Directory of Power Plants in the United States

List of All United States Power Plants

Displaying Results 1 to 100 of 338
Plant NameUtilityLocationBalancing AuthorityAnnual GenerationPlant DateLast UpdateFuel Types
Oak Grove (TX)Luminant Generation Company LLCFranklin, TXElectric Reliability Council of Texas, Inc. (ERCO)11.0 TWhMar 2010Sep 2025 Lignite Coal : 99.0% Natural Gas : 1.0%
Oak Ridge SolarAES Clean EnergyOak Ridge, LAMidcontinent Independent System Operator, Inc. (MISO)422.4 GWhNov 2023Sep 2025 Solar
Oak SolarOak Solar LLCGaston, NCPJM Interconnection, LLC (PJM)259.8 GWhNov 2023Sep 2025 Solar
Oak Trail Solar, LLCLeeward Asset Management, LLCMoyock, NCPJM Interconnection, LLC (PJM)238.0 GWhJun 2023Sep 2025 Solar
Oakfield Wind ProjectOnward EnergyCity of Oakfield, MEISO New England (ISNE)367.0 GWhSep 2015Sep 2025 Wind
Oberon IAOberon Solar IAOdessa, TXElectric Reliability Council of Texas, Inc. (ERCO)306.3 GWhJun 2020Sep 2025 Solar
Oberon IBOberon Solar IBOdessa, TXElectric Reliability Council of Texas, Inc. (ERCO)61.4 GWhJun 2020Sep 2025 Solar
Oberon II Solar ProjectIP Oberon II, LLCDesert Center, CACalifornia Independent System Operator (CISO)598.4 GWhAug 2023Sep 2025 Solar
Oberon Solar ProjectIP Oberon LLCDesert Center, CACalifornia Independent System Operator (CISO)581.0 GWhAug 2023Sep 2025 Solar
OconeeDuke Energy Carolinas, LLCSeneca, SCDuke Energy Carolinas (DUK)22.6 TWhJun 1973Sep 2025 Nuclear
OcotilloArizona Public Service CoTempe, AZArizona Public Service Company (AZPS)473.2 GWhFeb 1960Sep 2025 Natural Gas
Ocotillo Express LLCPattern Operators LPOcotillo, CACalifornia Independent System Operator (CISO)461.7 GWhNov 2012Sep 2025 Wind
Ocotillo WellsConductive PowerBorrego Springs, CACalifornia Independent System Operator (CISO)108.6 GWhAug 2023Sep 2025 Solar
Odessa-Ector Power PlantLaFrontera Holdings LLCOdessa, TXElectric Reliability Council of Texas, Inc. (ERCO)7.9 TWhJun 2001Sep 2025 Natural Gas
Odyssey Energy Altura Cogen, LLCOdyssey Operating ServicesChannelview, TXElectric Reliability Council of Texas, Inc. (ERCO)3.7 TWhOct 1985Sep 2025 Natural Gas
OE_AZ1Onward EnergySalome, AZWestern Area Power Administration - Desert Southwest Region (WALC)83.2 GWhNov 2019Sep 2025 Solar
OE_GA3Onward EnergyCamilla, GASouthern Company Services, Inc. - Trans (SOCO)126.6 GWhNov 2019Sep 2025 Solar
OETN1OE_TN1Obion, TNTennessee Valley Authority (TVA)164.0 GWhFeb 2023Sep 2025 Solar
Ohio Northern University Solar SiteAEP Onsite Partners, LLCAda, OHPJM Interconnection, LLC (PJM)4.0 GWhNov 2016Sep 2025 Solar
Okeechobee Clean Energy CenterFlorida Power & Light CoOkeechobee, FLFlorida Power & Light Co. (FPL)11.7 TWhFeb 2019Sep 2025 Natural Gas
Okeechobee SolarFlorida Power & Light CoVero Beach, FLFlorida Power & Light Co. (FPL)146.2 GWhMar 2020Sep 2025 Solar
Okeelanta CogenerationNew Hope Power CompanySouth Bay, FLFlorida Power & Light Co. (FPL)51.4 GWhDec 1995Sep 2025 Agricultural By-Products : 97.8% Natural Gas : 2.2%
