2. Balancing Authorities
  3. California Independent System Operator

California Independent System Operator

Balancing Authority Summary Information

California Independent System Operator is ranked #7 out of 65 balancing authorities in terms of total annual electricity generation.

Balancing AuthorityCalifornia Independent System Operator
States Arizona California Nevada
Last Update Oct 2025
Annual Generation 188.7 TWh
Power Plants2,075
Utilities965
Ranked #7 out of 65 in terms of net annual generation
Ranked #7 out of 53 in terms of annual generation from natural gas
Power Plant Types Natural Gas | 43% Solar | 26.2% Water | 10.9% Wind | 10.9% Nuclear | 9.8%

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

1M1M800k800k600k600k400k400k200k200k0020232023Jul '23Jul '2320242024Jul '24Jul '2420252025Jul '25Jul '25
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List of All California Independent System Operator Power Plants

Displaying Results 401 to 500 of 1,387
Plant NameUtilityLocationAnnual GenerationPlant DateLast UpdateFuel Types
Pinyon Pine IIPinyon Pines Wind II, LLCMojave, CA233 GWhOct 2012Dec 2024 Wind
Pinyon Pine IPinyon Pines Wind I, LLCMojave, CA307 GWhOct 2012Dec 2024 Wind
Phillips 66 Rodeo RefineryPhillips 66 CompanyRodeo, CA291 GWhApr 1987Aug 2024 Other Gas : 72.8% Natural Gas : 27.2%
Sheep Creek Community Solar FarmPhelan Solar LLCEl Mirage, CA6 GWhJul 2023Dec 2024 Solar
Hollister Wastewater FacilityPerpetual Energy SystemsHollister, CA2 GWhOct 2011Dec 2024 Solar
ASTIPerpetual Energy SystemsCloverdale, CA1 GWhJan 2009Dec 2024 Solar
BeringerPerpetual Energy SystemsSaint Helena, CA1 GWhDec 2008Dec 2024 Solar
Ocotillo Express LLCPattern Operators LPOcotillo, CA484 GWhNov 2012Jul 2025 Wind
Hatchet Ridge Wind ProjectPattern Operators LPBurney, CA268 GWhNov 2010Dec 2024 Wind
One Market PlazaParamount Group IncSan Francisco, CA177 MWhNov 2003Dec 2024 Natural Gas
Panoche Energy CenterPanoche Energy Center, LLCFirebaugh, CA961 GWhMay 2009Jul 2025 Natural Gas
Dissigno Healdsburg FPV, LLCPalmetto Power Management LLCHealdsburg, CA6 GWhNov 2020Dec 2024 Solar
Municipal Cogen PlantPalm Springs City ofPalm Springs, CA7 GWhApr 1985Jul 2025 Natural Gas
Tipton 2 - (CA)Pacifico PowerTipton, CA83 MWhNov 2024Dec 2024 Solar
Tipton 1 - (CA)Pacifico PowerTipton, CA167 MWhNov 2024Dec 2024 Solar
Spring GapPacific Gas & Electric Co.Long Barn, CA30 GWhAug 1921Nov 2024 Water
West Point PHPacific Gas & Electric Co.Pioneer, CA89 GWhOct 1948Jun 2024 Water
SouthPacific Gas & Electric Co.Manton, CA13 GWhNov 1979Dec 2024 Water
Spaulding 3Pacific Gas & Electric Co.Emigrant Gap, CA16 GWhJan 1929Dec 2024 Water
Salt SpringsPacific Gas & Electric Co.Pioneer, CA108 GWhMay 1931Dec 2024 Water
StanislausPacific Gas & Electric Co.Vallecito, CA316 GWhFeb 1963Oct 2024 Water
Tiger CreekPacific Gas & Electric Co.Pioneer, CA225 GWhMay 1931Dec 2024 Water
WisePacific Gas & Electric Co.Auburn, CA31 GWhFeb 1917Oct 2024 Water
Spaulding 1Pacific Gas & Electric Co.Emigrant Gap, CA18 GWhApr 1928Dec 2024 Water
A G WishonPacific Gas & Electric Co.North Fork, CA22 GWhAug 1910Dec 2024 Water
West Gates Solar StationPacific Gas & Electric Co.Huron, CA19 GWhApr 2013Dec 2024 Solar
Gates Solar StationPacific Gas & Electric Co.Huron, CA32 GWhMay 2013Dec 2024 Solar
Guernsey Solar StationPacific Gas & Electric Co.Hanford, CA23 GWhJul 2013Dec 2024 Solar
NewcastlePacific Gas & Electric Co.Auburn, CA7 GWhNov 1986Dec 2024 Water
Kerckhoff 2Pacific Gas & Electric Co.Auberry, CA393 GWhApr 1983Jul 2025 Water
ToadtownPacific Gas & Electric Co.Magalia, CA2 GWhMar 1986Oct 2024 Water
Diablo CanyonPacific Gas & Electric Co.Avila Beach, CA18 TWhApr 1985Jul 2025 Nuclear
Huron Solar StationPacific Gas & Electric Co.Huron, CA29 GWhMay 2012Dec 2024 Solar
Cantua Solar StationPacific Gas & Electric Co.TBD, CA31 GWhMay 2012Dec 2024 Solar
GiffenPacific Gas & Electric Co.TBD, CA14 GWhMay 2012Dec 2024 Solar
Westside Solar StationPacific Gas & Electric Co.Five Points, CA14 GWhJul 2011Dec 2024 Solar
Five Points Solar StationPacific Gas & Electric Co.Five Points, CA15 GWhAug 2011Dec 2024 Solar
Stroud Solar StationPacific Gas & Electric Co.Helm, CA25 GWhAug 2011Oct 2024 Solar
Vaca Dixon Solar StationPacific Gas & Electric Co.Vacaville, CA3 GWhNov 2009Dec 2024 Solar
Colusa Generating StationPacific Gas & Electric Co.Maxwell, CA3 TWhNov 2010Jul 2025 Natural Gas
Gateway Generating StationPacific Gas & Electric Co.Antioch, CA3 TWhDec 2008Jul 2025 Natural Gas
Drum 1Pacific Gas & Electric Co.Alta, CA46 GWhOct 1913Oct 2024 Water
Pit 1Pacific Gas & Electric Co.Burney, CA188 GWhAug 1922Dec 2024 Water
