ISO New England

Balancing Authority Summary Information

ISO New England is ranked #15 out of 65 balancing authorities in terms of total annual electricity generation.

Balancing AuthorityISO New England
States Connecticut Maine Massachusetts New Hampshire New York Rhode Island Vermont
Last Update Apr 2025
Annual Generation 103.6 TWh
Power Plants1,487
Utilities782
Ranked #15 out of 65 in terms of net annual generation
Ranked #11 out of 53 in terms of annual generation from natural gas
Power Plant Types Natural Gas | 57.1% Nuclear | 25.3% Water | 6.1% Other Fuel | 4.5% Wind | 3.5% Solar | 1.4% Coal | 0.3%

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Daily Net Generation for ISO New England for the past 3 Years

List of All ISO New England Power Plants

Displaying Results 1 to 100 of 1,206
Plant NameUtilityLocationAnnual GenerationPlant DateLast UpdateFuel Types
Rocky River (CT)FirstLight Power Resources Services LLCNew Milford, CT5 GWhDec 1927Feb 2025 Water
UCONN Cogen FacilityUniversity of ConnecticutStorrs, CT123 GWhFeb 2006Feb 2025 Natural Gas : 98.9% Distillate Fuel Oil : 1.1%
Pratt & WhitneyUnited TechnologiesEast Hartford, CT99 GWhDec 1991Feb 2025 Natural Gas
Frito Lay IncorporatedFrito Lay Incorporated DayvilleDayville, CT24 GWhFeb 2009Feb 2025 Natural Gas
Cellu TissueDunn Paper East Hartford, LLCEast Hartford, CT12 GWhApr 2009Feb 2025 Natural Gas
Pittsfield Generating LPPittsfield Generating Company, LPPittsfield, MA31 GWhJun 1990Feb 2025 Natural Gas : 94.6% Distillate Fuel Oil : 5.4%
Oakfield Wind ProjectOnward EnergyCity of Oakfield, ME352 GWhSep 2015Feb 2025 Wind
Milford Power ProjectMilford Power Co LLCMilford, CT4 TWhJan 2004Feb 2025 Natural Gas
Algonquin Windsor LocksAlgonquin Windsor Locks LLCWindsor Locks, CT120 GWhDec 1989Feb 2025 Natural Gas : 99.9%
WED Coventry 2WED Coventry Two, LLCCoventry, RI8 GWhJul 2016Feb 2025 Wind
Rainbow (CT)Farmington River Power CompanyWindsor, CT25 GWhNov 1925Feb 2025 Water
Dept of Corrections NCCI WindDept of Corrections NCCI WindGardner, MA6 GWhOct 2013Feb 2025 Wind
Kingdom Community WindGreen Mountain Power CorpLowell, VT179 GWhOct 2012Feb 2025 Wind
Hampton FacilityFoss Manufacturing Company LLCHampton, NH22 GWhSep 1978Feb 2025 Natural Gas
Erving Paper MillsErving Paper Mills IncErving, MA43 GWhNov 2013Feb 2025 Natural Gas : 98.0% Distillate Fuel Oil : 2.0%
Bridgeport Energy ProjectBridgeport Energy LLCBridgeport, CT3 TWhMay 1998Feb 2025 Natural Gas
MillstoneDominion Energy Nuclear Conn IncWaterford, CT17 TWhNov 1975Feb 2025 Nuclear
Bridgeport StationGeneration Bridge II Connecticut, LLCBridgeport, CT4 TWhJul 1961Feb 2025 Natural Gas : 98.6% Distillate Fuel Oil : 1.4%
Fort Hill 1, 2, 3 & 4Connecticut Mun Elec Engy CoopUncasville, CT560 MWhJul 2010Feb 2025 Distillate Fuel Oil
CPV Towantic Energy CenterCPV Towantic, LLCOxford, CT6 TWhApr 2018Feb 2025 Natural Gas
J C McNeilCity of Burlington Electric - (VT)Burlington, VT203 GWhMay 1984Feb 2025 Wood/Wood Waste Solids : 99.8%
Millennium PowerMillennium Power Company, LLCCharlton, MA440 GWhMar 2001Feb 2025 Natural Gas
Rand Whitney CHP PlantRand Whitney Containerboard L.P.Montville, CT133 GWhMar 2005Feb 2025 Natural Gas
