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 301 to 400 of 1,306
Plant NameUtilityLocationAnnual GenerationPlant DateLast UpdateFuel Types
Somers Solar Center, LLCOnward EnergySomers, CT9 GWhNov 2013Dec 2024 Solar
Solten Plainville 6000, LLCAltus Power America Management, LLCPlainville, MA7 GWhJul 2017Dec 2024 Solar
Solar Mule, LLCSolar Mule, LLCOakland, ME2 GWhAug 2017Dec 2024 Solar
Smithfield Solar Farm, LLCSmithfield Solar FarmSmithfield, RI4 GWhJun 2020Dec 2024 Solar
Smith & Wesson at Springfield MA PVLuminace Solar Massachusetts, LLCSpringfield, MA2 GWhJun 2017Dec 2024 Solar
Smith (VT)Green Mountain Power CorpBradford, VT2 GWhNov 1982Dec 2024 Water
Smith (NH)Central Rivers Power NH, LLCBerlin, NH112 GWhJul 1948Dec 2024 Water
Smith College Central Heating PlantThe Trustees of Smith CollegeNorthampton, MA14 GWhSep 2008Dec 2024 Natural Gas
Skyway Avenue Solar FarmREA Investments, LLCFrenchville, ME1 GWhFeb 2024Oct 2024 Solar
Skyline SolarSoCore Energy LLCLanesborough, MA7 GWhAug 2022Dec 2024 Solar
SkeltonBrookfield White Pine Hydro LLCDayton, ME58 GWhDec 1947Dec 2024 Water
SJA Solar LLC-Solterra Monastery CSGSJA Solar, LLCSpencer, MA27 GWhNov 2016Dec 2024 Solar
Silver MapleWEB Silver Maple Wind LLCClifton, ME59 GWhSep 2022Dec 2024 Wind
Silver Lake (VT)Green Mountain Power CorpSalisbury, VT5 GWhJan 1917Dec 2024 Water
Silver Lake Solar Photovoltaic FacilityWestern Massachusetts Electric CompanyPittsfield, MA805 MWhNov 2010Dec 2024 Solar
Sikorsky Aircraft CHPSikorsky Aircraft CorporationStratford, CT53 GWhMay 2010Dec 2024 Natural Gas : 99.8%
Signature Breads ChelseaJDC 65R Owner, LLCChelsea, MA2 MWhApr 2019Dec 2023 Distillate Fuel Oil
SidneyNautilus Solar SolutionsSidney, ME2 GWhApr 2023Dec 2024 Solar
Shuman SolarNuGen Capital ManagementStoughton, MA2 GWhMar 2016Dec 2024 Solar
Shrewsbury SolarConsolidated Edison Development Inc.Shrewsbury, MA4 GWhSep 2012Dec 2024 Solar
ShrewsburyTown of Shrewsbury - (MA)Shrewsbury, MA34 MWhOct 1969Dec 2024 Distillate Fuel Oil
Shirley WaterAltus Power America Management, LLCShirley, MA3 GWhJul 2016Dec 2024 Solar
Shirley LandfillAltus Power America Management, LLCShirley, MA1 GWhApr 2017Dec 2024 Solar
Sherman SolarEcos Energy LLCGriswold, CT1 GWhNov 2019Dec 2024 Solar
ShermanGreat River Hydro, LLCRowe, MA27 GWhNov 1926Dec 2024 Water
ShepaugFirstLight Power Resources Services LLCSouthbury, CT117 GWhDec 1954Dec 2024 Water
Sheldon Springs HydroelectricCentral Rivers Power US, LLCSheldon Springs, VT68 GWhJun 1988Dec 2024 Water
Sheldon SolarExcelsior Energy CapitalSheldon Springs, VT3 GWhAug 2013Dec 2024 Solar
Sheffield WindEvergreen Wind, LLCSheffield, VT73 GWhSep 2011Sep 2025 Wind
ShawmutBrookfield White Pine Hydro LLCShawmut, ME17 GWhDec 1912Dec 2024 Water
ShakerNautilus Solar SolutionsGray, ME6 GWhJun 2022Dec 2024 Solar
ShafferCD US Solar MT3, LLCBillerica, MA7 GWhAug 2014Dec 2024 Solar
Settlers SolarSettlers Solar, LLCLunenberg, MA8 GWhNov 2020Dec 2024 Solar
