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
RE Columbia 3 LLC	MN8 Energy LLC	Mojave, CA	23 GWh	Dec 2013	Dec 2025	Solar
RE Camelot LLC	Onward Energy	Mojave, CA	121 GWh	Nov 2014	Dec 2025	Solar
RE Astoria 2	RE Astoria 2 LLC	Rosamond, CA	177 GWh	Nov 2016	May 2026	Solar
RE Astoria	RE Astoria LLC	Rosamond, CA	187 GWh	Nov 2016	May 2026	Solar
RE Adams East, LLC	Onward Energy	Fresno, CA	41 GWh	Nov 2014	Dec 2025	Solar
RCWD PV Project	MN8 Energy LLC	Murrieta, CA	8 GWh	May 2016	Dec 2025	Solar
RB Inyokern Solar WDAT 1281 (CSG)	Dimension Energy LLC	Ridgecrest, CA	34 GWh	Nov 2024	Dec 2025	Solar
RB Inyokern Solar WDAT 1203 (CSG)	Dimension Energy LLC	Ridgecrest, CA	58 GWh	Nov 2024	Dec 2025	Solar
Ratkovich Alhambra	Bloom Energy	Alhambra, CA	7 GWh	Nov 2018	Dec 2025	Natural Gas
Rancho Cucamonga Dist #1	Altus Power America Management, LLC	Rancho Cucamonga, CA	3 GWh	Mar 2015	Dec 2025	Solar
Ramona Solar Energy	San Diego Gas & Electric Co	Ramona, CA	2 GWh	Mar 2017	Dec 2025	Solar
Ramona 2	MN8 Energy LLC	Ramona, CA	9 GWh	Nov 2013	Dec 2025	Solar
Ramona 1	MN8 Energy LLC	Ramona, CA	3 GWh	Nov 2013	Dec 2025	Solar
Ralston	Placer County Water Agency - (CA)	Foresthill, CA	303 GWh	Sep 1966	Dec 2025	Water
Radiance Solar 5	Altus Power America Management, LLC	Lancaster, CA	3 GWh	Jun 2013	Dec 2025	Solar
Radiance Solar 4	Altus Power America Management, LLC	Lancaster, CA	3 GWh	Jun 2013	Dec 2025	Solar
Raceway Solar & Storage	AES Clean Energy	Lancaster, CA	362 GWh	Apr 2024	May 2026	Solar
Rabbitbrush Solar, LLC	Leeward Asset Management, LLC	Rosamond, CA	256 GWh	Sep 2022	May 2026	Solar
R C Kirkwood	City & County of San Francisco - (CA)	Groveland, CA	489 GWh	Jan 1967	May 2026	Water
Quinto Solar PV Project	Arevon Energy, Inc.	Gustine, CA	243 GWh	Oct 2015	Dec 2025	Solar
PVN Milliken, LLC	PVN Milliken, LLC	Ontario, CA	5 GWh	May 2017	Dec 2025	Solar
Pumpjack Solar I	Duke Energy Renewables Services	McKittrick, CA	51 GWh	Dec 2014	Dec 2025	Solar
Puente Hills Energy Recovery	Los Angeles County Sanitation	Whittier, CA	147 GWh	Sep 1986	May 2026	Landfill Gas
PSREC/SIAD Solar	Plumas Sierra Rural Electric Coop	Herlong, CA	6 GWh	Aug 2018	Dec 2025	Solar
Proxima	Proxima Solar, LLC	Crows Landing, CA	465 GWh	Mar 2024	May 2026	Solar
Prologis L.P	Powerflex	Tracy, CA	6 GWh	Jul 2018	Dec 2025	Solar
Powhatan Solar Power Generation Station	AES Distributed Energy	Apple Valley, CA	4 GWh	Nov 2013	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
Potrero Hills Energy Producers	Potrero Hills Energy Producers, LLC	Suisun City, CA	56 GWh	Mar 2016	Dec 2025	Landfill Gas
Porterville Solar	Altus Power America Management, LLC	Porterville, CA	6 GWh	Dec 2013	Dec 2025	Solar
Porterville 6 and 7	Arevon Energy, Inc.	Porterville, CA	4 GWh	Jun 2014	Dec 2025	Solar
Portal Ridge Solar C, LLC	Portal Ridge Solar, LLC	Lancaster, CA	29 GWh	Jan 2017	Dec 2025	Solar
Portal Ridge Solar B, LLC	Portal Ridge Solar, LLC	Lancaster, CA	53 GWh	Jan 2017	Dec 2025	Solar
Portal	Southern California Edison Co	Lakeshore, CA	26 GWh	Nov 1956	Dec 2025	Water
Poole	Southern California Edison Co	Lee Vining, CA	22 GWh	Apr 1924	Dec 2025	Water
