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
Wolfskill Energy Center	Gilroy Energy Center LLC	Fairfield, CA	4 GWh	Dec 2002	Dec 2025	Natural Gas
Wellhead Power Panoche	Wellhead Services, Inc	Firebaugh, CA	7 GWh	Jul 1973	Dec 2025	Natural Gas
Century Generating Facility	Colton Power LP	Colton, CA	563 MWh	Aug 2001	Dec 2025	Natural Gas
Drews Generating Facility	Colton Power LP	Colton, CA	570 MWh	Jul 2001	Dec 2025	Natural Gas
Agua Mansa Power Plant	E I Colton LLC	Colton, CA	4 GWh	May 2003	Dec 2025	Natural Gas
Riverview Energy Center	Gilroy Energy Center for Riverview	Antioch, CA	12 GWh	Apr 2003	Dec 2025	Natural Gas
Cabazon Wind Partners	Shell Wind Energy Inc.	Cabazon, CA	108 GWh	Sep 2002	Dec 2025	Wind
Whitewater Hill Wind Partners	Shell Wind Energy Inc.	North Palm Springs, CA	127 GWh	Sep 2002	Dec 2025	Wind
H. Gonzales	City of Vernon - (CA)	Vernon, CA	29 MWh	Dec 1986	Dec 2025	Natural Gas
High Winds LLC	FPLE High Winds, LLC	Birds Landing, CA	214 GWh	Jun 2003	Dec 2025	Wind
Blacksand Generating Facility	Bridge Energy LLC	Brea, CA	31 GWh	May 2000	Dec 2025	Natural Gas
Mountain View III	Avangrid Power LLC	North Palm Springs, CA	81 GWh	Nov 2003	Dec 2025	Wind
Springville Hydroelectric	Calleguas Mun Water District	Camarillo, CA	659 MWh	Feb 1994	Dec 2025	Water
Regional Wastewater Control Facility	City of Stockton MUD - (CA)	Stockton, CA	4 GWh	Oct 2000	Dec 2025	Other Biomass Gas : 98.0% Natural Gas : 1.9%
Riverside Energy Resource Center	City of Riverside - (CA)	Riverside, CA	17 GWh	May 2006	Dec 2025	Natural Gas
Springs Generating Station	City of Riverside - (CA)	Riverside, CA	878 MWh	Jun 2002	Dec 2025	Natural Gas
Diablo Winds LLC	Sequitur Renewables, LLC	Livermore, CA	31 GWh	Nov 2004	Dec 2025	Wind
Kumeyaay Wind	Leeward Asset Management, LLC	Campo, CA	131 GWh	Nov 2005	Dec 2025	Wind
Oasis Wind	Terra-Gen Operating Co-Wind	Mojave, CA	221 GWh	Nov 2004	Dec 2025	Wind
Bear Valley Power Plant	Bear Valley Electric Service	Big Bear Lake, CA	2 GWh	Dec 2004	Dec 2025	Natural Gas
Clearwater Power Plant	City of Riverside - (CA)	Corona, CA	4 GWh	Feb 2005	Dec 2025	Natural Gas
Shiloh I Wind Project	Avangrid Power LLC	Rio Vista, CA	400 GWh	Apr 2006	Dec 2025	Wind
Ameresco Santa Cruz Energy	AMERESCO Santa Cruz Energy LLC	Watsonville, CA	14 GWh	Dec 2005	Dec 2025	Landfill Gas
Buena Vista Energy LLC	Leeward Asset Management, LLC	Byron, CA	96 GWh	Nov 2006	Dec 2025	Wind
McGrath Peaker	Southern California Edison Co	Oxnard, CA	3 GWh	Oct 2012	Dec 2025	Natural Gas
Grapeland Hybrid	Southern California Edison Co	Rancho Cucamonga, CA	2 GWh	Aug 2007	Dec 2025	Natural Gas
Mira Loma Peaker	Southern California Edison Co	Ontario, CA	1 GWh	Aug 2007	Dec 2025	Natural Gas
Barre Peaker	Southern California Edison Co	Stanton, CA	5 GWh	Aug 2007	Dec 2025	Natural Gas
Center Hybrid	Southern California Edison Co	Norwalk, CA	2 GWh	Aug 2007	Dec 2025	Natural Gas
Midway Peaking LLC	CalPeak Power, LLC	Firebaugh, CA	6 GWh	Apr 2009	Dec 2025	Natural Gas
Hatchet Ridge Wind Project	Pattern Operators LP	Burney, CA	271 GWh	Nov 2010	Dec 2025	Wind
CalRenew-1	CalRenew-1 LLC	Mendota, CA	2 GWh	Mar 2010	Dec 2025	Solar
