ISO New England

Balancing Authority Summary Information

ISO New England is ranked #15 out of 64 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 Oct 2026
Annual Generation 112.2 TWh
Power Plants1,667
Utilities846
Ranked #15 out of 64 in terms of net annual generation
Ranked #10 out of 53 in terms of annual generation from natural gas
Power Plant Types Natural Gas | 54% Nuclear | 25.3% Wind | 5.7% Water | 4.6% Other Fuel | 4.5% Solar | 1.6% Coal | 0%

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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 1,387
Plant NameUtilityLocationAnnual GenerationPlant DateLast UpdateFuel Types
BJ's Wholesale Club, Inc- UxbridgeTesla Inc.Uxbridge, MA270 MWhJun 2017Dec 2024 Solar
Orbit Energy RIAnaergiaJohnston, RI144 MWhJun 2017Dec 2024 Other Biomass Gas
Ticket Network South WindsorPowerflexSouth Windsor, CT2 GWhApr 2018Dec 2024 Solar
Pepperidge Farm BloomfieldPepperidge Farm, Inc.- BloomfieldBloomfield, CT15 GWhJul 2008Dec 2024 Natural Gas
Hartford Landfill Solar EGFMaterials Innovation Recycling AuthorityHartford, CT1 GWhMay 2014Dec 2024 Solar
Natick MallNatick MallNatick, MA4 GWhDec 2014Dec 2024 Solar
Cosgrove Intake and Power StationMassachusetts Water Res AuthClinton, MA646 MWhDec 1968Jan 2025 Water
Twiss Street SolarCitizens Enterprises CorporationWestfield, MA2 GWhDec 2014Mar 2025 Solar
Advance Stores Company, IncTesla Inc.Enfield, CT1 GWhOct 2014Mar 2025 Solar
Jiminy Peak Wind QFJiminy Peak Mountain Resort, LLCHancock, MA2 MWhJul 2007Apr 2025 Wind
Redman South Community SolarAES Distributed EnergyBrockport, NY8 GWhJan 2022Jun 2025 Solar
NE Renewable Power JonesboroStored Solar J&WEJonesboro, ME16 MWhNov 1987Jun 2025 Gaseous Propane : 66.7% Wood/Wood Waste Solids : 33.3%
GardinerKEI (Maine) Power Management (III) LLCGardiner, ME4 GWhJun 1985Jun 2025 Water
ENGIE 2019 ProjectCo-MA1, LLCENGIE 2019 ProjectCo MA-1, LLCAgawam, MA5 GWhFeb 2021Jul 2025 Solar
Thundermist HydroCity of Woonsocket - (RI)Providence, RI3 GWhMay 1981Jul 2025 Water
West CharlestonBarton Village, IncWest Charleston, VT6 GWhJun 1931Jul 2025 Water
JackmanCentral Rivers Power NH, LLCHillsborough, NH8 GWhJan 1926Aug 2025 Water
Brassua Hydroelectric ProjectBrassua Hydroelectric LPRockwood, ME13 GWhAug 1989Aug 2025 Water
West Tisbury Generating FacilityVineyard Reliability LLCWest Tisbury, MA5 GWhDec 1974Sep 2025 Distillate Fuel Oil
Oak Bluffs Diesel Generating FacilityVineyard Reliability LLCOak Bluffs, MA3 GWhDec 1968Sep 2025 Distillate Fuel Oil
Hardwick-Athol & Eagle HillMadison Energy Investments LLCHardwick, MA2 GWhJun 2015Sep 2025 Solar
East Windsor Solar OneDG Connecticut III, LLCEast Windsor, CT6 GWhNov 2021Sep 2025 Solar
Goodwin HydroelectricMetropolitan Dist of HartfordW. Hartland, CT8 GWhMar 1986Oct 2025 Water
Clement Dam Hydro LLCEagle Creek Renewable Energy, LLCTilton, NH7 GWhNov 1984Oct 2025 Water
Lochmere Hydroelectric PlantEagle Creek Renewable Energy, LLCTilton, NH2 GWhNov 1984Oct 2025 Water
Lilly LaneLSE Chamaeleon LLCCharlton, MA2 GWhMay 2018Oct 2025 Solar
1 CommercialMadison Energy Investments LLCSharon, MA622 MWhAug 2023Oct 2025 Solar
Future Generation WindRWE Clean EnergyPlymouth, MA12 GWhJul 2016Nov 2025 Wind
W K SandersVillage of Morrisville - (VT)Hyde Park, VT716 MWhJun 1983Nov 2025 Water