Ponderosa Bailey Creek	Snow Mountain Hydro LLC	Manton, CA	4 GWh	Feb 1990	Dec 2025	Water
POM Plant 2	Wonderful Renewable Energy, LLC.	Del Rey, CA	3 GWh	Nov 2021	Dec 2025	Solar
POM Plant 1	Wonderful Renewable Energy, LLC.	Del Rey, CA	5 GWh	Nov 2021	Dec 2025	Solar
POM Juice Solar	Wonderful Renewable Energy, LLC.	Fresno, CA	4 GWh	Jun 2021	Dec 2025	Solar
POM Beverage Solar	Wonderful Renewable Energy, LLC.	Del Rey, CA	4 GWh	Jun 2021	Dec 2025	Solar
Point Wind	Terra-Gen Operating Co-Wind	Tehachapi, CA	216 GWh	Feb 2021	May 2026	Wind
Poe	Pacific Gas & Electric Co.	Storrie, CA	363 GWh	Sep 1958	Mar 2026	Water
Plant No 2 Orange County	Orange County Sanitation Dist - (CA)	Huntington Beach, CA	47 GWh	May 1993	Dec 2025	Other Biomass Gas : 77.2% Natural Gas : 22.8%
Plant No 1 Orange County	Orange County Sanitation Dist - (CA)	Fountain Valley, CA	41 GWh	May 1993	Dec 2025	Other Biomass Gas : 81.6% Natural Gas : 18.4%
Pixar - Emeryville	Bloom Energy	Emeryville, CA	7 GWh	Dec 2013	Dec 2025	Natural Gas
Pivot Energy PPA 22	Pivot Energy	Visalia, CA	2 GWh	Sep 2024	Dec 2025	Solar
Pit 7	Pacific Gas & Electric Co.	Montgomery Creek, CA	376 GWh	Aug 1965	May 2026	Water
Pit 6	Pacific Gas & Electric Co.	Montgomery Creek, CA	262 GWh	Jul 1965	Dec 2025	Water
Pit 5	Pacific Gas & Electric Co.	Big Bend, CA	456 GWh	Mar 1944	Feb 2026	Water
Pit 4	Pacific Gas & Electric Co.	Big Bend, CA	349 GWh	Jun 1955	May 2026	Water
Pit 3	Pacific Gas & Electric Co.	Burney, CA	375 GWh	Jun 1925	Dec 2025	Water
Pit 1	Pacific Gas & Electric Co.	Burney, CA	256 GWh	Aug 1922	Dec 2025	Water
Pio Pico Energy Center	Pio Pico Energy Center LLC	San Diego, CA	47 GWh	Oct 2016	Dec 2025	Natural Gas
Pinyon Pine II	Pinyon Pines Wind II, LLC	Mojave, CA	204 GWh	Oct 2012	Dec 2025	Wind
Pinyon Pine I	Pinyon Pines Wind I, LLC	Mojave, CA	283 GWh	Oct 2012	Dec 2025	Wind
Pine Flat	Kings River Conservation Dist	Piedra, CA	353 GWh	Dec 1983	May 2026	Water
Phoenix Wind Power LLC	Avangrid Power LLC	North Palm Springs, CA	5 GWh	May 1999	Dec 2025	Wind
Phoenix	Pacific Gas & Electric Co.	Sonora, CA	5 GWh	Jan 1940	Dec 2025	Water
PFMG Solar Grossmont Helix LLC	Altus Power America Management, LLC	La Mesa, CA	2 GWh	Apr 2018	Dec 2025	Solar
Pebbly Beach Generating Station Hybrid	Southern California Edison Co	Avalon, CA	28 GWh	Jun 1958	May 2026	Distillate Fuel Oil : 95.0% Gaseous Propane : 5.0%
PE Berkeley	Berkeley Cogeneration Facility	Berkeley, CA	147 GWh	May 1987	May 2026	Natural Gas
Paulsell	Crow Creek Solar, LLC	Crows Landing, CA	47 GWh	May 2024	May 2026	Solar
Pastoria Energy Facility, LLC	Calpine Corp - Pastoria Energy Center	Lebec, CA	3 TWh	Apr 2005	May 2026	Natural Gas
Paso Robles - Municipal Airport	Onyx Asset Services Group	Paso Robles, CA	8 GWh	Dec 2023	Dec 2025	Solar
Parnassus Central Utility Plant	University of California-San Francisco	San Francisco, CA	67 GWh	Dec 1995	May 2026	Natural Gas
Parker	Merced Irrigation District	Snelling, CA	6 GWh	Mar 1982	Jun 2025	Water
Park Meridian #1	Altus Power America Management, LLC	Riverside, CA	3 GWh	Feb 2015	Dec 2025	Solar
Pardee	East Bay Municipal Util Dist - (CA)	Valley Springs, CA	80 GWh	Jun 1930	Dec 2025	Water
