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 Nov 2025
Annual Generation 105.5 TWh
Power Plants1,577
Utilities819
Ranked #15 out of 65 in terms of net annual generation
Ranked #12 out of 53 in terms of annual generation from natural gas
Power Plant Types Natural Gas | 55.8% Nuclear | 26% Water | 5% Other Fuel | 4.4% Wind | 4% Solar | 1.5% Coal | 0.4%

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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 101 to 200 of 1,306
Plant NameUtilityLocationAnnual GenerationPlant DateLast UpdateFuel Types
GMP Solar - HartfordGreen Mountain Power CorpHartford, VT7 GWhNov 2016Sep 2025 Solar
GMP Solar - WillistonGreen Mountain Power CorpWilliston, VT6 GWhOct 2016Sep 2025 Solar
GMP Solar - WilliamstownGreen Mountain Power CorpWilliamstown, VT7 GWhNov 2016Sep 2025 Solar
Weaver WindWeaver Wind, LLC (Longroad)Township 16, ME227 GWhNov 2020Sep 2025 Wind
Eastern Maine Medical CenterEastern Maine Medical CenterBangor, ME31 GWhSep 2006Sep 2025 Natural Gas
GMP Solar - Panton HybridGreen Mountain Power CorpPanton, VT9 GWhNov 2016Sep 2025 Solar : 99.1% Electricity used for energy storage : 0.9%
GMP Solar - RichmondGreen Mountain Power CorpRichmond, VT3 GWhSep 2016Sep 2025 Solar
Salem Harbor Power Development LPSalem Harbor Power Development LPSalem, MA2 TWhApr 2018Sep 2025 Natural Gas
Water Treatment 1 & 2Connecticut Mun Elec Engy CoopGroton, CT434 MWhSep 2010Sep 2025 Distillate Fuel Oil
Stafford Hill Solar HybridGreen Mountain Power CorpRutland, VT675 MWhFeb 2015Sep 2025 Solar
UCONN Cogen FacilityUniversity of ConnecticutStorrs, CT124 GWhFeb 2006Sep 2025 Natural Gas : 98.9% Distillate Fuel Oil : 1.1%
William F Wyman HybridFPL Energy Wyman LLCYarmouth, ME66 GWhDec 1956Sep 2025 Residual Fuel Oil : 99.2% Distillate Fuel Oil : 0.8%
UI RCP New Haven Fuel CellUnited Illuminating CoNew Haven, CT13 GWhJul 2015Sep 2025 Natural Gas
UNH 7.9 MW PlantEmcor Energy ServicesDurham, NH55 GWhAug 2006Sep 2025 Landfill Gas : 73.7% Natural Gas : 25.4% Distillate Fuel Oil : 0.9%
Rand Whitney CHP PlantRand Whitney Containerboard L.P.Montville, CT135 GWhMar 2005Sep 2025 Natural Gas
Bingham WindOnward EnergyBingham, ME489 GWhNov 2016Sep 2025 Wind
West Greenwich SolarConsolidated Edison Development Inc.West Greenwich, RI3 GWhApr 2013Sep 2025 Solar
Kendall Square StationKendall Green Energy, LLCCambridge, MA2 TWhMay 1949Sep 2025 Natural Gas : 99.1% Distillate Fuel Oil : 0.9%
New England Wind LLCAvangrid Power LLCFlorida, MA75 GWhNov 2012Sep 2025 Wind
CanalCanal Generating LLCSandwich, MA352 GWhMay 1968Sep 2025 Natural Gas : 59.2% Residual Fuel Oil : 37.0% Distillate Fuel Oil : 3.8%
Deerfield Wind LLCAvangrid Power LLCSearsburg, VT95 GWhNov 2017Sep 2025 Wind
Georgia Mountain Community Wind FarmGreenbacker Renewable Energy CorporationMilton, VT30 GWhNov 2012Sep 2025 Wind
Dry Bridge Solar (Brown University)MN8 Energy LLCNorth Kingstown, RI69 GWhOct 2023Sep 2025 Solar
Southbridge SolarAES Distributed EnergySouthbridge, MA2 GWhFeb 2016Sep 2025 Solar
UI RCP Bridgeport SeasideUnited Illuminating CoBridgeport, CT21 GWhOct 2015Sep 2025 Natural Gas : 84.6% Solar : 15.4%
Lempster Wind LLCAvangrid Power LLCLempster, NH68 GWhNov 2008Sep 2025 Wind
Sheffield WindEvergreen Wind, LLCSheffield, VT73 GWhSep 2011Sep 2025 Wind
AscutneyGreen Mountain Power CorpWeatherfield, VT113 MWhJul 1961Sep 2025 Distillate Fuel Oil
