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 Jun 2025
Annual Generation 103.1 TWh
Power Plants1,561
Utilities814
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 | 24.7% Water | 6.3% Other Fuel | 4.5% Wind | 3.7% Solar | 1.4% Coal | 0.3%

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

500k500k400k400k300k300k200k200k100k100k00Jul '22Jul '2220232023Jul '23Jul '2320242024Jul '24Jul '2420252025
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List of All ISO New England Power Plants

Displaying Results 101 to 200 of 1,270
Plant NameUtilityLocationAnnual GenerationPlant DateLast UpdateFuel Types
MA BlackstoneCatalyze Blackstone 83 Federal Street Microgrid, LLCBlackstone, MA4 GWhJun 2022Dec 2024 Solar
Syncarpha Blandford Hybrid CSGSyncarpha Blandford, LLCBlandford, MA8 GWhNov 2019Dec 2023 Solar
Pepperidge Farm BloomfieldPepperidge Farm, Inc.- BloomfieldBloomfield, CT15 GWhJul 2008Dec 2024 Natural Gas
Niagara Bottling - BloomfieldWestbound Solar 3, LLCBloomfield, CT5 GWhOct 2022Dec 2024 Solar
Syncarpha Still River, LLC CSGSyncarpha Still River, LLCBolton, MA4 GWhNov 2016Dec 2024 Solar
Bolton PVAES Distributed EnergyBolton, MA7 GWhNov 2013Dec 2024 Solar
Boltonville Hydro AssociatesBoltonville Hydro AssociatesBoltonville, VT3 GWhJun 1984Dec 2024 Water
Penacook Lower FallsBriar-Hydro AssociatesBoscawen, NH17 GWhJul 1983Dec 2024 Water
M Street JetMassachusetts Bay Trans AuthBoston, MA457 MWhApr 1979Dec 2024 Kerosene
Medical Area Total Energy PlantMATEP LLCBoston, MA339 GWhDec 1979Dec 2023 Natural Gas : 99.7%
Meadow SolarAltus Power America Management, LLCBoston, MA4 GWhNov 2016Dec 2024 Solar
Gillette SBMCThe Gillette CompanyBoston, MA60 GWhJan 1971Mar 2025 Natural Gas : 99.9%
Boston Medical Center CHP PlantBoston Medical CenterBoston, MA14 GWhMar 2017Dec 2024 Natural Gas
Garvins FallsCentral Rivers Power NH, LLCBow, NH31 GWhJul 1925Dec 2024 Water
MerrimackGranite Shore PowerBow, NH317 GWhNov 1960Mar 2025 Bituminous Coal : 99.6%
Augusta Road Bowdoin Solar, LLCREA Investments, LLCBowdoin, ME5 GWhJan 2022Dec 2024 Solar
GSPP Boxborough Littleton (MA)GSPP Boxborough Littleton, LLCBoxborough, MA6 GWhDec 2018Dec 2024 Solar
CMEEC - BozrahTesla Inc.Bozrah, CT3 GWhNov 2016Dec 2024 Solar
Alton Road SolarRevity Energy LLCBradford, RI24 GWhNov 2019Dec 2024 Solar
Smith (VT)Green Mountain Power CorpBradford, VT2 GWhNov 1982Dec 2024 Water
Potter Station 2Town of Braintree - (MA)Braintree, MA23 GWhJun 1963Dec 2024 Natural Gas : 93.9% Distillate Fuel Oil : 6.1%
Braintree Landfill SolarAmeresco, Inc - BraintreeBraintree, MA1 GWhNov 2014Dec 2024 Solar
Town of BranfordTesla Inc.Branford, CT2 GWhMay 2018Dec 2024 Solar
BranfordConnecticut Jet Power LLCBranford, CT109 MWhOct 1967Dec 2024 Kerosene
Technology Drive SolarConsolidated Edison Development Inc.Brattleboro, VT3 GWhAug 2014Dec 2024 Solar
Brewer (CSG)Nautilus Solar SolutionsBrewer, ME2 GWhJul 2024Dec 2024 Solar
CVEC Round 4 Brewster Captn Golf CourseFreemans Way Solar Project 2019, LLCBrewster, MA1 GWhFeb 2022Dec 2024 Solar
Brewster LandfillClean Focus Yield, LLCBrewster, MA5 GWhAug 2014Dec 2024 Solar
UI RCP Bridgeport SeasideUnited Illuminating CoBridgeport, CT20 GWhOct 2015Mar 2025 Natural Gas : 88.4% Solar : 11.6%
Bridgeport Fuel Cell, LLCBridgeport Fuel Cell, LLCBridgeport, CT97 GWhNov 2013Dec 2024 Natural Gas
UB Fuel CellUB Fuel CellBridgeport, CT10 GWhMar 2015Dec 2023 Natural Gas
