWh	Oct 2001	Dec 2024	Natural Gas
CalPeak Power Panoche Peaker Plant	CalPeak Power, LLC	Firebaugh, CA	10 GWh	Nov 2001	Dec 2024	Natural Gas
Irwindale Brew Yard, LLC	Irwindale Brew Yard, LLC	Irwindale, CA	517 MWh	Jan 2002	Apr 2025	Solar : 99.8%
King City Peaking	Calpine Corp-King City	King City, CA	12 GWh	Mar 2002	Dec 2024	Natural Gas
Delta Energy Center	Delta Energy Center LLC	Pittsburg, CA	4 TWh	Apr 2002	Mar 2026	Natural Gas
Cuyamaca Peak Energy Plant	San Diego Gas & Electric Co	El Cajon, CA	6 GWh	Apr 2002	Dec 2024	Natural Gas
SF Southeast Cogen Plant	City & County of San Francisco	San Francisco, CA	4 GWh	May 2002	Dec 2024	Other Biomass Gas
CalPeak Power Vaca Dixon Peaker Plant	CalPeak Power, LLC	Vacaville, CA	4 GWh	May 2002	Dec 2024	Natural Gas
Henrietta Peaker	MRP San Joaquin Energy LLC.	Lemoore, CA	4 GWh	May 2002	Oct 2025	Natural Gas
Springs Generating Station	City of Riverside - (CA)	Riverside, CA	825 MWh	Jun 2002	Dec 2024	Natural Gas
Yuba City Energy Center	Calpine Corp-Yuba City	Yuba City, CA	39 GWh	Jul 2002	Dec 2024	Natural Gas
San Diego State University	San Diego State University	San Diego, CA	57 GWh	Aug 2002	Mar 2026	Natural Gas : 97.3% Solar : 2.7%
Kern Oil & Refining Co	Kern Oil & Refining Co	Bakersfield, CA	35 GWh	Sep 2002	Mar 2026	Natural Gas
Valero Refinery Cogeneration Unit 1	Valero Refining Co California	Benicia, CA	237 GWh	Sep 2002	Feb 2026	Natural Gas : 85.2% Other Gas : 14.8%
Cabazon Wind Partners	Shell Wind Energy Inc.	Cabazon, CA	97 GWh	Sep 2002	Dec 2024	Wind
Whitewater Hill Wind Partners	Shell Wind Energy Inc.	North Palm Springs, CA	128 GWh	Sep 2002	Dec 2024	Wind
La Paloma Generating Plant	CXA La Paloma LLC	McKittrick, CA	1 TWh	Dec 2002	Mar 2026	Natural Gas
Creed Energy Center	Creed Energy Center LLC	Suisun, CA	6 GWh	Dec 2002	Dec 2024	Natural Gas
Lambie Energy Center	Gilroy Energy Center LLC	Suisun, CA	10 GWh	Dec 2002	Dec 2024	Natural Gas
Goose Haven Energy Center	Goose Haven Energy Center	Suisun, CA	13 GWh	Dec 2002	Dec 2024	Natural Gas
Feather River Energy Center	Calpine Corp-Yuba City	Yuba City, CA	46 GWh	Dec 2002	Dec 2024	Natural Gas
Wolfskill Energy Center	Gilroy Energy Center LLC	Fairfield, CA	7 GWh	Dec 2002	Dec 2024	Natural Gas
THUMS	THUMS Long Beach Company	Long Beach, CA	169 GWh	Dec 2002	Mar 2026	Natural Gas
MCAGCC Cogen Plant	DOD USMC Marine Air Ground Combat	Twentynine Palms, CA	69 GWh	Jan 2003	Dec 2024	Natural Gas
Los Esteros Critical Energy Center	Los Esteros Critical Energy Facility LLC	San Jose, CA	144 GWh	Jan 2003	Mar 2026	Natural Gas
High Desert Power Plant	MRP Generation Holdings, LLC	Victorville, CA	3 TWh	Mar 2003	Mar 2026	Natural Gas
Tracy Combined Cycle Power Plant	MRP San Joaquin Energy LLC.	Tracy, CA	766 GWh	Mar 2003	Mar 2026	Natural Gas
Riverview Energy Center	Gilroy Energy Center for Riverview	Antioch, CA	22 GWh	Apr 2003	Dec 2024	Natural Gas
Agua Mansa Power Plant	E I Colton LLC	Colton, CA	9 GWh	May 2003	Dec 2024	Natural Gas
Elk Hills Power LLC	Elk Hills Power LLC	Tupman, CA	3 TWh	Jun 2003	Mar 2026	Natural Gas
High Winds LLC	FPLE High Winds, LLC	Birds Landing, CA	233 GWh	Jun 2003	Dec 2024	Wind
California Institute of Technology	California Institute-Technology	Pasadena, CA	56 GWh	Jul 2003	Mar 2026	Natural Gas
Naval Hospital Medical Center	Department of the Navy	San Diego, CA	23 GWh	Nov 2003	Jan 2026	Natural Gas
One Market Plaza	Paramount Group Inc	San Francisco, CA	177 MWh	Nov 2003	Dec 2024	Natural Gas
Mountain View III	Avangrid Power LLC	North Palm Springs, CA	76 GWh	Nov 2003	Dec 2024	Wind