Old 300 Solar Center, LLCOld 300 Solar Center, LLCNeedville, TXElectric Reliability Council of Texas, Inc. (ERCO)984.2 GWhSep 2024Sep 2025 Solar
Old Settler WindOld Settler Wind, LLCFloydada, TXElectric Reliability Council of Texas, Inc. (ERCO)539.5 GWhMar 2017Sep 2025 Wind
Old Trail Wind FarmOld Trail Wind Farm LLCEllsworth, ILPJM Interconnection, LLC (PJM)565.4 GWhNov 2007Sep 2025 Wind
OlivePVIndiana Michigan Power CoNew Carlisle, INPJM Interconnection, LLC (PJM)8.5 GWhJul 2016Sep 2025 Solar
Oliver Wind III, LLCOliver Wind III, LLCMandan, NDMidcontinent Independent System Operator, Inc. (MISO)380.9 GWhDec 2016Sep 2025 Wind
Oliver Wind IVOliver Wind IV, LLCHannover, NDSouthwest Power Pool (SWPP)604.8 GWhNov 2024Sep 2025 Wind
Omega Hills Gas RecoveryWM Renewable Energy LLCGermantown, WIMidcontinent Independent System Operator, Inc. (MISO)80.1 GWhNov 1985Sep 2025 Landfill Gas
Oneta Energy CenterOneta Power LLCBroken Arrow, OKSouthwest Power Pool (SWPP)5.1 TWhJun 2002Sep 2025 Natural Gas
Onion RiverWisconsin Power & Light CoSheboygan Cedar Grove, WIMidcontinent Independent System Operator, Inc. (MISO)252.6 GWhNov 2023Sep 2025 Solar
Onondaga County Resource RecoveryCovanta Onondega LPJamesville, NYNew York Independent System Operator (NYIS)206.3 GWhOct 1994Sep 2025 Non-biogenic Municipal Solid Waste : 54.5% Biogenic Municipal Solid Waste : 44.6% Natural Gas : 0.9%
Ontelaunee Energy CenterOntelaunee Energy CenterReading, PAPJM Interconnection, LLC (PJM)4.1 TWhApr 2002Sep 2025 Natural Gas
Open Range Solar Center, LLCCypress Creek RenewablesNyssa, ORIdaho Power Company (IPCO)21.3 GWhAug 2016Sep 2025 Solar
Opryland USAGaylord Entertainment CoNashville, TNTennessee Valley Authority (TVA)6.6 GWhJun 1995Sep 2025 Natural Gas
Orange Blossom Solar CenterFlorida Power & Light CoVero Beach, FLFlorida Power & Light Co. (FPL)147.7 GWhApr 2021Sep 2025 Solar
Orange GroveOrange GroveJim Wells, TXElectric Reliability Council of Texas, Inc. (ERCO)112.9 GWh-Sep 2025 Solar
OrchardFlorida Power & Light CoFt. Pierce, FLFlorida Power & Light Co. (FPL)157.5 GWhDec 2023Sep 2025 Solar
Orchard ParkBorough of ChambersburgChambersburg, PAPJM Interconnection, LLC (PJM)41.0 GWhNov 2003Sep 2025 Natural Gas : 94.9% Distillate Fuel Oil : 5.1%
Orchard Ranch SolarOrchard Ranch Solar, LLCOrchard, IDIdaho Power Company (IPCO)45.1 GWhFeb 2017Sep 2025 Solar
OREG 1 IncOrmat Nevada IncCulbertson, MTSouthwest Power Pool (SWPP)143.8 GWhJun 2006Sep 2025 Waste Heat
OREG 2 IncOrmat Nevada IncCulbertson, MTSouthwest Power Pool (SWPP)118.7 GWhNov 2008Sep 2025 Waste Heat
OREG 3 IncOrmat Nevada IncTrimont, MNMidcontinent Independent System Operator, Inc. (MISO)43.1 GWhJul 2010Sep 2025 Waste Heat
Oregon Clean Energy CenterOregon Clean Energy CenterOregon, OHPJM Interconnection, LLC (PJM)5.9 TWhJun 2017Sep 2025 Natural Gas
Oriana Solar LLCOriana Solar LLCVictoria, TXElectric Reliability Council of Texas, Inc. (ERCO)38.2 GWh-Sep 2025 Solar
Orient Wind FarmMidAmerican Energy CoOrient, IAMidcontinent Independent System Operator, Inc. (MISO)1.8 TWhNov 2018Sep 2025 Wind
