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 1,001 to 1,100 of 1,367
Plant NameUtilityLocationAnnual GenerationPlant DateLast UpdateFuel Types
Notus Wind 1Notus Clean Energy LLCE. Falmouth, MA5 GWhJun 2010Dec 2025 Wind
Middleton Solar ParkNovis Renewables, LLCMiddleton, MA7 GWhMay 2018Dec 2024 Solar
Renew Canal 1 CSG LLCNRG Renew Canal 1 LLCSandwich, MA2 GWhMay 2017Dec 2024 Solar
Wareham Solar PVNSTAR Electric CompanyWareham, MA1 GWhNov 2018Dec 2025 Solar
Southwick Solar PVNSTAR Electric CompanySouthwick, MA8 GWhDec 2018May 2026 Solar
Sunderland Solar PVNSTAR Electric CompanySunderland, MA2 GWhAug 2018Dec 2025 Solar
Hampden Solar PVNSTAR Electric CompanyHampden, MA6 GWhOct 2019Dec 2025 Solar
Springfield Solar PVNSTAR Electric CompanySpringfield, MA6 GWhDec 2018Dec 2025 Solar
Plymouth SolarNSTAR Electric CompanyPlymouth, MA2 GWhMay 2018Dec 2025 Solar
Ludlow Site 72 - ContiNSTAR Electric CompanyLudlow, MA3 GWhJul 2018Dec 2025 Solar
East Springfield Solar PVNSTAR Electric CompanySpringfield, MA2 GWhSep 2018Dec 2025 Solar
Southampton Solar PVNSTAR Electric CompanySouthampton, MA3 GWhJan 2019Dec 2025 Solar
Lee Site 31 SolarNSTAR Electric CompanyLee, MA149 MWhJul 2018Dec 2025 Solar
Savoy Solar PVNSTAR Electric CompanySavoy, MA3 GWhJan 2019Dec 2025 Solar
Hinsdale Solar PVNSTAR Electric CompanyHinsdale, MA3 GWhDec 2018Dec 2025 Solar
Greenfield Solar PVNSTAR Electric CompanyGreenfield, MA3 GWhDec 2018Dec 2025 Solar
East Longmeadow Solar PVNSTAR Electric CompanyEast Longmeadow, MA8 GWhSep 2019Dec 2025 Solar
Pittsfield 44 - M&W PVNSTAR Electric CompanyPittsfield, MA2 GWhJul 2018Dec 2025 Solar
Montague Site 36-GrosolarNSTAR Electric CompanyMillers Falls, MA6 GWhSep 2018May 2026 Solar
Hatfield Solar PVNSTAR Electric CompanyHatfield, MA5 GWhNov 2018Dec 2025 Solar
651 Chase Solar NGNuGen Capital ManagementLunenburg, MA4 GWhMay 2014Dec 2025 Solar
Hadley Solar NG, LLCNuGen Capital ManagementHadley, MA3 GWhJun 2014Dec 2025 Solar
301 Chestnut Solar NGNuGen Capital ManagementEast Longmeadow, MA2 GWhMar 2017Dec 2025 Solar
265 Pleasant Solar NG, LLCNuGen Capital ManagementLunenburg, MA1 GWhJun 2014Dec 2025 Solar
Vuelta SolarNuGen Capital ManagementEast Brookfield, MA7 GWhDec 2015Dec 2025 Solar
10 Briggs Solar NG, LLC (East)NuGen Capital ManagementEast Greenwich, RI8 GWhMay 2021Dec 2025 Solar
Shuman SolarNuGen Capital ManagementStoughton, MA2 GWhMar 2016Dec 2025 Solar
Old Wardour SolarNuGen Capital ManagementEast Brookfield, MA7 GWhDec 2015Dec 2025 Solar
433 Purchase Solar NG, LLCNuGen Capital ManagementSwansea, MA4 GWhMar 2012Dec 2025 Solar
East Acres Solar NG, LLCNuGen Capital ManagementPittsfield, MA5 GWhMar 2017Dec 2025 Solar
Fairview Farms SolarNuGen Capital ManagementWhately, MA3 GWhMay 2014Dec 2025 Solar
Tolland Solar NG LLCNuGen Capital ManagementTolland, MA5 GWhSep 2014Dec 2025 Solar
Bristol Landfill SolarNuGen Capital ManagementBristol, RI9 GWhFeb 2024Dec 2025 Solar
580 River SolarNuGen Capital ManagementWinchendon, MA4 GWhAug 2018Dec 2025 Solar
Halifax SolarNuGen Capital ManagementHalifax, MA4 GWhJul 2015Dec 2025 Solar
