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	Oct 2026
Annual Generation	167.6 TWh
Power Plants	2,170
Utilities	1,001
Ranked #7 out of 64 in terms of net annual generation
Ranked #14 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 31.8% Solar \| 31% Water \| 12.2% Wind \| 11.9% Nuclear \| 11.2% Coal \| 0%

Map of California Independent System Operator

Register Now for Comprehensive Access

Subscribe now to access all power plant data, utility information, FERC EQR data, and more for California Independent System Operator.

Create Your Account Today

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

Download Generation

Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
Richmond Cogen	Chevron Products Company-Richmond	Richmond, CA	957 GWh	Jul 1992	Jul 2026	Natural Gas : 97.6% Other Gas : 2.4%
J S Eastwood	Southern California Edison Co	Shaver Lake, CA	100 GWh	Nov 1987	Jul 2026	Water
Coso Power Developers	Coso Operating Co LLC	Inyokern, CA	316 GWh	Oct 1989	Jul 2026	Geothermal
El Segundo Cogen	Chevron USA Inc-El Segundo	El Segundo, CA	1 TWh	Nov 1987	Jul 2026	Natural Gas : 99.8%
Saint Agnes Medical Center	Saint Agnes Medical Center	Fresno, CA	32 GWh	Apr 2001	Jul 2026	Natural Gas
Taft 26C Cogen	Chevron USA Inc	Taft, CA	46 GWh	Jun 1982	Jul 2026	Natural Gas
Gas Utilization Facility	City of San Diego - (CA)	San Diego, CA	27 GWh	May 1985	Jul 2026	Other Biomass Gas
Belden	Pacific Gas & Electric Co.	Belden, CA	430 GWh	Aug 1969	Jul 2026	Water
US Borax	U S Borax Inc	Boron, CA	263 GWh	Jun 1984	Jul 2026	Natural Gas
Encina Water Pollution Control	Encina Joint Powers Authority	Carlsbad, CA	14 GWh	Oct 2008	Jul 2026	Other Biomass Gas : 94.0% Natural Gas : 6.0%
Sunrise Power LLC	Sunrise Power Co LLC	Fellows, CA	2 TWh	May 2001	Jul 2026	Natural Gas
Caribou 2	Pacific Gas & Electric Co.	Belden, CA	491 GWh	Oct 1958	Jul 2026	Water
Goal Line LP	Goal Line LP	Escondido, CA	13 GWh	Jul 1994	Jul 2026	Natural Gas
Wheelabrator Shasta	Shasta Sustainable Resource Management, Inc.	Anderson, CA	290 GWh	Sep 1987	Jul 2026	Wood/Wood Waste Solids
Badger Creek Limited	WCAC Operating Company	Bakersfield, CA	4 GWh	Mar 1991	Jul 2026	Natural Gas
Lockhart Solar PV, LLC	Terra-Gen Operating Co-Solar	Hinkley, CA	236 GWh	Nov 1989	Jul 2026	Solar
Solano Wind	Sacramento Municipal Util Dist	Rio Vista, CA	708 GWh	May 1994	Jul 2026	Wind
San Diego State University	San Diego State University	San Diego, CA	59 GWh	Aug 2002	Jul 2026	Natural Gas : 97.5% Solar : 2.5%
Coso Finance Partners	Coso Operating Co LLC	Inyokern, CA	357 GWh	Jun 1987	Jul 2026	Geothermal
Blythe Energy Inc	AltaGas Blythe Operations Inc	Blythe, CA	407 GWh	Nov 2003	Jul 2026	Natural Gas
CP Kelco San Diego Plant	CP Kelco US Inc.	San Diego, CA	75 GWh	Sep 1983	Jul 2026	Natural Gas
Electra	Pacific Gas & Electric Co.	Jackson, CA	257 GWh	May 1948	Jul 2026	Water
Haas	Pacific Gas & Electric Co.	Balch Camp, CA	174 GWh	Nov 1958	Jul 2026	Water
Pastoria Energy Facility, LLC	Calpine Corp - Pastoria Energy Center	Lebec, CA	3 TWh	Apr 2005	Jul 2026	Natural Gas
Desert Star Energy Center	Desert Star Energy Center SDG&E	Boulder City, NV	412 GWh	Apr 2000	Jul 2026	Natural Gas
Live Oak Limited	WCAC Operating Company	Bakersfield, CA	18 GWh	Feb 1992	Jul 2026	Natural Gas
Humboldt Bay	Pacific Gas & Electric Co.	Eureka, CA	312 GWh	Aug 2010	Jul 2026	Natural Gas : 99.4% Distillate Fuel Oil : 0.6%
James B Black	Pacific Gas & Electric Co.	Big Bend, CA	504 GWh	Nov 1965	Jul 2026	Water
Dixie Valley	Ormat Nevada Inc	Fallon, NV	469 GWh	May 1988	Jul 2026	Geothermal