Manchester StreetManchester Street, LLC.Providence, RI2 TWhAug 1995Sep 2025 Natural Gas : 98.5% Distillate Fuel Oil : 1.5%
Oakfield Wind ProjectOnward EnergyCity of Oakfield, ME367 GWhSep 2015Sep 2025 Wind
SchillerGranite Shore PowerPortsmouth, NH590 MWhSep 1952Sep 2025 Jet Fuel
MerrimackGranite Shore PowerBow, NH364 GWhNov 1960Sep 2025 Bituminous Coal : 99.7%
Kleen Energy Systems ProjectKleen Energy Systems, LLCMiddletown, CT3 TWhJun 2011Sep 2025 Natural Gas : 99.3% Distillate Fuel Oil : 0.7%
Kibby Wind FacilityHelix Maine Wind Development, LLCChain of Ponds, ME262 GWhSep 2009Sep 2025 Wind
DWW Solar llDWW Solar ll LLCSimsbury, CT52 GWhNov 2019Sep 2025 Solar
Bucksport Generation LLCBucksport Generation LLCBucksport, ME10 GWhJun 1965Aug 2025 Natural Gas : 97.3% Distillate Fuel Oil : 2.7%
NewingtonGranite Shore PowerNewington, NH95 GWhMay 1974Aug 2025 Natural Gas : 60.0% Residual Fuel Oil : 39.5% Distillate Fuel Oil : 0.6%
Indian Orchard Plant 1Solutia Inc-IndianSpringfield, MA137 MWhApr 1985Aug 2025 Natural Gas
Indeck Jonesboro Energy CenterStored Solar J&WEJonesboro, ME16 MWhNov 1987Jun 2025 Gaseous Propane : 66.7% Wood/Wood Waste Solids : 33.3%
Derby Fuel CellDerby Fuel Cell LLCDerby, CT106 GWhDec 2023Dec 2024 Natural Gas
Syncarpha Halifax Hybrid CSGSyncarpha Halifax, LLCHalifax, MA3 GWhNov 2020Dec 2024 Solar
WED GW Solar, LLCCleanCapital HoldingsLincoln, RI4 GWhDec 2018Dec 2024 Solar
PalmerAES Distributed EnergyPalmer, MA6 GWhSep 2019Dec 2024 Solar
Tanglewood Circle Solar 1 LLCTanglewood Circle Solar 1 LLCBecket, MA8 GWhOct 2018Dec 2024 Solar
Syncarpha Leicester Hybrid CSGSyncarpha Leicester, LLCLeicester, MA5 GWhMay 2021Dec 2024 Solar
Syncarpha Westminster Hybrid CSGSyncarpha Westminster, LLCWestminster, MA7 GWhOct 2022Dec 2024 Solar
Hadley 2 Solar, LLC CSGHadley 2 Solar, LLCHadley, MA3 GWhNov 2016Dec 2024 Solar
Syncarpha Puddon II Hybrid CSGSyncarpha Puddon II, LLCNorthbridge, MA9 GWhFeb 2021Dec 2024 Solar
Syncarpha Puddon I Hybrid CSGSyncarpha Puddon I, LLCNorthbridge, MA9 GWhFeb 2021Dec 2024 Solar
East Bridgewater SolarAltus Power America Management, LLCEast Bridgewater, MA3 GWhOct 2017Dec 2024 Solar
Tolland Solar NG LLCNuGen Capital ManagementTolland, MA5 GWhSep 2014Dec 2024 Solar
Griffin Road Solar, LLC CSGGriffin Road Solar, LLCCharlton, MA3 GWhFeb 2018Dec 2024 Solar
Ashby Solar, LLC CSGAshby Solar, LLCFitchburg, MA3 GWhJun 2018Dec 2024 Solar
Dudley Solar CSGDudley Solar, LLCDudley, MA3 GWhJul 2017Dec 2024 Solar
WilliamsburgAES Distributed EnergyGoshen, MA7 GWhJun 2019Dec 2024 Solar
ALDI DC 2PowerflexSouth Windsor, CT1 GWhJan 2018Dec 2024 Solar
Monson Solar, LLCMonson Solar, LLCMonson, MA3 GWhJul 2017Dec 2024 Solar
West Water StreetCity of TauntonTaunton, MA2 GWhDec 2017Dec 2024 Distillate Fuel Oil
Westminster Renewables, LLC CSGWestminster Renewables, LLCWestminster, MA2 GWhSep 2018Dec 2024 Solar
Syncarpha Tewksbury Hybrid CSGSyncarpha Tewksbury, LLCTewksbury, MA4 GWhJan 2022Dec 2024 Solar
Manchester Community College EastOnyx Asset Services GroupManchester, CT2 GWhSep 2018Dec 2024 Solar
Plainfield Community Solar LLCPlainfield Solar LLCPlainfield, MA3 GWhJan 2019Dec 2024 Solar
Kearsarge GillKearsarge Gill LLCGill, MA3 GWhDec 2017Dec 2024 Solar
Manchester Community College NorthOnyx Asset Services GroupGreat Path, CT1 GWhSep 2018Dec 2024 Solar
Town of Burrillville Solar CSGStandard SolarBurrillville, RI5 GWhSep 2020Dec 2024 Solar
Washburn Road SolarREA Investments, LLCFreetown, MA3 GWhNov 2018Dec 2024 Solar