SEMASS Resource RecoverySEMASS PartnershipWest Wareham, MA569 GWhJun 1988Sep 2025 Non-biogenic Municipal Solid Waste : 54.1% Biogenic Municipal Solid Waste : 44.3% Natural Gas : 1.5%
SELCO Community SolarMassachusetts Mun Wholes Electric CoShrewsbury, MA5 GWhMay 2018Dec 2024 Solar
Searsburg Wind TurbineGreen Mountain Power CorpSearsburg, VT12 GWhMay 1997Sep 2025 Wind
SearsburgGreat River Hydro, LLCSearsburg, VT15 GWhFeb 1922Dec 2024 Water
SeabrookNextEra Energy Seabrook LLCSeabrook, NH10 TWhJul 1990Sep 2025 Nuclear
Seaboard Sheffield, LLCNavisun LLCSheffield, MA2 GWhMar 2021Dec 2024 Solar
Seaboard Oxford, LLCNavisun LLCOxford, MA3 GWhJul 2020Dec 2024 Solar
Seaboard Charlton, LLCNavisun LLCCharlton, MA3 GWhNov 2020Dec 2024 Solar
SCS Harpswell 012903 Brunswick, LLCArevon Energy, Inc.Brunswick, ME7 GWhOct 2022Dec 2024 Solar
Scotland DamFirstLight Power Resources Services LLCWindham, CT7 GWhDec 1936Dec 2024 Water
Scituate WindScituate Wind LLCScituate, MA2 GWhFeb 2012Dec 2024 Wind
Scituate PVAES Distributed EnergyScituate, MA3 GWhSep 2013Dec 2024 Solar
SchillerGranite Shore PowerPortsmouth, NH590 MWhSep 1952Sep 2025 Jet Fuel
Savoy Solar PVNSTAR Electric CompanySavoy, MA3 GWhJan 2019Dec 2024 Solar
Saratoga Solar IV, LLCGreen Street Power PartnersRock City Falls, NY4 GWhSep 2023Dec 2024 Solar
Saratoga Solar III, LLCGreen Street Power PartnersMiddle Grove, NY6 GWhNov 2023Dec 2024 Solar
Sanford SolarSanford Airport Solar, LLCSanford, ME88 GWhOct 2020Sep 2025 Solar
Sanford -NYNautilus Solar SolutionsSanford, ME7 GWhJan 2024Dec 2024 Solar
Sanford CGANautilus Solar SolutionsSanford, ME230 MWhMay 2022Dec 2024 Solar
SandwichLSE Ophiuchus LLCSandwich, MA5 GWhJun 2023Dec 2024 Solar
Sand RoadLSE Phoenix LLCNorth Canaan, CT4 GWhOct 2021Dec 2024 Solar
Sampson Road Community SolarSampson Road Solar, LLCCharlton, MA3 GWhNov 2017Dec 2024 Solar
Samoset SolarSamoset Solar, LLCRockport, ME4 GWhJun 2023Dec 2024 Solar
Salmon FallsGreen Mountain Power CorpSouth Berwick, ME3 GWhJun 1986Dec 2024 Water
SalisburyGreen Mountain Power CorpSalisbury, VT2 GWhJan 1917Dec 2024 Water
Salem Harbor Power Development LPSalem Harbor Power Development LPSalem, MA2 TWhApr 2018Sep 2025 Natural Gas
Saint Albans SolarCypress Creek RenewablesGeorgia, VT8 GWhSep 2018Dec 2024 Solar
Saddleback SolarSoCore Energy LLCLanesborough, MA4 GWhAug 2022Dec 2024 Solar
Saddleback Ridge Wind FarmCPV Saddleback Ridge Wind, LLCCarthage, ME83 GWhNov 2014Dec 2024 Wind
Sabattus SB01Nautilus Solar SolutionsSabattus, ME8 GWhSep 2023Dec 2024 Solar
S D Warren WestbrookRelevate Power Management LLCWestbrook, ME33 GWhDec 1902Dec 2023 Water
S C MooreGreat River Hydro, LLCLittleton, NH341 GWhDec 1956Dec 2024 Water
Ryegate Associates, LLCRyegate Associates, LLCEast Ryegate, VT150 GWhAug 1992Dec 2024 Wood/Wood Waste Solids
Ryans RanchNautilus Solar SolutionsParis, ME3 GWhMay 2022Dec 2024 Solar
Ryan Road Solar LLC Hybrid(CSG)AES Distributed EnergyNorth Brookfield, MA9 GWhNov 2021Dec 2024 Solar
RutlandGreen Mountain Power CorpRutland City, VT84 MWhNov 1962Mar 2024 Distillate Fuel Oil
