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 #11 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 1 to 100 of 1,306
Plant NameUtilityLocationAnnual GenerationPlant DateLast UpdateFuel Types
Norwich WWTPCity of Norwich - (CT)Norwich, CT1 MWhApr 2006Mar 2024 Distillate Fuel Oil
Signature Breads ChelseaJDC 65R Owner, LLCChelsea, MA2 MWhApr 2019Dec 2023 Distillate Fuel Oil
Mechanic Street (CSG)Nautilus Solar SolutionsPresque Island, ME3 MWhNov 2024Dec 2024 Solar
Missile Street (CSG)Nautilus Solar SolutionsPresque Island, ME4 MWhNov 2024Dec 2024 Solar
118 EchoMadison Energy Investments LLCMashpee, MA4 MWhJun 2023Dec 2024 Solar
Limestone CSG 1 LLCLimestone CSG 1 LLCLimestone, ME5 MWhNov 2024Dec 2024 Solar
Exeter Ten (CSG)Nautilus Solar SolutionsExeter, RI10 MWhNov 2024Dec 2024 Solar
Raffia Road Solar ProjectNJR Clean Energy Ventures CorporationEnfield, CT11 MWhNov 2024Dec 2024 Solar
Indeck Jonesboro Energy CenterStored Solar J&WEJonesboro, ME16 MWhNov 1987Jun 2025 Gaseous Propane : 66.7% Wood/Wood Waste Solids : 33.3%
ME - Novel (Lighthouse Ph I) Mars HillMars Hill Road Solar Farm, LLCWestfield, ME22 MWhJul 2024Dec 2024 Solar
ShrewsburyTown of Shrewsbury - (MA)Shrewsbury, MA34 MWhOct 1969Dec 2024 Distillate Fuel Oil
Ball Mountain HydroEagle Creek Renewable Energy, LLCJamaica, VT61 MWhMar 2016Dec 2024 Water
Limestone CSG 2 LLCLimestone CSG 2 LLCLimestone, ME62 MWhOct 2024Dec 2024 Solar
Lebanon CSG LLCDimension Energy LLCLebanon, ME64 MWhNov 2024Dec 2024 Solar
ISM Solar Shepherd AcresNavisun LLCSouth Paris, ME65 MWhNov 2024Dec 2024 Solar
Framingham State University PlantFramingham State UniversityFramingham, MA73 MWhMay 1974Jul 2025 Solar : 67.1% Distillate Fuel Oil : 32.9%
Walden Solar Maine VWalden Solar Maine V LLCLeeds, ME76 MWhNov 2024Dec 2024 Solar
RutlandGreen Mountain Power CorpRutland City, VT84 MWhNov 1962Mar 2024 Distillate Fuel Oil
Thundermist HydroCity of WoonsocketProvidence, RI90 MWhMay 1981Dec 2024 Water
CCSU Co-Gen-STBY GenCentral Connecticut State UniversityNew Britain, CT90 MWhSep 1993Dec 2024 Natural Gas
Wilkins StationTown of Marblehead - (MA)Marblehead, MA94 MWhOct 1975Dec 2024 Distillate Fuel Oil
Mars HillGreenbacker Renewable Energy CorporationMars Hill, ME95 MWhOct 2024Dec 2024 Solar
Robbins LumberRobbins Lumber IncSearsmont, ME97 MWhDec 1980Dec 2023 Distillate Fuel Oil
BranfordConnecticut Jet Power LLCBranford, CT109 MWhOct 1967Dec 2024 Kerosene
Cape Gas TurbineFPL Energy Cape LLCPortland, ME111 MWhDec 1969Dec 2024 Distillate Fuel Oil
Franklin DriveConnecticut Jet Power LLCTorrington, CT118 MWhOct 1968Dec 2024 Kerosene
Swaggertown Solar IGreen Street Power PartnersGlenville, NY122 MWhOct 2024Dec 2024 Solar
Indian Orchard Plant 1Solutia Inc-IndianSpringfield, MA137 MWhApr 1985Aug 2025 Natural Gas
Cadys FallsVillage of Morrisville - (VT)Morrisville, VT139 MWhJul 1914Dec 2024 Water
BNRG North Anson (CSG)Nautilus Solar SolutionsNorth Anson, ME143 MWhOct 2024Dec 2024 Solar
Orbit Energy RIAnaergiaJohnston, RI144 MWhJun 2017Dec 2024 Other Biomass Gas
Torrington TerminalConnecticut Jet Power LLCTorrington, CT146 MWhOct 1967Dec 2024 Kerosene
Fishers Island 1Connecticut Mun Elec Engy CoopFisher's Island, NY151 MWhNov 2010Dec 2024 Distillate Fuel Oil
FedEx MiddletownVCP Realty, LLCMiddletown, CT151 MWhOct 2024Dec 2024 Solar
Three Rivers Solar LLCASD Three Rivers Road MA Solar LLCWilbraham, MA154 MWhOct 2024Dec 2024 Solar
