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 701 to 800 of 1,367
Plant NameUtilityLocationAnnual GenerationPlant DateLast UpdateFuel Types
Main Street Solar ProjectGreenbacker Renewable Energy CorporationRutland, VT2 GWhNov 2014Dec 2025 Solar
GSPP Terrawatt Westfield LLC CSGGreen Street Power PartnersWestfield, MA6 GWhJan 2019Dec 2025 Solar
CP Middletown Solar II LLCGreen Street Power PartnersMiddletown, CT2 GWhNov 2019Dec 2025 Solar
CP Middletown Solar I LLCGreen Street Power PartnersMiddletown, CT2 GWhNov 2019Dec 2025 Solar
GSPP Gilman, LLCGreen Street Power PartnersLunenburg, VT3 GWhAug 2018Dec 2025 Solar
Ajax Solar, LLC (MA)Green Street Power PartnersWest Bridgewater, MA4 GWhNov 2017Dec 2025 Solar
GSPP Devens, LLCGreen Street Power PartnersAyer, MA3 GWhDec 2018Dec 2025 Solar
GSPP Raynham TMLP, LLC CSGGreen Street Power PartnersRaynham, MA4 GWhJan 2019Dec 2025 Solar
Swaggertown Solar IGreen Street Power PartnersGlenville, NY4 GWhOct 2024Dec 2025 Solar
Swaggertown Solar IIGreen Street Power PartnersGlenville, NY7 GWhAug 2024Dec 2025 Solar
GSPP 7024 Fox Rd, LLCGreen Street Power PartnersMarcy, NY6 GWhApr 2023Dec 2025 Solar
GSPP 409 Ferris RoadGreen Street Power PartnersLawrence, NY8 GWhNov 2024Dec 2025 Solar
GSPP NESV, LLCGreen Street Power PartnersAttleboro, MA2 GWhFeb 2023Dec 2025 Solar
GSPP 4643 Twelve Corners Road, LLCGreen Street Power PartnersAuburn, NY8 GWhMay 2023Dec 2025 Solar
GSPP 126 Little Bow Rd N, LLCGreen Street Power PartnersGouverneur, NY7 GWhNov 2023Dec 2025 Solar
GSPP 126 Little Bow Rd S, LLCGreen Street Power PartnersGouverneur, NY7 GWhNov 2023Dec 2025 Solar
Saratoga Solar III, LLCGreen Street Power PartnersMiddle Grove, NY5 GWhNov 2023Dec 2025 Solar
Saratoga Solar IV, LLCGreen Street Power PartnersRock City Falls, NY5 GWhSep 2023Dec 2025 Solar
GSPP 641 Ferris Road WestGreen Street Power PartnersLawrence, NY4 GWhNov 2024Dec 2025 Solar
Randall Road Solar IGreen Street Power PartnersBallston Spa, NY5 GWhJun 2024Dec 2025 Solar
Randall Road Solar IIGreen Street Power PartnersBallston Spa, NY3 GWhJun 2024Dec 2025 Solar
Green Providence Wind II, LLCGreen Providence Wind II, LLCProvidence, RI5 GWhNov 2021Dec 2025 Wind
Green Providence Wind I, LLCGreen Providence Wind I, LLCProvidence, RI2 GWhNov 2021Dec 2025 Wind
SalisburyGreen Mountain Power CorpSalisbury, VT2 GWhJan 1917Dec 2025 Water
Salmon FallsGreen Mountain Power CorpSouth Berwick, ME2 GWhJun 1986Dec 2025 Water
PittsfordGreen Mountain Power CorpPittsford, VT8 GWhJan 1914Dec 2025 Water
West Danville 15Green Mountain Power CorpDanville, VT2 GWhDec 1916Dec 2025 Water
BeldensGreen Mountain Power CorpNew Haven, VT6 GWhJul 1913Dec 2025 Water
Carver FallsGreen Mountain Power CorpHampton, NY4 GWhJan 1922Dec 2025 Water
Gorge 18Green Mountain Power CorpSouth Burlington, VT15 GWhDec 1927Dec 2025 Water
ProctorGreen Mountain Power CorpProctor, VT28 GWhJul 1905Dec 2025 Water
