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 | Jul 2026 |
| Annual Generation | 111.1 TWh |
| Power Plants | 1,629 |
| Utilities | 833 |
| 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% |
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 |
|---|---|---|---|---|---|---|
| East Barnet | Green Mountain Power Corp | Barnet, VT | 5 GWh | Aug 1984 | Dec 2025 | Water |
| Eastern Maine Medical Center | Eastern Maine Medical Center | Bangor, ME | 28 GWh | Sep 2006 | May 2026 | Natural Gas |
| ME CDG 004 | ME CDG 004 LLC | Bangor, ME | 3 GWh | Nov 2024 | Dec 2025 | Solar |
| Broadway Solar (CSG) | NextGrid Bitterbush, LLC | Bangor, ME | 6 GWh | Aug 2023 | Dec 2025 | Solar |
| Fusion Solar Center LLC | Fusion Solar Centre, L.L.C | Baltic, CT | 38 GWh | Feb 2018 | May 2026 | Solar |
| Randall Road Solar II | Green Street Power Partners | Ballston Spa, NY | 3 GWh | Jun 2024 | Dec 2025 | Solar |
| Randall Road Solar I | Green Street Power Partners | Ballston Spa, NY | 5 GWh | Jun 2024 | Dec 2025 | Solar |
| GSPP Devens, LLC | Green Street Power Partners | Ayer, MA | 3 GWh | Dec 2018 | Dec 2025 | Solar |
| Augusta PV - BD Solar Augusta LLC | BD Solar Augusta LLC | Augusta, ME | 9 GWh | May 2021 | Dec 2025 | Solar |
| MEVS DOT 109 | MEVS DOT, LLC | Augusta, ME | 4 GWh | Jun 2023 | Dec 2025 | Solar |
| Church Hill Road Augusta Solar, LLC | REA Investments, LLC | Augusta, ME | 7 GWh | Jan 2022 | Dec 2025 | Solar |
| BD Solar Hancock LLC | BD Solar Hancock LLC | Augusta, ME | 11 GWh | May 2022 | Dec 2025 | Solar |
| BD Solar Ellsworth LLC | BD Solar Hancock North LLC | Augusta, ME | 9 GWh | May 2022 | 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 |
| Augusta | Maine DG Solar Augusta, LLC | Augusta, ME | 5 GWh | Feb 2022 | Dec 2025 | Solar |
| GSPP 4643 Twelve Corners Road, LLC | Green Street Power Partners | Auburn, NY | 8 GWh | May 2023 | Dec 2025 | Solar |
| Auburn Solar Project | Agilitas Energy, Inc. | Auburn, MA | 8 GWh | Apr 2022 | Dec 2025 | Solar |
| MMWAC Resource Recovery Facility | Maine Waste to Energy | Auburn, ME | 8 GWh | May 1992 | May 2026 | Non-biogenic Municipal Solid Waste : 54.0% Biogenic Municipal Solid Waste : 44.2% Natural Gas : 1.8% |
| Deer Rips | Brookfield White Pine Hydro LLC | Auburn, ME | 51 GWh | Dec 1902 | Dec 2025 | Water |
| Upper Barker | KEI (Maine) Power Management (III) LLC | Auburn, ME | 4 GWh | Apr 1987 | Dec 2025 | Water |
| Barker Lower | KEI (Maine) Power Management (III) LLC | Auburn, ME | 4 GWh | Mar 1986 | Dec 2025 | Water |
| GSPP NESV, LLC | Green Street Power Partners | Attleboro, MA | 2 GWh | Feb 2023 | Dec 2025 | Solar |
| Partridgeville Hybrid CSG | Partridgeville Road Solar 1, LLC | Athol, MA | 6 GWh | Dec 2019 | Dec 2024 | Solar |
| Adams Farm Solar | Altus Power America Management, LLC | Athol, MA | 4 GWh | Sep 2013 | Dec 2025 | Solar |
