ISO New England
Balancing Authority Summary Information
ISO New England is ranked #15 out of 65 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 | Nov 2025 |
| Annual Generation | 105.5 TWh |
| Power Plants | 1,577 |
| Utilities | 819 |
| Ranked #15 out of 65 in terms of net annual generation | |
| Ranked #12 out of 53 in terms of annual generation from natural gas | |
| Power Plant Types | Natural Gas | 55.8% Nuclear | 26% Water | 5% Other Fuel | 4.4% Wind | 4% Solar | 1.5% Coal | 0.4% |
Map of ISO New England
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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 |
|---|---|---|---|---|---|---|
| 580 River Solar | NuGen Capital Management | Winchendon, MA | 5 GWh | Aug 2018 | Dec 2024 | Solar |
| 59 Federal Rd(CSG) | 59FED WHAM8 Solar, LLC | Carver, MA | 11 GWh | Oct 2021 | Dec 2024 | Solar |
| 651 Chase Solar NG | NuGen Capital Management | Lunenburg, MA | 4 GWh | May 2014 | Dec 2024 | Solar |
| 700 Binnewater | Madison Energy Investments LLC | Rosendale, NY | 2 GWh | Aug 2022 | 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 |
Surrounding Balancing Authorities
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #61 | Alcoa Power Generating, Inc. - Yadkin Division | 696.7 GWh | 4 |
| #25 | Dominion Energy South Carolina, Inc. | 25.7 TWh | 87 |
| #13 | Duke Energy Carolinas | 112.5 TWh | 565 |
| #17 | Duke Energy Progress East | 64.3 TWh | 559 |
| #52 | Duke Energy Progress West | 4.3 TWh | 10 |
| #24 | Louisville Gas and Electric Company and Kentucky Utilities Company | 34.4 TWh | 25 |
| #12 | New York Independent System Operator | 131.6 TWh | 1,211 |
| #1 | PJM Interconnection, LLC | 870.7 TWh | 2,465 |
| #30 | South Carolina Public Service Authority | 18.9 TWh | 34 |
| #59 | Southeastern Power Administration | 1.5 TWh | 11 |
Balancing Authorities with Similar Net Generation
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #7 | California Independent System Operator | 188.0 TWh | 2,075 |
| #9 | Tennessee Valley Authority | 161.6 TWh | 204 |
| #10 | Florida Power & Light Co. | 148.9 TWh | 187 |
| #12 | New York Independent System Operator | 131.6 TWh | 1,211 |
| #13 | Duke Energy Carolinas | 112.5 TWh | 565 |
| #15 | ISO New England | 105.5 TWh | 1,577 |
| #16 | Bonneville Power Administration | 80.5 TWh | 163 |
| #17 | Duke Energy Progress East | 64.3 TWh | 559 |
| #18 | PacifiCorp East | 61.1 TWh | 216 |
| #19 | Salt River Project Agricultural Improvement and Power District | 60.0 TWh | 48 |