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 |
|---|---|---|---|---|---|---|
| Neversink | New York Power Authority | Grahmsville, NY | 12 GWh | Nov 1953 | Nov 2025 | Water |
| Athens Generating Plant | New Athens Generating Company LLC | Athens, NY | 3 TWh | Mar 2003 | May 2026 | Natural Gas |
| Gifford CSG | Nautilus Solar Solutions | Schenectady, NY | 3 GWh | Nov 2018 | Dec 2025 | Solar |
| Howell CSG | Nautilus Solar Solutions | Middletown, NY | 3 GWh | Jan 2020 | Dec 2025 | Solar |
| Gowans (CSG) | Nautilus Solar Solutions | Angola, NY | 2 GWh | Jun 2025 | Dec 2025 | Solar |
| Hollygrove CSG | Nautilus Solar Solutions | Red Creek, NY | 3 GWh | Nov 2018 | Dec 2025 | Solar |
| Guildlerland CSG | Nautilus Solar Solutions | Guilderland, NY | 3 GWh | Nov 2018 | Dec 2025 | Solar |
| Peterboro (CSG) | Nautilus Solar Solutions | Vernon, NY | 7 GWh | May 2024 | Dec 2025 | Solar |
| Howland CSG | Nautilus Solar Solutions | Sandy Creek, NY | 3 GWh | Nov 2018 | Dec 2025 | Solar |
| Tiffany | Nautilus Solar Solutions | Norwich, NY | 8 GWh | Nov 2022 | Dec 2025 | Solar |
| Ver Plank North (CSG) | Nautilus Solar Solutions | Clay, NY | 5 GWh | Nov 2024 | Dec 2025 | Solar |
| North Woods (CSG) | Nautilus Solar Solutions | Canton, NY | 2 GWh | Jun 2025 | Dec 2025 | Solar |
| NY - CSG - Ellsworth II | Nautilus Solar Solutions | Halfmoon, NY | 4 GWh | Aug 2019 | Dec 2025 | Solar |
| Wolcott Hill (Camden) (CSG) | Nautilus Solar Solutions | Camden, NY | 6 GWh | Nov 2024 | Dec 2025 | Solar |
| Comfort CSG | Nautilus Solar Solutions | Grand Island, NY | 8 GWh | Aug 2024 | Dec 2025 | Solar |
| Mereand CSG | Nautilus Solar Solutions | Watertown, NY | 3 GWh | Nov 2018 | Dec 2025 | Solar |
| Czub CSG | Nautilus Solar Solutions | Schagticoke, NY | 3 GWh | Nov 2018 | Dec 2025 | Solar |
| Sheesley (CSG) | Nautilus Solar Solutions | Canton, NY | 7 GWh | Nov 2024 | Dec 2025 | Solar |
| Dover CSG | Nautilus Solar Solutions | Dover Plains, NY | 3 GWh | Aug 2019 | Dec 2025 | Solar |
| River Valley LLC (NY) (CSG) | Nautilus Solar Solutions | Olean, NY | 7 GWh | Nov 2021 | Dec 2025 | Solar |
| Bright Oak Solar LLC(CSG) | Nautilus Solar Solutions | Batavia, NY | 7 GWh | Nov 2021 | Dec 2025 | Solar |
| Bright Field Solar LLC(CSG) | Nautilus Solar Solutions | Burns, NY | 6 GWh | Nov 2021 | Dec 2025 | Solar |
| Pearl CSG | Nautilus Solar Solutions | Batavia, NY | 3 GWh | Nov 2018 | Dec 2025 | Solar |
| Bright Hill Solar LLC(CSG) | Nautilus Solar Solutions | Dansville, NY | 8 GWh | Nov 2021 | Dec 2025 | Solar |
| Hamlin Solar 1, LLC | Nautilus Solar Solutions | Hamlin, NY | 9 GWh | Nov 2020 | Dec 2025 | Solar |
| Clifton Park Solar 1, LLC | Nautilus Solar Solutions | Rexford, NY | 8 GWh | Nov 2020 | Dec 2025 | Solar |