BNRG Norridgewock (CSG)Nautilus Solar SolutionsNorridgewock, ME171 MWhOct 2024Dec 2024 Solar
High Street StationTown of Ipswich - (MA)Ipswich, MA197 MWhMay 1937Dec 2024 Natural Gas : 91.9% Distillate Fuel Oil : 8.1%
Cherry StreetTown of Hudson - (MA)Hudson, MA199 MWhApr 1951Dec 2024 Natural Gas : 64.2% Distillate Fuel Oil : 35.8%
Jewett City 1Connecticut Mun Elec Engy CoopJewett City, CT205 MWhJan 2010Dec 2024 Distillate Fuel Oil
BRNG Nicolin (CSG)Nautilus Solar SolutionsEllsworth, ME205 MWhNov 2024Dec 2024 Solar
Dynamic - Norridgewock Martin Stream (CSG)Nautilus Solar SolutionsNorridgewock, ME206 MWhOct 2024Dec 2024 Solar
AscutneyGreen Mountain Power CorpWeatherfield, VT228 MWhJul 1961Jun 2025 Distillate Fuel Oil
Sanford CGANautilus Solar SolutionsSanford, ME230 MWhMay 2022Dec 2024 Solar
BJ's Wholesale Club, Inc- UxbridgeTesla Inc.Uxbridge, MA270 MWhJun 2017Dec 2024 Solar
Exelon Framingham LLCConstellation Power, IncFramingham, MA273 MWhAug 1969Dec 2024 Distillate Fuel Oil
Colchester 16Green Mountain Power CorpColchester, VT279 MWhSep 1965Dec 2024 Distillate Fuel Oil
Burlington GTCity of Burlington Electric - (VT)Burlington, VT358 MWhAug 1971Dec 2024 Distillate Fuel Oil
Gary Court 1 & 2Connecticut Mun Elec Engy CoopGroton, CT422 MWhJun 2010Dec 2024 Distillate Fuel Oil
Lost NationGranite Shore PowerGroveton, NH422 MWhAug 1969Dec 2024 Distillate Fuel Oil
Water Treatment 1 & 2Connecticut Mun Elec Engy CoopGroton, CT425 MWhSep 2010Aug 2025 Distillate Fuel Oil
ME - EDF - Phase II - BelfastShining Solar Partners, LLCBelfast, ME427 MWhAug 2024Dec 2024 Solar
M Street JetMassachusetts Bay Trans AuthBoston, MA457 MWhApr 1979Dec 2024 Kerosene
Bridge Street 1 & 2Connecticut Mun Elec Engy CoopGroton, CT458 MWhJun 2010Dec 2024 Distillate Fuel Oil
Lebanon Pines 1 & 2Connecticut Mun Elec Engy CoopLebanon, CT471 MWhMar 2010Dec 2024 Distillate Fuel Oil
Dynamic - Leeds Solar (CSG)Nautilus Solar SolutionsLeeds, ME473 MWhOct 2024Dec 2024 Solar
White LakeGranite Shore PowerTamworth, NH484 MWhJun 1968Dec 2024 Jet Fuel
LNG 1 & 2Connecticut Mun Elec Engy CoopNorwich, CT494 MWhMar 2010Dec 2024 Distillate Fuel Oil
Norfolk Landfill Solar ProjectNJR Clean Energy Ventures CorporationNorfolk, CT494 MWhNov 2024Dec 2024 Solar
Front StreetCity of Chicopee - (MA)Chicopee, MA497 MWhDec 1977Dec 2024 Distillate Fuel Oil
Dynamic - Exeter Solar CSGAltus Power America Management, LLCExeter, ME524 MWhAug 2024Dec 2024 Solar
Centech Gas GeneratorTown of Shrewsbury - (MA)Shrewsbury, MA537 MWhMar 2019Dec 2024 Natural Gas
Dairy FarmGreenbacker Renewable Energy CorporationAnson, ME542 MWhSep 2024Dec 2024 Solar
W K SandersVillage of Morrisville - (VT)Hyde Park, VT548 MWhJun 1983Dec 2024 Water
SchillerGranite Shore PowerPortsmouth, NH578 MWhSep 1952Aug 2025 Jet Fuel
Fort Hill 1, 2, 3 & 4Connecticut Mun Elec Engy CoopUncasville, CT616 MWhJul 2010Aug 2025 Distillate Fuel Oil
Cos CobConnecticut Jet Power LLCGreenwich, CT676 MWhAug 1969Dec 2024 Kerosene
Stafford Hill Solar HybridGreen Mountain Power CorpRutland, VT731 MWhFeb 2015Aug 2025 Solar
Cosgrove Intake and Power StationMassachusetts Water Res AuthClinton, MA738 MWhDec 1968Dec 2024 Water
Spring Hill RoadAES Distributed EnergyBarre, MA744 MWhNov 2015Aug 2025 Solar
1 CommercialMadison Energy Investments LLCSharon, MA770 MWhAug 2023Dec 2024 Solar
