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 Authority | ISO New England |
|---|---|
| States | Connecticut Maine Massachusetts New Hampshire New York Rhode Island Vermont |
| Last Update | Oct 2026 |
| Annual Generation | 112.2 TWh |
| Power Plants | 1,667 |
| Utilities | 846 |
| 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% Nuclear | 25.3% Wind | 5.7% Water | 4.6% Other Fuel | 4.5% Solar | 1.6% Coal | 0% |
Map of ISO New England
Register Now for Comprehensive Access
Subscribe now to access all power plant data, utility information, FERC EQR data, and more for ISO New England.
Daily Net Generation for ISO New England for the past 3 Years
| Plant Name | Utility | Location | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|
| Ward Solar 1, LLC | REA Investments, LLC | Carver, MA | 3 GWh | Jan 2019 | Dec 2025 | Solar |
| Skyway Avenue Solar Farm | REA Investments, LLC | Frenchville, ME | 3 GWh | Feb 2024 | Dec 2025 | Solar |
| Route 3 China Solar, LLC | REA Investments, LLC | China, ME | 8 GWh | Nov 2022 | Dec 2025 | Solar |
| Perkins Road Belfast Solar, LLC | REA Investments, LLC | Belfast, ME | 9 GWh | May 2021 | Dec 2025 | Solar |
| Nutting Ridge Solar, LLC | REA Investments, LLC | Otisfield, ME | 7 GWh | May 2023 | Dec 2025 | Solar |
| North Nobleboro Road, LLC | REA Investments, LLC | Waldoboro, ME | 4 GWh | May 2021 | Dec 2025 | Solar |
| Market Street Gardiner Solar, LLC | REA Investments, LLC | Gardiner, ME | 6 GWh | Jun 2022 | Dec 2025 | Solar |
| Plympton Main Street Solar, LLC | REA Investments, LLC | Plympton, MA | 7 GWh | Nov 2023 | Dec 2025 | Solar |
| Mariaville Road Elsworth Solar, LLC | REA Investments, LLC | Ellsworth, ME | 1 GWh | Apr 2022 | Dec 2025 | Solar |
| Plympton Lake Street Solar | REA Investments, LLC | Plympton, MA | 2 GWh | Nov 2022 | Dec 2025 | Solar |
| Houlton Road Solar Farm (CSG) | REA Investments, LLC | Fort Fairfield, ME | 2 GWh | Nov 2024 | Dec 2025 | Solar |
| Church Hill Road Augusta Solar, LLC | REA Investments, LLC | Augusta, ME | 7 GWh | Jan 2022 | Dec 2025 | Solar |
| Augusta Road Bowdoin Solar, LLC | REA Investments, LLC | Bowdoin, ME | 5 GWh | Jan 2022 | Dec 2025 | Solar |
| Record Hill Wind | Record Hill Wind LLC | Roxbury, ME | 110 GWh | Dec 2011 | Dec 2025 | Wind |
| Redbrook Community Solar 1 | Redbrook Solar 1, LLC | Plympton, MA | 1 GWh | Sep 2017 | Dec 2025 | Solar |
| ReEnergy Livermore Falls | ReEnergy Livermore Falls | Livermore Falls, ME | 274 GWh | Jul 1992 | Dec 2025 | Wood/Wood Waste Solids |
| ReEnergy Stratton LLC | ReEnergy Stratton LLC | Stratton, ME | 200 GWh | Oct 1989 | Dec 2025 | Wood/Wood Waste Solids |
| S D Warren Westbrook | Relevate Power Management LLC | Westbrook, ME | 15 GWh | Dec 1902 | Dec 2025 | Water |
| Alton Road Solar | Revity Energy LLC | Bradford, RI | 24 GWh | Nov 2019 | Dec 2025 | Solar |
| Rhode Island Hospital | Rhode Island Hospital | Providence, RI | 40 GWh | Sep 1974 | Jul 2026 | Natural Gas : 83.2% Residual Fuel Oil : 16.8% |
| Johnston LFG Turbine Plant | Rhode Island LFG Genco | Johnston, RI | 170 GWh | Apr 2013 | Jul 2026 | Landfill Gas |
| Ridgewood Providence Power | Rhode Island LFG Genco | Johnston, RI | 4 GWh | Jul 2005 | Dec 2025 | Landfill Gas |
