New York Independent System Operator
Balancing Authority Summary Information
New York Independent System Operator is ranked #12 out of 64 balancing authorities in terms of total annual electricity generation.
| Balancing Authority | New York Independent System Operator |
|---|---|
| States | New Jersey New York |
| Last Update | Jul 2026 |
| Annual Generation | 134.3 TWh |
| Power Plants | 1,299 |
| Utilities | 614 |
| Ranked #12 out of 64 in terms of net annual generation | |
| Ranked #9 out of 53 in terms of annual generation from natural gas | |
| Power Plant Types | Natural Gas | 54.3% Nuclear | 19.7% Water | 17.8% Wind | 5% Other Fuel | 2.9% |
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Daily Net Generation for New York Independent System Operator for the past 3 Years
| Plant Name | Utility | Location | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|
| Brentwood | New York Power Authority | Long Island, NY | 41 GWh | Jun 2001 | Dec 2025 | Natural Gas |
| Ashokan | New York Power Authority | Kingston, NY | 11 GWh | Oct 1982 | Dec 2025 | Water |
| Jarvis (Hinckley) | New York Power Authority | Hinckley, NY | 20 GWh | Jun 1991 | Dec 2025 | Water |
| North 1st | New York Power Authority | Brooklyn, NY | 93 GWh | Jul 2001 | Dec 2025 | Natural Gas |
| Grahamsville | New York Power Authority | Grahamsville, NY | 85 GWh | Dec 1955 | Dec 2025 | Water |
| Pouch | New York Power Authority | Staten Island, NY | 62 GWh | Jul 2001 | Dec 2025 | Natural Gas |
| Crescent | New York Power Authority | Crescent, NY | 50 GWh | Jun 1924 | Dec 2025 | Water |
| Vischer Ferry | New York Power Authority | Rexford, NY | 47 GWh | Jun 1924 | Dec 2025 | Water |
| Robert Moses Niagara | New York Power Authority | Lewiston, NY | 14 TWh | Dec 1960 | May 2026 | Water |
| Robert Moses Power Dam | New York Power Authority | Massena, NY | 7 TWh | Jun 1958 | May 2026 | Water |
| Zeltmann | New York Power Authority | Astoria, NY | 2 TWh | Nov 2005 | May 2026 | Natural Gas |
| Harlem River Yard | New York Power Authority | Bronx, NY | 115 GWh | Jun 2001 | Dec 2025 | Natural Gas |
| Richard M Flynn | New York Power Authority | Holtsville, NY | 347 GWh | Apr 1994 | Dec 2025 | Natural Gas : 93.8% Distillate Fuel Oil : 6.2% |
| Hell Gate | New York Power Authority | Bronx, NY | 120 GWh | Jun 2001 | Dec 2025 | Natural Gas |
| Vernon Boulevard | New York Power Authority | Long Island City, NY | 120 GWh | Jul 2001 | Dec 2025 | Natural Gas |
| Joseph J Seymour Power Project | New York Power Authority | Brooklyn, NY | 99 GWh | Jun 2001 | Dec 2025 | Natural Gas |
| New York Presbyterian Hospital-168th St | New York Presbyterian Hospital- 168th Street | New York, NY | 78 MWh | Dec 1999 | Dec 2025 | Distillate Fuel Oil |
| Harris Lake | New York State Elec & Gas Corp | Town of Newcomb, NY | 243 MWh | Aug 1967 | Dec 2025 | Distillate Fuel Oil |
| Mill C | New York State Elec & Gas Corp | Town of Plattsburgh, NY | 22 GWh | Jul 1943 | Dec 2025 | Water |
| Rainbow Falls Auscble | New York State Elec & Gas Corp | Town of Auscble, NY | 8 GWh | Jul 1926 | May 2025 | Water |
