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	168.7 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 \| 32% Solar \| 30.9% Water \| 12.2% Wind \| 11.8% Nuclear \| 11.2% Coal \| 0%

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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
Gas Utilization Facility	City of San Diego - (CA)	San Diego, CA	27 GWh	May 1985	Jul 2026	Other Biomass Gas
Painted Hills Wind Park	Terra-Gen Operating Co-Wind	Whitewater, CA	161 GWh	Oct 1985	Jul 2026	Wind
Mesa Wind Power LLC	Mesa Wind Power LLC	North Palm Springs, CA	117 GWh	Oct 1984	Jul 2026	Wind
SRI International Cogen Project	IPT SRI Cogeneration Inc	Menlo Park, CA	24 GWh	Mar 1987	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%
McKittrick Limited	WCAC Operating Company	Bakersfield, CA	5 GWh	Sep 1991	Jul 2026	Natural Gas
Berry Cogen Tanne Hills 18	Berry Petroleum Co	Maricopa, CA	138 GWh	Nov 1986	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%
Municipal Cogen Plant	Palm Springs, City of - (CA)	Palm Springs, CA	8 GWh	Apr 1985	Jul 2026	Natural Gas
Southeast Kern River Cogen	Chevron USA Inc	Bakersfield, CA	43 GWh	Jan 1989	Jul 2026	Natural Gas
South Belridge Cogeneration Facility	AERA Energy LLC	McKittrick, CA	475 GWh	Nov 1985	Jul 2026	Natural Gas
Salinas River Cogeneration	Salinas River Cogeneration Co	San Ardo, CA	256 GWh	Oct 1991	Jul 2026	Natural Gas
Wheelabrator Shasta	Shasta Sustainable Resource Management, Inc.	Anderson, CA	290 GWh	Sep 1987	Jul 2026	Wood/Wood Waste Solids
Naval Hospital Medical Center	Department of the Navy	San Diego, CA	14 GWh	Nov 2003	Jul 2026	Natural Gas
Dixie Valley	Ormat Nevada Inc	Fallon, NV	469 GWh	May 1988	Jul 2026	Geothermal
Taft 26C Cogen	Chevron USA Inc	Taft, CA	46 GWh	Jun 1982	Jul 2026	Natural Gas
Berry Placerita Cogen	Shadow Wolf Energy	Santa Clarita, CA	4 GWh	Feb 1990	Jul 2026	Natural Gas
Kern River Eastridge Cogen	Chevron USA Inc	Bakersfield, CA	211 GWh	May 1988	Jul 2026	Natural Gas
Richmond Cogen	Chevron Products Company-Richmond	Richmond, CA	957 GWh	Jul 1992	Jul 2026	Natural Gas : 97.6% Other Gas : 2.4%
CP Kelco San Diego Plant	CP Kelco US Inc.	San Diego, CA	75 GWh	Sep 1983	Jul 2026	Natural Gas
Midway Sunset Cogen	Midway-Sunset Cogeneration Co	Fellows, CA	8 GWh	Apr 1989	Jul 2026	Natural Gas
Biola University Hybrid	Biola University	La Mirada, CA	13 GWh	Mar 1990	Jul 2026	Natural Gas
Western Power & Steam Inc	Western Power and Steam II LLC	Bakersfield, CA	21 GWh	Feb 1990	Jul 2026	Natural Gas
Collierville Powerhouse	Northern California Power Agny	Murphys, CA	407 GWh	Oct 1989	Jul 2026	Water
Goal Line LP	Goal Line LP	Escondido, CA	13 GWh	Jul 1994	Jul 2026	Natural Gas
Live Oak Limited	WCAC Operating Company	Bakersfield, CA	18 GWh	Feb 1992	Jul 2026	Natural Gas
Saint Agnes Medical Center	Saint Agnes Medical Center	Fresno, CA	32 GWh	Apr 2001	Jul 2026	Natural Gas