Los Medanos Energy Center	Los Medanos Energy Center LLC	Pittsburg, CA	3 TWh	Jul 2001	Jul 2026	Natural Gas
Dynegy Moss Landing Power Plant Hybrid	Dynegy -Moss Landing LLC	Moss Landing, CA	2 TWh	Nov 1967	Jul 2026	Natural Gas
Loma Linda University Cogen	Loma Linda University	Loma Linda, CA	61 GWh	Jan 1980	Jul 2026	Natural Gas
Geothermal 2	Northern California Power Agny	Middletown, CA	324 GWh	Nov 1985	Jul 2026	Geothermal
San Jose Cogeneration	San Jose State University Fclts Dev &Ops	San Jose, CA	35 GWh	Nov 1984	Jul 2026	Natural Gas
New-Indy Ontario Mill	New-Indy Ontario LLC	Ontario, CA	244 GWh	May 1985	Jul 2026	Natural Gas
Kaweah Delta District Hospital	Kaweah Delta Hospital	Visalia, CA	22 GWh	Sep 2008	Jul 2026	Natural Gas
Pit 4	Pacific Gas & Electric Co.	Big Bend, CA	342 GWh	Jun 1955	Jul 2026	Water
Pit 5	Pacific Gas & Electric Co.	Big Bend, CA	211 GWh	Mar 1944	Jul 2026	Water
AltaGas Ripon Energy Inc.	AltaGas Ripon Energy Inc.	Ripon, CA	2 GWh	Mar 1988	Jul 2026	Natural Gas
Pit 7	Pacific Gas & Electric Co.	Montgomery Creek, CA	366 GWh	Aug 1965	Jul 2026	Water
Poe	Pacific Gas & Electric Co.	Storrie, CA	197 GWh	Sep 1958	Jul 2026	Water
Rock Creek	Pacific Gas & Electric Co.	Storrie, CA	438 GWh	Feb 1950	Jul 2026	Water
Berry Cogen Tanne Hills 18	Berry Petroleum Co	Maricopa, CA	138 GWh	Nov 1986	Jul 2026	Natural Gas
Pacific-Ultrapower Chinese Station	IHI Power Services Corp	Jamestown, CA	101 GWh	Sep 1986	Jul 2026	Wood/Wood Waste Solids : 98.0% Gaseous Propane : 2.0%
Oxnard Wastewater Treatment Plant	City of Oxnard - (CA)	Oxnard, CA	3 GWh	Jul 1981	Jul 2026	Other Biomass Gas : 99.9%
Diablo Canyon	Pacific Gas & Electric Co.	Avila Beach, CA	18 TWh	Apr 1985	Jul 2026	Nuclear
Humboldt Sawmill Company	Mendocino Forest Products	Scotia, CA	119 GWh	Dec 1937	Jul 2026	Wood/Wood Waste Solids : 99.8%
Naval Hospital Medical Center	Department of the Navy	San Diego, CA	14 GWh	Nov 2003	Jul 2026	Natural Gas
Kern River Eastridge Cogen	Chevron USA Inc	Bakersfield, CA	211 GWh	May 1988	Jul 2026	Natural Gas
Geysers Unit 5-20	Geysers Power Co LLC	Middletown, CA	4 TWh	Mar 1971	Jul 2026	Geothermal
Biola University Hybrid	Biola University	La Mirada, CA	13 GWh	Mar 1990	Jul 2026	Natural Gas
Midway Sunset Cogen	Midway-Sunset Cogeneration Co	Fellows, CA	8 GWh	Apr 1989	Jul 2026	Natural Gas
Berry Placerita Cogen	Shadow Wolf Energy	Santa Clarita, CA	4 GWh	Feb 1990	Jul 2026	Natural Gas
Salinas River Cogeneration	Salinas River Cogeneration Co	San Ardo, CA	256 GWh	Oct 1991	Jul 2026	Natural Gas
Argus Cogen Plant	Searles Valley Minerals Operations Inc.	Trona, CA	154 GWh	Nov 1947	Jul 2026	Bituminous Coal : 71.3% Natural Gas : 28.7%
Collierville Powerhouse	Northern California Power Agny	Murphys, CA	407 GWh	Oct 1989	Jul 2026	Water
La Paloma Generating Plant	CXA La Paloma LLC	McKittrick, CA	1 TWh	Dec 2002	Jul 2026	Natural Gas
Big Creek 3	Southern California Edison Co	Auberry, CA	760 GWh	Aug 1923	Jul 2026	Water
Big Creek 4	Southern California Edison Co	North Fork, CA	404 GWh	May 1951	Jul 2026	Water
Martinez Refining	Martinez Refining Co	Martinez, CA	662 GWh	Oct 1995	Jul 2026	Natural Gas : 96.3% Other Gas : 3.7%
Big Creek 2A	Southern California Edison Co	Auberry, CA	325 GWh	Jul 1928	Jul 2026	Water
Western Power & Steam Inc	Western Power and Steam II LLC	Bakersfield, CA	21 GWh	Feb 1990	Jul 2026	Natural Gas
Pine Flat	Kings River Conservation Dist	Piedra, CA	333 GWh	Dec 1983	Jul 2026	Water
Geothermal 1	Northern California Power Agny	Middletown, CA	307 GWh	Dec 1982	Jul 2026	Geothermal
King City Power Plant	Calpine King City Cogen LLC	King City, CA	28 GWh	Jan 1989	Jul 2026	Natural Gas
