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
SunEdison Walgreens Moreno Valley	SunE WG113 Moreno Valley LLC	Moreno Valley, CA	599 MWh	Aug 2007	Dec 2025	Solar
Walgreens Woodland Distribution Center	SunE WG45 Woodland LLC	Woodland, CA	432 MWh	Jul 2007	Dec 2025	Solar
UCI Facilities Management Central Plant	University of California Irvine	Irvine, CA	114 GWh	Jun 2007	Jul 2026	Natural Gas
Transamerica Pyramid	Transamerica Pyramid Properties LLC	San Francisco, CA	4 MWh	Jun 2007	Dec 2025	Natural Gas
Energy Center	University of Redlands	Redlands, CA	4 GWh	Jan 2007	Dec 2025	Natural Gas
Buena Vista Energy LLC	Leeward Asset Management, LLC	Byron, CA	96 GWh	Nov 2006	Dec 2025	Wind
Hoag Hospital Cogen Plant	Hoag Memorial Presbyterian Hospital	Newport Beach, CA	27 GWh	Jun 2006	Jul 2026	Natural Gas
Riverside Energy Resource Center	City of Riverside - (CA)	Riverside, CA	17 GWh	May 2006	Nov 2025	Natural Gas
Chuckawalla Valley State Prison	SunE CPA CDC1 LLC	Blythe, CA	502 MWh	May 2006	Dec 2025	Solar
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
Mountainview Generating Station	Southern California Edison Co	Redlands, CA	1 TWh	Nov 2005	Jul 2026	Natural Gas
Kumeyaay Wind	Leeward Asset Management, LLC	Campo, CA	131 GWh	Nov 2005	Dec 2025	Wind
Palomar Energy	San Diego Gas & Electric Co	Escondido, CA	1 TWh	Sep 2005	Jul 2026	Natural Gas
Malburg	City of Vernon - (CA)	Vernon, CA	281 GWh	Sep 2005	Jul 2026	Natural Gas
Malaga Power LLC	CalPeak Power, LLC	Fresno, CA	6 GWh	Aug 2005	Jul 2026	Natural Gas
W Plant	Qualcomm Incorporated	San Diego, CA	14 GWh	Jun 2005	Jul 2026	Natural Gas
Metcalf Energy Center	Calpine Corp - Metcalf Energy Center	San Jose, CA	2 TWh	May 2005	Jul 2026	Natural Gas
Miramar Energy Facility	San Diego Gas & Electric Co	San Diego, CA	12 GWh	May 2005	Jul 2026	Natural Gas
Coram Energy LLC (ECT)	Nextera Energy Resources	Tehachapi, CA	22 GWh	Apr 2005	Dec 2025	Wind
Pastoria Energy Facility, LLC	Calpine Corp - Pastoria Energy Center	Lebec, CA	3 TWh	Apr 2005	Jul 2026	Natural Gas
Sierra Nevada Brewing Co Hybrid	Sierra Nevada Brewing Co	Chico, CA	11 GWh	Apr 2005	Dec 2025	Natural Gas : 65.7% Solar : 19.5% Other Biomass Gas : 14.9%
Donald Von Raesfeld Power Plant	City of Santa Clara - (CA)	Santa Clara, CA	910 GWh	Feb 2005	Jul 2026	Natural Gas
Clearwater Power Plant	City of Riverside - (CA)	Corona, CA	4 GWh	Feb 2005	Dec 2025	Natural Gas
Coram Energy LLC	Nextera Energy Resources	Tehachapi, CA	9 GWh	Dec 2004	Dec 2025	Wind
Bear Valley Power Plant	Bear Valley Electric Service	Big Bear Lake, CA	2 GWh	Dec 2004	Dec 2025	Natural Gas
Diablo Winds LLC	Sequitur Renewables, LLC	Livermore, CA	31 GWh	Nov 2004	Dec 2025	Wind
Oasis Wind	Terra-Gen Operating Co-Wind	Mojave, CA	221 GWh	Nov 2004	Dec 2025	Wind
Lincoln Landfill	Energy 2001 Inc	Lincoln, CA	29 GWh	Oct 2004	Dec 2025	Landfill Gas
Signal Hill West Unit	Signal Hill Petroleum, Inc	Signal Hill, CA	39 GWh	Jun 2004	Jul 2026	Other Gas
Sycamore Energy LLC	Sycamore Energy LLC	Santee, CA	23 GWh	Mar 2004	Dec 2025	Landfill Gas
Sierra Pacific Lincoln Facility	Sierra Pacific Industries	Lincoln, CA	80 GWh	Feb 2004	Dec 2025	Wood/Wood Waste Solids
Naval Hospital Medical Center	Department of the Navy	San Diego, CA	14 GWh	Nov 2003	Jul 2026	Natural Gas