| Upper Mechanicville | New York State Elec & Gas Corp | Town of Stillwater, NY | 79 GWh | Aug 1983 | Dec 2024 | Water |
| Cadyville | New York State Elec & Gas Corp | Town ofSchuyler Falls, NY | 18 GWh | Jul 1921 | Dec 2025 | Water |
| New York University Central Plant | New York University | New York, NY | 79 GWh | Dec 1983 | Dec 2025 | Natural Gas : 96.5% Distillate Fuel Oil : 3.5% |
| Bronx Zoo | New York Zoological Society | New York, NY | 21 GWh | Dec 1990 | Dec 2025 | Natural Gas |
| Newfield Community Solar LLC | Newfield Solar LLC | Newfield, NY | 8 GWh | Dec 2018 | Dec 2025 | Solar |
| NewYork-Presbyterian Brooklyn Methodist | NewYork-Presbyterian Brooklyn Methodist Hospital | Brooklyn, NY | 29 MWh | Dec 1990 | Dec 2025 | Distillate Fuel Oil |
| Stony Brook Cogen Plant | Nissequoque Cogen Partners | Stony Brook, NY | 285 GWh | Mar 1995 | Dec 2025 | Natural Gas |
| Maybrook Solar, LLC (CSG) | NJR Clean Energy Ventures Corporation | Campbell Hall, NY | 9 GWh | Jan 2023 | Dec 2025 | Solar |
| Airport Road Solar (CSG) | NJR Clean Energy Ventures Corporation | Wawayanda, NY | 8 GWh | Aug 2022 | Dec 2025 | Solar |
| World Generation X | North American Energy Services | North Tonawanda, NY | 404 GWh | Jun 1993 | Dec 2025 | Natural Gas |
| Kosterville | Northbrook Lyons Falls LLC | Lyonsdale, NY | 2 GWh | Apr 1955 | Dec 2025 | Water |
| Gouldtown | Northbrook Lyons Falls LLC | Lyonsdale, NY | 6 GWh | Jul 1953 | Dec 2025 | Water |
| Lyons Falls Hydroelectric | Northbrook Lyons Falls LLC | Lyons Falls, NY | 27 GWh | Nov 1923 | Dec 2025 | Water |
| Musgrave East Solar Farm | Novis Renewables, LLC | Aurora, NY | 3 GWh | Nov 2016 | Dec 2025 | Solar |
| Union Springs 40 | Novis Renewables, LLC | Union Spring, NY | 8 GWh | Jan 2022 | Dec 2025 | Solar |
| Union Springs 963 | Novis Renewables, LLC | Union Spring, NY | 9 GWh | Dec 2021 | Dec 2025 | Solar |
| North Eagle Village Solar | Novis Renewables, LLC | Manilus, NY | 7 GWh | Dec 2021 | Dec 2025 | Solar |
| Green Lakes Solar | Novis Renewables, LLC | Manilus, NY | 8 GWh | Feb 2022 | Dec 2025 | Solar |
| Judd Road Solar | Novis Renewables, LLC | Oriskany, NY | 8 GWh | Feb 2022 | Dec 2025 | Solar |
| Harford Solar Farm | Novis Renewables, LLC | Harford, NY | 2 GWh | Nov 2016 | Dec 2025 | Solar |
| Cornell Snyder Road Solar Array | Novis Renewables, LLC | Lansing, NY | 1 GWh | Oct 2014 | Dec 2025 | Solar |
| Musgrave West Solar Farm | Novis Renewables, LLC | Aurora, NY | 2 GWh | Nov 2016 | Dec 2025 | Solar |
| Cornell Geneva Solar Farm | Novis Renewables, LLC | Seneca, NY | 2 GWh | Nov 2015 | Dec 2025 | Solar |
| Angelica Solar Site 1 | NSF Angelica Site 1, LLC | Angelica, NY | 8 GWh | Apr 2022 | Dec 2025 | Solar |
| Angelica Solar Site 2 | NSF Angelica Site 2, LLC | Belfast, NY | 8 GWh | Apr 2022 | Dec 2025 | Solar |
| Angelica Solar Site 3 | NSF Angelica Site 3, LLC | Belfast, NY | 8 GWh | Apr 2022 | Dec 2025 | Solar |
| Angelica Solar Site 4 | NSF Angelica Site 4, LLC | Angelica, NY | 8 GWh | Apr 2022 | Dec 2025 | Solar |