Orion I Solar ProjectBen Milam Solar 1 LLCBurlington, TXElectric Reliability Council of Texas, Inc. (ERCO)452.7 GWhJul 2024Sep 2025 Solar
Orion II Solar ProjectBen Milam Solar 2 LLCRosebud, TXElectric Reliability Council of Texas, Inc. (ERCO)556.1 GWhAug 2024Sep 2025 Solar
Orion III Solar ProjectBen Milam Solar 3 LLCBuckholts, TXElectric Reliability Council of Texas, Inc. (ERCO)558.6 GWhJul 2024Sep 2025 Solar
Osborn Wind EnergyOsborn Wind Energy LLCStewartsville, MOSouthwest Power Pool (SWPP)680.9 GWhNov 2016Sep 2025 Wind
Osceola Windpower IIOsceola Windpower IIHarris, IAMidcontinent Independent System Operator, Inc. (MISO)196.9 GWhAug 2008Sep 2025 Wind
Osceola Windpower LLCOsceola Windpower LLCHarris, IASouthwest Power Pool (SWPP)386.7 GWhJun 2008Sep 2025 Wind
Oso Grande Wind FarmTucson Electric Power CoMaljamar, NMTucson Electric Power (TEPC)628.5 GWhApr 2021Sep 2025 Wind
Osprey Energy Center Power PlantDuke Energy Florida, LLCAuburndale, FLTampa Electric Company (TEC)3.8 TWhApr 2004Sep 2025 Natural Gas
Otay Mesa Generating ProjectOtay Mesa Energy Center LLCSan Diego, CACalifornia Independent System Operator (CISO)1.8 TWhSep 2009Sep 2025 Natural Gas
Otis HydroEagle Creek Renewable Energy, LLCLivermore Falls, MEISO New England (ISNE)27.7 GWhDec 1984Sep 2025 Water
Otter Creek Ethanol Poet - AshtonOtter Creek Ethanol LLC - Poet AshtonAshton, IAMidcontinent Independent System Operator, Inc. (MISO)43.5 GWhFeb 2004Sep 2025 Natural Gas
Otter Creek SolarDominion Energy Inc.Chase City, VAPJM Interconnection, LLC (PJM)131.2 GWhSep 2023Sep 2025 Solar
Otter Creek Wind Farm LLCAvangrid Power LLCRansom, ILPJM Interconnection, LLC (PJM)446.2 GWhFeb 2020Sep 2025 Wind
OttumwaInterstate Power and Light CoOttumwa, IAMidcontinent Independent System Operator, Inc. (MISO)2.9 TWhApr 1981Sep 2025 Subbituminous Coal : 99.7%
OuachitaEntergy Louisiana LLCSterlington, LAMidcontinent Independent System Operator, Inc. (MISO)4.3 TWhJul 2002Sep 2025 Natural Gas
Oxbow Solar 1Lightsource Renewable Energy Asset Management, LLCNew Roads, LAMidcontinent Independent System Operator, Inc. (MISO)571.8 GWhJun 2024Sep 2025 Solar
OxnardProcter&Gamble Paper Products Co-OxnardOxnard, CACalifornia Independent System Operator (CISO)479.4 GWhJun 1982Sep 2025 Natural Gas
Oxnard Paper MillNew-Indy, Oxnard LLCOxnard, CACalifornia Independent System Operator (CISO)133.9 GWhFeb 1986Sep 2025 Natural Gas
Oxnard Wastewater Treatment PlantOxnard City ofOxnard, CACalifornia Independent System Operator (CISO)4.2 GWhJul 1981Sep 2025 Other Biomass Gas : 95.1% Natural Gas : 4.9%
Oyster Creek Unit VIIIDow Chemical Company-Oyster Creek VIIIFreeport, TXElectric Reliability Council of Texas, Inc. (ERCO)2.3 TWhSep 1994Sep 2025 Natural Gas : 99.8%
Oregon State University Energy CenterOregon State UniversityCorvallis, ORBonneville Power Administration (BPAT)38.7 GWhMay 2010Aug 2025 Natural Gas
Ormond BeachOrmond Beach Power, LLCOxnard, CACalifornia Independent System Operator (CISO)43.1 GWhJul 1971Aug 2025 Natural Gas