Dillon Wind LLC	Avangrid Power LLC	North Palm Springs, CA	138 GWh	Mar 2008	Dec 2025	Wind
CSU Fresno Solar Project	MMA Fresno Power LP	Fresno, CA	1 GWh	Nov 2007	Dec 2025	Solar
Shiloh Wind Project 2 LLC	EDF Renewable Asset Holdings, Inc.	Birds Landing, CA	369 GWh	Dec 2008	Dec 2025	Wind
Ameresco Keller Canyon	AMERESCO Keller Canyon LLC	Bay Point, CA	16 GWh	Jun 2009	Dec 2025	Landfill Gas
Gap Pacific Distribution Center	MN8 Energy LLC	Fresno, CA	5 GWh	Sep 2008	Dec 2025	Solar
Orange Grove Peaking Facility	Orange Grove Energy LP	Pala, CA	9 GWh	May 2010	Dec 2025	Natural Gas
Imperial Valley Solar, LLC	Imperial Valley Solar, LLC	Calexico, CA	442 GWh	Oct 2013	Dec 2025	Solar
Solar Blythe LLC	NRG Solar Blythe	Blythe, CA	39 GWh	Nov 2009	Dec 2025	Solar
CM10	RWE Clean Energy	Boulder City, NV	18 GWh	Nov 2008	Dec 2025	Solar
El Cajon Energy Center	Wellhead Services, Inc	El Cajon, CA	20 GWh	May 2010	Dec 2025	Natural Gas
SunEdison Walgreens Moreno Valley	SunE WG113 Moreno Valley LLC	Moreno Valley, CA	599 MWh	Aug 2007	Dec 2025	Solar
Mariani Packing Vacaville Solar	SunE U6 Holdings LLC	Vacaville, CA	586 MWh	Oct 2008	Dec 2025	Solar
Walgreens Woodland Distribution Center	SunE WG45 Woodland LLC	Woodland, CA	432 MWh	Jul 2007	Dec 2025	Solar
SunEdison Ironwood State Prison	SunE CPA CDC2 LLC	Blythe, CA	1 GWh	Apr 2008	Dec 2025	Solar
SunEdison Procter & Gamble Oxnard	SunE U6 Holdings LLC	Oxnard, CA	2 GWh	Sep 2009	Dec 2025	Solar
Kohls San Bernardino Solar Facility	SunE WF3 KHL A Holdings, LLC	San Bernardino, CA	1 GWh	Oct 2007	Dec 2025	Solar
SunEdison Anheuser Busch Fairfield	SunE M5 Holdings LLC	Fairfield, CA	1 GWh	Nov 2008	Dec 2025	Solar
Chuckawalla Valley State Prison	SunE CPA CDC1 LLC	Blythe, CA	502 MWh	May 2006	Dec 2025	Solar
Vaca Dixon Solar Station	Pacific Gas & Electric Co.	Vacaville, CA	3 GWh	Nov 2009	Dec 2025	Solar
G2 Energy Ostrom Road LLC	G2 Energy LLC	Wheatland, CA	28 GWh	Jan 2009	Dec 2025	Landfill Gas
Calabasas Gas to Energy Facility	Los Angeles County Sanitation	Agoura, CA	32 GWh	Jun 2010	Dec 2025	Landfill Gas
FPL Energy Montezuma Winds LLC	FPL Energy Montezuma Wind	Birds Landing, CA	96 GWh	Oct 2010	Dec 2025	Wind
CM48	RWE Clean Energy	Boulder City, NV	90 GWh	May 2010	Dec 2025	Solar
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
Alpine Solar	Alpine BESS LLC	Lancaster, CA	114 GWh	Jan 2013	Dec 2025	Solar
Garnet Wind Energy Center	Terra-Gen Operating Co-Wind	North Palm Springs, CA	17 GWh	May 2009	Dec 2025	Wind
Avenal Park	Avenal Solar Holdings LLC	Avenal, CA	10 GWh	Jul 2011	Dec 2025	Solar
Sun City Project LLC	Avenal Solar Holdings LLC	Avenal, CA	33 GWh	Jul 2011	Dec 2025	Solar
Sand Drag LLC	Avenal Solar Holdings LLC	Avenal, CA	32 GWh	Jul 2011	Dec 2025	Solar
California Valley Solar Ranch	Clearway Energy Operating LLC	California Valley, CA	559 GWh	Aug 2012	Dec 2025	Solar
Solar Photovoltaic Project #42	Southern California Edison Co	Tulare, CA	6 GWh	Oct 2012	Dec 2025	Solar
Solar Borrego I	NRG Solar Borrego I	Borrego Springs, CA	61 GWh	Jan 2013	Dec 2025	Solar
Mountain View IV	AES Distributed Energy	North Palm Springs, CA	173 GWh	Jan 2012	Dec 2025	Wind
