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 |
|---|---|---|---|---|---|---|
| Renew Canal 1 CSG LLC | NRG Renew Canal 1 LLC | Sandwich, MA | 2 GWh | May 2017 | Dec 2024 | Solar |
| Solar Mule, LLC | Solar Mule, LLC | Oakland, ME | 2 GWh | Aug 2017 | Dec 2024 | Solar |
| Orbit Energy RI | Anaergia | Johnston, RI | 144 MWh | Jun 2017 | Dec 2024 | Other Biomass Gas |
| Curtis Hill Solar CSG | CCC Solar Holdings LLC | Charlton, MA | 3 GWh | Sep 2016 | Dec 2024 | Solar |
| Hartford Landfill Solar EGF | Materials Innovation Recycling Authority | Hartford, CT | 1 GWh | May 2014 | Dec 2024 | Solar |
| Spring Street Solar 1 CSG | Spring Street Solar 1, LLC | Carver, MA | 3 GWh | Feb 2017 | Dec 2024 | Solar |
| Stafford St Solar 1 CSG | Stafford St Solar 1, LLC | Leicester, MA | 4 GWh | Nov 2017 | Dec 2024 | Solar |
| Stafford St 2 Community Solar | Stafford St Solar 2, LLC | Lecister, MA | 4 GWh | Apr 2018 | Dec 2024 | Solar |
| Stafford St Solar 3 CSG | Stafford St Solar 3, LLC | Leicester, MA | 2 GWh | Nov 2017 | Dec 2024 | Solar |
| IOS - MEW Phase 1 | Madison Energy Holdings LLC | Madison, ME | 1 GWh | Dec 2016 | Dec 2024 | Solar |
| Antanavica Solar | SunStrong Management, LLC | Leicester, MA | 1 GWh | Jul 2018 | Dec 2024 | Solar |
| Barrett Farm Solar - Phase I | Onyx Asset Services Group | Thompson, CT | 3 GWh | Sep 2017 | Dec 2024 | Solar |
| Naval Sub Base New London Fuel Cell | Groton Station Fuel Cell, LLC | Groton, CT | 44 GWh | Nov 2022 | Dec 2024 | Natural Gas |
| Trinity College Fuel Cell | Onsite Partners, LLC | Hartford, CT | 12 GWh | Jul 2018 | Dec 2024 | Natural Gas |
| Winchendon Landfill Solar | Onyx Asset Services Group | Winchendon, MA | 3 GWh | Sep 2018 | Dec 2024 | Solar |
| Manchester Community College East | Onyx Asset Services Group | Manchester, CT | 2 GWh | Sep 2018 | Dec 2024 | Solar |
| Manchester Community College North | Onyx Asset Services Group | Great Path, CT | 1 GWh | Sep 2018 | Dec 2024 | Solar |
| Happy Hollow CSG Hybrid | REA Investments, LLC | Winchendon, MA | 9 GWh | Sep 2019 | Dec 2024 | Solar |
| Middleton Solar Park | Novis Renewables, LLC | Middleton, MA | 7 GWh | May 2018 | Dec 2024 | Solar |
| Natick Mall | Natick Mall | Natick, MA | 4 GWh | Dec 2014 | Dec 2024 | Solar |
| Ticket Network South Windsor | Powerflex | South Windsor, CT | 2 GWh | Apr 2018 | Dec 2024 | Solar |
| Partridgeville Hybrid CSG | Partridgeville Road Solar 1, LLC | Athol, MA | 6 GWh | Dec 2019 | Dec 2024 | Solar |
| Williamsville Hybrid CSG | 147 Williamsville Solar 1, LLC | Hubbardston, MA | 9 GWh | Aug 2021 | Dec 2024 | Solar |
| Ware Palmer Road Solar LLC CSG | Ware Palmer Road Solar LLC | Ware, MA | 5 GWh | May 2021 | Dec 2024 | Solar |
| Georges River Energy | Robbins Lumber Inc | Searsmont, ME | 52 GWh | Nov 2018 | Dec 2024 | Wood/Wood Waste Solids |
| Breckenridge Solar | Breckenridge Street Solar 1, LLC | Palmer, MA | 7 GWh | Oct 2020 | Dec 2024 | Solar |
| Town of Ware - Canadian Tree(CSG) | MA CS Ware West, LLC | Ware, MA | 2 GWh | Nov 2021 | Dec 2024 | Solar |
| Wilmarth Solar | Wilmarth Lane Solar 1, LLC | Plainville, MA | 8 GWh | Jan 2020 | Dec 2024 | Solar |
| Joe Jenny | AMP MA Joe Jenny | Oxford, MA | 2 GWh | Apr 2018 | Dec 2024 | Solar |
| Westport Community Solar Garden | BWC Bass River LLC | Westport, MA | 4 GWh | Jun 2017 | Dec 2024 | Solar |
| Mendon | BWC Box Pond LLC | Mendon, MA | 4 GWh | Nov 2017 | Dec 2024 | Solar |
| Dover (MA) | BWC Buckmaster Pond LLC | Dover, MA | 2 GWh | Jul 2017 | Dec 2024 | Solar |
| Adirondack A+B Community Solar Garden | BWC Connecticut River LLC | Westport, MA | 8 GWh | Nov 2018 | Dec 2024 | Solar |
