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 |
|---|---|---|---|---|---|---|
| Mars Hill | Greenbacker Renewable Energy Corporation | Mars Hill, ME | 4 GWh | Oct 2024 | Dec 2025 | Solar |
| BNRG Norridgewock (CSG) | Nautilus Solar Solutions | Norridgewock, ME | 3 GWh | Oct 2024 | Dec 2025 | Solar |
| BNRG North Anson (CSG) | Nautilus Solar Solutions | North Anson, ME | 3 GWh | Oct 2024 | Dec 2025 | Solar |
| Swaggertown Solar I | Green Street Power Partners | Glenville, NY | 4 GWh | Oct 2024 | Dec 2025 | Solar |
| MD - EDFR - Phase II - Lewiston | Hayworth Solar Partners, LLC | Lewiston, ME | 8 GWh | Oct 2024 | Dec 2025 | Solar |
| Three Rivers Solar LLC | ASD Three Rivers Road MA Solar LLC | Wilbraham, MA | 154 MWh | Oct 2024 | Dec 2024 | Solar |
| FedEx Middletown | VCP Realty, LLC | Middletown, CT | 2 GWh | Oct 2024 | Dec 2025 | Solar |
| Limestone CSG 1 LLC | Limestone CSG 1 LLC | Limestone, ME | 6 GWh | Nov 2024 | Dec 2025 | Solar |
| Cenergy - Pulk | BAP Grounded 2 LLC | Sabattus, ME | 8 GWh | Nov 2024 | Dec 2025 | Solar |
| Dynamic - Gray Solar | Altus Power America Management, LLC | Gray, ME | 5 GWh | Nov 2024 | Dec 2025 | Solar |
| Our Katahdin | Greenbacker Renewable Energy Corporation | Millenocket, ME | 6 GWh | Nov 2024 | Dec 2025 | Solar |
| Mechanic Street (CSG) | Nautilus Solar Solutions | Presque Island, ME | 4 GWh | Nov 2024 | Dec 2025 | Solar |
| Missile Street (CSG) | Nautilus Solar Solutions | Presque Island, ME | 4 GWh | Nov 2024 | Dec 2025 | Solar |
| Exeter Ten (CSG) | Nautilus Solar Solutions | Exeter, RI | 5 GWh | Nov 2024 | Dec 2025 | Solar |
| Exeter Renewables 1 | AES Clean Energy | Exeter, RI | 16 GWh | Nov 2024 | Dec 2025 | Solar |
| BNRG Masardis (CSG) | Nautilus Solar Solutions | Masardis, ME | 4 GWh | Nov 2024 | Dec 2025 | Solar |
| BRNG Nicolin (CSG) | Nautilus Solar Solutions | Ellsworth, ME | 6 GWh | Nov 2024 | Dec 2025 | Solar |
| Norfolk Landfill Solar Project | NJR Clean Energy Ventures Corporation | Norfolk, CT | 6 GWh | Nov 2024 | Dec 2025 | Solar |
| Raffia Road Solar Project | NJR Clean Energy Ventures Corporation | Enfield, CT | 7 GWh | Nov 2024 | Dec 2025 | Solar |
| Valley Sun Solar | Valley Sun Solar LLC | Grand Isle, ME | 3 GWh | Nov 2024 | Dec 2025 | Solar |
| French Road Solar | SoCore Energy LLC | Ashland, ME | 3 GWh | Nov 2024 | Dec 2025 | Solar |
| Madawaska Solar | SoCore Energy LLC | Saint David, ME | 4 GWh | Nov 2024 | Dec 2025 | Solar |
| Caribou Solar | SoCore Energy LLC | Caribou, ME | 6 GWh | Nov 2024 | Dec 2025 | Solar |
| ME Fort Fairfield Solar Plant | ME Fort Fairfield LLC | Presque Isle, ME | 4 GWh | Nov 2024 | Dec 2025 | Solar |
| BWC Jimmie Pond | Navisun LLC | Hampden, ME | 3 GWh | Nov 2024 | Dec 2025 | Solar |
| ISM Solar Shepherd Acres | Navisun LLC | South Paris, ME | 4 GWh | Nov 2024 | Dec 2025 | Solar |
| Houlton Road Solar Farm (CSG) | REA Investments, LLC | Fort Fairfield, ME | 2 GWh | Nov 2024 | Dec 2025 | Solar |
| Lebanon CSG LLC | Dimension Energy LLC | Lebanon, ME | 6 GWh | Nov 2024 | Dec 2025 | Solar |
| Walden Solar Maine V | Walden Solar Maine V LLC | Leeds, ME | 36 GWh | Nov 2024 | Dec 2025 | Solar |
| GSPP 409 Ferris Road | Green Street Power Partners | Lawrence, NY | 8 GWh | Nov 2024 | Dec 2025 | Solar |
| GSPP 641 Ferris Road West | Green Street Power Partners | Lawrence, NY | 4 GWh | Nov 2024 | Dec 2025 | Solar |
| ME CDG 004 | ME CDG 004 LLC | Bangor, ME | 3 GWh | Nov 2024 | Dec 2025 | Solar |
| ME CDG 005 | ME CDG 005 LLC | Veazie, ME | 3 GWh | Nov 2024 | Dec 2025 | Solar |
| White Brook Renewables PV | White Brook Renewables LLC | West Greenwich, RI | 7 GWh | Nov 2024 | Dec 2025 | Solar |
