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 Nov 2025
Annual Generation 188.0 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 | 43.1% Solar | 26.4% Water | 11.1% Wind | 10.6% Nuclear | 9.4%

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

List of All California Independent System Operator Power Plants

Displaying Results 1 to 100 of 1,387
Plant NameUtilityLocationAnnual GenerationPlant DateLast UpdateFuel Types
Chaparral SpringsLeeward Asset Management, LLCRosamond, CA428 GWh-Sep 2025 Solar
Electrolyte BESSHenrietta BESS LLCLemoore, CA6 GWh-Sep 2025 Electricity used for energy storage
Rexford Solar FarmAES Clean EnergyDucor, CA559 GWh-Sep 2025 Solar
Rosamond South 1Golden Fields Solar IV, LLCRosamond, CA36 GWh-Aug 2025 Solar
OES Biogas PowerOrganic Energy Solutions, Inc.San Bernardino, CA5 GWh-Dec 2024 Other Biomass Gas
AM Wind Repower LLCBrookfield Renewable Trading and Marketing LPWhitewater, CA67 GWh-Sep 2025 Wind
Northern Orchard Solar PV, LLCNorthern Orchard Solar PV, LLCTaft, CA133 GWh-Sep 2025 Solar
Camino Solar HybridAvangrid Power LLCRosamond, CA80 GWh-Sep 2025 Solar
Luna ValleyLuna Valley Solar I, LLCMendota, CA68 GWh-Sep 2025 Solar
Alta PowerhousePacific Gas & Electric Co.Alta, CA1 GWhOct 1902Dec 2024 Water
Mill Creek 3Southern California Edison CoMill Creek, CA11 GWhFeb 1903Dec 2024 Water
Bishop Creek 4Southern California Edison CoBishop, CA40 GWhAug 1905Dec 2024 Water
Kern River 1Southern California Edison CoBakersfield, CA192 GWhApr 1907Dec 2024 Water
Deer Creek PHNevada Irrigation DistrictNevada City, CA12 GWhApr 1908Dec 2024 Water
Bishop Creek 2Southern California Edison CoBishop, CA16 GWhOct 1908Dec 2024 Water
A G WishonPacific Gas & Electric Co.North Fork, CA22 GWhAug 1910Dec 2024 Water
LundySouthern California Edison CoLee Vining, CA7 GWhNov 1911Dec 2024 Water
Bishop Creek 6Southern California Edison CoBishop, CA10 GWhFeb 1913Dec 2024 Water
Bishop Creek 3Southern California Edison CoBishop, CA20 GWhMay 1913Dec 2024 Water
Drum 1Pacific Gas & Electric Co.Alta, CA46 GWhOct 1913Oct 2024 Water
Big Creek 1Southern California Edison CoBig Creek, CA405 GWhOct 1913Dec 2024 Water
Big Creek 2Southern California Edison CoAuberry, CA355 GWhNov 1913Dec 2024 Water
Rush CreekSouthern California Edison CoJune lake, CA43 GWhSep 1916Dec 2024 Water
HalseyPacific Gas & Electric Co.Auburn, CA8 GWhNov 1916Oct 2024 Water
WisePacific Gas & Electric Co.Auburn, CA31 GWhFeb 1917Oct 2024 Water
FontanaSouthern California Edison CoRialto, CA9 GWhNov 1917Dec 2024 Water
Bishop Creek 5Southern California Edison CoBishop, CA17 GWhMay 1919Sep 2024 Water
Kern River 3Southern California Edison CoKernville, CA143 GWhFeb 1921Dec 2024 Water
Caribou 1Pacific Gas & Electric Co.Belden, CA221 GWhMay 1921Dec 2024 Water
Hat Creek 1Pacific Gas & Electric Co.Burney, CA27 GWhJul 1921Dec 2024 Water
Big Creek 8Southern California Edison CoAuberry, CA174 GWhJul 1921Dec 2024 Water
Hat Creek 2Pacific Gas & Electric Co.Burney, CA26 GWhAug 1921Dec 2024 Water
Spring GapPacific Gas & Electric Co.Long Barn, CA30 GWhAug 1921Nov 2024 Water