| Athens Energy | Athens Energy, LLC | Athens, ME | 56 GWh | Sep 2016 | Dec 2025 | Wood/Wood Waste Solids |
| Athens AT01 | Nautilus Solar Solutions | Athens, ME | 7 GWh | May 2022 | Dec 2025 | Solar |
| Athens Ridge | Greenbacker Renewable Energy Corporation | Athens, ME | 5 GWh | Feb 2024 | Dec 2025 | Solar |
| Ashland Solar | Citizens Enterprises Corporation | Ashland, MA | 6 GWh | Nov 2019 | Dec 2025 | Solar |
| Centaurus Solar - MA | LSE Centaurus LLC | Ashland, MA | 3 GWh | Oct 2016 | Dec 2025 | Solar |
| French Road Solar | SoCore Energy LLC | Ashland, ME | 3 GWh | Nov 2024 | Dec 2025 | Solar |
| Sheridan Road Solar Farm | REA Investments, LLC | Ashland, ME | 4 GWh | Jul 2024 | Dec 2025 | Solar |
| Ashby Duffy CSG Solar Farm | LSE Cassiopeia LLC | Ashby, MA | 3 GWh | Nov 2017 | Dec 2025 | Solar |
| Integrys MA Solar, LLC - Ashburnham Site | Integrys MA Solar, LLC | Ashburnham, MA | 3 GWh | Nov 2013 | Dec 2025 | Solar |
| Hopkinton Phase 2 | Vista Solar, Inc. | Ashaway, RI | 4 GWh | Aug 2020 | Dec 2025 | Solar |
| Antrim Wind | Antrim Wind Energy LLC | Antrim, NH | 76 GWh | Nov 2019 | May 2026 | Wind |
| Benz Solar 2 | Ecos Energy LLC | Ansonia, CT | 1 GWh | Feb 2025 | Dec 2025 | Solar |
| Benz Solar 1 | Ecos Energy LLC | Ansonia, CT | 1 GWh | Feb 2025 | Dec 2025 | Solar |
| Dairy Farm | Greenbacker Renewable Energy Corporation | Anson, ME | 6 GWh | Sep 2024 | Dec 2025 | Solar |
| Hewlett-Packard (HP) - Andover, MA | Tesla Inc. | Andover, MA | 2 GWh | May 2017 | Dec 2025 | Solar |
| Amherst College Co Gen | Amherst College | Amherst, MA | 8 GWh | Oct 2006 | Dec 2025 | Natural Gas |
| UMASS | RWE Clean Energy | Amherst, MA | 5 GWh | Sep 2016 | Dec 2025 | Solar |
| Hampshire College Hybrid | Tesla Inc. | Amherst, MA | 3 GWh | Apr 2017 | Dec 2025 | Solar |
| Central Heating Plant | University of Massachusetts Amherst | Amherst, MA | 80 GWh | Sep 2007 | Dec 2025 | Natural Gas : 96.3% Distillate Fuel Oil : 3.7% |
| Town of Amherst Solar | Agilitas Energy, Inc. | Amherst, MA | 4 GWh | Jul 2022 | Dec 2025 | Solar |
| UMass PV Lot 22 | RWE Clean Energy | Amherst, MA | 3 GWh | Aug 2022 | Dec 2025 | Solar |
| Montague Road Solar | Montague Road Solar, LLC | Amherst, MA | 4 GWh | Nov 2019 | Dec 2025 | Solar |
| Pulpit Hill | LSE Fornax LLC | Amherst, MA | 7 GWh | Jun 2019 | Dec 2025 | Solar |
| Kearsarge Amesbury Hybrid | Kearsarge Amesbury LLC | Amesbury, MA | 5 GWh | Nov 2019 | Dec 2025 | Solar |
| Hunt Road Solar | Citizens Enterprises Corporation | Amesbury, MA | 7 GWh | Nov 2016 | Dec 2025 | Solar |
| China Mill Hydro | New Hampshire Hydro Associates | Allenstown, NH | 3 GWh | Jun 1981 | Dec 2025 | Water |
| VEC Alburgh Array | SoCore Energy LLC | Alburgh, VT | 1 GWh | Nov 2016 | Dec 2025 | Solar |
| RT405 Westerlo Solar 2 | RT405 Westerlo Solar 2, LLC | Albany, NY | 8 GWh | Feb 2020 | Dec 2025 | Solar |