PhoenixPacific Gas & Electric Co.Sonora, CA8 GWhJan 1940Oct 2024 Water
Kings River PHPacific Gas & Electric Co.Balch Camp, CA107 GWhFeb 1962Dec 2024 Water
James B BlackPacific Gas & Electric Co.Big Bend, CA583 GWhNov 1965Jul 2025 Water
Humboldt BayPacific Gas & Electric Co.Eureka, CA342 GWhAug 2010Jul 2025 Natural Gas : 99.6%
Hat Creek 2Pacific Gas & Electric Co.Burney, CA26 GWhAug 1921Dec 2024 Water
Hat Creek 1Pacific Gas & Electric Co.Burney, CA27 GWhJul 1921Dec 2024 Water
HalseyPacific Gas & Electric Co.Auburn, CA8 GWhNov 1916Oct 2024 Water
HaasPacific Gas & Electric Co.Balch Camp, CA284 GWhNov 1958Jul 2025 Water
ElectraPacific Gas & Electric Co.Jackson, CA227 GWhMay 1948Jul 2025 Water
Dutch FlatPacific Gas & Electric Co.Alta, CA27 GWhFeb 1943Dec 2024 Water
Drum 2Pacific Gas & Electric Co.Alta, CA149 GWhNov 1965Dec 2024 Water
PoePacific Gas & Electric Co.Storrie, CA292 GWhSep 1958Jul 2025 Water
De SablaPacific Gas & Electric Co.Magalia, CA23 GWhJan 1963Dec 2024 Water
CrestaPacific Gas & Electric Co.Storrie, CA338 GWhOct 1949Dec 2024 Water
Coleman PHPacific Gas & Electric Co.Anderson, CA27 GWhMay 1979Dec 2024 Water
Caribou 2Pacific Gas & Electric Co.Belden, CA340 GWhOct 1958Jul 2025 Water
Caribou 1Pacific Gas & Electric Co.Belden, CA221 GWhMay 1921Dec 2024 Water
Butt ValleyPacific Gas & Electric Co.Belden, CA149 GWhNov 1958Dec 2024 Water
Bucks CreekPacific Gas & Electric Co.Storrie, CA96 GWhFeb 1928Mar 2024 Water
BeldenPacific Gas & Electric Co.Belden, CA188 GWhAug 1969Jul 2025 Water
Balch 2Pacific Gas & Electric Co.Balch Camp, CA443 GWhOct 1958Dec 2024 Water
Balch 1Pacific Gas & Electric Co.Balch Camp, CA139 GWhJan 1927Dec 2024 Water
Alta PowerhousePacific Gas & Electric Co.Alta, CA1 GWhOct 1902Dec 2024 Water
Volta 2Pacific Gas & Electric Co.Manton, CA3 GWhOct 1981Dec 2024 Water
Pit 3Pacific Gas & Electric Co.Burney, CA333 GWhJun 1925Dec 2024 Water
Pit 4Pacific Gas & Electric Co.Big Bend, CA393 GWhJun 1955Jul 2025 Water
Pit 5Pacific Gas & Electric Co.Big Bend, CA654 GWhMar 1944Jul 2025 Water
Pit 6Pacific Gas & Electric Co.Montgomery Creek, CA242 GWhJul 1965Dec 2024 Water
Pit 7Pacific Gas & Electric Co.Montgomery Creek, CA435 GWhAug 1965Jul 2025 Water
Rock CreekPacific Gas & Electric Co.Storrie, CA612 GWhFeb 1950Jul 2025 Water
P66 Rodeo SolarP66 Rodeo SolarRodeo, CA17 GWhMar 2023Jul 2025 Solar
Oxnard Wastewater Treatment PlantOxnard City ofOxnard, CA4 GWhJul 1981Jul 2025 Other Biomass Gas : 94.8% Natural Gas : 5.2%
Otay Mesa Generating ProjectOtay Mesa Energy Center LLCSan Diego, CA2 TWhSep 2009Jul 2025 Natural Gas
Ormond BeachOrmond Beach Power, LLCOxnard, CA45 GWhJul 1971Jul 2025 Natural Gas
Dixie ValleyOrmat Nevada IncFallon, NV341 GWhMay 1988Jul 2025 Geothermal
Mammoth G3Ormat Nevada IncMammoth Lakes, CA103 GWhNov 1990Dec 2024 Geothermal
Mammoth G1Ormat Nevada IncMammoth lakes, CA60 GWhNov 1984Dec 2024 Geothermal
Mammoth G2Ormat Nevada IncMammoth Lakes, CA82 GWhNov 1990Dec 2024 Geothermal
Orion Solar IIOrion Solar II, LLCArvin, CA19 GWhMay 2014Dec 2024 Solar
Orion Solar IOrion Solar I LLCArvin, CA28 GWhMar 2014Dec 2024 Solar
OES Biogas PowerOrganic Energy Solutions, Inc.San Bernardino, CA5 GWh-Dec 2024 Other Biomass Gas
Orange Grove Peaking FacilityOrange Grove Energy LPPala, CA24 GWhMay 2010Dec 2024 Natural Gas
Kings River SyphonOrange Cove Irrigation DistrictSanger, CA325 MWhAug 1990May 2024 Water
Plant No 1 Orange CountyOrange County Sanitation DistFountain Valley, CA40 GWhMay 1993Dec 2024 Other Biomass Gas : 80.1% Natural Gas : 19.9%
Plant No 2 Orange CountyOrange County Sanitation DistHuntington Beach, CA59 GWhMay 1993Dec 2024 Other Biomass Gas : 73.7% Natural Gas : 26.0%
Paso Robles - Municipal AirportOnyx Asset Services GroupPaso Robles, CA6 GWhDec 2023Dec 2024 Solar
SeaWorld AquaticaOnyx Asset Services GroupChula Vista, CA2 GWhApr 2018Dec 2024 Solar
Cottonwood Solar, LLC Cottonwood CarportOnward EnergyNovato, CA2 GWhApr 2016Dec 2024 Solar
RE Columbia Two, LLCOnward EnergyMojave, CA40 GWhNov 2014Dec 2024 Solar
RE Kent South, LLCOnward EnergyLemoore, CA44 GWhNov 2014Dec 2024 Solar
Cottonwood Solar, LLC (City of Corcoran)Onward EnergyCorcoran, CA23 GWhApr 2015Dec 2024 Solar
Cottonwood Solar, LLC (Goose Lake)Onward EnergyLost Hills, CA32 GWhApr 2015Dec 2024 Solar
Maricopa West Solar PV, LLCOnward EnergyTaft, CA48 GWhNov 2015Dec 2024 Solar
TA-Acacia, LLCOnward EnergyLancaster, CA52 GWhOct 2014Dec 2024 Solar
Alamo SolarOnward EnergyOro Grande, CA48 GWhApr 2015Dec 2024 Solar
RE Old River One, LLCOnward EnergyBakersfield, CA36 GWhNov 2014Dec 2024 Solar
Catalina Solar 2, LLCOnward EnergyRosamond, CA53 GWhJul 2015Dec 2024 Solar