| Clifton Park Solar 2, LLC | Nautilus Solar Solutions | Rexford, NY | 3 GWh | Nov 2020 | Dec 2025 | Solar |
| Bethlehem Solar | Nautilus Solar Solutions | New Scotland, NY | 3 GWh | May 2019 | Dec 2025 | Solar |
| Ellsworth I CSG | Nautilus Solar Solutions | Mechanicville, NY | 4 GWh | Aug 2019 | Dec 2025 | Solar |
| Frog Hollow CSG | Nautilus Solar Solutions | Ellenville, NY | 2 GWh | Sep 2019 | Dec 2025 | Solar |
| Ver Plank South (CSG) | Nautilus Solar Solutions | Clay, NY | 8 GWh | Nov 2024 | Dec 2025 | Solar |
| Strauss CSG | Nautilus Solar Solutions | Geneva, NY | 3 GWh | Aug 2019 | Dec 2025 | Solar |
| Altamont (NY) (CSG) | Nautilus Solar Solutions | Guilderland, NY | 3 GWh | Nov 2024 | Dec 2025 | Solar |
| Aegis CSG | Nautilus Solar Solutions | Canadaigua, NY | 3 GWh | Nov 2018 | Dec 2025 | Solar |
| Pearl II | Nautilus Solar Solutions | Batavia, NY | 3 GWh | Nov 2018 | Dec 2025 | Solar |
| Holtsville | National Grid Generation LLC | Holtsville, NY | 39 GWh | Jun 1974 | Dec 2025 | Kerosene |
| Southold | National Grid Generation LLC | Greenport, NY | 483 MWh | Jul 1964 | Dec 2025 | Distillate Fuel Oil |
| Port Jefferson | National Grid Generation LLC | Port Jefferson, NY | 416 GWh | Oct 1958 | May 2026 | Natural Gas : 81.7% Residual Fuel Oil : 17.1% Distillate Fuel Oil : 1.3% |
| Shoreham | National Grid Generation LLC | Wading River, NY | 1 GWh | Mar 1966 | Dec 2025 | Distillate Fuel Oil |
| Wading River | National Grid Generation LLC | Shoreham, NY | 17 GWh | Jul 1989 | Dec 2025 | Distillate Fuel Oil |
| South Hampton | National Grid Generation LLC | Southampton, NY | 181 MWh | Feb 1963 | Dec 2025 | Distillate Fuel Oil |
| Northport | National Grid Generation LLC | Northport, NY | 5 TWh | Feb 1967 | May 2026 | Natural Gas : 89.1% Residual Fuel Oil : 10.9% |
| Glenwood | National Grid Generation LLC | Glenwood Landing, NY | 5 GWh | May 1972 | Dec 2025 | Distillate Fuel Oil |
| East Hampton | National Grid Generation LLC | East Hampton, NY | 11 GWh | Nov 1962 | Dec 2025 | Distillate Fuel Oil |
| E F Barrett | National Grid Generation LLC | Island Park, NY | 1 TWh | Oct 1956 | May 2026 | Natural Gas : 95.7% Residual Fuel Oil : 3.7% Distillate Fuel Oil : 0.6% |
| Glenwood Landing | National Grid Generation LLC | Glenwood Landing, NY | 137 GWh | Mar 1967 | Dec 2025 | Natural Gas : 93.7% Distillate Fuel Oil : 6.3% |
| Mt. Sinai- Morningside | Mt. Sinai- Morningside | New York, NY | 17 MWh | Dec 1959 | Dec 2024 | Distillate Fuel Oil |
| MSAP 13 | MSAP 13, LLC | Troy, NY | 3 GWh | Nov 2020 | Dec 2025 | Solar |
| Edgewood Energy LLC | MPH Cross Island Power | Brentwood, NY | 32 GWh | Jun 2002 | Dec 2025 | Natural Gas |
| Shoreham Energy LLC | MPH Cross Island Power | Shoreham, NY | 1 GWh | Jun 2002 | Dec 2024 | Kerosene |