Wheelabrator BridgeportWheelabrator Environmental SystemsBridgeport, CT460 GWhJun 1988Mar 2025 Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Bridgeport StationGeneration Bridge II Connecticut, LLCBridgeport, CT3 TWhJul 1961Mar 2025 Natural Gas : 98.6% Distillate Fuel Oil : 1.4%
Bridgeport Energy ProjectBridgeport Energy LLCBridgeport, CT3 TWhMay 1998Mar 2025 Natural Gas
Bridgewater Complex Co-Generation PlantMassachusetts Department of CorrectionBridgewater, MA1 GWhOct 2015Dec 2024 Natural Gas
Bridgewater Solar CSGMN8 Energy LLCBridgewater, MA4 GWhJul 2015Dec 2024 Solar
Bridgewater Power LPBridgewater Power Co LPBridgewater, NH93 GWhJul 1987Dec 2024 Wood/Wood Waste Solids : 99.5%
205 Sturbridge AAltus Power America Management, LLCBrimfield, MA3 GWhMay 2014Dec 2024 Solar
201 Sturbridge BAltus Power America Management, LLCBrimfield, MA2 GWhMay 2014Dec 2024 Solar
BrimfieldWEB Brimfield Solar LLCBrimfield, MA3 GWhNov 2021Dec 2024 Solar
Bristol Solar One, LLCDG Connecticut III, LLCBristol, CT5 GWhApr 2021Dec 2024 Solar
Covanta Bristol EnergyCovanta Bristol IncBristol, CT109 GWhNov 1987Mar 2025 Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
ME - EDFR - Phase I - BristolOverlook Solar Partners, LLCBristol, ME6 GWhNov 2023Nov 2024 Solar
Ayers IslandCentral Rivers Power NH, LLCBristol, NH40 GWhJul 1925Dec 2024 Water
Newfound HydroelectricEagle Creek Renewable Energy, LLCBristol, NH4 GWhNov 1983Dec 2024 Water
Bristol Landfill SolarNuGen Capital ManagementBristol, RI8 GWhFeb 2024Dec 2024 Solar
Redman North Community SolarAES Distributed EnergyBrockport, NY2 GWhJan 2022Aug 2024 Solar
Redman South Community SolarAES Distributed EnergyBrockport, NY10 GWhJan 2022Dec 2024 Solar
Onyx - Brockton Thatcher Landfill SolarOnyx Asset Services GroupBrockton, MA4 GWhOct 2017Dec 2023 Solar
Brookfield Wire CompanyDynamic Energy Solutions, LLCBrookfield, MA2 GWhMay 2016Dec 2024 Solar
WEB BrookfieldWEB Brookfield Solar LLCBrookfield, MA6 GWhNov 2021Dec 2024 Solar
Quinebaug Lower ProjectQuinebaug Associates LLCBrooklyn, CT10 GWhMar 1990Dec 2023 Water
Brunswick HydroBrookfield White Pine Hydro LLCBrunswick, ME88 GWhFeb 1982Dec 2024 Water
SCS Harpswell 012903 Brunswick, LLCArevon Energy, Inc.Brunswick, ME7 GWhOct 2022Dec 2023 Solar
Spruce Mountain WIndCPV Spruce Mountain Wind LLCBryant Pond, ME54 GWhNov 2011Dec 2024 Wind
Deerfield 3Great River Hydro, LLCBuckland, MA25 GWhJul 1912Dec 2024 Water
Deerfield 4Great River Hydro, LLCBuckland, MA20 GWhJul 1912Dec 2024 Water
Gardners FallsCentral Rivers Power MA, LLCBuckland, MA11 GWhDec 1913Dec 2024 Water
Bucksport Generation LLCBucksport Generation LLCBucksport, ME14 GWhJun 1965Mar 2025 Natural Gas : 98.3% Distillate Fuel Oil : 1.7%
Burlington Solar 1DG Connecticut III, LLCBurlington, CT6 GWhJan 2022Dec 2024 Solar
Burlington GTCity of Burlington Electric - (VT)Burlington, VT358 MWhAug 1971Dec 2024 Distillate Fuel Oil
J C McNeilCity of Burlington Electric - (VT)Burlington, VT202 GWhMay 1984Mar 2025 Wood/Wood Waste Solids : 99.8%
Pittsfield HydroKEI (Maine) Power Management (II) LLCBurnham, ME3 GWhJun 1986Dec 2024 Water
Town of Burrillville Solar CSGStandard SolarBurrillville, RI5 GWhSep 2020Dec 2024 Solar
Nautilus Goat Island Solar LLC (CSG)Nautilus Solar SolutionsBurrillville, RI4 GWhJul 2019Dec 2024 Solar
Kearsarge Smithfield LLCKearsarge Smithfield LLCBurrillville, RI14 GWhMar 2023Dec 2024 Solar
Douglas Pike Solar, LLCNavisun LLCBurrillville, RI2 GWhMay 2023Dec 2023 Solar