Blythe Energy Inc	AltaGas Blythe Operations Inc	Blythe, CA	407 GWh	Nov 2003	Jul 2026	Natural Gas
Mountain View III	Avangrid Power LLC	North Palm Springs, CA	81 GWh	Nov 2003	Dec 2025	Wind
One Market Plaza	Paramount Group Inc	San Francisco, CA	1 GWh	Nov 2003	Dec 2025	Natural Gas
California Institute of Technology	California Institute-Technology	Pasadena, CA	74 GWh	Jul 2003	Jul 2026	Natural Gas
Elk Hills Power LLC	Elk Hills Power LLC	Tupman, CA	3 TWh	Jun 2003	Jul 2026	Natural Gas
High Winds LLC	FPLE High Winds, LLC	Birds Landing, CA	214 GWh	Jun 2003	Dec 2025	Wind
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
High Desert Power Plant	MRP Generation Holdings, LLC	Victorville, CA	3 TWh	Mar 2003	Jul 2026	Natural Gas
Tracy Combined Cycle Power Plant	MRP San Joaquin Energy LLC.	Tracy, CA	669 GWh	Mar 2003	Jul 2026	Natural Gas
Los Esteros Critical Energy Center	Los Esteros Critical Energy Facility LLC	San Jose, CA	180 GWh	Jan 2003	Jul 2026	Natural Gas
MCAGCC Cogen Plant	DOD USMC Marine Air Ground Combat	Twentynine Palms, CA	68 GWh	Jan 2003	Dec 2025	Natural Gas
La Paloma Generating Plant	CXA La Paloma LLC	McKittrick, CA	1 TWh	Dec 2002	Jul 2026	Natural Gas
Creed Energy Center	Creed Energy Center LLC	Suisun, CA	3 GWh	Dec 2002	Nov 2025	Natural Gas
Lambie Energy Center	Gilroy Energy Center LLC	Suisun, CA	5 GWh	Dec 2002	Dec 2025	Natural Gas
Goose Haven Energy Center	Goose Haven Energy Center	Suisun, CA	4 GWh	Dec 2002	Dec 2025	Natural Gas
Feather River Energy Center	Calpine Corp-Yuba City	Yuba City, CA	35 GWh	Dec 2002	Dec 2025	Natural Gas
Wolfskill Energy Center	Gilroy Energy Center LLC	Fairfield, CA	4 GWh	Dec 2002	Dec 2025	Natural Gas
THUMS	THUMS Long Beach Company	Long Beach, CA	158 GWh	Dec 2002	Jul 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	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
Kern Oil & Refining Co	Kern Oil & Refining Co	Bakersfield, CA	36 GWh	Sep 2002	Jul 2026	Natural Gas
San Diego State University	San Diego State University	San Diego, CA	59 GWh	Aug 2002	Jul 2026	Natural Gas : 97.5% Solar : 2.5%
Yuba City Energy Center	Calpine Corp-Yuba City	Yuba City, CA	23 GWh	Jul 2002	Dec 2025	Natural Gas
Springs Generating Station	City of Riverside - (CA)	Riverside, CA	878 MWh	Jun 2002	Dec 2025	Natural Gas
CalPeak Power Vaca Dixon Peaker Plant	CalPeak Power, LLC	Vacaville, CA	7 GWh	May 2002	Dec 2025	Natural Gas
Henrietta Peaker	MRP San Joaquin Energy LLC.	Lemoore, CA	4 GWh	May 2002	Jul 2026	Natural Gas
SF Southeast Cogen Plant	City & County of San Francisco - (CA)	San Francisco, CA	341 MWh	May 2002	Dec 2025	Other Biomass Gas
Delta Energy Center	Delta Energy Center LLC	Pittsburg, CA	3 TWh	Apr 2002	Jul 2026	Natural Gas
Cuyamaca Peak Energy Plant	San Diego Gas & Electric Co	El Cajon, CA	10 GWh	Apr 2002	Dec 2025	Natural Gas
King City Peaking	Calpine Corp-King City	King City, CA	5 GWh	Mar 2002	Dec 2025	Natural Gas
Irwindale Brew Yard, LLC	Irwindale Brew Yard, LLC	Irwindale, CA	517 MWh	Jan 2002	Apr 2025	Solar : 99.8%
CalPeak Power Panoche Peaker Plant	CalPeak Power, LLC	Firebaugh, CA	2 GWh	Nov 2001	Nov 2025	Natural Gas
Border Hybrid Energy Center	CalPeak Power, LLC	San Diego, CA	9 GWh	Oct 2001	Dec 2025	Natural Gas