| Rhode Island Solar Renewable Energy IV, | Rhode Island Solar Renewable Energy IV, LLC | Tiverton, RI | 18 GWh | Nov 2023 | Dec 2025 | Solar |
| Rhode Island State Energy Center | RISEC Operating Services | Johnston, RI | 3 TWh | Sep 2002 | Jul 2026 | Natural Gas |
| Georges River Energy | Robbins Lumber Inc | Searsmont, ME | 51 GWh | Nov 2018 | Dec 2025 | Wood/Wood Waste Solids |
| Robin Hollow Solar | Robin Hollow Solar, LLC | West Greenwich, RI | 71 GWh | Nov 2023 | Jul 2026 | Solar |
| Rochester MA 2 | Rochester MA 2 LLC | Rochester, MA | 1 GWh | Nov 2018 | Dec 2025 | Solar |
| Rounseville Solar | Rounseville Solar 1, LLC | Rochester, MA | 4 GWh | Jan 2020 | Dec 2025 | Solar |
| RoxWind | RoxWind LLC | Roxbury, ME | 44 GWh | Oct 2021 | Dec 2025 | Wind |
| Clemons Road Solar | RPNY Solar 4, LLC | Minoa, NY | 4 GWh | Jun 2024 | Dec 2025 | Solar |
| Pike Road Solar (NY) | RPNY Solar 6, LLC | Batavia, NY | 5 GWh | Jun 2024 | Dec 2025 | Solar |
| Alexander Road Solar | RPNY Solar 7, LLC | Batavia, NY | 3 GWh | Jun 2024 | Dec 2025 | Solar |
| RT405 Westerlo Solar 2 | RT405 Westerlo Solar 2, LLC | Albany, NY | 8 GWh | Feb 2020 | Dec 2025 | Solar |
| Rumford Power LLC | Rumford Power | Rumford, ME | 793 GWh | Jun 2000 | Dec 2025 | Natural Gas |
| Dartmouth II Solar | RWE Clean Energy | Dartmouth, MA | 3 GWh | May 2012 | Dec 2025 | Solar |
| Tihonet Solar | RWE Clean Energy | Wareham, MA | 2 GWh | Apr 2014 | Dec 2025 | Solar |
| Douglas Solar | RWE Clean Energy | Douglas, MA | 3 GWh | Nov 2012 | Dec 2025 | Solar |
| Technology Drive Solar | RWE Clean Energy | Brattleboro, VT | 3 GWh | Aug 2014 | Dec 2025 | Solar |
| CED Westfield Solar, LLC | RWE Clean Energy | Westfield, MA | 3 GWh | Jul 2016 | Dec 2025 | Solar |
| Groveland Solar | RWE Clean Energy | Groveland, MA | 4 GWh | Nov 2012 | Dec 2025 | Solar |
| Shrewsbury Solar | RWE Clean Energy | Shrewsbury, MA | 4 GWh | Sep 2012 | Dec 2025 | Solar |
| Boston Scientific Solar | RWE Clean Energy | Quincy, MA | 1 GWh | Nov 2012 | Dec 2025 | Solar |
| Padelford Solar | RWE Clean Energy | Berkley, MA | 4 GWh | Nov 2012 | Dec 2025 | Solar |
| Merrimac Solar | RWE Clean Energy | Merrimac, MA | 2 GWh | Nov 2013 | Dec 2025 | Solar |
| CED Northampton Solar LLC Hybrid | RWE Clean Energy | Northampton, MA | 6 GWh | Nov 2019 | Dec 2025 | Solar |
| Northbridge Solar | RWE Clean Energy | South Grafton, MA | 3 GWh | Jul 2013 | Dec 2025 | Solar |
| Quittacas Pond Solar | RWE Clean Energy | Rochester, MA | 5 GWh | Nov 2013 | Dec 2025 | Solar |
| West Greenwich Solar | RWE Clean Energy | West Greenwich, RI | 2 GWh | Apr 2013 | Jul 2026 | Solar |
| Dartmouth Solar | RWE Clean Energy | Dartmouth, MA | 2 GWh | Feb 2011 | Dec 2025 | Solar |
| Wilson Solar (MA) | RWE Clean Energy | Spencer, MA | 870 MWh | May 2013 | Dec 2025 | Solar |
| UMASS | RWE Clean Energy | Amherst, MA | 5 GWh | Sep 2016 | Dec 2025 | Solar |
| CED Chicopee Solar | RWE Clean Energy | Chicopee, MA | 5 GWh | Jun 2017 | Dec 2025 | Solar |
| CED Foster | RWE Clean Energy | Foster, RI | 3 GWh | Nov 2017 | Jul 2026 | Solar |
| Future Generation Wind | RWE Clean Energy | Plymouth, MA | 12 GWh | Jul 2016 | Nov 2025 | Wind |
| UMass PV Lot 22 | RWE Clean Energy | Amherst, MA | 3 GWh | Aug 2022 | Dec 2025 | Solar |