Pit 1Pacific Gas & Electric Co.Burney, CA188 GWhAug 1922Dec 2024 Water
Big Creek 3Southern California Edison CoAuberry, CA598 GWhAug 1923Sep 2025 Water
El DoradoEl Dorado Irrigation DistrictPollock Pines, CA81 GWhDec 1923Dec 2024 Water
PooleSouthern California Edison CoLee Vining, CA23 GWhApr 1924Dec 2024 Water
Pit 3Pacific Gas & Electric Co.Burney, CA333 GWhJun 1925Dec 2024 Water
Balch 1Pacific Gas & Electric Co.Balch Camp, CA139 GWhJan 1927Dec 2024 Water
Bucks CreekPacific Gas & Electric Co.Storrie, CA96 GWhFeb 1928Mar 2024 Water
Spaulding 1Pacific Gas & Electric Co.Emigrant Gap, CA18 GWhApr 1928Dec 2024 Water
Big Creek 2ASouthern California Edison CoAuberry, CA211 GWhJul 1928Sep 2025 Water
Spaulding 3Pacific Gas & Electric Co.Emigrant Gap, CA16 GWhJan 1929Dec 2024 Water
Kaweah 2Southern California Edison CoThree Rivers, CA1 GWhAug 1929Dec 2024 Water
Merced FallsMerced Irrigation DistrictSnelling, CA9 GWhJun 1930Oct 2024 Water
PardeeEast Bay Municipal Util DistValley Springs, CA118 GWhJun 1930Dec 2024 Water
Salt SpringsPacific Gas & Electric Co.Pioneer, CA108 GWhMay 1931Dec 2024 Water
Tiger CreekPacific Gas & Electric Co.Pioneer, CA225 GWhMay 1931Dec 2024 Water
Humboldt Sawmill CompanyMendocino Forest ProductsScotia, CA110 GWhDec 1937Sep 2025 Wood/Wood Waste Solids : 99.8%
AngelsUtica Water & Power AuthorityAngels Camp, CA6 GWhDec 1939Dec 2024 Water
PhoenixPacific Gas & Electric Co.Sonora, CA8 GWhJan 1940Oct 2024 Water
Narrows PHYuba County Water AgencyGrass Valley, CA81 GWhNov 1942Dec 2024 Water
Dutch FlatPacific Gas & Electric Co.Alta, CA27 GWhFeb 1943Dec 2024 Water
Pit 5Pacific Gas & Electric Co.Big Bend, CA620 GWhMar 1944Sep 2025 Water
Argus Cogen PlantSearles Valley Minerals Operations Inc.Trona, CA252 GWhNov 1947Sep 2025 Bituminous Coal : 94.8% Natural Gas : 5.2%
ElectraPacific Gas & Electric Co.Jackson, CA228 GWhMay 1948Sep 2025 Water
West Point PHPacific Gas & Electric Co.Pioneer, CA89 GWhOct 1948Jun 2024 Water
CrestaPacific Gas & Electric Co.Storrie, CA338 GWhOct 1949Dec 2024 Water
Rock CreekPacific Gas & Electric Co.Storrie, CA610 GWhFeb 1950Sep 2025 Water
Big Creek 4Southern California Edison CoNorth Fork, CA322 GWhMay 1951Sep 2025 Water
SJ/SC WPCPSan Jose/Santa Clara Water P CSan Jose, CA84 GWhJan 1953Sep 2025 Natural Gas : 51.6% Other Biomass Gas : 48.3%
MurphysUtica Water & Power AuthorityMurphys, CA15 GWhFeb 1954Dec 2024 Water
AES Redondo Beach LLCAES Redondo Beach LLCRedondo Beach, CA256 GWhSep 1954Dec 2023 Natural Gas
Pit 4Pacific Gas & Electric Co.Big Bend, CA399 GWhJun 1955Sep 2025 Water
AES Alamitos LLCAES Alamitos LLCLong Beach, CA38 GWhAug 1956Aug 2025 Natural Gas
PortalSouthern California Edison CoLakeshore, CA19 GWhNov 1956Dec 2024 Water
BeardsleyOakdale&South San Joaquin Irrigation D.None, CA56 GWhApr 1957Dec 2024 Water
DonnellsOakdale&South San Joaquin Irrigation D.None, CA219 GWhMay 1957Dec 2024 Water
C&H Sugar PlantC&H Sugar Company IncCrockett, CA32 GWhSep 1957Sep 2025 Purchased Steam
AES Huntington Beach LLCAES Huntington Beach LLCHuntington Beach, CA8 GWhMay 1958Aug 2025 Natural Gas
