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 Jul 2026
Annual Generation 111.1 TWh
Power Plants1,629
Utilities833
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 | 54.9% Nuclear | 25% Wind | 5.1% Water | 4.5% Other Fuel | 4.4% Solar | 1.6% Coal | 0.1%

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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 1,301 to 1,367 of 1,367
Plant NameUtilityLocationAnnual GenerationPlant DateLast UpdateFuel Types
Kingdom Community WindGreen Mountain Power CorpLowell, VT164 GWhOct 2012May 2026 Wind
Granite Reliable PowerNexteraEnergyDummer, NH192 GWhJan 2012May 2026 Wind
Mt Wachusett Community CollegeMt Wachusett Community CollegeGardner, MA4 GWhFeb 2011May 2026 Wind
Block Island Wind FarmDeepwater Wind Block Island LLCNA, RI83 GWhNov 2016May 2026 Wind
Cellu TissueDunn Paper East Hartford, LLCEast Hartford, CT12 GWhApr 2009May 2026 Natural Gas
Groton Wind LLCAvangrid Power LLCGroton, NH101 GWhNov 2012May 2026 Wind
Eastern Maine Medical CenterEastern Maine Medical CenterBangor, ME28 GWhSep 2006May 2026 Natural Gas
UCONN Cogen FacilityUniversity of ConnecticutStorrs, CT112 GWhFeb 2006May 2026 Natural Gas : 95.2% Distillate Fuel Oil : 4.8%
UNH 7.9 MW PlantEmcor Energy ServicesDurham, NH53 GWhAug 2006May 2026 Landfill Gas : 55.5% Natural Gas : 42.0% Distillate Fuel Oil : 2.5%
Rand Whitney CHP PlantRand Whitney Containerboard L.P.Montville, CT132 GWhMar 2005May 2026 Natural Gas
West Greenwich SolarRWE Clean EnergyWest Greenwich, RI2 GWhApr 2013May 2026 Solar
Georgia Mountain Community Wind FarmGreenbacker Renewable Energy CorporationMilton, VT25 GWhNov 2012May 2026 Wind
Cottage Street Solar FacilityWestern Massachusetts Electric CompanySpringfield, MA4 GWhApr 2014May 2026 Solar
Cape Cod Air Force Station - 6 SWSUS Space ForceSagamore, MA6 GWhDec 2013May 2026 Wind
Frito Lay IncorporatedFrito Lay Incorporated DayvilleDayville, CT25 GWhFeb 2009May 2026 Natural Gas
Hancock Wind PlantOnward EnergyT22 MD, ME112 GWhNov 2016May 2026 Wind
Fusion Solar Center LLCFusion Solar Centre, L.L.CBaltic, CT38 GWhFeb 2018May 2026 Solar
Dept of Corrections NCCI WindDept of Corrections NCCI WindGardner, MA2 GWhOct 2013May 2026 Wind
Jericho PowerJericho Power LLCBerlin, NH23 GWhDec 2015May 2026 Wind
Passadumkeag Windpark LLCSouthern Power CoGreenbush, ME138 GWhJun 2016May 2026 Wind
Johnston LFG Turbine PlantRhode Island LFG GencoJohnston, RI173 GWhApr 2013May 2026 Landfill Gas
WED Coventry 2WED Coventry Two, LLCCoventry, RI9 GWhJul 2016May 2026 Wind
WED Coventry 6Greenbacker Renewable Energy CorporationCoventry, RI8 GWhJul 2016May 2026 Wind
Backus Microgrid ProjectConnecticut Mun Elec Engy CoopNorwich, CT843 MWhJul 2014May 2026 Distillate Fuel Oil
Antares-GRE 314 East Lyme LLCMN8 Energy LLCEast Lyme, CT4 GWhMay 2014May 2026 Solar
NBC Field's Point Wind FarmNarragansett Bay CommissionProvidence, RI7 GWhSep 2012May 2026 Wind
Framingham State University PlantFramingham State UniversityFramingham, MA38 MWhMay 1974May 2026 Solar : 63.2% Distillate Fuel Oil : 36.8%
Spring Hill RoadAES Distributed EnergyBarre, MA243 MWhNov 2015May 2026 Solar
Exelon West Medway II LLCConstellation Power, IncMedway, MA259 GWhFeb 2019May 2026 Natural Gas : 95.3% Kerosene : 4.7%
Antrim WindAntrim Wind Energy LLCAntrim, NH76 GWhNov 2019May 2026 Wind
UI RCP New Haven Fuel CellUnited Illuminating CoNew Haven, CT21 GWhJul 2015May 2026 Natural Gas
UI RCP Bridgeport SeasideUnited Illuminating CoBridgeport, CT18 GWhOct 2015May 2026 Natural Gas : 84.7% Solar : 15.3%