| Mount Sinai South Nassau Hospital | Mount Sinai South Nassau Hospital | Oceanside, NY | 33 MWh | Dec 1974 | Dec 2025 | Distillate Fuel Oil |
| The Mount Sinai Hospital | Mount Sinai Hospital | New York, NY | 184 MWh | May 1970 | Dec 2024 | Distillate Fuel Oil |
| Mount Sinai Beth Israel | Mount Sinai Beth Israel | New York, NY | 62 MWh | Dec 1987 | Dec 2024 | Distillate Fuel Oil |
| Mount Hope West | Mount Hope Solar 2 LLC | Mount Hope, NY | 3 GWh | Mar 2020 | Dec 2025 | Solar |
| Mount Hope East | Mount Hope Solar 1 LLC | Mount Hope, NY | 3 GWh | Sep 2019 | Oct 2025 | Solar |
| Source Power Company - Aldrich | Morristown Solar II, LLC | Brier Hill, NY | 7 GWh | Feb 2022 | Dec 2025 | Solar |
| Morris Ridge Solar | Morris Ridge Solar Energy Center, LLC | Mount Morris, NY | 306 GWh | Oct 2024 | May 2026 | Solar |
| Montefiore - Westchester Square | Montefiore-Westchester Square | Bronx, NY | 13 MWh | Jun 1983 | Dec 2025 | Distillate Fuel Oil |
| Montefiore Mount Vernon Hospital | Montefiore Mount Vernon Hospital | Mount Vernon, NY | 14 MWh | Dec 1975 | Dec 2025 | Distillate Fuel Oil |
| Montefieor Medical Center Moses Division | Montefiore Medical Center Moses Division | Bronx, NY | 32 GWh | Dec 1993 | Dec 2024 | Natural Gas : 97.9% Distillate Fuel Oil : 2.1% |
| Mohawk View Solar | Mohawk View Solar, LLC | Fultonville, NY | 8 GWh | Sep 2021 | Dec 2025 | Solar |
| Model City Energy Facility | Model City Energy LLC | Youngstown, NY | 31 GWh | May 2001 | Dec 2025 | Landfill Gas |
| NY8 - Puckett Solar | MN8 Energy LLC | Chenango Forks, NY | 32 GWh | Sep 2022 | Dec 2025 | Solar |
| NY8 - Regan Solar | MN8 Energy LLC | Mohawk, NY | 35 GWh | Nov 2022 | Dec 2025 | Solar |
| NY8 - Janis Solar | MN8 Energy LLC | Willet, NY | 31 GWh | Feb 2023 | Dec 2025 | Solar |
| Chambers 3 - Lewis County | MN8 Energy LLC | Lowville, NY | 3 GWh | Apr 2018 | Dec 2025 | Solar |
| NY8 - Branscomb Solar | MN8 Energy LLC | Schaghticoke, NY | 34 GWh | Nov 2021 | Dec 2025 | Solar |
| NY8 - Grissom Solar | MN8 Energy LLC | Mohawk, NY | 36 GWh | Feb 2023 | Dec 2025 | Solar |
| RIC - Hanover (CSG) | MN8 Energy LLC | Silver Creek, NY | 8 GWh | Jul 2023 | Dec 2025 | Solar |
| Town of Williamson Landfill PV | MN8 Energy LLC | Williamson, NY | 1 GWh | Nov 2014 | May 2026 | Solar |
| Chambers 3 - Erie County Alden | MN8 Energy LLC | Alden, NY | 3 GWh | Apr 2018 | Dec 2025 | Solar |
| Kenmare - Sullivan Community College | MN8 Energy LLC | Sheldrake, NY | 2 GWh | Jun 2015 | Dec 2025 | Solar |
| Summit - Scriba CSG | MN8 Energy LLC | Scriba, NY | 6 GWh | Aug 2023 | Dec 2025 | Solar |
| Summit - Oswego | MN8 Energy LLC | Oswego, NY | 4 GWh | May 2023 | Dec 2025 | Solar |
| NY8 - Darby Solar | MN8 Energy LLC | Schaghticoke, NY | 32 GWh | May 2023 | Dec 2025 | Solar |