Oswego Harbor PowerOswego Harbor PowerOswego, NYNew York Independent System Operator (NYIS)91.0 GWhMay 1975Aug 2025 Residual Fuel Oil : 99.5%
O'Brien Solar FieldsMadison Gas & Electric CoFitchburg, WIMidcontinent Independent System Operator, Inc. (MISO)38.5 GWhApr 2021Dec 2024 Solar
O'Brien WindMidAmerican Energy CoPrimghar, IAMidcontinent Independent System Operator, Inc. (MISO)875.9 GWhAug 2016Dec 2024 Wind
O'Fallon Renewable Energy CenterUnion Electric Co - (MO)O'Fallon, MOMidcontinent Independent System Operator, Inc. (MISO)2.3 GWhNov 2014Dec 2024 Solar
O H HutchingsKimura Power LLCMiamisburg, OHPJM Interconnection, LLC (PJM)397.0 MWhJun 1948Dec 2024 Natural Gas
O'Neill Creek SolarO'Neill Creek Solar LLCGaston, ORPortland General Electric Company (PGE)3.4 GWhOct 2019Dec 2024 Solar
O'Shea Solar FarmDTE Electric CompanyDetroit, MIMidcontinent Independent System Operator, Inc. (MISO)3.0 GWhJun 2017Dec 2024 Solar
O W SommersCity of San Antonio - (TX)San Antonio, TXElectric Reliability Council of Texas, Inc. (ERCO)2.5 TWhMar 1972Dec 2024 Natural Gas
OaheUSACE-OmahaPierre, SDSouthwest Power Pool (SWPP)2.2 TWhMar 1962Dec 2024 Water
Oak Bluffs Diesel Generating FacilityVineyard Reliability LLCOak Bluffs, MAISO New England (ISNE)2.1 GWhDec 1968Dec 2024 Distillate Fuel Oil
Oak Creek Energy Systems ITerra-Gen Operating Co-WindMojave, CACalifornia Independent System Operator (CISO)54.5 GWhMay 1982Dec 2024 Wind
Oak Glen Wind FarmMinnesota Municipal Power AgnyBlooming Prairie, MNMidcontinent Independent System Operator, Inc. (MISO)120.5 GWhOct 2011Dec 2024 Wind
Oak GrovePortland General Electric CoEstacada, ORPortland General Electric Company (PGE)150.1 GWhJul 1924Dec 2024 Water
Oak Grove Power ProducersCube District Energy, LLCArcadia, KSSouthwest Power Pool (SWPP)8.2 GWhFeb 2010Dec 2024 Landfill Gas
Oak Hill Solar ArraySouthern Indiana Gas & Elec CoEvansville, INMidcontinent Independent System Operator, Inc. (MISO)3.3 GWhOct 2018Dec 2024 Solar
Oak Leaf - CSG Portfolio (OL 36)Distributed Solar Development, LLCWatkins, COSouthwest Power Pool (SWPP)3.2 GWhMay 2021Dec 2024 Solar
Oak Leaf - CSG Portfolio (OL 37)Distributed Solar Development, LLCWatkins, COSouthwest Power Pool (SWPP)3.2 GWhNov 2020Dec 2024 Solar
Oak Leaf - CSG Portfolio (OL 38)Distributed Solar Development, LLCWatkins, COSouthwest Power Pool (SWPP)3.4 GWhMay 2021Dec 2024 Solar
Oak Leaf - CSG Portfolio (OL 39)Distributed Solar Development, LLCWatkins, COSouthwest Power Pool (SWPP)3.5 GWhMay 2021Dec 2024 Solar
Oak Leaf - CSG Portfolio (OL 44)Distributed Solar Development, LLCWatkins, COSouthwest Power Pool (SWPP)3.6 GWhNov 2020Dec 2024 Solar
Oak Leaf Solar XVIII LLCGreenbacker Renewable Energy CorporationDenver, COSouthwest Power Pool (SWPP)11.5 GWhNov 2021Dec 2024 Solar
Oak Leaf Solar XXII LLC (CSG)Greenbacker Renewable Energy CorporationDenver, COPublic Service Company of Colorado (PSCO)3.6 GWhDec 2018Dec 2024 Solar
Oak Leaf Solar XXIII LLC (CSG)Greenbacker Renewable Energy CorporationWatkins, COPublic Service Company of Colorado (PSCO)3.4 GWhDec 2018Dec 2024 Solar