Blythe Energy Inc	AltaGas Blythe Operations Inc	Blythe, CA	336 GWh	Nov 2003	Mar 2026	Natural Gas
Sierra Pacific Lincoln Facility	Sierra Pacific Industries	Lincoln, CA	94 GWh	Feb 2004	Dec 2024	Wood/Wood Waste Solids
Sycamore Energy LLC	Sycamore Energy LLC	Santee, CA	23 GWh	Mar 2004	Dec 2024	Landfill Gas
Signal Hill West Unit	Signal Hill Petroleum, Inc	Signal Hill, CA	39 GWh	Jun 2004	Mar 2026	Other Gas
Lincoln Landfill	Energy 2001 Inc	Lincoln, CA	29 GWh	Oct 2004	Dec 2024	Landfill Gas
Diablo Winds LLC	Sequitur Renewables, LLC	Livermore, CA	20 GWh	Nov 2004	Dec 2024	Wind
Oasis Wind	Terra-Gen Operating Co-Wind	Mojave, CA	238 GWh	Nov 2004	Dec 2024	Wind
Bear Valley Power Plant	Bear Valley Electric Service	Big Bear Lake, CA	307 MWh	Dec 2004	Dec 2024	Natural Gas
Coram Energy LLC	Nextera Energy Resources	Tehachapi, CA	10 GWh	Dec 2004	Dec 2024	Wind
Donald Von Raesfeld Power Plant	City of Santa Clara - (CA)	Santa Clara, CA	814 GWh	Feb 2005	Mar 2026	Natural Gas
Clearwater Power Plant	City of Riverside - (CA)	Corona, CA	10 GWh	Feb 2005	Dec 2024	Natural Gas
Pastoria Energy Facility, LLC	Calpine Corp - Pastoria Energy Center	Lebec, CA	4 TWh	Apr 2005	Mar 2026	Natural Gas
Coram Energy LLC (ECT)	Nextera Energy Resources	Tehachapi, CA	18 GWh	Apr 2005	Dec 2024	Wind
Sierra Nevada Brewing Co Hybrid	Sierra Nevada Brewing Co	Chico, CA	10 GWh	Apr 2005	Dec 2024	Natural Gas : 76.8% Solar : 21.6% Other Biomass Gas : 1.6%
Miramar Energy Facility	San Diego Gas & Electric Co	San Diego, CA	7 GWh	May 2005	Mar 2026	Natural Gas
Metcalf Energy Center	Calpine Corp - Metcalf Energy Center	San Jose, CA	2 TWh	May 2005	Mar 2026	Natural Gas
W Plant	Qualcomm Incorporated	San Diego, CA	23 GWh	Jun 2005	Mar 2026	Natural Gas
Malaga Power LLC	CalPeak Power, LLC	Fresno, CA	7 GWh	Aug 2005	Mar 2026	Natural Gas
Malburg	City of Vernon	Vernon, CA	302 GWh	Sep 2005	Mar 2026	Natural Gas
Palomar Energy	San Diego Gas & Electric Co	Escondido, CA	1 TWh	Sep 2005	Feb 2026	Natural Gas
Kumeyaay Wind	Leeward Asset Management, LLC	Campo, CA	127 GWh	Nov 2005	Dec 2024	Wind
Mountainview Generating Station	Southern California Edison Co	Redlands, CA	1 TWh	Nov 2005	Mar 2026	Natural Gas
Ameresco Santa Cruz Energy	AMERESCO Santa Cruz Energy LLC	Watsonville, CA	16 GWh	Dec 2005	Dec 2024	Landfill Gas
Shiloh I Wind Project	Avangrid Power LLC	Rio Vista, CA	390 GWh	Apr 2006	Dec 2024	Wind
Riverside Energy Resource Center	City of Riverside - (CA)	Riverside, CA	72 GWh	May 2006	Dec 2024	Natural Gas

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#26	Arizona Public Service Company	24.8 TWh	92
#54	Arlington Valley, LLC	3.2 TWh	1
#37	Balancing Authority of Northern California	13.7 TWh	87
#49	Imperial Irrigation District	6.2 TWh	66
#29	Los Angeles Department of Water and Power	18.6 TWh	124
#22	Nevada Power Company	36.3 TWh	139
#19	Salt River Project Agricultural Improvement and Power District	60.1 TWh	48
#38	Tucson Electric Power	13.7 TWh	53
#57	Turlock Irrigation District	1.9 TWh	11
#39	Western Area Power Administration - Desert Southwest Region	10.3 TWh	33

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#3	Electric Reliability Council of Texas, Inc.	489.5 TWh	1,313
#5	Southwest Power Pool	304.8 TWh	835
#6	Southern Company Services, Inc. - Trans	252.5 TWh	417
#7	California Independent System Operator	173.0 TWh	2,075
#9	Tennessee Valley Authority	163.7 TWh	204
#10	Florida Power & Light Co.	151.0 TWh	187
#12	New York Independent System Operator	134.9 TWh	1,211
#13	Duke Energy Carolinas	112.2 TWh	565
#15	ISO New England	111.3 TWh	1,577
#16	Bonneville Power Administration	90.2 TWh	163