| Fairhaven MA 2 | RWE Clean Energy | Fairhaven, MA | 4 GWh | Aug 2021 | Dec 2025 | Solar |
| Ryegate Associates, LLC | Ryegate Associates, LLC | East Ryegate, VT | 158 GWh | Aug 1992 | Dec 2025 | Wood/Wood Waste Solids |
| Salem Harbor Power Development LP | Salem Harbor Power Development LP | Salem, MA | 1 TWh | Apr 2018 | Jul 2026 | Natural Gas |
| Samoset Solar | Samoset Solar, LLC | Rockport, ME | 4 GWh | Jun 2023 | Dec 2025 | Solar |
| Sampson Road Community Solar | Sampson Road Solar, LLC | Charlton, MA | 3 GWh | Nov 2017 | Dec 2025 | Solar |
| Sanford Solar | Sanford Airport Solar, LLC | Sanford, ME | 89 GWh | Oct 2020 | Jul 2026 | Solar |
| Somerset Plant | Sappi Fine Paper North America-Somerset | Skowhegan, ME | 565 GWh | Dec 1975 | Jul 2026 | Black Liquor : 47.1% Wood/Wood Waste Solids : 31.7% Natural Gas : 13.0% Tire-derived Fuels : 4.1% Residual Fuel Oil : 3.4% Sludge Waste : 0.5% |
| Scituate Wind | Scituate Wind LLC | Scituate, MA | 3 GWh | Feb 2012 | Dec 2025 | Wind |
| SEMASS Resource Recovery | SEMASS Partnership | West Wareham, MA | 546 GWh | Jun 1988 | Jul 2026 | Non-biogenic Municipal Solid Waste : 54.0% Biogenic Municipal Solid Waste : 44.1% Natural Gas : 1.7% |
| Settlers Solar | Settlers Solar, LLC | Lunenberg, MA | 7 GWh | Nov 2020 | Dec 2025 | Solar |
| Milton Hydro | SFR Hydro Cor | Milton, NH | 5 GWh | Dec 1913 | Dec 2025 | Water |
| ME - EDF - Phase II - Belfast | Shining Solar Partners, LLC | Belfast, ME | 8 GWh | Aug 2024 | Dec 2025 | Solar |
| Sikorsky Aircraft CHP | Sikorsky Aircraft Corporation | Stratford, CT | 65 GWh | May 2010 | Dec 2025 | Natural Gas : 99.9% |
| Hillsborough Hosiery | Silverstreet Hydro | Hillsboro, NH | 2 GWh | Nov 1989 | Dec 2025 | Water |
| SJA Solar LLC-Solterra Monastery CSG | SJA Solar, LLC | Spencer, MA | 24 GWh | Nov 2016 | Dec 2025 | Solar |
| TES Rowtier | SkyHigh 2 Solar | Westminster, MA | 10 GWh | Mar 2021 | Dec 2025 | Solar |
| Smithfield Solar Farm, LLC | Smithfield Solar Farm | Smithfield, RI | 4 GWh | Jun 2020 | Dec 2025 | Solar |
| Saddleback Solar | SoCore Energy LLC | Lanesborough, MA | 4 GWh | Aug 2022 | Dec 2025 | Solar |
| Jericho Gravel Solar Farm | SoCore Energy LLC | Jerico, VT | 2 GWh | Dec 2020 | Dec 2025 | Solar |
| Caribou Solar | SoCore Energy LLC | Caribou, ME | 6 GWh | Nov 2024 | Dec 2025 | Solar |
| Marston Mills Solar | SoCore Energy LLC | Marstons Mills, MA | 6 GWh | Nov 2021 | Dec 2025 | Solar |
| Madawaska Solar | SoCore Energy LLC | Saint David, ME | 4 GWh | Nov 2024 | Dec 2025 | Solar |
| Jericho Landfill Solar Farm | SoCore Energy LLC | Jerico, VT | 1 GWh | Dec 2020 | Dec 2025 | Solar |
| French Road Solar | SoCore Energy LLC | Ashland, ME | 3 GWh | Nov 2024 | Dec 2025 | Solar |
| Adams Grove Solar | SoCore Energy LLC | Adams, MA | 6 GWh | Aug 2022 | Dec 2025 | Solar |
| Skyline Solar | SoCore Energy LLC | Lanesborough, MA | 8 GWh | Aug 2022 | Dec 2025 | Solar |
| Partridge Solar | SoCore Energy LLC | Lanesborough, MA | 8 GWh | Aug 2022 | Dec 2025 | Solar |
| VEC Magee Hill Solar | SoCore Energy LLC | Hinesburgh, VT | 2 GWh | Oct 2017 | Dec 2025 | Solar |
| VEC Alburgh Array | SoCore Energy LLC | Alburgh, VT | 1 GWh | Nov 2016 | Dec 2025 | Solar |