| NSF Chateaugay Site 1 | NSF Chateaugay Site 1 LLC | Chateaugay, NY | 7 GWh | Dec 2024 | Dec 2025 | Solar |
| NSF Chateaugay Site 2 | NSF Chateaugay Site 2 LLC | Chateaugay, NY | 6 GWh | Dec 2024 | Dec 2025 | Solar |
| NSF Aurelius Site 3 LLC | NSF Energy One LLC | Auburn, NY | 9 GWh | May 2024 | Dec 2025 | Solar |
| NSF Aurelius Site 4 LLC | NSF Energy One LLC | Auburn, NY | 7 GWh | May 2024 | Dec 2025 | Solar |
| NSF Aurelius Site 2, LLC | NSF Energy One LLC | Auburn, NY | 9 GWh | May 2024 | Dec 2025 | Solar |
| NSF Aurelius Site 1 LLC | NSF Energy One LLC | Auburn, NY | 9 GWh | May 2024 | Dec 2025 | Solar |
| NSF Edmeston Site 2 | NSF Energy Three LLC | South Edmeston, NY | 2 GWh | Aug 2025 | Dec 2025 | Solar |
| NSF Edmeston Site 1 | NSF Energy Three LLC | South Edmeston, NY | 2 GWh | Aug 2025 | Dec 2025 | Solar |
| NSF Danby Site 1, LLC | NSF Energy Two, LLC | Ithaca, NY | 6 GWh | Nov 2024 | Dec 2025 | Solar |
| NSF Danby Site 2, LLC | NSF Energy Two, LLC | Ithaca, NY | 5 GWh | Nov 2024 | Dec 2025 | Solar |
| NSF Danby Site 3, LLC | NSF Energy Two, LLC | Ithaca, NY | 5 GWh | Nov 2024 | Dec 2025 | Solar |
| Enfield Solar Site 1 | NSF Enfield Site 1, LLC | Enfield, NY | 7 GWh | Oct 2024 | Dec 2025 | Solar |
| Enfield Solar Site 2 | NSF Enfield Site 2, LLC | Enfield, NY | 7 GWh | Oct 2024 | Dec 2025 | Solar |
| Enfield Solar Site 3 | NSF Enfield Site 3, LLC | Enfield, NY | 7 GWh | Oct 2024 | Dec 2025 | Solar |
| NSF Marshall Site 1 | NSF Marshall Site 1, LLC | Marshall, NY | 237 MWh | Oct 2025 | Dec 2025 | Solar |
| NSF Marshall Site 2 | NSF Marshall Site 2, LLC | Marshall, NY | 320 MWh | Oct 2025 | Dec 2025 | Solar |
| NSF Marshall Site 3 | NSF Marshall Site 3, LLC | Marshall, NY | 191 MWh | Oct 2025 | Dec 2025 | Solar |
| NSF Torrey Site 1 | NSF Torrey Site 1, LLC | Torrey, NY | 9 GWh | Oct 2023 | Dec 2025 | Solar |
| NSF Torrey Site 2 | NSF Torrey Site 2, LLC | Torrey, NY | 9 GWh | Oct 2023 | Dec 2025 | Solar |
| NSF Torrey Site 3 | NSF Torrey Site 3, LLC | Torrey, NY | 9 GWh | Oct 2023 | Dec 2025 | Solar |
| NY - Mines Press | NY - Mines Press | Cortlandt, NY | 27 MWh | Nov 2021 | Dec 2024 | Solar |
| New York Presbyterian Hospital- 68th Street | NY - PRESBYTERIAN HOSPITAL- 68TH ST | New York, NY | 54 GWh | Mar 1997 | Dec 2025 | Natural Gas : 99.8% |
| NY 24 Sherman LLC | NY 24 Sherman LLC | Gavensvoort, NY | 5 GWh | Sep 2025 | Dec 2025 | Solar |
| NY 5 King LLC | NY 5 King LLC | Wilton, NY | 5 GWh | Sep 2025 | Dec 2025 | Solar |
| NY CDG 010 | NY CDG 010 LLC | Astoria, NY | 1 GWh | Feb 2025 | Oct 2025 | Solar |
| NY PAVILION 6464 SHEPARD RD - Genesee 4 | NY CDG Genesee 4 LLC | Pavilion, NY | 6 GWh | Dec 2024 | Dec 2025 | Solar |
| NY FONDA 182 BOSHART RD - Montgomery 1 | NY CDG Montgomery 1 LLC | Fonda, NY | 5 GWh | Jun 2025 | Dec 2025 | Solar |
| Ontario 2 CDG | NY CDG Ontario 2, LLC | Phelps, NY | 5 GWh | May 2025 | Dec 2025 | Solar |
| NY Country Road 67 and Majorana | NY Country Road 67 and Majorana | Poughkeepsie, NY | 184 MWh | Oct 2025 | Dec 2025 | Solar |