Happy Hollow CSG HybridREA Investments, LLCWinchendon, MA9 GWhSep 2019Dec 2024 Solar
Kearsarge SKSC2 LLCKearsarge SKSC2 LLCSouth Kingstown, RI6 GWhSep 2018Dec 2024 Solar
Kearsarge GBKearsarge GB LLCGreat Barrington, MA3 GWhJul 2018Dec 2024 Solar
Westtown CSGAltus Power America Management, LLCWesttown, NY3 GWhApr 2019Dec 2024 Solar
Winchendon Landfill SolarOnyx Asset Services GroupWinchendon, MA3 GWhSep 2018Dec 2024 Solar
10 Briggs Solar NG, LLC (East)NuGen Capital ManagementEast Greenwich, RI7 GWhMay 2021Dec 2024 Solar
WestminsterMN8 Energy LLCWestminster, VT3 GWhNov 2016Dec 2024 Solar
GSPP Devens, LLCGreen Street Power PartnersAyer, MA3 GWhDec 2018Dec 2024 Solar
GSPP Terrawatt Westfield LLC CSGGreen Street Power PartnersWestfield, MA6 GWhJan 2019Dec 2024 Solar
Carver CSGAltus Power America Management, LLCCarver, MA4 GWhApr 2019Dec 2024 Solar
GSPP Raynham TMLP, LLC CSGGreen Street Power PartnersRaynham, MA4 GWhJan 2019Dec 2024 Solar
Ajax Solar, LLC (MA)Green Street Power PartnersWest Bridgewater, MA4 GWhNov 2017Dec 2024 Solar
Hopkinton CSGAltus Power America Management, LLCHopkinton, MA3 GWhMar 2019Dec 2024 Solar
Kearsarge SKSC1 LLCKearsarge SKSC1 LLCSouth Kingstown, RI6 GWhSep 2018Dec 2024 Solar
Bridgewater Complex Co-Generation PlantMassachusetts Department of CorrectionBridgewater, MA1 GWhOct 2015Dec 2024 Natural Gas
BWC Pocasset RiverBWC Pocasset River, LLCWareham, MA2 GWhNov 2018Dec 2024 Solar
Kearsarge UxbridgeKearsarge Uxbridge LLCUxbridge, MA3 GWhAug 2018Dec 2024 Solar
Nextsun Energy LittletonGreenbacker Renewable Energy CorporationLittleton, MA5 GWhSep 2013Dec 2024 Solar
RoxWindRoxWind LLCRoxbury, ME36 GWhOct 2021Dec 2024 Wind
MHG WallingfordStandard SolarWallingford, VT4 GWhNov 2019Dec 2024 Solar
Kearsarge MontagueKearsarge Montague LLCMontague, MA7 GWhMay 2018Dec 2024 Solar
Coventry Clean Energy CorporationWashington Electric Coop - (VT)Coventry, VT49 GWhJun 2005Dec 2024 Landfill Gas
Adams SolarEcos Energy LLCLebanon, CT2 GWhFeb 2018Dec 2024 Solar
Plymouth SolarNSTAR Electric CompanyPlymouth, MA1 GWhMay 2018Dec 2024 Solar
GD West Greenwich Victory I, LLCGD West Greenwich Victory I, LLCWest Greenwich, RI3 GWhNov 2019Dec 2024 Solar
Nautilus Goat Island Solar LLC (CSG)Nautilus Solar SolutionsBurrillville, RI4 GWhJul 2019Dec 2024 Solar
CED Northampton Solar LLC HybridConsolidated Edison Development Inc.Northampton, MA7 GWhNov 2019Dec 2024 Solar
Holiday Hill Community WindGreenbacker Renewable Energy CorporationRussell, MA10 GWhNov 2019Dec 2024 Wind
GD Richmond Buttonwoods I, LLCGD Richmond Buttonwoods I, LLCRichmond, RI2 GWhNov 2019Dec 2024 Solar
GSPP Boxborough Littleton (MA)GSPP Boxborough Littleton, LLCBoxborough, MA6 GWhDec 2018Dec 2024 Solar
Gardner - Otter River RoadOtter River Road Solar LLCGardner, MA4 GWhSep 2019Dec 2024 Solar
Kearsarge WilmingtonKearsarge Wilmington LLCWilmington, MA2 GWhNov 2017Dec 2024 Solar
BWC Harlow BrookBWC Harlow Brook, LLCWareham, MA2 GWhNov 2018Dec 2024 Solar
BWC Wareham RiverBWC Wareham River, LLCWareham, MA2 GWhNov 2018Dec 2024 Solar

Surrounding Balancing Authorities

Balancing Authorities with Similar Net Generation

RankBalancing AuthorityAnnual Net Generation# Power Plants
#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
#17Duke Energy Progress East64.3 TWh559
#18PacifiCorp East61.1 TWh216
#19Salt River Project Agricultural Improvement and Power District60.0 TWh48