BrooksideTerraform ArcadiaNorth Smithfield, RI969 MWhOct 2015Nov 2025 Solar
Hydro Kennebec ProjectHydro Kennebec LLCWinslow, ME37 GWhDec 1988Nov 2025 Water
Waters RiverCity of Peabody - (MA)Peabody, MA6 GWhNov 1971Nov 2025 Natural Gas : 71.3% Distillate Fuel Oil : 28.7%
Bulls BridgeFirstLight Power Resources Services LLCNew Milford, CT27 GWhDec 1902Dec 2025 Water
Cos CobConnecticut Jet Power LLCGreenwich, CT2 GWhAug 1969Dec 2025 Kerosene
Scotland DamFirstLight Power Resources Services LLCWindham, CT4 GWhDec 1936Dec 2025 Water
ShepaugFirstLight Power Resources Services LLCSouthbury, CT93 GWhDec 1954Dec 2025 Water
TaftvilleFirstLight Power Resources Services LLCTaftville, CT2 GWhDec 1905Dec 2025 Water
TunnelFirstLight Power Resources Services LLCPreston, CT6 GWhDec 1918Dec 2025 Water
Franklin DriveConnecticut Jet Power LLCTorrington, CT294 MWhOct 1968Dec 2025 Kerosene
MiddletownMiddletown Power LLCMiddletown, CT87 GWhSep 1958Dec 2025 Residual Fuel Oil : 99.9%
TorringtonConnecticut Jet Power LLCTorrington, CT277 MWhOct 1967Dec 2025 Kerosene
ShrewsburyTown of Shrewsbury - (MA)Shrewsbury, MA2 GWhOct 1969Dec 2025 Distillate Fuel Oil
East BarnetGreen Mountain Power CorpBarnet, VT5 GWhAug 1984Dec 2025 Water
Charles E MontyBrookfield White Pine Hydro LLCLewiston, ME114 GWhDec 1989Dec 2025 Water
Ellsworth Hydro StationBrookfield Black Bear Hydro, LLCEllsworth, ME18 GWhJun 1924Dec 2025 Water
Milford Hydro StationBrookfield Black Bear Hydro, LLCMilford, ME36 GWhJun 1941Dec 2025 Water
Stillwater Hydro StationBrookfield Black Bear Hydro, LLCStillwater, ME6 GWhDec 1912Dec 2025 Water
Bonny EagleBrookfield White Pine Hydro LLCHollis, ME31 GWhDec 1909Dec 2025 Water
Brunswick HydroBrookfield White Pine Hydro LLCBrunswick, ME70 GWhFeb 1982Dec 2025 Water
Cape Gas TurbineFPL Energy Cape LLCPortland, ME752 MWhDec 1969Dec 2025 Distillate Fuel Oil
Cataract HydroBrookfield White Pine Hydro LLCSaco, ME23 GWhDec 1936Dec 2025 Water
Deer RipsBrookfield White Pine Hydro LLCAuburn, ME51 GWhDec 1902Dec 2025 Water
Gulf IslandBrookfield White Pine Hydro LLCLewiston, ME115 GWhDec 1925Dec 2025 Water
Harris HydroBrookfield White Pine Hydro LLCWest Forks, ME151 GWhDec 1953Dec 2025 Water
ShawmutBrookfield White Pine Hydro LLCShawmut, ME23 GWhDec 1912Dec 2025 Water
GSPP Worcester Business Center, LLCGreen Street Power PartnersWorcester, MA300 MWhJul 2025Dec 2025 Solar
West BuxtonBrookfield White Pine Hydro LLCBuxton, ME21 GWhDec 1903Dec 2025 Water
Weston HydroBrookfield White Pine Hydro LLCSkowhegan, ME57 GWhDec 1919Dec 2025 Water
Williams HydroBrookfield White Pine Hydro LLCSolon, ME64 GWhDec 1938Dec 2025 Water
Wyman HydroBrookfield White Pine Hydro LLCBingham, ME295 GWhDec 1929Dec 2025 Water
Exelon Framingham LLCConstellation Power, IncFramingham, MA1 GWhAug 1969Dec 2025 Distillate Fuel Oil
Exelon Medway LLCConstellation Power, IncMedway, MA4 GWhJun 1970Dec 2025 Distillate Fuel Oil
DwightCentral Rivers Power MA, LLCChicopee, MA6 GWhDec 1919Dec 2025 Water
Deerfield 2Great River Hydro, LLCConway, MA29 GWhJul 1913Dec 2025 Water
BoatlockCity of Holyoke Gas and Elec Dept - (MA)Holyoke, MA12 GWhDec 1920Dec 2025 Water
ChemicalCity of Holyoke Gas and Elec Dept - (MA)Holyoke, MA5 GWhDec 1934Dec 2025 Water
Hadley FallsCity of Holyoke Gas and Elec Dept - (MA)Holyoke, MA137 GWhDec 1951Dec 2025 Water