Eastern Maine Medical CenterEastern Maine Medical CenterBangor, ME31 GWhSep 2006Feb 2025 Natural Gas
Block Island Wind FarmDeepwater Wind Block Island LLCNA, RI90 GWhNov 2016Feb 2025 Wind
Hancock Wind PlantOnward EnergyT22 MD, ME123 GWhNov 2016Feb 2025 Wind
Antares-GRE 314 East Lyme LLCMN8 Energy LLCEast Lyme, CT4 GWhMay 2014Feb 2025 Solar
WED Coventry 6Greenbacker Renewable Energy CorporationCoventry, RI7 GWhJul 2016Feb 2025 Wind
Cape Cod Air Force Station - 6 SWSUS Air ForceSagamore, MA4 GWhDec 2013Feb 2025 Wind
Middlebury CollegeMiddlebury College BiomassMiddlebury, VT2 GWhDec 1979Feb 2025 Wood/Wood Waste Solids : 69.3% Natural Gas : 30.7%
Blackstone/TupperwareBlackstone Hydro Inc.North Smithfield, RI3 GWhDec 1980Feb 2025 Water
MMWAC Resource Recovery FacilityMaine Waste to EnergyAuburn, ME10 GWhMay 1992Feb 2025 Non-biogenic Municipal Solid Waste : 54.0% Biogenic Municipal Solid Waste : 44.2% Natural Gas : 1.8%
General Electric Aircraft EnginesGeneral Electric Aircraft EnginesLynn, MA2 GWhDec 1947Feb 2025 Solar
Central Power PlantState of Rhode IslandCranston, RI19 GWhJul 1958Feb 2025 Natural Gas
Rhode Island HospitalRhode Island HospitalProvidence, RI10 GWhSep 1974Feb 2025 Natural Gas : 85.9% Residual Fuel Oil : 14.1%
Wheelabrator SaugusWheelabrator Environmental SystemsSaugus, MA230 GWhJul 1985Feb 2025 Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Somerset PlantSappi Fine Paper North America-SomersetSkowhegan, ME541 GWhDec 1975Feb 2025 Black Liquor : 46.6% Wood/Wood Waste Solids : 37.6% Tire-derived Fuels : 6.2% Natural Gas : 5.9% Residual Fuel Oil : 2.6% Sludge Waste : 1.0%
Covanta Southeastern Connecticut CompanyCovanta Southeastern Connecticut CompanyPreston, CT112 GWhNov 1991Feb 2025 Non-biogenic Municipal Solid Waste : 54.1% Biogenic Municipal Solid Waste : 44.3% Distillate Fuel Oil : 1.6%
Granite RidgeGranite Ridge Energy LLCLondonderry, NH3 TWhFeb 2003Feb 2025 Natural Gas
Wheelabrator LisbonWheelabrator Environmental SystemsLisbon, CT100 GWhSep 1995Feb 2025 Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Fore River Generating StationCalpine Fore River Energy Center, LLCNorth Weymouth, MA3 TWhJul 2003Feb 2025 Natural Gas : 95.5% Distillate Fuel Oil : 4.5%
William F Wyman HybridFPL Energy Wyman LLCYarmouth, ME50 GWhDec 1956Feb 2025 Residual Fuel Oil : 99.2% Distillate Fuel Oil : 0.8%
Bingham WindOnward EnergyBingham, ME485 GWhNov 2016Feb 2025 Wind
Sheffield WindEvergreen Wind, LLCSheffield, VT74 GWhSep 2011Feb 2025 Wind
Westbrook Energy Center Power PlantWestbrook Energy CenterWestbrook, ME3 TWhApr 2001Feb 2025 Natural Gas
Dartmouth College Heating PlantDartmouth CollegeHanover, NH10 GWhDec 1969Feb 2025 Residual Fuel Oil
West Greenwich SolarConsolidated Edison Development Inc.West Greenwich, RI3 GWhApr 2013Feb 2025 Solar
Exelon West Medway II LLCConstellation Power, IncMedway, MA213 GWhFeb 2019Feb 2025 Natural Gas : 98.1% Kerosene : 1.9%
UNH 7.9 MW PlantEmcor Energy ServicesDurham, NH49 GWhAug 2006Feb 2025 Landfill Gas : 74.1% Natural Gas : 24.4% Distillate Fuel Oil : 1.6%
Kendall Square StationKendall Green Energy, LLCCambridge, MA2 TWhMay 1949Feb 2025 Natural Gas : 99.0% Distillate Fuel Oil : 1.0%