California Institute of Technology	California Institute-Technology	Pasadena, CA	74 GWh	Jul 2003	Jul 2026	Natural Gas
Kerckhoff 2	Pacific Gas & Electric Co.	Auberry, CA	450 GWh	Apr 1983	Jul 2026	Water
Otay Mesa Generating Project	Otay Mesa Energy Center LLC	San Diego, CA	1 TWh	Sep 2009	Jul 2026	Natural Gas
Childrens Hospital	DTE San Diego COGEN Inc.	San Diego, CA	26 GWh	Mar 2000	Jul 2026	Natural Gas
Pebbly Beach Generating Station Hybrid	Southern California Edison Co	Avalon, CA	28 GWh	Jun 1958	Jul 2026	Distillate Fuel Oil : 95.4% Gaseous Propane : 4.6%
Metcalf Energy Center	Calpine Corp - Metcalf Energy Center	San Jose, CA	2 TWh	May 2005	Jul 2026	Natural Gas
Kern River Cogeneration	Kern River Cogeneration Co	Bakersfield, CA	105 GWh	Jun 1985	Jul 2026	Natural Gas
Mammoth Pool	Southern California Edison Co	North Fork, CA	574 GWh	Feb 1960	Jul 2026	Water
Ormond Beach	Ormond Beach Power, LLC	Oxnard, CA	18 GWh	Jul 1971	Jul 2026	Natural Gas
Bear Mountain Limited	WCAC Operating Company	Bakersfield, CA	38 GWh	Mar 1995	Jul 2026	Natural Gas
Puente Hills Energy Recovery	Los Angeles County Sanitation	Whittier, CA	145 GWh	Sep 1986	Jul 2026	Landfill Gas
Marathon Bay Area Cogen	Tesoro Marketing & Refining Co. LLC (Martinez)	Martinez, CA	598 GWh	Jan 1987	Jul 2026	Natural Gas
Mountainview Generating Station	Southern California Edison Co	Redlands, CA	1 TWh	Nov 2005	Jul 2026	Natural Gas
High Desert Power Plant	MRP Generation Holdings, LLC	Victorville, CA	3 TWh	Mar 2003	Jul 2026	Natural Gas
Dion R Holm	City & County of San Francisco - (CA)	Groveland, CA	552 GWh	Jul 1960	Jul 2026	Water
Moccasin	City & County of San Francisco - (CA)	Moccasin, CA	305 GWh	Jul 1969	Jul 2026	Water
R C Kirkwood	City & County of San Francisco - (CA)	Groveland, CA	478 GWh	Jan 1967	Jul 2026	Water
Calistoga Power Plant	Geysers Power Co LLC	Middletown, CA	454 GWh	Feb 1984	Jul 2026	Geothermal
Municipal Cogen Plant	Palm Springs, City of - (CA)	Palm Springs, CA	8 GWh	Apr 1985	Jul 2026	Natural Gas
Elk Hills Power LLC	Elk Hills Power LLC	Tupman, CA	3 TWh	Jun 2003	Jul 2026	Natural Gas
E F Oxnard Energy Facility	EF Oxnard, LLC	Oxnard, CA	8 GWh	May 1990	Jul 2026	Natural Gas
Painted Hills Wind Park	Terra-Gen Operating Co-Wind	Whitewater, CA	161 GWh	Oct 1985	Jul 2026	Wind
Oxnard	Procter&Gamble Paper Products Co-Oxnard	Oxnard, CA	422 GWh	Jun 1982	Jul 2026	Natural Gas
Watson Cogeneration	ARCO Products Co-Watson	Carson, CA	2 TWh	Nov 1987	Jul 2026	Natural Gas : 77.0% Other Gas : 22.7%
SRI International Cogen Project	IPT SRI Cogeneration Inc	Menlo Park, CA	24 GWh	Mar 1987	Jul 2026	Natural Gas
Torrance Refining Company, LLC	Torrance Refining Company, LLC	Torrance, CA	68 GWh	Aug 1983	Jul 2026	Other Gas : 56.6% Waste Heat : 43.4%
McKittrick Limited	WCAC Operating Company	Bakersfield, CA	5 GWh	Sep 1991	Jul 2026	Natural Gas
Mesa Wind Power LLC	Mesa Wind Power LLC	North Palm Springs, CA	117 GWh	Oct 1984	Jul 2026	Wind
Delta Energy Center	Delta Energy Center LLC	Pittsburg, CA	3 TWh	Apr 2002	Jul 2026	Natural Gas
Middle Fork	Placer County Water Agency - (CA)	Foresthill, CA	459 GWh	Sep 1966	Jul 2026	Water
South Belridge Cogeneration Facility	AERA Energy LLC	McKittrick, CA	475 GWh	Nov 1985	Jul 2026	Natural Gas
Southeast Kern River Cogen	Chevron USA Inc	Bakersfield, CA	43 GWh	Jan 1989	Jul 2026	Natural Gas
Thermalito	California Dept. of Water Resources	Oroville, CA	309 GWh	Jan 1968	Jul 2026	Water
Devil Canyon	California Dept. of Water Resources	San Bernardino, CA	736 GWh	Nov 1972	Jul 2026	Water
Edward C Hyatt	California Dept. of Water Resources	Oroville, CA	2 TWh	Feb 1968	Jul 2026	Water