West BuxtonBrookfield White Pine Hydro LLCBuxton, ME20 GWhDec 1903Dec 2024 Water
Greene County Meter #1Tesla Inc.Cairo, NY1 GWhJan 2018Dec 2023 Solar
Kendall Square StationKendall Green Energy, LLCCambridge, MA2 TWhMay 1949Mar 2025 Natural Gas : 99.0% Distillate Fuel Oil : 1.0%
Mass Inst Tech Cntrl Utilities/Cogen PltMassachusetts Inst of TechCambridge, MA205 GWhMay 1995Dec 2024 Natural Gas
CanaanCentral Rivers Power NH, LLCCanaan, VT6 GWhJul 1927Dec 2024 Water
Lenox RenewablesLenox Renewables, LLCCanastota, NY5 GWhAug 2021Dec 2024 Solar
Quinebaug SolarQuinebaug Solar, LLCCanterbury, CT81 GWhNov 2021Mar 2025 Solar
Canton GLC Solar, LLCREA Investments, LLCCanton, ME4 GWhMar 2024Dec 2024 Solar
Canton Mountain WindCPV Canton Mountain Wind LLCCanton, ME51 GWhOct 2017Dec 2024 Wind
CantonCaptona Canton LLCCanton, MA6 GWhJul 2012Dec 2024 Solar
CaribouAltus Power America Management, LLCCaribou, ME6 GWhJul 2023Dec 2024 Solar
ME Novel Lighthouse - CarrabassettLuminace Sunbeam Development Holdings, LLCCarrabassett Valley, ME5 GWhNov 2023Dec 2024 Solar
Saddleback Ridge Wind FarmCPV Saddleback Ridge Wind, LLCCarthage, ME83 GWhNov 2014Dec 2024 Wind
Carver MA 1 Community SolarNavisun LLCCarver, MA3 GWhAug 2016Dec 2023 Solar
Spring Street Solar 1 CSGSpring Street Solar 1, LLCCarver, MA3 GWhFeb 2017Dec 2024 Solar
RavenbrookCaptona Ravenbrook LLCCarver, MA7 GWhNov 2013Dec 2024 Solar
Carver CSGAltus Power America Management, LLCCarver, MA4 GWhApr 2019Dec 2024 Solar
196 Tremont St(CSG)196TRE WHAM8 Solar, LLCCarver, MA4 GWhOct 2021Dec 2023 Solar
Ward Solar 1, LLCREA Investments, LLCCarver, MA3 GWhJan 2019Dec 2024 Solar
59 Federal Rd(CSG)59FED WHAM8 Solar, LLCCarver, MA13 GWhOct 2021Dec 2023 Solar
0 Hammond St CSG0HAM WHAM8 Solar, LLCCarver, MA14 GWhSep 2021Dec 2024 Solar
276 Federal Rd(CSG)276FED WHAM8 Solar, LLCCarver, MA10 GWhOct 2021Dec 2024 Solar
ER Sand HillGreenbacker Renewable Energy CorporationCastleton, VT4 GWhOct 2022Dec 2024 Solar
CavendishGreen Mountain Power CorpCavendish, VT830 MWhJan 1907Dec 2024 Water
Kibby Wind FacilityHelix Maine Wind Development, LLCChain of Ponds, ME269 GWhSep 2009Mar 2025 Wind
Charlemont ACharlemont MA, LLCCharlemont, MA3 GWhAug 2021Dec 2023 Solar
Mystic Generating StationConstellation Mystic Power LLCCharlestown, MA2 TWhMay 1969Mar 2024 Natural Gas
Charlestown Wind TurbineMWRA CharlestownCharlestown, MA1 GWhSep 2011Dec 2024 Wind
Charlotte Solar LLC VTAltus Power America Management, LLCCharlotte, VT3 GWhJun 2014Dec 2024 Solar
Partridge Hill Solar HybridAES Distributed EnergyCharlton, MA3 GWhJun 2020Dec 2024 Solar
Sampson Road Community SolarSampson Road Solar, LLCCharlton, MA3 GWhNov 2017Dec 2024 Solar
Incom Solar, LLC CSG38 Degrees North, LLCCharlton, MA4 GWhOct 2017Dec 2024 Solar
Charlton Solar I CSGCharlton Solar I, LLCCharlton, MA5 GWhNov 2014Dec 2024 Solar

Surrounding Balancing Authorities

Balancing Authorities with Similar Net Generation

RankBalancing AuthorityAnnual Net Generation# Power Plants
#7California Independent System Operator191.1 TWh2,051
#8Tennessee Valley Authority158.8 TWh204
#10Florida Power & Light Co.149.0 TWh187
#12New York Independent System Operator130.3 TWh1,191
#13Duke Energy Carolinas111.8 TWh565
#15ISO New England103.1 TWh1,561
#16Bonneville Power Administration81.7 TWh163
#17Duke Energy Progress East65.0 TWh558
#18Salt River Project Agricultural Improvement and Power District58.9 TWh48
#19PacifiCorp East57.6 TWh215