| ME Augusta 13 York Farm Rd Solar | SOL ME Augusta 13 York Farm, LLC | Augusta, ME | 1 GWh | Dec 2023 | Dec 2025 | Solar |
| McAllister Landfill | Solar Breakers LLC | Portsmouth, RI | 2 GWh | Sep 2022 | Dec 2025 | Solar |
| Tank Farm 4 | Solar Breakers LLC | Portsmouth, RI | 13 GWh | Sep 2022 | Dec 2025 | Solar |
| Solar Mule, LLC | Solar Mule, LLC | Oakland, ME | 2 GWh | Aug 2017 | Dec 2025 | Solar |
| Amazon BDL3 Solar Project | Solar Star Prime 1 LLC | New Haven, CT | 2 GWh | Sep 2019 | Dec 2025 | Solar |
| Indian Orchard Plant 1 | Solutia Inc-Indian | Springfield, MA | 10 GWh | Apr 1985 | Jul 2026 | Natural Gas |
| South Windsor Fuel Cell | South Energy Investments LLC | South Windsor, CT | 37 GWh | Feb 2020 | Dec 2025 | Natural Gas |
| Leominster (MA)-South Street-R&D | South Street Solar, LLC | Tewksbury, MA | 3 GWh | Nov 2013 | Dec 2025 | Solar |
| Southbridge Landfill Gas-to-Energy | Southbridge Recycling and Disposal Park | Southbridge, MA | 10 GWh | Sep 2011 | Dec 2025 | Landfill Gas |
| Passadumkeag Windpark LLC | Southern Power Co | Greenbush, ME | 135 GWh | Jun 2016 | Jul 2026 | Wind |
| Southern Sky Renew Energy Berkley LLC | Southern Sky Renewable Energy Berkley, LLC | Berkley, MA | 4 GWh | May 2014 | Dec 2025 | Solar |
| Spring Street Solar 1 CSG | Spring Street Solar 1, LLC | Carver, MA | 3 GWh | Feb 2017 | Dec 2025 | Solar |
| SR Litchfield | SR Litchfield, LLC | Litchfield, CT | 26 GWh | Jan 2025 | Dec 2025 | Solar |
| SR North Stonington | SR North Stonington, LLC | North Stonington, CT | 15 GWh | Feb 2024 | Dec 2025 | Solar |
| St. Albans SPEED Project | St. Albans Solar Partners, LLC | St. Albans, VT | 2 GWh | Nov 2013 | Dec 2025 | Solar |
| Stafford St Solar 1 CSG | Stafford St Solar 1, LLC | Leicester, MA | 3 GWh | Nov 2017 | Dec 2025 | Solar |
Surrounding Balancing Authorities
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #61 | Alcoa Power Generating, Inc. - Yadkin Division | 433.0 GWh | 4 |
| #24 | Dominion Energy South Carolina, Inc. | 26.1 TWh | 83 |
| #13 | Duke Energy Carolinas | 113.4 TWh | 578 |
| #17 | Duke Energy Progress East | 66.2 TWh | 574 |
| #50 | Duke Energy Progress West | 4.6 TWh | 15 |
| #23 | Louisville Gas and Electric Company and Kentucky Utilities Company | 34.2 TWh | 25 |
| #12 | New York Independent System Operator | 134.1 TWh | 1,334 |
| #1 | PJM Interconnection, LLC | 890.9 TWh | 2,806 |
| #28 | South Carolina Public Service Authority | 19.6 TWh | 35 |
| #59 | Southeastern Power Administration | 1.2 TWh | 11 |
Balancing Authorities with Similar Net Generation
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #7 | California Independent System Operator | 168.7 TWh | 2,170 |
| #9 | Tennessee Valley Authority | 166.2 TWh | 209 |
| #10 | Florida Power & Light Co. | 153.0 TWh | 188 |
| #12 | New York Independent System Operator | 134.1 TWh | 1,334 |
| #13 | Duke Energy Carolinas | 113.4 TWh | 578 |
| #15 | ISO New England | 112.2 TWh | 1,667 |
| #16 | Bonneville Power Administration | 91.1 TWh | 170 |
| #17 | Duke Energy Progress East | 66.2 TWh | 574 |
| #18 | PacifiCorp East | 61.4 TWh | 223 |
| #19 | Salt River Project Agricultural Improvement and Power District | 60.5 TWh | 51 |