Nutmeg SolarNutmeg Solar LLCEnfield, CT35 GWhNov 2020Dec 2025 Solar
Bourne (MA) - Holliston INVT LICENSES, LLCHolliston, MA3 GWhNov 2014Dec 2025 Solar
Ocean State PowerOcean State Power CoHarrisville, RI1 TWhNov 1990Dec 2025 Natural Gas : 99.7%
Ocean State Power IIOcean State Power IIHarrisville, RI577 GWhSep 1991Dec 2025 Natural Gas : 99.9%
Covanta HaverhillOgden Projects Inc-HaverhillHaverhill, MA287 GWhApr 1989May 2026 Non-biogenic Municipal Solid Waste : 52.8% Biogenic Municipal Solid Waste : 43.2% Distillate Fuel Oil : 4.1%
Old Frontier Solar IIIOld Frontier Solar III PV, LLCSouth Deerfield, MA4 GWhAug 2022Dec 2025 Solar
Pine HillOnsite Partners, LLCJohnston, RI8 GWhJul 2020Dec 2025 Solar
Cold River Road SolarOnsite Partners, LLCNorth Clarendon, VT3 GWhNov 2016Dec 2025 Solar
Trinity College Fuel CellOnsite Partners, LLCHartford, CT12 GWhJul 2018Dec 2024 Natural Gas
North Smithfield Solar Power 1Onsite Partners, LLCNorth Smithfield, RI2 GWhNov 2018Dec 2025 Solar
Oakfield Wind ProjectOnward EnergyCity of Oakfield, ME340 GWhSep 2015May 2026 Wind
Bingham WindOnward EnergyBingham, ME474 GWhNov 2016May 2026 Wind
Hancock Wind PlantOnward EnergyT22 MD, ME112 GWhNov 2016May 2026 Wind
Somers Solar Center, LLCOnward EnergySomers, CT9 GWhNov 2013Dec 2025 Solar
Onyx - Pembroke Landfill SolarOnyx Asset Services GroupPembroke, MA3 GWhNov 2017Dec 2025 Solar
Manchester Community College NorthOnyx Asset Services GroupGreat Path, CT1 GWhSep 2018Dec 2024 Solar
Manchester Community College EastOnyx Asset Services GroupManchester, CT2 GWhSep 2018Dec 2024 Solar
Winchendon Landfill SolarOnyx Asset Services GroupWinchendon, MA3 GWhSep 2018Dec 2024 Solar
Onyx - Brockton Thatcher Landfill SolarOnyx Asset Services GroupBrockton, MA5 GWhOct 2017Dec 2025 Solar
Barrett Farm Solar - Phase IOnyx Asset Services GroupThompson, CT3 GWhSep 2017Dec 2024 Solar
Ellington - 277 Sadds MillOnyx Asset Services GroupEllington, CT4 GWhFeb 2024Dec 2025 Solar
Stanley Black & DeckerOnyx Asset Services GroupEast Longmeadow, MA6 MWhNov 2025Dec 2025 Solar
MA Solar Storage 1 HybridOrigis Energy USA, IncSterling, MA1 GWhFeb 2018Dec 2025 Solar
Gardner - Otter River RoadOtter River Road Solar LLCGardner, MA4 GWhSep 2019Dec 2025 Solar
ME - EDFR - Phase I - BristolOverlook Solar Partners, LLCBristol, ME9 GWhNov 2023Dec 2025 Solar
Partridgeville Hybrid CSGPartridgeville Road Solar 1, LLCAthol, MA6 GWhDec 2019Dec 2024 Solar
Pendleton Solar 1Pendleton Solar 1, LLCLockport, NY7 GWhSep 2020Dec 2025 Solar
Penobscot Narrows Solar IPenobscot Narrows Solar I LLCBucksport, ME7 GWhMay 2024Dec 2025 Solar
Pepperidge Farm BloomfieldPepperidge Farm, Inc.- BloomfieldBloomfield, CT15 GWhJul 2008Dec 2024 Natural Gas
Peterson Road SolarPeterson Road Solar, LLCPalmer, MA4 GWhMar 2017Dec 2025 Solar
Pfizer Groton PlantPfizer IncGroton, CT75 GWhDec 1947May 2026 Natural Gas : 88.5% Distillate Fuel Oil : 11.5%
Pisgah Mountain WindPisgah Mountain, LLCClifton, ME28 GWhNov 2016Dec 2025 Wind