Vergennes 9Green Mountain Power CorpVergennes, VT8 GWhDec 1911Dec 2025 Water
Waterbury 22Green Mountain Power CorpWaterbury, VT11 GWhMay 1953Dec 2025 Water
Bolton FallsGreen Mountain Power CorpDuxbury, VT6 GWhOct 1986Dec 2025 Water
Searsburg Wind TurbineGreen Mountain Power CorpSearsburg, VT10 GWhMay 1997May 2026 Wind
Silver Lake (VT)Green Mountain Power CorpSalisbury, VT5 GWhJan 1917Dec 2025 Water
Deweys MillGreen Mountain Power CorpWhite River Jct., VT2 GWhMay 1989Dec 2025 Water
Middlesex 2Green Mountain Power CorpMoretown, VT6 GWhDec 1927Dec 2025 Water
Marshfield 6Green Mountain Power CorpMarshfield, VT4 GWhDec 1926Dec 2025 Water
Essex Junction 19Green Mountain Power CorpEssex Junction, VT34 GWhDec 1916May 2026 Water : 98.8% Distillate Fuel Oil : 1.2%
Colchester 16Green Mountain Power CorpColchester, VT310 MWhSep 1965Dec 2025 Distillate Fuel Oil
Berlin 5Green Mountain Power CorpBerlin, VT2 GWhMay 1972May 2026 Kerosene
WeybridgeGreen Mountain Power CorpWeybridge, VT10 GWhJan 1951Dec 2025 Water
MiltonGreen Mountain Power CorpMilton, VT34 GWhJan 1929Dec 2025 Water
Kingdom Community WindGreen Mountain Power CorpLowell, VT164 GWhOct 2012May 2026 Wind
GMP Solar/Storage-Essex HybridGreen Mountain Power CorpEssex, VT7 GWhAug 2019May 2026 Solar
GMP Solar/Storage-Ferrisburgh HybridGreen Mountain Power CorpFerrisburgh, VT8 GWhAug 2019May 2026 Solar
GMP Solar/Storage-Milton HybridGreen Mountain Power CorpMilton, VT7 GWhAug 2019May 2026 Solar
East BarnetGreen Mountain Power CorpBarnet, VT5 GWhAug 1984Dec 2025 Water
GMP Solar - WilliamstownGreen Mountain Power CorpWilliamstown, VT7 GWhNov 2016May 2026 Solar
GMP Solar - WillistonGreen Mountain Power CorpWilliston, VT6 GWhOct 2016May 2026 Solar
GMP Solar - HartfordGreen Mountain Power CorpHartford, VT7 GWhNov 2016May 2026 Solar
Mascoma HydroGreen Mountain Power CorpW. Lebanon, NH202 MWhNov 1988Dec 2025 Water
RollinsfordGreen Mountain Power CorpRollinsford, NH3 GWhSep 1986Dec 2025 Water
EHC West HopkintonGreen Mountain Power CorpWest Hopkinton, NH1 GWhJun 1985Dec 2025 Water
Huntington FallsGreen Mountain Power CorpWeybridge, VT12 GWhSep 1988Dec 2025 Water
Somersworth Lower Great DamGreen Mountain Power CorpSomersworth, NH498 MWhJun 1985Dec 2025 Water
Lower MiddleburyGreen Mountain Power CorpMiddlebury Lower, VT5 GWhJul 1917Dec 2025 Water
AscutneyGreen Mountain Power CorpWeatherfield, VT437 MWhJul 1961May 2026 Distillate Fuel Oil
Ottauquechee HydroGreen Mountain Power CorpN. Hartland, VT3 GWhMar 1983Dec 2025 Water
Stafford Hill Solar HybridGreen Mountain Power CorpRutland, VT390 MWhFeb 2015May 2026 Solar
Smith (VT)Green Mountain Power CorpBradford, VT2 GWhNov 1982Dec 2025 Water
CavendishGreen Mountain Power CorpCavendish, VT1 GWhJan 1907Dec 2025 Water
GMP Solar - RichmondGreen Mountain Power CorpRichmond, VT3 GWhSep 2016May 2026 Solar
GMP Solar - Panton HybridGreen Mountain Power CorpPanton, VT8 GWhNov 2016May 2026 Solar