Caltech Central	Bloom Energy 2009 PPA	Pasadena, CA	8 GWh	Oct 2010	Dec 2025	Natural Gas
Manzana Wind LLC	Avangrid Power LLC	Rosamond, CA	519 GWh	Nov 2012	Dec 2025	Wind
Imperial Solar Energy Center South	CSOLAR IV South LLC	Calexico, CA	251 GWh	Oct 2013	Dec 2025	Solar
Imperial Solar Energy Center West	CSOLAR IV West LLC	Seeley, CA	357 GWh	Mar 2016	Dec 2025	Solar
Stroud Solar Station	Pacific Gas & Electric Co.	Helm, CA	15 GWh	Aug 2011	Dec 2025	Solar
Five Points Solar Station	Pacific Gas & Electric Co.	Five Points, CA	13 GWh	Aug 2011	Dec 2025	Solar
Westside Solar Station	Pacific Gas & Electric Co.	Five Points, CA	12 GWh	Jul 2011	Dec 2025	Solar
FRV SI Transport Solar LP	FRV SI Transport Solar, L.P. (Sacremento)	Sacramento, CA	1 GWh	Jul 2010	Dec 2025	Solar
Giffen	Pacific Gas & Electric Co.	TBD, CA	12 GWh	May 2012	Dec 2025	Solar
Cantua Solar Station	Pacific Gas & Electric Co.	TBD, CA	23 GWh	May 2012	Dec 2025	Solar
Huron Solar Station	Pacific Gas & Electric Co.	Huron, CA	28 GWh	May 2012	Dec 2025	Solar
Pio Pico Energy Center	Pio Pico Energy Center LLC	San Diego, CA	47 GWh	Oct 2016	Dec 2025	Natural Gas
Sunnyvale City of WPCP	City of Sunnyvale WPCP - (CA)	Sunnyvale, CA	7 GWh	Oct 1997	Dec 2025	Other Biomass Gas : 41.3% Landfill Gas : 36.4% Natural Gas : 22.3%
Sunset Reservoir North Basin	Duke Energy Renewables Services	San Francisco, CA	6 GWh	Aug 2010	Dec 2025	Solar
Robert O Schulz Solar Farm	South San Joaquin Irr District	Oakdale, CA	4 GWh	Apr 2008	Dec 2025	Solar
Shiloh III Wind Project LLC	EDF Renewable Asset Holdings, Inc.	Birds Landing, CA	282 GWh	Nov 2011	Dec 2025	Wind
Teichert Materials-Teichert Vernalis	Foundation HA Energy Generation, LLC	San Joaquin, CA	2 GWh	Sep 2010	Dec 2025	Wind
Rising Tree Wind Farm	Rising Tree Wind Farm LLC	Mojave, CA	250 GWh	Dec 2014	Dec 2025	Wind
Foundation ST	Foundation HA Energy Generation, LLC	Tracy, CA	2 GWh	May 2011	Dec 2025	Wind
Regulus Solar Project	Regulus Solar, LLC	Bakersfield, CA	150 GWh	Oct 2014	Dec 2025	Solar
Adobe Solar	Southern Power Co	Arvin, CA	36 GWh	Apr 2014	Dec 2025	Solar
Temescal Canyon RV, LLC	Temescal Canyon RV, LLC	Corona, CA	2 GWh	Apr 2011	Dec 2025	Solar
City of Madera WWTP	SunE GIL1, LLC	Madera, CA	2 GWh	Aug 2009	Dec 2025	Solar
Staples La Mirada, CA	SunE WF3-ST Holdings, LLC	La Mirada, CA	1 GWh	Feb 2009	Dec 2025	Solar
Power Generation Station (PGS) 2	East Bay Municipal Util Dist - (CA)	Oakland, CA	20 GWh	Nov 2011	Dec 2025	Other Biomass Gas
Montezuma Wind II	NextEra Energy Montezuma Wind II, LLC	Birds Landing, CA	196 GWh	Dec 2011	Dec 2025	Wind
Mesquite Solar 1	RWE Clean Energy	Tonopah, AZ	392 GWh	Oct 2011	Dec 2025	Solar
North Palm Springs 4A	Altus Power America Management, LLC	Palm Springs, CA	8 GWh	Sep 2012	Dec 2025	Solar
Shiloh IV Wind Project LLC	EDF Renewable Asset Holdings, Inc.	Birds Landing, CA	293 GWh	Nov 2012	Dec 2025	Wind
North Palm Springs 1A	Altus Power America Management, LLC	Palm Springs, CA	5 GWh	Mar 2012	Dec 2025	Solar
Pacific Wind LLC	EDF Renewable Asset Holdings, Inc.	Rosamond, CA	295 GWh	Jul 2012	Dec 2025	Wind

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