| Blodgett Solar CSG | Blodgett Street Solar 1, LLC | Tyngsboro, MA | 10 GWh | Jul 2021 | Dec 2024 | Solar |
| Maple(CSG) | Maple Street Solar 1, LLC | Bellingham, MA | 7 GWh | Oct 2021 | Dec 2024 | Solar |
| Three Rivers Solar LLC | ASD Three Rivers Road MA Solar LLC | Wilbraham, MA | 154 MWh | Oct 2024 | Dec 2024 | Solar |
| 276 Federal Rd(CSG) | 276FED WHAM8 Solar, LLC | Carver, MA | 10 GWh | Oct 2021 | Dec 2024 | Solar |
| 0 Hammond St CSG | 0HAM WHAM8 Solar, LLC | Carver, MA | 14 GWh | Sep 2021 | Dec 2024 | Solar |
| 59 Federal Rd(CSG) | 59FED WHAM8 Solar, LLC | Carver, MA | 11 GWh | Oct 2021 | Dec 2024 | Solar |
| ASD Cotuit MA Solar LLC | ASD Cotuit MA Solar LLC | Sandwich, MA | 2 GWh | Oct 2023 | Dec 2024 | Solar |
| ASD Wallum MA Solar LLC(CSG) | ASD Wallum MA Solar LLC | Douglas, MA | 9 GWh | Dec 2021 | Dec 2024 | Solar |
| 71 Charlotte Furnace Rd Hybrid(CSG) | 71CFR WHAM8 Solar, LLC | Wareham, MA | 2 GWh | Nov 2021 | Dec 2024 | Solar |
| 77 Farm to Market Rd Hybrid(CSG) | 77F2M WHAM8 Solar, LLC | Wareham, MA | 9 GWh | Nov 2021 | Dec 2024 | Solar |
| 160 Tihonet Rd Hybrid(CSG) | 160TIH WHAM8 Solar, LLC | Wareham, MA | 10 GWh | Nov 2021 | Dec 2024 | Solar |
| 299 Farm to Market Rd Hybrid(CSG) | 299F2M WHAM8 Solar, LLC | Wareham, MA | 6 GWh | Nov 2021 | Dec 2024 | Solar |
| 196 Tremont St(CSG) | 196TRE WHAM8 Solar, LLC | Carver, MA | 4 GWh | Oct 2021 | Dec 2024 | Solar |
| Nolan | LSE Crater LLC | Great Barrington, MA | 2 GWh | Oct 2017 | Dec 2024 | Solar |
| Truck Stop | LSE Corona Austrina LLC | West Stockridge, MA | 3 GWh | Oct 2017 | Dec 2024 | Solar |
| Bradford Solar | Bradford Solar, LLC | Haverhill, MA | 8 GWh | Mar 2017 | Dec 2024 | Solar |
| Faunce Corner Community Solar | Faunce Corner Road Dartmouth Solar 1, LLC | Dartmouth, MA | 2 GWh | Jun 2022 | Dec 2024 | Solar |
| North Kingstown Solar LLC | North Kingstown Solar LLC | North Kingstown, RI | 3 GWh | Aug 2022 | Dec 2024 | Solar |
| Norcap North | LSE Canes Venatici LLC | East Windsor, CT | 3 GWh | Nov 2017 | Dec 2024 | Solar |
| Powder Hill | LSE Delphinus LLC | Enfield, CT | 3 GWh | Nov 2020 | Dec 2024 | Solar |
| Monument Valley | LSE Lepus LLC | Great Barrington, MA | 3 GWh | Dec 2021 | Dec 2024 | Solar |
| Sandwich | LSE Ophiuchus LLC | Sandwich, MA | 5 GWh | Jun 2023 | Dec 2024 | Solar |
| Dynamic Energy CT STAG | Milford Pepes Farm Road Solar LLC | Milford, CT | 2 GWh | Jul 2023 | Dec 2024 | Solar |
| CP East Hampton I & II Solar | NJR Clean Energy Ventures Corporation | East Hampton, CT | 3 GWh | Jan 2021 | Dec 2024 | Solar |
| Waterboro | Madison Energy Investments LLC | East Waterboro, ME | 3 GWh | Jun 2023 | Dec 2024 | Solar |
| New Marlborough | Sunrise on Knight Rd. LLC | New Marlborough, MA | 7 GWh | May 2021 | Dec 2024 | Solar |
| Peru (MA) | Sunrise on West Main Rd. LLC | Peru, MA | 5 GWh | Oct 2020 | Dec 2024 | Solar |
| Russell (MA) | Sunrise on Blandford Rd. LLC | Russell, MA | 5 GWh | Oct 2020 | Dec 2024 | Solar |
| Tolland | Sunrise on Clubhouse Rd. LLC | Tolland, MA | 8 GWh | Nov 2020 | Dec 2024 | Solar |
| Westhampton | Sunrise on Montague Rd. LLC | Westhampton, MA | 7 GWh | Nov 2020 | Dec 2024 | Solar |
| Westport (MA) | Sunrise on Drift Rd. LLC | Westport, MA | 4 GWh | Sep 2020 | Dec 2024 | Solar |
| Saddleback Solar | SoCore Energy LLC | Lanesborough, MA | 4 GWh | Aug 2022 | Dec 2024 | Solar |
| Adams Grove Solar | SoCore Energy LLC | Adams, MA | 6 GWh | Aug 2022 | Dec 2024 | Solar |
| Apollo | Sunrise on Wing Ln. LLC | Acushnet, MA | 2 GWh | Aug 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 |