PetersonGreen Mountain Power CorpMilton, VT25 GWhJan 1948Dec 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
ME-EDFR-Phase I-WoolwichGreen Mile Solar, LLCWoolwich, ME8 GWhAug 2023Dec 2025 Solar
Deerfield 2Great River Hydro, LLCConway, MA29 GWhJul 1913Dec 2025 Water
ShermanGreat River Hydro, LLCRowe, MA28 GWhNov 1926Dec 2025 Water
Deerfield 4Great River Hydro, LLCBuckland, MA21 GWhJul 1912Dec 2025 Water
HarrimanGreat River Hydro, LLCWhitingham, VT98 GWhApr 1924Dec 2025 Water
Bellows FallsGreat River Hydro, LLCBellow Falls, VT194 GWhFeb 1928Dec 2025 Water
Deerfield 3Great River Hydro, LLCBuckland, MA26 GWhJul 1912Dec 2025 Water
McindoesGreat River Hydro, LLCBarnet, VT39 GWhDec 1930Dec 2025 Water
SearsburgGreat River Hydro, LLCSearsburg, VT16 GWhFeb 1922Dec 2025 Water
Deerfield 5Great River Hydro, LLCFlorida, MA44 GWhSep 1974Dec 2025 Water
WilderGreat River Hydro, LLCHartford, VT134 GWhOct 1950Dec 2025 Water
Vernon DamGreat River Hydro, LLCVernon, VT119 GWhJul 1909Dec 2025 Water
S C MooreGreat River Hydro, LLCLittleton, NH255 GWhDec 1956Dec 2025 Water
ComerfordGreat River Hydro, LLCMonroe, NH297 GWhAug 1930Dec 2025 Water
Berlin GorhamGreat Lakes Hydro America LLCBerlin, NH101 GWhDec 1913Dec 2025 Water
Great Lakes Hydro America - MEGreat Lakes Hydro America LLCMillinocket, ME500 GWhJun 1917Dec 2025 Water
NewportGreat Bay Hydro CorpNewport, VT13 GWhDec 1935Dec 2025 Water
Gravel Pit Solar, LLCGravel Pit Solar, LLCEast Windsor, CT187 GWhJan 2025May 2026 Solar
MerrimackGranite Shore PowerBow, NH116 GWhNov 1960May 2026 Bituminous Coal : 97.6% Jet Fuel : 2.3%
Lost NationGranite Shore PowerGroveton, NH422 MWhAug 1969Dec 2024 Distillate Fuel Oil
White LakeGranite Shore PowerTamworth, NH484 MWhJun 1968Dec 2024 Jet Fuel
SchillerGranite Shore PowerPortsmouth, NH888 MWhSep 1952May 2026 Jet Fuel
NewingtonGranite Shore PowerNewington, NH157 GWhMay 1974Apr 2026 Residual Fuel Oil : 64.1% Natural Gas : 34.5% Distillate Fuel Oil : 1.4%
Granite RidgeGranite Ridge Energy LLCLondonderry, NH4 TWhFeb 2003May 2026 Natural Gas
Granby Solar, LLC CSGGranby Solar, LLCGranby, MA6 GWhJun 2021Dec 2025 Solar
Golden Hills SolarGolden Hills Solar, LLCRutland, MA7 GWhAug 2017Dec 2025 Solar
Bridgeport StationGeneration Bridge II Connecticut, LLCBridgeport, CT3 TWhJul 1961May 2026 Natural Gas : 84.6% Distillate Fuel Oil : 15.4%
New Haven SteamGeneration Bridge II Connecticut, LLCNew Haven, CT167 GWhJun 1975Jan 2026 Residual Fuel Oil : 45.1% Natural Gas : 40.3% Distillate Fuel Oil : 12.2% Kerosene : 2.5%
Generate Colchester Fuel Cells, LLCGenerate Colchester Fuel Cells, LLCColchester, CT72 GWhSep 2021Dec 2025 Natural Gas
General Electric Aircraft EnginesGeneral Electric Aircraft EnginesLynn, MA2 GWhDec 1947May 2026 Solar
GenConn Middletown LLCGenConn Middletown LLCMiddletown, CT6 GWhMay 2011Dec 2025 Kerosene : 77.4% Natural Gas : 22.6%

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