| Knapp East (CSG) | AES Distributed Energy | Akron, NY | 7 GWh | Nov 2021 | Dec 2025 | Solar |
| Knapp West(CSG) | AES Distributed Energy | Akron, NY | 6 GWh | Nov 2021 | Dec 2025 | Solar |
| ENGIE 2019 ProjectCo-MA1, LLC | ENGIE 2019 ProjectCo MA-1, LLC | Agawam, MA | 5 GWh | Feb 2021 | Jul 2025 | Solar |
| CES Agawam Tuckahoe Solar Hybrid | CES Agawam Tuckahoe Solar LLC | Agawam, MA | 7 GWh | Nov 2021 | Dec 2025 | Solar |
| Agawam Solar | Citizens Enterprises Corporation | Agawam, MA | 2 GWh | Feb 2012 | Dec 2025 | Solar |
| Route 57 Solar | Citizens Enterprises Corporation | Agawam, MA | 2 GWh | Feb 2013 | Dec 2025 | Solar |
| Berkshire Power | Berkshire Power Co LLC | Agawam, MA | 810 GWh | Aug 1999 | Dec 2025 | Natural Gas |
| Citizens Agawam Landfill Solar | Citizens Enterprises Corporation | Agawam, MA | 3 GWh | Mar 2017 | Dec 2025 | Solar |
| Adams Grove Solar | SoCore Energy LLC | Adams, MA | 6 GWh | Aug 2022 | Dec 2024 | Solar |
| Kearsarge Acushnet | Kearsarge Acushnet LLC | Acushnet, MA | 3 GWh | Jan 2020 | Dec 2025 | Solar |
| Apollo | Sunrise on Wing Ln. LLC | Acushnet, MA | 2 GWh | Aug 2021 | Dec 2024 | Solar |
| Acushnet MA 1 | Navisun LLC | Acushnet, MA | 1 GWh | Nov 2023 | Dec 2025 | Solar |
| Acushnet MA 2 (CSG) | Navisun LLC | Acushnet, MA | 1 GWh | Feb 2024 | Dec 2025 | Solar |
| Acton Solar Landfill | Heliovaas LLC | Acton, MA | 475 MWh | Nov 2013 | Dec 2025 | Solar |
| Acton | Acton H Road Solar 1, LLC | Acton, ME | 5 GWh | Nov 2021 | Dec 2025 | Solar |
Surrounding Balancing Authorities
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #61 | Alcoa Power Generating, Inc. - Yadkin Division | 442.5 GWh | 4 |
| #24 | Dominion Energy South Carolina, Inc. | 25.3 TWh | 83 |
| #13 | Duke Energy Carolinas | 112.6 TWh | 577 |
| #17 | Duke Energy Progress East | 64.5 TWh | 565 |
| #50 | Duke Energy Progress West | 4.5 TWh | 15 |
| #23 | Louisville Gas and Electric Company and Kentucky Utilities Company | 33.9 TWh | 25 |
| #12 | New York Independent System Operator | 134.3 TWh | 1,299 |
| #1 | PJM Interconnection, LLC | 882.8 TWh | 2,652 |
| #31 | South Carolina Public Service Authority | 18.5 TWh | 35 |
| #59 | Southeastern Power Administration | 1.3 TWh | 11 |
Balancing Authorities with Similar Net Generation
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #7 | California Independent System Operator | 169.4 TWh | 2,135 |
| #9 | Tennessee Valley Authority | 163.4 TWh | 207 |
| #10 | Florida Power & Light Co. | 152.2 TWh | 187 |
| #12 | New York Independent System Operator | 134.3 TWh | 1,299 |
| #13 | Duke Energy Carolinas | 112.6 TWh | 577 |
| #15 | ISO New England | 111.1 TWh | 1,629 |
| #16 | Bonneville Power Administration | 91.6 TWh | 167 |
| #17 | Duke Energy Progress East | 64.5 TWh | 565 |
| #18 | PacifiCorp East | 60.9 TWh | 222 |
| #19 | Salt River Project Agricultural Improvement and Power District | 60.3 TWh | 49 |