| NY8 - Teichos Pattersonville | MN8 Energy LLC | Pattersonville, NY | 37 GWh | Jan 2024 | Dec 2025 | Solar |
| NY8 - ELP Stillwater Solar | MN8 Energy LLC | Mechanicville, NY | 33 GWh | Oct 2023 | Dec 2025 | Solar |
| Summit - Lysander (CSG) | MN8 Energy LLC | Lysander, NY | 6 GWh | Jul 2023 | Dec 2025 | Solar |
| Summit - Cicero | MN8 Energy LLC | Brewerton, NY | 8 GWh | Jan 2024 | Dec 2025 | Solar |
| MM Albany Energy | MM Albany Energy LLC | Albany, NY | 7 GWh | Feb 1998 | Dec 2025 | Landfill Gas |
| Minisink CSG | Minisink Solar LLC | Westtown, NY | 2 GWh | Jun 2021 | Dec 2025 | Solar |
| Minisink Community Solar 2 LLC | Minisink Solar 2 LLC | Minisink, NY | 3 GWh | Oct 2018 | Dec 2025 | Solar |
| Minisink Solar 1 LLC | Minisink Solar 1 LLC | Minisink, NY | 3 GWh | Sep 2018 | Dec 2025 | Solar |
| Middletown NY 1 | Middletown NY 1, LLC | Middletown, NY | 3 GWh | Feb 2020 | Dec 2025 | Solar |
| Medusa NY 1 | Medusa NY 1, LLC | Medusa, NY | 2 GWh | May 2020 | Dec 2025 | Solar |
| Enfield Community Solar | Mecklenburg Solar, LLC | Ithaca, NY | 2 GWh | Nov 2017 | Dec 2025 | Solar |
| McCormick NY CSG LLC | McCormick NY CSG LLC | Andover, NY | 4 GWh | Apr 2025 | Dec 2025 | Solar |
| Marble River Wind Farm | Marble River, LLC | Churubusco, NY | 471 GWh | Oct 2012 | May 2026 | Wind |
| Mantisi | Mantisi Solar LLC | Brockport, NY | 9 GWh | Feb 2024 | Dec 2025 | Solar |
| Maimonides Medical Center | Maimonides Medical Center | Brooklyn, NY | 15 MWh | Dec 1989 | Dec 2025 | Distillate Fuel Oil |
| Magruder Solar Community Solar | Magruder Solar, LLC | Shawangunk, NY | 335 MWh | Nov 2025 | Dec 2025 | Solar |
| Madison Windpower LLC | Madison Windpower LLC | Madison, NY | 543 MWh | Sep 2000 | Sep 2025 | Wind |
| Kings Park Solar II | Madison Energy Investments LLC | Kings Park, NY | 3 GWh | Jan 2019 | Dec 2025 | Solar |
| GE 19th Hole | Madison Energy Investments LLC | Johnstown, NY | 11 GWh | Dec 2017 | Sep 2025 | Solar |
| Franklin Solar Site | Madison Energy Investments LLC | Malone, NY | 2 GWh | Nov 2018 | Sep 2025 | Solar |
| Malone Solar Site | Madison Energy Investments LLC | Malone, NY | 1 GWh | Nov 2018 | Sep 2025 | Solar |
| Ulster County Solar | Madison Energy Investments LLC | Kingston, NY | 1 GWh | Apr 2018 | Sep 2025 | Solar |
| Kings Park Solar I | Madison Energy Investments LLC | Kings Park, NY | 2 GWh | Jan 2019 | Dec 2025 | Solar |
| Goldman Sachs Carports Solar | Madison Energy Investments LLC | Cohoes, NY | 1 GWh | Nov 2020 | Dec 2025 | Solar |
| Oneida - South | Madison Energy Investments LLC | Whitestown, NY | 2 GWh | Nov 2015 | 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 |
| #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 |