TullochOakdale&South San Joaquin Irrigation D.Jamestown, CA104 GWhMay 1958Dec 2024 Water
Pebbly Beach Generating Station HybridSouthern California Edison CoAvalon, CA29 GWhJun 1958Sep 2025 Distillate Fuel Oil : 94.5% Gaseous Propane : 5.5%
PoePacific Gas & Electric Co.Storrie, CA312 GWhSep 1958Sep 2025 Water
Balch 2Pacific Gas & Electric Co.Balch Camp, CA443 GWhOct 1958Dec 2024 Water
Caribou 2Pacific Gas & Electric Co.Belden, CA364 GWhOct 1958Sep 2025 Water
Butt ValleyPacific Gas & Electric Co.Belden, CA149 GWhNov 1958Dec 2024 Water
HaasPacific Gas & Electric Co.Balch Camp, CA220 GWhNov 1958Aug 2025 Water
Mammoth PoolSouthern California Edison CoNorth Fork, CA383 GWhFeb 1960Sep 2025 Water
Dion R HolmCity & County of San FranciscoGroveland, CA466 GWhJul 1960Sep 2025 Water
Kings River PHPacific Gas & Electric Co.Balch Camp, CA107 GWhFeb 1962Dec 2024 Water
De SablaPacific Gas & Electric Co.Magalia, CA23 GWhJan 1963Dec 2024 Water
StanislausPacific Gas & Electric Co.Vallecito, CA316 GWhFeb 1963Oct 2024 Water
Kelly RidgeSouth Feather Water and Power AgencyOroville, CA67 GWhAug 1963Dec 2024 Water
ForbestownSouth Feather Water and Power AgencyForbestown, CA129 GWhSep 1963Dec 2024 Water
WoodleafSouth Feather Water and Power AgencyForbestown, CA194 GWhOct 1963Dec 2024 Water
Chili BarSacramento Municipal Util DistPlacerville, CA33 GWhFeb 1965Dec 2024 Water
Pit 6Pacific Gas & Electric Co.Montgomery Creek, CA242 GWhJul 1965Dec 2024 Water
Pit 7Pacific Gas & Electric Co.Montgomery Creek, CA441 GWhAug 1965Sep 2025 Water
Chicago ParkNevada Irrigation DistrictColfax, CA60 GWhOct 1965Dec 2024 Water
Dutch Flat 2Nevada Irrigation DistrictDutch Flat, CA15 GWhOct 1965Dec 2024 Water
Drum 2Pacific Gas & Electric Co.Alta, CA149 GWhNov 1965Dec 2024 Water
James B BlackPacific Gas & Electric Co.Big Bend, CA597 GWhNov 1965Sep 2025 Water
French MeadowsPlacer County Water AgencyForesthill, CA51 GWhSep 1966Dec 2024 Water
Middle ForkPlacer County Water AgencyForesthill, CA365 GWhSep 1966Sep 2025 Water
Oxbow (CA)Placer County Water AgencyForesthill, CA29 GWhSep 1966Sep 2024 Water
RalstonPlacer County Water AgencyForesthill, CA328 GWhSep 1966Dec 2024 Water
R C KirkwoodCity & County of San FranciscoGroveland, CA404 GWhJan 1967Sep 2025 Water
ExchequerMerced Irrigation DistrictSnelling, CA268 GWhJun 1967Dec 2024 Water
McSwainMerced Irrigation DistrictSnelling, CA32 GWhJun 1967Dec 2024 Water
Dynegy Moss Landing Power Plant HybridDynegy -Moss Landing LLCMoss Landing, CA3 TWhNov 1967Sep 2025 Natural Gas

Balancing Authorities with Similar Net Generation

RankBalancing AuthorityAnnual Net Generation# Power Plants
#4Electric Reliability Council of Texas, Inc.485.0 TWh1,313
#5Southwest Power Pool299.9 TWh835
#6Southern Company Services, Inc. - Trans250.9 TWh417
#7California Independent System Operator188.0 TWh2,075
#9Tennessee Valley Authority161.6 TWh204
#10Florida Power & Light Co.148.9 TWh187
#12New York Independent System Operator131.6 TWh1,211
#13Duke Energy Carolinas112.5 TWh565
#15ISO New England105.5 TWh1,577
#16Bonneville Power Administration80.5 TWh163