Pittsfield Generating LPPittsfield Generating Company, LPPittsfield, MA136 GWhJun 1990May 2026 Natural Gas : 96.9% Distillate Fuel Oil : 3.1%
Pittsfield Solar LLCPittsfiled Solar LLCPittsfield, ME15 GWhNov 2017Dec 2025 Solar
Plainfield Renewable Energy LLCPlainfield Renewable Energy, LLCPlainfield, CT245 GWhNov 2013Dec 2025 Wood/Wood Waste Solids : 99.3% Other Biomass Liquids : 0.7%
Plainfield Community Solar LLCPlainfield Solar LLCPlainfield, MA3 GWhJan 2019Dec 2025 Solar
Pleasantdale Road Community SolarPleasantdale Road Solar, LLCRutland, MA1 GWhAug 2017Dec 2025 Solar
Pontook Hydro FacilityPontook Operating LPDummer, NH51 GWhNov 1986Dec 2025 Water
Ticket Network South WindsorPowerflexSouth Windsor, CT2 GWhApr 2018Dec 2024 Solar
Corbin Russwin Phase 3 BerlinPowerflexBerlin, CT2 GWhMar 2018Dec 2025 Solar
ALDI DC 2PowerflexSouth Windsor, CT1 GWhJan 2018Dec 2025 Solar
Berkshire 1PPS Berkshire Solar LLCSheffield, MA2 GWhNov 2011Dec 2024 Solar
Williams College - Campus CHPPresident & Trustees of Williams CollegeWilliamstown, MA3 GWhFeb 2003Dec 2025 Natural Gas : 98.4% Distillate Fuel Oil : 1.6%
Quinebaug Lower ProjectQuinebaug Associates LLCBrooklyn, CT5 GWhMar 1990Dec 2025 Water
Quinebaug SolarQuinebaug Solar, LLCCanterbury, CT74 GWhNov 2021May 2026 Solar
Rand Whitney CHP PlantRand Whitney Containerboard L.P.Montville, CT132 GWhMar 2005May 2026 Natural Gas
Happy Hollow CSG HybridREA Investments, LLCWinchendon, MA9 GWhSep 2019Dec 2024 Solar
Washburn Road SolarREA Investments, LLCFreetown, MA3 GWhNov 2018Dec 2025 Solar
Plympton Lake Street SolarREA Investments, LLCPlympton, MA2 GWhNov 2022Dec 2025 Solar
Augusta Road Bowdoin Solar, LLCREA Investments, LLCBowdoin, ME5 GWhJan 2022Dec 2025 Solar
Canton GLC Solar, LLCREA Investments, LLCCanton, ME5 GWhMar 2024Dec 2025 Solar
Church Hill Road Augusta Solar, LLCREA Investments, LLCAugusta, ME7 GWhJan 2022Dec 2025 Solar
Ward Solar 1, LLCREA Investments, LLCCarver, MA3 GWhJan 2019Dec 2025 Solar
Skyway Avenue Solar FarmREA Investments, LLCFrenchville, ME3 GWhFeb 2024Dec 2025 Solar
Route 3 China Solar, LLCREA Investments, LLCChina, ME8 GWhNov 2022Dec 2025 Solar
Houlton Road Solar Farm (CSG)REA Investments, LLCFort Fairfield, ME2 GWhNov 2024Dec 2025 Solar
Mariaville Road Elsworth Solar, LLCREA Investments, LLCEllsworth, ME1 GWhApr 2022Dec 2025 Solar
Plympton Main Street Solar, LLCREA Investments, LLCPlympton, MA7 GWhNov 2023Dec 2025 Solar
Market Street Gardiner Solar, LLCREA Investments, LLCGardiner, ME6 GWhJun 2022Dec 2025 Solar
North Nobleboro Road, LLCREA Investments, LLCWaldoboro, ME4 GWhMay 2021Dec 2025 Solar
Sheridan Road Solar FarmREA Investments, LLCAshland, ME4 GWhJul 2024Dec 2025 Solar
Perkins Road Belfast Solar, LLCREA Investments, LLCBelfast, ME9 GWhMay 2021Dec 2025 Solar
Nutting Ridge Solar, LLCREA Investments, LLCOtisfield, ME7 GWhMay 2023Dec 2025 Solar
Record Hill WindRecord Hill Wind LLCRoxbury, ME110 GWhDec 2011Dec 2025 Wind
Redbrook Community Solar 1Redbrook Solar 1, LLCPlympton, MA1 GWhSep 2017Dec 2025 Solar

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