Martinez Refining	Martinez Refining Co	Martinez, CA	662 GWh	Oct 1995	Jul 2026	Natural Gas : 96.3% Other Gas : 3.7%
Desert Star Energy Center	Desert Star Energy Center SDG&E	Boulder City, NV	412 GWh	Apr 2000	Jul 2026	Natural Gas
La Paloma Generating Plant	CXA La Paloma LLC	McKittrick, CA	1 TWh	Dec 2002	Jul 2026	Natural Gas
Sunrise Power LLC	Sunrise Power Co LLC	Fellows, CA	2 TWh	May 2001	Jul 2026	Natural Gas
Los Medanos Energy Center	Los Medanos Energy Center LLC	Pittsburg, CA	3 TWh	Jul 2001	Jul 2026	Natural Gas
Blythe Energy Inc	AltaGas Blythe Operations Inc	Blythe, CA	407 GWh	Nov 2003	Jul 2026	Natural Gas
Delta Energy Center	Delta Energy Center LLC	Pittsburg, CA	3 TWh	Apr 2002	Jul 2026	Natural Gas
Otay Mesa Generating Project	Otay Mesa Energy Center LLC	San Diego, CA	1 TWh	Sep 2009	Jul 2026	Natural Gas
Metcalf Energy Center	Calpine Corp - Metcalf Energy Center	San Jose, CA	2 TWh	May 2005	Jul 2026	Natural Gas
Elk Hills Power LLC	Elk Hills Power LLC	Tupman, CA	3 TWh	Jun 2003	Jul 2026	Natural Gas
High Desert Power Plant	MRP Generation Holdings, LLC	Victorville, CA	3 TWh	Mar 2003	Jul 2026	Natural Gas
Pastoria Energy Facility, LLC	Calpine Corp - Pastoria Energy Center	Lebec, CA	3 TWh	Apr 2005	Jul 2026	Natural Gas
Hanford Energy Park Peaker	MRP San Joaquin Energy LLC.	Hanford, CA	2 GWh	Aug 2001	Jul 2026	Natural Gas
Mountain View I & II	AES Distributed Energy	North Palm Springs, CA	248 GWh	May 2001	Jul 2026	Wind
Los Esteros Critical Energy Center	Los Esteros Critical Energy Facility LLC	San Jose, CA	180 GWh	Jan 2003	Jul 2026	Natural Gas
Henrietta Peaker	MRP San Joaquin Energy LLC.	Lemoore, CA	4 GWh	May 2002	Jul 2026	Natural Gas
Tracy Combined Cycle Power Plant	MRP San Joaquin Energy LLC.	Tracy, CA	669 GWh	Mar 2003	Jul 2026	Natural Gas
Elk Hills Cogen	California Resources Elk Hills LLC	Tupman, CA	103 GWh	Oct 1994	Jul 2026	Natural Gas
Palomar Energy	San Diego Gas & Electric Co	Escondido, CA	1 TWh	Sep 2005	Jul 2026	Natural Gas
Donald Von Raesfeld Power Plant	City of Santa Clara - (CA)	Santa Clara, CA	910 GWh	Feb 2005	Jul 2026	Natural Gas
WWTP Power Generation Station	East Bay Municipal Util Dist - (CA)	Oakland, CA	32 GWh	Jul 1985	Jul 2026	Other Biomass Gas : 98.9% Distillate Fuel Oil : 1.1%
Malburg	City of Vernon - (CA)	Vernon, CA	281 GWh	Sep 2005	Jul 2026	Natural Gas
THUMS	THUMS Long Beach Company	Long Beach, CA	158 GWh	Dec 2002	Jul 2026	Natural Gas
SJ/SC WPCP	San Jose/Santa Clara Water P C	San Jose, CA	67 GWh	Jan 1953	Jul 2026	Natural Gas : 54.3% Other Biomass Gas : 45.6%
Miramar Energy Facility	San Diego Gas & Electric Co	San Diego, CA	12 GWh	May 2005	Jul 2026	Natural Gas
Malaga Power LLC	CalPeak Power, LLC	Fresno, CA	6 GWh	Aug 2005	Jul 2026	Natural Gas
Russell City Energy Center	Russell City Energy Company LLC	Hayward, CA	2 TWh	Jul 2013	Jul 2026	Natural Gas