CalPeak Power Enterprise Peaker Plant	CalPeak Power, LLC	Escondido, CA	2 GWh	Oct 2001	Dec 2025	Natural Gas
Gilroy Peaking Energy Center	Calpine Gilroy Cogen LP	Gilroy, CA	31 GWh	Oct 2001	Dec 2025	Natural Gas
Watkins Manufacturing Co.	Watkins Manufacturing Corporation	San Diego, CA	8 GWh	Oct 2001	Jul 2026	Natural Gas
Hanford Energy Park Peaker	MRP San Joaquin Energy LLC.	Hanford, CA	2 GWh	Aug 2001	Jul 2026	Natural Gas
Century Generating Facility	Colton Power LP	Colton, CA	563 MWh	Aug 2001	Dec 2025	Natural Gas
Santa Rita Jail Hybrid	County of Alameda GSA - (CA)	Dublin, CA	10 GWh	Aug 2001	Dec 2025	Natural Gas : 77.7% Solar : 22.3%
Los Medanos Energy Center	Los Medanos Energy Center LLC	Pittsburg, CA	3 TWh	Jul 2001	Jul 2026	Natural Gas
Drews Generating Facility	Colton Power LP	Colton, CA	570 MWh	Jul 2001	Dec 2025	Natural Gas
Red Bluff	California Power Holdings LLC	Red Bluff, CA	3 GWh	Jul 2001	Dec 2025	Natural Gas
Indigo Energy Facility	Diamond Generating Corporation	North Palm Springs, CA	6 GWh	Jun 2001	Dec 2025	Natural Gas
Larkspur Energy Facility	Diamond Generating Corporation	San Diego, CA	23 GWh	Jun 2001	Dec 2025	Natural Gas
University of California San Diego Hybri	University of California San Diego	La Jolla, CA	227 GWh	Jun 2001	Jul 2026	Natural Gas
Sunrise Power LLC	Sunrise Power Co LLC	Fellows, CA	2 TWh	May 2001	Jul 2026	Natural Gas
Mountain View I & II	AES Distributed Energy	North Palm Springs, CA	248 GWh	May 2001	Jul 2026	Wind
Chowchilla II	California Power Holdings LLC	Chowchilla, CA	14 GWh	May 2001	Dec 2025	Natural Gas
Diamond Valley Lake	Metropolitan Water District of S CA	Winchester, CA	1 GWh	Apr 2001	Oct 2025	Water
Saint Agnes Medical Center	Saint Agnes Medical Center	Fresno, CA	32 GWh	Apr 2001	Jul 2026	Natural Gas
Chula Vista Energy Center	Wellhead Services, Inc	Chula Vista, CA	387 MWh	Apr 2001	Oct 2025	Natural Gas
Sierra Pacific Sonora	Sierra Pacific Industries	Standard, CA	43 GWh	Jan 2001	Dec 2025	Wood/Wood Waste Solids
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%
Blacksand Generating Facility	Bridge Energy LLC	Brea, CA	31 GWh	May 2000	Dec 2025	Natural Gas
Desert Star Energy Center	Desert Star Energy Center SDG&E	Boulder City, NV	412 GWh	Apr 2000	Jul 2026	Natural Gas
Childrens Hospital	DTE San Diego COGEN Inc.	San Diego, CA	26 GWh	Mar 2000	Jul 2026	Natural Gas
San Gorgonio Westwinds II LLC	Terra-Gen Operating Co-Wind	North Palm Springs, CA	123 GWh	May 1999	Dec 2025	Wind
Phoenix Wind Power LLC	Avangrid Power LLC	North Palm Springs, CA	5 GWh	May 1999	Dec 2025	Wind
Salka Cabazon Wind	Salka Cabazon Wind LLC	North Palm Springs, CA	13 GWh	Dec 1998	Dec 2025	Wind
MM Lopez Energy	MM Lopez Energy LLC	Lake View Terrace, CA	26 GWh	Nov 1998	Dec 2025	Landfill Gas
Marina Landfill Gas	Monterey Regional Waste Mgmt	Marina, CA	10 GWh	Mar 1998	Dec 2025	Landfill 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%
MM San Diego-Miramar	MM San Diego Energy-Miramar	San Diego, CA	40 GWh	Jun 1997	Dec 2025	Landfill Gas : 91.4% Other Biomass Gas : 8.6%
Tehachapi Wind Resource II	CalWind Resources Inc	Tehachapi, CA	48 GWh	Dec 1996	Dec 2025	Wind
Mojave Siphon	California Dept. of Water Resources	Hesperia, CA	46 GWh	Jul 1996	Dec 2025	Water

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