Riverside HolyokeCity of Holyoke Gas and Elec Dept - (MA)Holyoke, MA22 GWhDec 1905Dec 2025 Water
Deerfield 5Great River Hydro, LLCFlorida, MA44 GWhSep 1974Dec 2025 Water
CabotFirstLight Power Resources, Inc. - MAMontague, MA239 GWhDec 1914Dec 2025 Water
Cobble MountainCity of Holyoke Gas and Elec Dept - (MA)Granville, MA7 GWhDec 1929Dec 2025 Water
Gardners FallsCentral Rivers Power MA, LLCBuckland, MA11 GWhDec 1913Dec 2025 Water
Putts BridgeCentral Rivers Power MA, LLCLudlow, MA11 GWhDec 1917Dec 2025 Water
Potter Station 2Town of Braintree - (MA)Braintree, MA41 GWhJun 1963Dec 2025 Natural Gas : 61.2% Distillate Fuel Oil : 38.8%
High Street StationTown of Ipswich - (MA)Ipswich, MA153 MWhMay 1937Dec 2025 Natural Gas : 92.3% Distillate Fuel Oil : 7.7%
Cleary Flood HybridCity of Taunton - (MA)Taunton, MA54 GWhMay 1966Dec 2025 Natural Gas : 94.0% Distillate Fuel Oil : 6.0%
ComerfordGreat River Hydro, LLCMonroe, NH297 GWhAug 1930Dec 2025 Water
S C MooreGreat River Hydro, LLCLittleton, NH255 GWhDec 1956Dec 2025 Water
Great Falls (VT)The Town of Lyndon Elec Dept - (VT)Lyndon, VT2 GWhJul 1915Dec 2025 Water
White LakeGranite Shore PowerTamworth, NH594 MWhJun 1968Dec 2025 Jet Fuel
Deerfield 3Great River Hydro, LLCBuckland, MA26 GWhJul 1912Dec 2025 Water
Smith (VT)Green Mountain Power CorpBradford, VT2 GWhNov 1982Dec 2025 Water
CavendishGreen Mountain Power CorpCavendish, VT1 GWhJan 1907Dec 2025 Water
Clark FallsGreen Mountain Power CorpMilton, VT14 GWhJan 1937Dec 2025 Water
Fairfax FallsGreen Mountain Power CorpFairfax, VT16 GWhJan 1919Dec 2025 Water
GlenGreen Mountain Power CorpRutland, VT6 GWhJul 1920Dec 2025 Water
Lower MiddleburyGreen Mountain Power CorpMiddlebury Lower, VT5 GWhJul 1917Dec 2025 Water
MiltonGreen Mountain Power CorpMilton, VT34 GWhJan 1929Dec 2025 Water
PetersonGreen Mountain Power CorpMilton, VT25 GWhJan 1948Dec 2025 Water
PittsfordGreen Mountain Power CorpPittsford, VT8 GWhJan 1914Dec 2025 Water
SalisburyGreen Mountain Power CorpSalisbury, VT2 GWhJan 1917Dec 2025 Water
Silver Lake (VT)Green Mountain Power CorpSalisbury, VT5 GWhJan 1917Dec 2025 Water
WeybridgeGreen Mountain Power CorpWeybridge, VT10 GWhJan 1951Dec 2025 Water
NewportGreat Bay Hydro CorpNewport, VT13 GWhDec 1935Dec 2025 Water
Colchester 16Green Mountain Power CorpColchester, VT310 MWhSep 1965Dec 2025 Distillate Fuel Oil
Marshfield 6Green Mountain Power CorpMarshfield, VT4 GWhDec 1926Dec 2025 Water
Middlesex 2Green Mountain Power CorpMoretown, VT6 GWhDec 1927Dec 2025 Water
West Danville 15Green Mountain Power CorpDanville, VT2 GWhDec 1916Dec 2025 Water
Bellows FallsGreat River Hydro, LLCBellow Falls, VT194 GWhFeb 1928Dec 2025 Water
HarrimanGreat River Hydro, LLCWhitingham, VT98 GWhApr 1924Dec 2025 Water

Surrounding Balancing Authorities

Balancing Authorities with Similar Net Generation

RankBalancing AuthorityAnnual Net Generation# Power Plants
#7California Independent System Operator168.7 TWh2,170
#9Tennessee Valley Authority166.2 TWh209
#10Florida Power & Light Co.153.0 TWh188
#12New York Independent System Operator134.1 TWh1,334
#13Duke Energy Carolinas113.4 TWh578
#15ISO New England112.2 TWh1,667
#16Bonneville Power Administration91.1 TWh170
#17Duke Energy Progress East66.2 TWh574
#18PacifiCorp East61.4 TWh223
#19Salt River Project Agricultural Improvement and Power District60.5 TWh51