Gateway Generating Station	Pacific Gas & Electric Co.	Antioch, CA	2 TWh	Dec 2008	Jul 2026	Natural Gas
Colusa Generating Station	Pacific Gas & Electric Co.	Maxwell, CA	2 TWh	Nov 2010	Jul 2026	Natural Gas
Panoche Energy Center	Panoche Energy Center, LLC	Firebaugh, CA	731 GWh	May 2009	Jul 2026	Natural Gas
Ameresco Ox Mountain	AMERESCO Ox Mountain Energy LLC	Half Moon Bay, CA	83 GWh	Nov 2008	Jul 2026	Landfill Gas
Canyon Power Plant	City of Anaheim - (CA)	Anaheim, CA	43 GWh	Jul 2011	Jul 2026	Natural Gas
Ivanpah 2	NRG Energy Services	Nipton, CA	234 GWh	Nov 2013	Jul 2026	Solar : 98.0% Natural Gas : 2.0%
Ivanpah 1	NRG Energy Services	Nipton, CA	192 GWh	Nov 2013	Jul 2026	Solar : 96.3% Natural Gas : 3.7%
Ivanpah 3	NRG Energy Services	Nipton, CA	185 GWh	Nov 2013	Jul 2026	Solar : 97.7% Natural Gas : 2.3%
UCI Facilities Management Central Plant	University of California Irvine	Irvine, CA	114 GWh	Jun 2007	Jul 2026	Natural Gas
Marsh Landing Generating Station	Marsh Landing LLC	Antioch, CA	26 GWh	Apr 2013	Jul 2026	Natural Gas
Mojave Solar Project	Mojave Solar LLC	Hinkley, CA	588 GWh	Nov 2014	Jul 2026	Solar
Panoche Valley Solar Farm	RWE Clean Energy	Paicines, CA	243 GWh	Dec 2017	Jul 2026	Solar
Agua Caliente Solar Project	Agua Caliente Solar	Dateland, AZ	507 GWh	Apr 2012	Jul 2026	Solar
AV Solar Ranch One	AV Solar Ranch 1 LLC	Lancaster, CA	555 GWh	Jul 2014	Jul 2026	Solar
Genesis Solar Energy Project	Genesis Solar LLC	Blythe, CA	589 GWh	Oct 2013	Jul 2026	Solar
Sentinel Energy Center, LLC	Sentinel Energy Center LLC	Desert Hot Springs, CA	165 GWh	Apr 2013	Jul 2026	Natural Gas
Mariposa Energy Project	Diamond Generating Corporation	Byron, CA	30 GWh	Sep 2012	Jul 2026	Natural Gas
Ocotillo Express LLC	Pattern Operators LP	Ocotillo, CA	411 GWh	Nov 2012	Jul 2026	Wind
Walnut Creek Energy Park	Walnut Creek LLC	Industry, CA	48 GWh	Mar 2013	Jul 2026	Natural Gas
Algonquin Power Sanger LLC	Clearlight Energy Sanger LLC	Sanger, CA	3 GWh	Nov 2007	Jul 2026	Natural Gas
CCCSD Wastewater Treatment Plnt	Central Contra Costa Sanitary District	Martinez, CA	20 GWh	Nov 1995	Jul 2026	Natural Gas
University of California San Diego Hybri	University of California San Diego	La Jolla, CA	227 GWh	Jun 2001	Jul 2026	Natural Gas
Oxnard Paper Mill	New-Indy, Oxnard LLC	Oxnard, CA	183 GWh	Feb 1986	Jul 2026	Natural Gas
Topaz Solar Farm	Topaz Solar Farms LLC	Santa Margarita, CA	974 GWh	Mar 2013	Jul 2026	Solar
Signal Hill West Unit	Signal Hill Petroleum, Inc	Signal Hill, CA	39 GWh	Jun 2004	Jul 2026	Other Gas
Watkins Manufacturing Co.	Watkins Manufacturing Corporation	San Diego, CA	8 GWh	Oct 2001	Jul 2026	Natural Gas
El Segundo Energy Center LLC	NRG Energy Services LLC	El Segundo, CA	63 GWh	Jun 2013	Jul 2026	Natural Gas
Tule Wind LLC	Avangrid Power LLC	Boulevard, CA	346 GWh	Nov 2017	Jul 2026	Wind
Lodi Energy Center	Northern California Power Agny	Lodi, CA	456 GWh	Oct 2012	Jul 2026	Natural Gas
