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% |
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Daily Net Generation for ISO New England for the past 3 Years
| Plant Name | Utility | Location | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|
| Annese Solar Project Hybrid CSG | AES Distributed Energy | Southbridge, MA | 8 GWh | Nov 2020 | Dec 2025 | Solar : 99.1% Electricity used for energy storage : 0.9% |
| West A&B Solar Project Hybrid CSG | AES Distributed Energy | Southbridge, MA | 5 GWh | Nov 2020 | Dec 2025 | Solar |
| Cycz Solar Project CSG Hybrid | AES Distributed Energy | Spencer, MA | 3 GWh | May 2020 | Dec 2025 | Solar |
| Lane Ave Solar LLC | AES Distributed Energy | North Brookfield, MA | 2 GWh | Aug 2021 | Dec 2025 | Solar |
| Hurteau Solar Project Hybrid | AES Distributed Energy | Uxbridge, MA | 3 GWh | Feb 2020 | Dec 2025 | Solar |
| Alicea Solar Project Hybrid CSG | AES Distributed Energy | Southbridge, MA | 4 GWh | Nov 2020 | Dec 2025 | Solar |
| McDougle-Mitchell Solar Project Hybrid C | AES Distributed Energy | Charlton, MA | 7 GWh | Jul 2020 | Dec 2025 | Solar |
| Scituate PV | AES Distributed Energy | Scituate, MA | 3 GWh | Sep 2013 | Dec 2025 | Solar |
| Barre Solar III LLC | AES Distributed Energy | Barre, MA | 1 GWh | Feb 2018 | Dec 2025 | Solar |
| Dynamic - Walpole | AES Distributed Energy | Walpole, MA | 2 GWh | May 2017 | Dec 2025 | Solar |
| Founders Homestead Farms Solar | AES Distributed Energy | Portsmouth, RI | 6 GWh | Nov 2019 | May 2026 | Solar |
| Richmond NMCA | AES Distributed Energy | Wood River Junction, RI | 6 GWh | Nov 2018 | May 2026 | Solar |
| Williamsburg | AES Distributed Energy | Goshen, MA | 6 GWh | Jun 2019 | Dec 2025 | Solar |
| Palmer | AES Distributed Energy | Palmer, MA | 6 GWh | Sep 2019 | Dec 2025 | Solar |
| Bolton PV | AES Distributed Energy | Bolton, MA | 6 GWh | Nov 2013 | Dec 2025 | Solar |
| Stow PV | AES Distributed Energy | Stow, MA | 3 GWh | Nov 2013 | Dec 2025 | Solar |
| Cronin Road Solar 1, LLC CSG Hybrid | AES Distributed Energy | Warren, MA | 3 GWh | May 2020 | Dec 2025 | Solar |
| Ryan Road Solar LLC Hybrid(CSG) | AES Distributed Energy | North Brookfield, MA | 10 GWh | Nov 2021 | Dec 2025 | Solar |
| W. Orange Rd Solar LLC | AES Distributed Energy | Orange, MA | 8 GWh | Aug 2021 | Dec 2025 | Solar |
| Wilbur Woods Solar LLC | AES Distributed Energy | Orange, MA | 8 GWh | Aug 2021 | Dec 2025 | Solar |
| West Street Solar 1 LLC | AES Distributed Energy | Gardner, MA | 8 GWh | Nov 2019 | Dec 2025 | Solar |
| Spring Hill Road | AES Distributed Energy | Barre, MA | 243 MWh | Nov 2015 | May 2026 | Solar |
| Southbridge Solar | AES Distributed Energy | Southbridge, MA | 2 GWh | Feb 2016 | Mar 2026 | Solar |
| Partridge Hill Solar Hybrid | AES Distributed Energy | Charlton, MA | 3 GWh | Jun 2020 | Dec 2025 | Solar |
| Caterpillar Hill | AES Clean Energy | Sedgwick, ME | 9 GWh | Nov 2023 | Dec 2025 | Solar |
| Exeter Renewables 1 | AES Clean Energy | Exeter, RI | 16 GWh | Nov 2024 | Dec 2025 | Solar |
| Westport Stone & Sand Solar (CSG) | AES Clean Energy | Westport, MA | 7 GWh | Feb 2024 | Dec 2025 | Solar |
| Treasure Lane Solar 1 | AES Clean Energy | Manchester, ME | 8 GWh | Apr 2023 | Dec 2025 | Solar |
| Aegean Drive Solar | Aegean Drive Solar LLC | Methuen, MA | 2 GWh | Aug 2021 | Dec 2025 | Solar |
| Hope Farm Solar, LLC | Adapture Renewables, Inc. | Cranston, RI | 16 GWh | Aug 2019 | Dec 2025 | Solar |
| North Stonington Solar Center, LLC | Adapture Renewables, Inc. | North Stonington, CT | 32 GWh | Sep 2022 | Dec 2025 | Solar |
| Acton | Acton H Road Solar 1, LLC | Acton, ME | 5 GWh | Nov 2021 | Dec 2025 | Solar |
| 77 Farm to Market Rd Hybrid(CSG) | 77F2M WHAM8 Solar, LLC | Wareham, MA | 9 GWh | Nov 2021 | Dec 2024 | Solar |