Russell (MA)Sunrise on Blandford Rd. LLCRussell, MA5 GWhOct 2020Dec 2024 Solar
Rumford Power LLCRumford PowerRumford, ME638 GWhJun 2000Dec 2024 Natural Gas
Rumford Falls Hydro FacilityBrookfield Power New EnglandRumford, ME261 GWhDec 1917Dec 2024 Water
Rumford CogenerationND Paper, Inc.Rumford, ME429 GWhDec 1989Sep 2025 Black Liquor : 51.5% Tire-derived Fuels : 22.6% Wood/Wood Waste Solids : 14.3% Bituminous Coal : 7.6% Residual Fuel Oil : 3.2% Sludge Waste : 0.9%
RT405 Westerlo Solar 2RT405 Westerlo Solar 2, LLCAlbany, NY8 GWhFeb 2020Dec 2024 Solar
RoxWindRoxWind LLCRoxbury, ME36 GWhOct 2021Dec 2024 Wind
Rowe (CSG)AES Distributed EnergyOlean, NY8 GWhOct 2021Dec 2024 Solar
Route 57 SolarCitizens Enterprises CorporationAgawam, MA2 GWhFeb 2013Dec 2024 Solar
Route 3 China Solar, LLCREA Investments, LLCChina, ME8 GWhNov 2022Dec 2024 Solar
Rounseville SolarRounseville Solar 1, LLCRochester, MA4 GWhJan 2020Dec 2024 Solar
RollinsfordGreen Mountain Power CorpRollinsford, NH2 GWhSep 1986Dec 2024 Water
Rollins Wind ProjectEvergreen Wind, LLCWinn Village, ME136 GWhJun 2011Dec 2024 Wind
Rolfe Canal HydroBriar-Hydro AssociatesPenacook, NH17 GWhNov 1987Dec 2024 Water
Roger Williams - Melville at PortsmouthLuminace Solar Rhode Island, LLCPortsmouth, RI5 GWhFeb 2021Dec 2024 Solar
Rockland Solar CSGMN8 Energy LLCRockland, MA2 GWhNov 2013Dec 2024 Solar
Rochester MA 2Rochester MA 2 LLCRochester, MA2 GWhNov 2018Dec 2024 Solar
Robin Hollow SolarRobin Hollow Solar, LLCWest Greenwich, RI70 GWhNov 2023Sep 2025 Solar
Robbins LumberRobbins Lumber IncSearsmont, ME97 MWhDec 1980Dec 2023 Distillate Fuel Oil
Riverside HolyokeCity of Holyoke Gas and Electric Dept.Holyoke, MA38 GWhDec 1905Dec 2024 Water
River RoadNorridgewock River Road Solar, LLCNorridgewock, ME8 GWhFeb 2022Dec 2024 Solar
Rising PaperAltus Power America Management, LLCGreat Barrington, MA4 GWhApr 2016Dec 2024 Solar
Ridgewood Providence PowerRhode Island LFG GencoJohnston, RI1 GWhJul 2005Dec 2024 Landfill Gas
Richmond NMCAAES Distributed EnergyWood River Junction, RI6 GWhNov 2018Sep 2025 Solar
Richmond HillGreenbacker Renewable Energy CorporationRichmond, ME3 GWhNov 2023Dec 2024 Solar
Rhode Island State Energy CenterRISEC Operating ServicesJohnston, RI3 TWhSep 2002Sep 2025 Natural Gas
Rhode Island Solar Renewable Energy IV,Rhode Island Solar Renewable Energy IV, LLCTiverton, RI21 GWhNov 2023Dec 2024 Solar
Rhode Island HospitalRhode Island HospitalProvidence, RI8 GWhSep 1974Sep 2025 Natural Gas : 86.8% Residual Fuel Oil : 13.2%
RGS-Rutland VNM SREC II Project (MA)TerraForm Solar XVII, LLCRutland, MA2 GWhOct 2015Dec 2024 Solar
Renew Canal 1 CSG LLCNRG Renew Canal 1 LLCSandwich, MA2 GWhMay 2017Dec 2024 Solar
Rehoboth SolarCitizens Enterprises CorporationRehoboth, MA3 GWhNov 2013Dec 2024 Solar
Regional Waste SystemsEcomainePortland, ME90 GWhMay 1988Sep 2025 Non-biogenic Municipal Solid Waste : 54.6% Biogenic Municipal Solid Waste : 44.7% Natural Gas : 0.7%

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