Oak Leaf Solar XXIV LLC (CSG)Greenbacker Renewable Energy CorporationWatkins, COPublic Service Company of Colorado (PSCO)2.0 GWhDec 2018Dec 2024 Solar
Oak Leaf Solar XXV LLC (CSG)Greenbacker Renewable Energy CorporationWatkins, COPublic Service Company of Colorado (PSCO)3.6 GWhNov 2018Dec 2024 Solar
Oak Leaf Solar XXVI LLCGreenbacker Renewable Energy CorporationDenver, COPublic Service Company of Colorado (PSCO)3.7 GWhDec 2018Dec 2024 Solar
Oak Leaf Solar XXVII LLCGreenbacker Renewable Energy CorporationGreely, COPublic Service Company of Colorado (PSCO)3.5 GWhOct 2018Dec 2024 Solar
Oak Leaf Solar XXVIII LLC (CSG)Greenbacker Renewable Energy CorporationPlatteville, COPublic Service Company of Colorado (PSCO)3.3 GWhMay 2019Dec 2024 Solar
Oak Leaf Solar XXX LLC (CSG)Greenbacker Renewable Energy CorporationAlamosa, COPublic Service Company of Colorado (PSCO)3.8 GWhNov 2018Dec 2024 Solar
Oak Leaf Solar XXXI LLC (CSG)Greenbacker Renewable Energy CorporationDebeque, COPublic Service Company of Colorado (PSCO)3.4 GWhNov 2018Dec 2024 Solar
Oak Leaf Solar XXXII (CSG)Greenbacker Renewable Energy CorporationRifle, COPublic Service Company of Colorado (PSCO)2.8 GWhFeb 2019Dec 2024 Solar
Oak Leaf Solar XXXIII LLC (Lantz)Greenbacker Renewable Energy CorporationSalida, COPublic Service Company of Colorado (PSCO)3.6 GWhDec 2019Dec 2024 Solar

Summary of Power Plants By State

Figures are based on September 2025 generation numbers.
StateRankActive PlantsSep 2025 Generation
Alabama# 77612,052.47 GWh
Alaska# 48147527.57 GWh
Arizona# 918311,602.92 GWh
Arkansas# 211175,844.09 GWh
California# 41,76919,371.91 GWh
Colorado# 303044,433.17 GWh
Connecticut# 321683,779.74 GWh
Delaware# 4933419.31 GWh
District of Columbia# 511616.99 GWh
Florida# 232324,446.09 GWh
Georgia# 826611,628.97 GWh
Hawaii# 4773826.54 GWh
Idaho# 441481,495.33 GWh
Illinois# 538514,642.93 GWh
Indiana# 142138,730.35 GWh
Iowa# 262955,224.35 GWh
Kansas# 251895,250.86 GWh
Kentucky# 23605,806.86 GWh
Louisiana# 13879,343.34 GWh
Maine# 452171,135.36 GWh
Maryland# 392042,935.42 GWh
Massachusetts# 416521,746.92 GWh
Michigan# 1127910,468.02 GWh
Minnesota# 297694,717.95 GWh
Mississippi# 20586,625.37 GWh
Missouri# 221285,843.17 GWh
StateRankActive PlantsSep 2025 Generation
Montana# 40721,949.24 GWh
Nebraska# 341323,501.38 GWh
Nevada# 311144,053.88 GWh
New Hampshire# 42601,549.07 GWh
New Jersey# 273994,969.45 GWh
New Mexico# 361453,317.84 GWh
New York# 1296610,145.62 GWh
North Carolina# 1091711,211.15 GWh
North Dakota# 37603,089.17 GWh
Ohio# 620112,818.31 GWh
Oklahoma# 171437,364.05 GWh
Oregon# 282824,812.51 GWh
Pennsylvania# 326019,731.43 GWh
Rhode Island# 46100863.62 GWh
South Carolina# 162077,861.23 GWh
South Dakota# 43521,535.17 GWh
Tennessee# 19886,829.06 GWh
Texas# 194651,969.48 GWh
Utah# 351263,419.48 GWh
Vermont# 50120165.14 GWh
Virginia# 152418,580.52 GWh
Washington# 181387,120.43 GWh
West Virginia# 38393,057.29 GWh
Wisconsin# 242515,674.74 GWh
Wyoming# 33733,641.70 GWh