Surrounding Balancing Authorities

RankBalancing AuthorityAnnual Net Generation# Power Plants
#27Arizona Public Service Company23.4 TWh92
#54Arlington Valley, LLC3.4 TWh1
#35Balancing Authority of Northern California15.0 TWh87
#48Imperial Irrigation District6.2 TWh66
#31Los Angeles Department of Water and Power18.6 TWh124
#22Nevada Power Company37.1 TWh139
#60New Harquahala Generating Company, LLC1.2 TWh1
#18Salt River Project Agricultural Improvement and Power District60.5 TWh48
#57Turlock Irrigation District2.1 TWh11
#39Western Area Power Administration - Desert Southwest Region9.8 TWh33

Balancing Authorities with Similar Net Generation

RankBalancing AuthorityAnnual Net Generation# Power Plants
#3Electric Reliability Council of Texas, Inc.482.3 TWh1,313
#5Southwest Power Pool298.0 TWh835
#6Southern Company Services, Inc. - Trans249.8 TWh417
#7California Independent System Operator188.7 TWh2,075
#8Tennessee Valley Authority160.6 TWh204
#10Florida Power & Light Co.148.9 TWh187
#12New York Independent System Operator131.6 TWh1,211
#13Duke Energy Carolinas112.0 TWh565
#14ISO New England104.0 TWh1,577
#16Bonneville Power Administration79.9 TWh163