Backus Microgrid ProjectConnecticut Mun Elec Engy CoopNorwich, CT800 MWhJul 2014Aug 2025 Distillate Fuel Oil
Silver Lake Solar Photovoltaic FacilityWestern Massachusetts Electric CompanyPittsfield, MA805 MWhNov 2010Dec 2024 Solar
ME Novel Lighthouse - Penobscot CSGLuminace Sunbeam Development Holdings, LLCPatten, ME812 MWhAug 2024Dec 2024 Solar
CavendishGreen Mountain Power CorpCavendish, VT830 MWhJan 1907Dec 2024 Water
Park SolarEcos Energy LLCWoodbridge, CT866 MWhNov 2023Dec 2024 Solar
CMEEC - Rogers Rd SolarTesla Inc.Norwich, CT875 MWhJan 2017Dec 2024 Solar
Wellesley College Central Utility PlantWellesley CollegeWellesley, MA889 MWhMay 1985Dec 2024 Natural Gas
Alexander Road SolarRPNY Solar 7, LLCBatavia, NY943 MWhJun 2024Dec 2024 Solar
Ottauquechee HydroGreen Mountain Power CorpN. Hartland, VT978 MWhMar 1983Dec 2024 Water
NEDC Solar SiteMassachusetts Electric CoWhitinsville, MA979 MWhMay 2010Dec 2024 Solar
Dynamic - Enfield Hammett Road CSGAltus Power America Management, LLCEnfield, ME984 MWhAug 2024Dec 2024 Solar
WYM 1250 Palmer LLCCVI CleanCapital Solar 6Palmer, MA1 GWhAug 2013Dec 2024 Solar
IOS - MEW Phase 1Madison Energy Holdings LLCMadison, ME1 GWhDec 2016Dec 2024 Solar
Clemons Road SolarRPNY Solar 4, LLCMinoa, NY1 GWhJun 2024Dec 2024 Solar
North Smithfield Solar Power 1AEP Onsite Partners, LLCNorth Smithfield, RI1 GWhNov 2018Dec 2024 Solar
UMass BostonMSS Energy Holdings, LLC (d.b.a. Calibrant Energy)Dorchester, MA1 GWhDec 1971Dec 2024 Solar
Advance Stores Company, IncTesla Inc.Enfield, CT1 GWhOct 2014Dec 2024 Solar
Berlin 5Green Mountain Power CorpBerlin, VT1 GWhMay 1972Aug 2025 Kerosene
CVEC Round 4 Brewster Captn Golf CourseFreemans Way Solar Project 2019, LLCBrewster, MA1 GWhFeb 2022Dec 2024 Solar
MA Solar Storage 1 HybridOrigis Energy USA, IncSterling, MA1 GWhFeb 2018Dec 2024 Solar
Bridgewater Complex Co-Generation PlantMassachusetts Department of CorrectionBridgewater, MA1 GWhOct 2015Dec 2024 Natural Gas
Conn Mun Electric Energy CoopTesla Inc.Norwich, CT1 GWhNov 2016Dec 2024 Solar
Holliston Solar CSGMN8 Energy LLCHolliston, MA1 GWhJun 2015Dec 2024 Solar
Wareham Solar PVNSTAR Electric CompanyWareham, MA1 GWhNov 2018Dec 2024 Solar
Haverhill Solar Power ProjectMassachusetts Electric CoHaverhill, MA1 GWhNov 2010Dec 2024 Solar
VPPSA Project 10Vermont Public Power Supply AuthoritySwanton, VT1 GWhApr 2010Dec 2024 Distillate Fuel Oil
Hartford Landfill Solar EGFMaterials Innovation Recycling AuthorityHartford, CT1 GWhMay 2014Dec 2024 Solar
Randall Road Solar IIGreen Street Power PartnersBallston Spa, NY1 GWhJun 2024Dec 2024 Solar
Browne Solar LLCCVI CleanCapital Solar 1 LLCPalmer, MA1 GWhMar 2014Dec 2024 Solar
Braintree Landfill SolarAmeresco, Inc - BraintreeBraintree, MA1 GWhNov 2014Dec 2024 Solar

Surrounding Balancing Authorities

Balancing Authorities with Similar Net Generation

RankBalancing AuthorityAnnual Net Generation# Power Plants
#7California Independent System Operator188.1 TWh2,075
#9Tennessee Valley Authority161.5 TWh204
#10Florida Power & Light Co.148.6 TWh187
#12New York Independent System Operator131.6 TWh1,211
#13Duke Energy Carolinas112.7 TWh565
#15ISO New England105.5 TWh1,577
#16Bonneville Power Administration80.5 TWh163
#17Duke Energy Progress East64.2 TWh559
#18PacifiCorp East61.0 TWh216
#19Salt River Project Agricultural Improvement and Power District60.2 TWh48