| Old Route 17 | NY Thompson III, LLC | Harris, NY | 5 GWh | Mar 2025 | Dec 2025 | Solar |
| Albion A | NY USLE Albion Long Bridge A LLC | Albion, NY | 8 GWh | Jan 2025 | Dec 2025 | Solar |
| Carthage A | NY USLE Carthage SR26 A LLC | Carthage, NY | 8 GWh | Mar 2022 | Dec 2025 | Solar |
| Carthage B | NY USLE Carthage SR26 B LLC | Carthage, NY | 5 GWh | Feb 2022 | Dec 2025 | Solar |
| Copenhagen Solar | NY USLE Copenhagen CR194 LLC | Copenhagen, NY | 5 GWh | Apr 2024 | Dec 2025 | Solar |
| Glenville Solar (CSG) | NY USLE Glenville Freemans Bridge LLC | Glenville, NY | 7 GWh | Nov 2023 | Dec 2025 | Solar |
| Oswego | NY USLE Oswego SR104 LLC | Oswego, NY | 7 GWh | Aug 2023 | Dec 2025 | Solar |
| NY USLE Rome-Oriskany | NY USLE Rome Rome-Oriskany LLC | Rome, NY | 5 GWh | Jun 2023 | Dec 2025 | Solar |
| NY- CSG- Johnstown 2 | NY- CSG- Johnstown 2 | New York, NY | 2 GWh | Feb 2020 | Dec 2025 | Solar |
| NY- CSG- Livingston 4 | NY- CSG- Livingston 4 | Caledonia, NY | 2 GWh | Jan 2020 | Dec 2025 | Solar |
| NYC-HH - CONEY ISLAND HOSPITAL | NYC-HH Coney Island Hospital | Brooklyn, NY | 257 MWh | Jun 1993 | Dec 2025 | Distillate Fuel Oil |
| NYC-HH-New Bellevue Hospital | NYC-HH-New Bellevue Hospital | New York, NY | 109 MWh | Dec 1995 | Dec 2025 | Distillate Fuel Oil |
| NYP-Hudson Valley Hospital Center | NYP-Hudson Valley Hospital Center | Cortlandt Manor, NY | 34 MWh | Dec 2009 | Dec 2025 | Distillate Fuel Oil |
| NYP-Lower Manhattan Hospital | NYP-Lower Manhattan Hospital | New York, NY | 20 MWh | Dec 1991 | Dec 2025 | Distillate Fuel Oil |
| NYPH-Queens | NYPH-Queens | Flushing, NY | 212 MWh | Dec 1999 | Dec 2025 | Distillate Fuel Oil |
| NY Geneseo 3240 W Lake Rd Solar | NYSolar03 LLC | Geneseo, NY | 6 GWh | Jan 2024 | Dec 2025 | Solar |
| NYU Langone Hospital- Brooklyn | NYU Langone Health | New York City, NY | 486 MWh | Dec 1993 | Dec 2024 | Natural Gas : 97.8% Distillate Fuel Oil : 2.2% |
| NYU LANGONE HEALTH | NYU LANGONE HEALTH | New York, NY | 46 GWh | Sep 1992 | Dec 2025 | Natural Gas : 99.1% Distillate Fuel Oil : 0.9% |
| Off Airport Road - West | Off Airport Road - West, LLC | Accord, NY | 6 GWh | Nov 2019 | Dec 2025 | Solar |
| Camden CSD Solar Array | Onsite Partners, LLC | Camden, NY | 2 GWh | Nov 2017 | Dec 2024 | Solar |
| Madison County | Onsite Partners, LLC | Canastota, NY | 2 GWh | Jul 2017 | Dec 2024 | Solar |
| Garnet Solar (NY) | Onsite Partners, LLC | Johnsburg, NY | 3 GWh | May 2018 | Dec 2025 | Solar |
| Letchworth Solar Project | Onsite Partners, LLC | Gainesville, NY | 2 GWh | May 2017 | Dec 2025 | Solar |
| Bloom-Altice Fuel Cell | Onsite Partners, LLC | Bethpage,, NY | 16 GWh | Sep 2020 | Dec 2024 | Natural Gas |
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 |
| #15 | ISO New England | 111.1 TWh | 1,629 |
| #23 | Louisville Gas and Electric Company and Kentucky Utilities Company | 33.9 TWh | 25 |
| #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 |
|---|---|---|---|
| #6 | Southern Company Services, Inc. - Trans | 253.5 TWh | 422 |
| #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 |