Panoche Valley Solar Farm	RWE Clean Energy	Paicines, CA	240 GWh	Dec 2017	May 2026	Solar
Panoche Energy Center	Panoche Energy Center, LLC	Firebaugh, CA	652 GWh	May 2009	May 2026	Natural Gas
Palomar Energy	San Diego Gas & Electric Co	Escondido, CA	1 TWh	Sep 2005	May 2026	Natural Gas
Palo Verde College	Scale Sustainable I, LLC	Blythe, CA	2 GWh	Jul 2009	Dec 2024	Solar
Palm Springs DAC PV	Palm Springs USD	Palm Springs, CA	1 GWh	Mar 2021	Dec 2025	Solar
Painted Hills Wind Park	Terra-Gen Operating Co-Wind	Whitewater, CA	158 GWh	Oct 1985	May 2026	Wind
Pacific Wind LLC	EDF Renewable Asset Holdings, Inc.	Rosamond, CA	295 GWh	Jul 2012	Dec 2025	Wind
Pacific-Ultrapower Chinese Station	IHI Power Services Corp	Jamestown, CA	102 GWh	Sep 1986	May 2026	Wood/Wood Waste Solids : 98.5% Gaseous Propane : 1.5%
Pacific Ethanol Madera Solar Array	Seaboard Energy California, LLC	Madera, CA	4 GWh	Jul 2018	Dec 2025	Solar
P66 Rodeo Solar	P66 Rodeo Solar	Rodeo, CA	58 GWh	Mar 2023	May 2026	Solar
Oxnard Wastewater Treatment Plant	City of Oxnard - (CA)	Oxnard, CA	3 GWh	Jul 1981	May 2026	Other Biomass Gas : 97.6% Natural Gas : 2.4%
Oxnard Paper Mill	New-Indy, Oxnard LLC	Oxnard, CA	150 GWh	Feb 1986	May 2026	Natural Gas
Oxnard	Procter&Gamble Paper Products Co-Oxnard	Oxnard, CA	425 GWh	Jun 1982	May 2026	Natural Gas
Oxbow (CA)	Placer County Water Agency - (CA)	Foresthill, CA	23 GWh	Sep 1966	Dec 2025	Water
Otoe Solar Power Generation Station 1 LL	AES Distributed Energy	Apple Valley, CA	3 GWh	Nov 2013	Dec 2025	Solar
Otay Mesa Generating Project	Otay Mesa Energy Center LLC	San Diego, CA	1 TWh	Sep 2009	May 2026	Natural Gas
Oroville Cogeneration, LLC	Apex Power Generation Corp.	Oroville, CA	116 MWh	Dec 1989	Dec 2025	Natural Gas
Oro Loma	RWE Clean Energy	Oro Loma, CA	49 GWh	Dec 2016	Dec 2025	Solar
Ormond Beach	Ormond Beach Power, LLC	Oxnard, CA	5 GWh	Jul 1971	May 2026	Natural Gas
Orion Solar II	Orion Solar II, LLC	Arvin, CA	16 GWh	May 2014	Dec 2025	Solar
Orion Solar I	Orion Solar I LLC	Arvin, CA	27 GWh	Mar 2014	Dec 2025	Solar
Orange Grove Peaking Facility	Orange Grove Energy LP	Pala, CA	9 GWh	May 2010	Dec 2025	Natural Gas
Orange Coast College PH2 Solar Project	Solar Star Coastal Pirate, LLC	Costa Mesa, CA	4 GWh	Apr 2022	Dec 2025	Solar
Open Sky Ranch Inc	Bravo REC Management LLC	Riverdale, CA	4 GWh	Jun 2024	Dec 2025	Solar
Open Sky Dairy	Renewable Solar, Inc	Riverdale, CA	419 MWh	Jun 2024	Dec 2025	Solar
One Ten Partners PV	One Ten Partners, LLC	Palmdale, CA	6 GWh	Aug 2017	Dec 2025	Solar
One Market Plaza	Paramount Group Inc	San Francisco, CA	1 GWh	Nov 2003	Dec 2025	Natural Gas
Oltmans SCE at Jurupa	California PV Energy LLC	Ontario, CA	2 GWh	Nov 2013	Dec 2025	Solar
Oltmans SCE at Champagne	California PV Energy LLC	Ontario, CA	2 GWh	Nov 2013	Dec 2025	Solar
Olsen	Olsen Power Partners	Whitmore, CA	15 GWh	Dec 1989	Dec 2025	Water
OK Produce Fresno Carport	OK Produce	Fresno, CA	3 GWh	Dec 2018	Dec 2025	Solar
OES Biogas Power	Organic Energy Solutions, Inc.	San Bernardino, CA	5 GWh	-	Dec 2024	Other Biomass Gas

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