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#25	Arizona Public Service Company	25.7 TWh	102
#54	Arlington Valley, LLC	3.2 TWh	1
#38	Balancing Authority of Northern California	13.7 TWh	91
#49	Imperial Irrigation District	6.2 TWh	66
#29	Los Angeles Department of Water and Power	19.2 TWh	132
#22	Nevada Power Company	38.4 TWh	143
#51	PUD No. 1 of Douglas County	4.4 TWh	5
#19	Salt River Project Agricultural Improvement and Power District	60.3 TWh	51
#57	Turlock Irrigation District	1.9 TWh	11
#39	Western Area Power Administration - Desert Southwest Region	10.5 TWh	36

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#3	Electric Reliability Council of Texas, Inc.	506.6 TWh	1,487
#5	Southwest Power Pool	314.8 TWh	876
#6	Southern Company Services, Inc. - Trans	258.9 TWh	423
#7	California Independent System Operator	167.6 TWh	2,170
#9	Tennessee Valley Authority	166.3 TWh	209
#10	Florida Power & Light Co.	152.8 TWh	188
#12	New York Independent System Operator	134.2 TWh	1,334
#13	Duke Energy Carolinas	113.6 TWh	578
#15	ISO New England	112.3 TWh	1,667
#16	Bonneville Power Administration	91.2 TWh	170