Groton Wind LLCAvangrid Renewables LLCGroton, NH111 GWhNov 2012Feb 2025 Wind
CanalCanal Generating LLCSandwich, MA310 GWhMay 1968Feb 2025 Natural Gas : 73.3% Residual Fuel Oil : 24.0% Distillate Fuel Oil : 2.7%
Granite Reliable PowerNexteraEnergyDummer, NH201 GWhJan 2012Feb 2025 Wind
Jericho PowerJericho Power LLCBerlin, NH21 GWhDec 2015Feb 2025 Wind
Fusion Solar Center LLCFusion Solar Centre, L.L.CBaltic, CT40 GWhFeb 2018Feb 2025 Solar
Cottage Street Solar FacilityWestern Massachusetts Electric CompanySpringfield, MA3 GWhApr 2014Feb 2025 Solar
Johnston LFG Turbine PlantRhode Island LFG GencoJohnston, RI189 GWhApr 2013Feb 2025 Landfill Gas
NBC Field's Point Wind FarmNarragansett Bay CommissionProvidence, RI6 GWhSep 2012Feb 2025 Wind
Backus Microgrid ProjectConnecticut Mun Elec Engy CoopNorwich, CT972 MWhJul 2014Feb 2025 Distillate Fuel Oil
Passadumkeag Windpark LLCSouthern Power CoGreenbush, ME131 GWhJun 2016Feb 2025 Wind
Georgia Mountain Community Wind FarmGreenbacker Renewable Energy CorporationMilton, VT28 GWhNov 2012Feb 2025 Wind
SeabrookNextEra Energy Seabrook LLCSeabrook, NH10 TWhJul 1990Feb 2025 Nuclear
Rumford CogenerationND Paper, Inc.Rumford, ME425 GWhDec 1989Feb 2025 Black Liquor : 53.9% Tire-derived Fuels : 23.2% Wood/Wood Waste Solids : 11.2% Bituminous Coal : 7.6% Residual Fuel Oil : 3.1% Sludge Waste : 1.0%
NewingtonGranite Shore PowerNewington, NH93 GWhMay 1974Feb 2025 Natural Gas : 59.5% Residual Fuel Oil : 39.9% Distillate Fuel Oil : 0.5%
Deer Island Treatment PlantMassachusetts Wtr Rauth-Deer IWinthrop, MA36 GWhJul 1995Feb 2025 Other Biomass Gas : 76.7% Distillate Fuel Oil : 13.6% Water : 5.8% Wind : 2.2% Solar : 1.7%
Regional Waste SystemsEcomainePortland, ME82 GWhMay 1988Feb 2025 Non-biogenic Municipal Solid Waste : 54.6% Biogenic Municipal Solid Waste : 44.6% Natural Gas : 0.8%
Otis HydroEagle Creek Renewable Energy, LLCLivermore Falls, ME31 GWhDec 1984Feb 2025 Water
Pepperell Hydro Power PlantEagle Creek Renewable Energy, LLCPepperell, MA4 GWhDec 1919Feb 2025 Water
Searsburg Wind TurbineGreen Mountain Power CorpSearsburg, VT10 GWhMay 1997Feb 2025 Wind
Wheelabrator Concord FacilityWheelabrator Environmental SystemsConcord, NH93 GWhMar 1989Feb 2025 Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Covanta Bristol EnergyCovanta Bristol IncBristol, CT108 GWhNov 1987Feb 2025 Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
SEMASS Resource RecoverySEMASS PartnershipWest Wareham, MA567 GWhJun 1988Feb 2025 Non-biogenic Municipal Solid Waste : 54.1% Biogenic Municipal Solid Waste : 44.3% Natural Gas : 1.6%
Wheelabrator Millbury FacilityWheelabrator Environmental SystemsMillbury, MA316 GWhAug 1987Feb 2025 Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Gillette SBMCThe Gillette CompanyBoston, MA60 GWhJan 1971Feb 2025 Natural Gas : 99.9%
Wheelabrator BridgeportWheelabrator Environmental SystemsBridgeport, CT447 GWhJun 1988Feb 2025 Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Wheelabrator North AndoverWheelabrator Environmental SystemsNorth Andover, MA239 GWhApr 1985Feb 2025 Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Bucksport Generation LLCBucksport Generation LLCBucksport, ME14 GWhJun 1965Feb 2025 Natural Gas : 98.2% Distillate Fuel Oil : 1.8%