Stafford Hill Solar HybridGreen Mountain Power CorpRutland, VT390 MWhFeb 2015May 2026 Solar
GMP Solar - RichmondGreen Mountain Power CorpRichmond, VT3 GWhSep 2016May 2026 Solar
GMP Solar - Panton HybridGreen Mountain Power CorpPanton, VT8 GWhNov 2016May 2026 Solar
Wind Colebrook SouthWind Colebrook SouthColebrook, CT11 GWhOct 2015May 2026 Wind
GMP Solar - HartfordGreen Mountain Power CorpHartford, VT7 GWhNov 2016May 2026 Solar
GMP Solar - WillistonGreen Mountain Power CorpWilliston, VT6 GWhOct 2016May 2026 Solar
GMP Solar - WilliamstownGreen Mountain Power CorpWilliamstown, VT7 GWhNov 2016May 2026 Solar
Salem Harbor Power Development LPSalem Harbor Power Development LPSalem, MA2 TWhApr 2018May 2026 Natural Gas
Deerfield Wind LLCAvangrid Power LLCSearsburg, VT92 GWhNov 2017May 2026 Wind
CED FosterRWE Clean EnergyFoster, RI3 GWhNov 2017May 2026 Solar
Woods Hill SolarWoods Hill Solar, LLCPomfret, CT22 GWhNov 2018May 2026 Solar
Coolidge Solar 1, LLCCoolidge Solar I, LLCLudlow, VT25 GWhNov 2018May 2026 Solar
Southwick Solar PVNSTAR Electric CompanySouthwick, MA8 GWhDec 2018May 2026 Solar
Montague Site 36-GrosolarNSTAR Electric CompanyMillers Falls, MA6 GWhSep 2018May 2026 Solar
WED Green Hill, LLCWED Green Hill, LLCJohnston, RI6 GWhDec 2018May 2026 Wind
WED Shun I, LLCWED Shun I, LLCJohnston, RI7 GWhDec 2018May 2026 Wind
Richmond NMCAAES Distributed EnergyWood River Junction, RI6 GWhNov 2018May 2026 Solar
Founders Homestead Farms SolarAES Distributed EnergyPortsmouth, RI6 GWhNov 2019May 2026 Solar
GMP Solar/Storage-Milton HybridGreen Mountain Power CorpMilton, VT7 GWhAug 2019May 2026 Solar
GMP Solar/Storage-Ferrisburgh HybridGreen Mountain Power CorpFerrisburgh, VT8 GWhAug 2019May 2026 Solar
GMP Solar/Storage-Essex HybridGreen Mountain Power CorpEssex, VT7 GWhAug 2019May 2026 Solar
DWW Solar llDWW Solar ll LLCSimsbury, CT46 GWhNov 2019May 2026 Solar
Dry Bridge Solar (Brown University)MN8 Energy LLCNorth Kingstown, RI64 GWhOct 2023May 2026 Solar
Vineyard Wind 1Vineyard Wind 1 LLCEdgartown, MA363 GWh-May 2026 Wind
Weaver WindGreenbacker Renewable Energy CorporationTownship 16, ME214 GWhNov 2020May 2026 Wind
Sanford SolarSanford Airport Solar, LLCSanford, ME87 GWhOct 2020May 2026 Solar
University Solar, LLCAES Distributed EnergyWest Greenwich, RI27 GWhNov 2019May 2026 Solar
Farmington SolarFarmington Solar, LLCFarmington, ME125 GWhSep 2021May 2026 Solar
Quinebaug SolarQuinebaug Solar, LLCCanterbury, CT74 GWhNov 2021May 2026 Solar
Gravel Pit Solar, LLCGravel Pit Solar, LLCEast Windsor, CT187 GWhJan 2025May 2026 Solar
Robin Hollow SolarRobin Hollow Solar, LLCWest Greenwich, RI69 GWhNov 2023May 2026 Solar
Three Corners SolarThree Corners Solar, LLCUnity, ME197 GWhJun 2024May 2026 Solar
MoscowGreenbacker Renewable Energy CorporationMoscow, ME112 GWhMay 2025May 2026 Wind
Downeast WindDowneast Wind, LLCColumbia, ME364 GWhDec 2024May 2026 Wind
Medway GridMedway Grid LLCMedway, MA20 GWh-May 2026 Electricity used for energy storage

Surrounding Balancing Authorities

Balancing Authorities with Similar Net Generation

RankBalancing AuthorityAnnual Net Generation# Power Plants
#7California Independent System Operator169.4 TWh2,135
#9Tennessee Valley Authority163.4 TWh207
#10Florida Power & Light Co.152.2 TWh187
#12New York Independent System Operator134.3 TWh1,299
#13Duke Energy Carolinas112.6 TWh577
#15ISO New England111.1 TWh1,629
#16Bonneville Power Administration91.6 TWh167
#17Duke Energy Progress East64.5 TWh565
#18PacifiCorp East60.9 TWh222
#19Salt River Project Agricultural Improvement and Power District60.3 TWh49