| 71 Charlotte Furnace Rd Hybrid(CSG) | 71CFR WHAM8 Solar, LLC | Wareham, MA | 2 GWh | Nov 2021 | Dec 2024 | Solar |
| 59 Federal Rd(CSG) | 59FED WHAM8 Solar, LLC | Carver, MA | 11 GWh | Oct 2021 | Dec 2024 | Solar |
| 515 Main Saugus | 515 Main Saugus LLC | Saugus, MA | 2 GWh | Aug 2017 | Dec 2025 | Solar |
| Bowden Solar LLC | 38DN Power Fund 1 LLC | Monson, MA | 3 GWh | Feb 2019 | Dec 2025 | Solar |
| Dudley River Solar, LLC CSG | 38 Degrees North, LLC | Southbridge, MA | 2 GWh | Oct 2017 | Dec 2025 | Solar |
| Ledeaux Solar, LLC CSG | 38 Degrees North, LLC | North Brookfield, MA | 1 GWh | Oct 2017 | Dec 2025 | Solar |
| Cohasse Solar, LLC CSG | 38 Degrees North, LLC | Southbridge, MA | 1 GWh | Sep 2017 | Dec 2025 | Solar |
| Palombo Solar, LLC CSG | 38 Degrees North, LLC | Uxbridge, MA | 3 GWh | Nov 2017 | Dec 2025 | Solar |
| Palombo B Solar, LLC CSG | 38 Degrees North, LLC | Uxbridge, MA | 2 GWh | Nov 2017 | Dec 2025 | Solar |
| Dudley River 2 Solar, LLC CSG | 38 Degrees North, LLC | Southbridge, MA | 2 GWh | Oct 2017 | Dec 2025 | Solar |
| Dudley River 3 Solar, LLC CSG | 38 Degrees North, LLC | Southbridge, MA | 2 GWh | Oct 2017 | Dec 2025 | Solar |
| Woodchuck Solar, LLC CSG | 38 Degrees North, LLC | Spencer, MA | 2 GWh | Nov 2017 | Dec 2025 | Solar |
| JH Solar, LLC CSG | 38 Degrees North, LLC | North Brookfield, MA | 2 GWh | Oct 2017 | Dec 2025 | Solar |
| Incom Solar, LLC CSG | 38 Degrees North, LLC | Charlton, MA | 3 GWh | Oct 2017 | Dec 2025 | Solar |
| ISM Solar Dighton 2, LLC CSG | 38 Degrees North, LLC | Dighton, MA | 4 GWh | Nov 2017 | Dec 2025 | Solar |
| Cherry Valley Solar, LLC CSG | 38 Degrees North, LLC | Leicester, MA | 2 GWh | Oct 2017 | Dec 2025 | Solar |
| Barton Acres Solar, LLC CSG | 38 Degrees North, LLC | Phillipston, MA | 2 GWh | Sep 2017 | Dec 2025 | Solar |
| Blair Wire Village Solar, LLC CSG | 38 Degrees North, LLC | Spencer, MA | 2 GWh | Nov 2017 | Dec 2025 | Solar |
| Boutillier Solar, LLC CSG | 38 Degrees North, LLC | Leicester, MA | 5 GWh | Mar 2018 | Dec 2025 | Solar |
| St. Joseph's Solar, LLC CSG | 38 Degrees North, LLC | Charlton, MA | 2 GWh | Nov 2017 | Dec 2025 | Solar |
| 3232 Batavia Solar | 3232 Batavia Solar, LLC | Batavia, NY | 7 GWh | Feb 2021 | Dec 2025 | Solar |
| 3104 Batavia Solar | 3104 Batavia Solar, LLC | Batavia, NY | 5 GWh | Feb 2021 | Dec 2025 | Solar |
| 299 Farm to Market Rd Hybrid(CSG) | 299F2M WHAM8 Solar, LLC | Wareham, MA | 6 GWh | Nov 2021 | Dec 2024 | Solar |
| 28 Livermore Hill Road Solar | 28 Livermore Hill Road Solar, LLC | Westminster, MA | 7 GWh | May 2020 | Dec 2025 | Solar |
| 276 Federal Rd(CSG) | 276FED WHAM8 Solar, LLC | Carver, MA | 10 GWh | Oct 2021 | Dec 2024 | Solar |
| FDX010.0 FedEx Fuel Cell | 2016 ESA Project Company, LLC | Middletown, CT | 8 GWh | Aug 2018 | Dec 2025 | Natural Gas |
| 196 Tremont St(CSG) | 196TRE WHAM8 Solar, LLC | Carver, MA | 4 GWh | Oct 2021 | Dec 2024 | Solar |
| 1639 RT 29 Solar 2 | 1639 RT 29 Solar 2, LLC | Gloversville, NY | 4 GWh | Nov 2020 | Dec 2025 | Solar |
| 1639 RT 29 Solar 1 | 1639 RT 29 Solar 1, LLC | Gloversville, NY | 7 GWh | Nov 2020 | Dec 2025 | Solar |
| 160 Tihonet Rd Hybrid(CSG) | 160TIH WHAM8 Solar, LLC | Wareham, MA | 10 GWh | Nov 2021 | Dec 2024 | Solar |
| 158th Fighter Wing Solar Farm | 158th Fighter Wing | South Burlington, VT | 1 GWh | Aug 2011 | Dec 2025 | Solar |
| 1519 Crandall Road | 1519 Crandall Road LLC | Tiverton, RI | 6 GWh | Nov 2020 | Dec 2025 | Solar |
| Williamsville Hybrid CSG | 147 Williamsville Solar 1, LLC | Hubbardston, MA | 9 GWh | Aug 2021 | Dec 2024 | Solar |
| 0 Hammond St CSG | 0HAM WHAM8 Solar, LLC | Carver, MA | 14 GWh | Sep 2021 | Dec 2024 | 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 |