| CTGB Osborn | TotalEnergies Renewables USA LLC | Somers, CT | 3 GWh | Nov 2024 | Dec 2025 | Solar |
| 20 Bedford | Madison Energy Investments LLC | Bridgewater, MA | 146 MWh | Nov 2024 | Dec 2025 | Solar |
| SP-231 Clifton | Madison Energy Investments LLC | Clifton, ME | 5 GWh | Nov 2024 | Dec 2025 | Solar |
| 376 Nash | Madison Energy Investments LLC | New Bedford, MA | 17 MWh | Nov 2024 | Dec 2025 | Solar |
| Roosevelt Trail | Madison Energy Investments LLC | Windham, ME | 1 GWh | Nov 2024 | Dec 2025 | Solar |
| SP-339 Mechanic Falls | Madison Energy Investments LLC | Mechanic Falls, ME | 1 GWh | Nov 2024 | Dec 2025 | Solar |
| Hampden Landfill Solar LLC | Hampden Landfill Solar LLC | Hampden, MA | 2 GWh | Nov 2024 | Dec 2025 | Solar |
| MEVS Waterhouse | MEVS LLC | Scarborogh, ME | 3 GWh | Nov 2024 | Dec 2025 | Solar |
| Lebanon West Lebanon Solar 1 | Lebanon West Lebanon Solar 1, LLC | Lebanon, ME | 3 GWh | Nov 2024 | Dec 2025 | Solar |
| Berwick Hubbard Solar 1 | Berwick Hubbard Solar 1, LLC | Berwick, ME | 6 GWh | Nov 2024 | Dec 2025 | Solar |
| Exeter Mail CSG | Nautilus Solar Solutions | Exeter, RI | 9 GWh | Dec 2024 | Dec 2025 | Solar |
| Amazon BDL4 | Telyon AMZ Windsor LLC | Windsor, CT | 4 GWh | Dec 2024 | Dec 2025 | Solar |
| Downeast Wind | Downeast Wind, LLC | Columbia, ME | 364 GWh | Dec 2024 | May 2026 | Wind |
| Gravel Pit Solar, LLC | Gravel Pit Solar, LLC | East Windsor, CT | 187 GWh | Jan 2025 | May 2026 | Solar |
| SR Litchfield | SR Litchfield, LLC | Litchfield, CT | 26 GWh | Jan 2025 | Dec 2025 | Solar |
| Benz Solar 1 | Ecos Energy LLC | Ansonia, CT | 1 GWh | Feb 2025 | Dec 2025 | Solar |
| Benz Solar 2 | Ecos Energy LLC | Ansonia, CT | 1 GWh | Feb 2025 | Dec 2025 | Solar |
| GD Richmond Beaver River I LLC | GD Richmond Beaver River I LLC | Richmond, RI | 6 GWh | Mar 2025 | Dec 2025 | Solar |
| Southwick Solar, LLC Community Solar | Navisun LLC | Southwick, MA | 4 GWh | Apr 2025 | Dec 2025 | Solar |
| Dudley Landfill Solar LLC | Dudley Landfill Solar LLC | Dudley, MA | 1 GWh | Apr 2025 | Dec 2025 | Solar |
| Ring Road | Greenbacker Renewable Energy Corporation | Plympton, MA | 2 GWh | May 2025 | Dec 2025 | Solar |
| Pine Hill Westport | Greenbacker Renewable Energy Corporation | Westport, MA | 3 GWh | May 2025 | Dec 2025 | Solar |
| Upland | Greenbacker Renewable Energy Corporation | Plympton, MA | 3 GWh | May 2025 | Dec 2025 | Solar |
| Moscow | Greenbacker Renewable Energy Corporation | Moscow, ME | 112 GWh | May 2025 | May 2026 | Wind |
| NL MA - Copicut | Standard Solar | Freetown, MA | 6 GWh | May 2025 | Dec 2025 | Solar |
| Pomham Islander (CSG) | Nautilus Solar Solutions | North Smithfield, RI | 1 GWh | Jun 2025 | Dec 2025 | Solar |
| CTGB Maloney and Webster | TotalEnergies Renewables USA LLC | Cheshire, CT | 3 GWh | Jun 2025 | Dec 2025 | Solar |
| East Windsor | NJR Clean Energy Ventures Corporation | East Windsor, CT | 869 MWh | Aug 2025 | Dec 2025 | Solar |
| Glastonbury Solar One | NJR Clean Energy Ventures Corporation | Glastonbury, CT | 821 MWh | Aug 2025 | Dec 2025 | Solar |
| East Windsor Solar Two | East Windsor Solar Two, LLC | East Windsor, CT | 749 MWh | Aug 2025 | Dec 2025 | Solar |
| Oak Leaf Solar XVII Community Solar | Navisun LLC | Pittsfield, MA | 47 MWh | Nov 2025 | Dec 2025 | Solar |
| Oak Leaf Solar XVI Community Solar | Navisun LLC | Pittsfield, MA | 10 MWh | Nov 2025 | Dec 2025 | Solar |
| Stanley Black & Decker | Onyx Asset Services Group | East Longmeadow, MA | 6 MWh | Nov 2025 | 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 |