New Haven HarborGeneration Bridge II Connecticut, LLCNew Haven, CT45 GWhJun 1975Feb 2025 Natural Gas : 53.7% Residual Fuel Oil : 33.6% Kerosene : 10.8% Distillate Fuel Oil : 1.9%
MerrimackGranite Shore PowerBow, NH323 GWhNov 1960Feb 2025 Bituminous Coal : 99.6%
SchillerGranite Shore PowerPortsmouth, NH517 MWhSep 1952Feb 2025 Jet Fuel
Lake Road Generating PlantLake Road Generating Co LPDayville, CT6 TWhFeb 2002Feb 2025 Natural Gas
Rhode Island State Energy CenterRISEC Operating ServicesJohnston, RI3 TWhSep 2002Feb 2025 Natural Gas
Manchester StreetManchester Street, LLC.Providence, RI1 TWhAug 1995Feb 2025 Natural Gas : 98.1% Distillate Fuel Oil : 1.9%
AscutneyGreen Mountain Power CorpWeatherfield, VT192 MWhJul 1961Feb 2025 Distillate Fuel Oil
Pfizer Groton PlantPfizer IncGroton, CT80 GWhDec 1947Feb 2025 Natural Gas : 95.2% Distillate Fuel Oil : 4.8%
Lempster Wind LLCAvangrid Renewables LLCLempster, NH65 GWhNov 2008Feb 2025 Wind
NewingtonEssential Power Operating Services, LLCNewington, NH1 TWhSep 2002Feb 2025 Natural Gas : 94.8% Distillate Fuel Oil : 5.2%
ANP Blackstone Energy ProjectANP Blackstone Energy Company LLCBlackstone, MA2 TWhMay 2001Feb 2025 Natural Gas
Stony BrookMassachusetts Mun Wholes Electric CoLudlow, MA65 GWhOct 1981Feb 2025 Distillate Fuel Oil : 74.0% Natural Gas : 26.0%
Kibby Wind FacilityHelix Maine Wind Development, LLCChain of Ponds, ME271 GWhSep 2009Feb 2025 Wind
New England Wind LLCAvangrid Renewables LLCFlorida, MA68 GWhNov 2012Feb 2025 Wind
Kleen Energy Systems ProjectKleen Energy Systems, LLCMiddletown, CT3 TWhJun 2011Feb 2025 Natural Gas : 99.2% Distillate Fuel Oil : 0.8%
Framingham State University PlantFramingham State UniversityFramingham, MA74 MWhMay 1974Feb 2025 Solar : 67.6% Distillate Fuel Oil : 32.4%
ANP Bellingham Energy ProjectBellingham Power Generation LLCBellingham, MA3 TWhOct 2002Feb 2025 Natural Gas
Berkshire Wind Power ProjectMassachusetts Mun Wholes Electric CoLanesboro, MA29 GWhApr 2011Feb 2025 Wind
Mt Wachusett Community CollegeMt Wachusett Community CollegeGardner, MA5 GWhFeb 2011Feb 2025 Wind
Spring Hill RoadAES Distributed EnergyBarre, MA162 MWhNov 2015Feb 2025 Solar
Berlin 5Green Mountain Power CorpBerlin, VT890 MWhMay 1972Feb 2025 Kerosene
Water Treatment 1 & 2Connecticut Mun Elec Engy CoopGroton, CT332 MWhSep 2010Feb 2025 Distillate Fuel Oil
Essex Junction 19Green Mountain Power CorpEssex Junction, VT39 GWhDec 1916Feb 2025 Water : 99.6%

Surrounding Balancing Authorities

Balancing Authorities with Similar Net Generation

RankBalancing AuthorityAnnual Net Generation# Power Plants
#7California Independent System Operator189.5 TWh1,943
#8Tennessee Valley Authority158.9 TWh170
#10Florida Power & Light Co.148.5 TWh159
#12New York Independent System Operator131.1 TWh1,100
#13Duke Energy Carolinas111.3 TWh556
#15ISO New England103.6 TWh1,487
#16Bonneville Power Administration82.9 TWh158
#17Duke Energy Progress East65.3 TWh554
#18Salt River Project Agricultural Improvement and Power District58.6 TWh45
#19PacifiCorp East56.9 TWh204