Brea Expansion Plant	Brea Power II	Brea, CA	243 GWh	Oct 2012	Jul 2026	Landfill Gas
Kern Oil & Refining Co	Kern Oil & Refining Co	Bakersfield, CA	36 GWh	Sep 2002	Jul 2026	Natural Gas
Foundation Superior Farms	Foundation CA Fund VI Manager LLC	Dixon, CA	766 MWh	Nov 2012	Jul 2026	Wind
Foundation Wal-Mart Red Bluff	Foundation CA Fund VI Manager LLC	Red Bluff, CA	1 GWh	Aug 2012	Jul 2026	Wind
CSUF Trigeneration	California State University at Fullerton	Fullerton, CA	34 GWh	Sep 2010	Jul 2026	Natural Gas : 80.2% Solar : 19.8%
Parnassus Central Utility Plant	University of California-San Francisco	San Francisco, CA	67 GWh	Dec 1995	Jul 2026	Natural Gas
Hoag Hospital Cogen Plant	Hoag Memorial Presbyterian Hospital	Newport Beach, CA	27 GWh	Jun 2006	Jul 2026	Natural Gas
C&H Sugar Plant	C&H Sugar Company Inc	Crockett, CA	36 GWh	Sep 1957	Jul 2026	Purchased Steam
Solar Star 1	Solar Star California XIX, LLC	Rosamond, CA	880 GWh	Feb 2014	Jul 2026	Solar
Solar Star 2	Solar Star California XX, LLC	Rosamond, CA	764 GWh	Feb 2014	Jul 2026	Solar
Sunshine Gas Producers	Sunshine Gas Producers LLC	Sylmar, CA	132 GWh	Jul 2014	Jul 2026	Landfill Gas
Silver State Solar Power South	Silver State Solar Power South, LLC	Primm Valley, NV	621 GWh	Oct 2015	Jul 2026	Solar
Carlsbad Energy Center	NRG California Peaker Operations LLC	Carlsbad, CA	201 GWh	Nov 2018	Jul 2026	Natural Gas
SC 1 Data Center, Phase 2	Xeres Ventures LLC	Santa Clara, CA	267 MWh	Aug 2011	Jul 2026	Distillate Fuel Oil
Golden Acorn Casino	Foundation HA Energy Generation, LLC	Campo, CA	4 GWh	Jun 2014	Jul 2026	Wind
Anheuser-Busch #2	Foundation HA Energy Generation, LLC	Fairfield, CA	3 GWh	Oct 2014	Jul 2026	Wind
W Plant	Qualcomm Incorporated	San Diego, CA	14 GWh	Jun 2005	Jul 2026	Natural Gas

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#25	Arizona Public Service Company	25.8 TWh	102
#55	Arlington Valley, LLC	3.2 TWh	1
#38	Balancing Authority of Northern California	13.9 TWh	91
#49	Imperial Irrigation District	6.2 TWh	66
#29	Los Angeles Department of Water and Power	19.3 TWh	132
#22	Nevada Power Company	38.6 TWh	143
#51	PUD No. 1 of Douglas County	4.4 TWh	5
#19	Salt River Project Agricultural Improvement and Power District	60.5 TWh	51
#57	Turlock Irrigation District	1.9 TWh	11
#39	Western Area Power Administration - Desert Southwest Region	10.6 TWh	36

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#3	Electric Reliability Council of Texas, Inc.	506.3 TWh	1,487
#5	Southwest Power Pool	314.5 TWh	876
#6	Southern Company Services, Inc. - Trans	259.3 TWh	423
#7	California Independent System Operator	168.7 TWh	2,170
#9	Tennessee Valley Authority	166.2 TWh	209
#10	Florida Power & Light Co.	153.0 TWh	188
#12	New York Independent System Operator	134.1 TWh	1,334
#13	Duke Energy Carolinas	113.4 TWh	578
#15	ISO New England	112.2 TWh	1,667
#16	Bonneville Power Administration	91.1 TWh	170