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	Jun 2026
Annual Generation	134.9 TWh
Power Plants	1,211
Utilities	601
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 \| 54.7% Nuclear \| 19.6% Water \| 17.7% Wind \| 4.9% Other Fuel \| 2.8%

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Daily Net Generation for New York Independent System Operator for the past 3 Years

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Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
Huntington Resource Recovery Facility	Huntington Resource Recovery	East Northport, NY	197 GWh	Nov 1991	Mar 2026	Non-biogenic Municipal Solid Waste : 54.8% Biogenic Municipal Solid Waste : 44.8%
Astoria Energy II	Astoria Energy II LLC	Astoria, NY	2 TWh	Jun 2011	Mar 2026	Natural Gas : 93.8% Distillate Fuel Oil : 6.2%
High River Energy Center, LLC	High River Energy Center, LLC	Florida, NY	149 GWh	Jul 2024	Mar 2026	Solar
Baron Winds Farm	Big Sky Wind, LLC	Cohocton, NY	316 GWh	Jan 2023	Mar 2026	Wind
Arthur Kill Generating Station	NRG Arthur Kill Operations Inc	Staten Island, NY	2 TWh	Aug 1959	Mar 2026	Natural Gas
East River	Consolidated Edison Co-NY Inc	New York, NY	3 TWh	Oct 1951	Mar 2026	Natural Gas
Linden Cogen Plant	EFS Cogen Holdings I LLC	Linden, NJ	6 TWh	Feb 1992	Mar 2026	Natural Gas : 99.8%
Ravenswood	Ravenswood Operations LLC	Long Island, NY	3 TWh	Jan 1963	Mar 2026	Natural Gas : 84.6% Distillate Fuel Oil : 15.4%
Lederle Laboratories	Veolia NA - Municipal & Commercial Business	Pearl River, NY	145 GWh	Jun 1990	Mar 2026	Natural Gas : 99.1% Distillate Fuel Oil : 0.9%
E F Barrett	National Grid Generation LLC	Island Park, NY	1 TWh	Oct 1956	Mar 2026	Natural Gas : 95.9% Residual Fuel Oil : 3.6%
James A Fitzpatrick	Constellation Nuclear	Lycoming, NY	7 TWh	Jul 1976	Mar 2026	Nuclear
Town of Williamson Landfill PV	MN8 Energy LLC	Williamson, NY	1 GWh	Nov 2014	Mar 2026	Solar
Northport	National Grid Generation LLC	Northport, NY	5 TWh	Feb 1967	Mar 2026	Natural Gas : 89.0% Residual Fuel Oil : 11.0%
Port Jefferson	National Grid Generation LLC	Port Jefferson, NY	394 GWh	Oct 1958	Mar 2026	Natural Gas : 80.7% Residual Fuel Oil : 18.0% Distillate Fuel Oil : 1.3%
Morris Ridge Solar	Morris Ridge Solar Energy Center, LLC	Mount Morris, NY	304 GWh	Oct 2024	Mar 2026	Solar
Cassadaga Wind Farm	Big Sky Wind, LLC	Cherry Creek, NY	256 GWh	Jun 2021	Mar 2026	Wind
MacArthur Waste to Energy Facility	Reworld MacArthur Renewable Energy	Ronkonkoma, NY	52 GWh	Feb 1990	Mar 2026	Non-biogenic Municipal Solid Waste : 54.5% Biogenic Municipal Solid Waste : 44.6% Natural Gas : 0.9%
Bethlehem Energy Center	GB II New York LLC	Glenmont, NY	3 TWh	Jun 2005	Mar 2026	Natural Gas
Onondaga County Resource Recovery	Covanta Onondega LP	Jamesville, NY	174 GWh	Oct 1994	Mar 2026	Non-biogenic Municipal Solid Waste : 53.6% Biogenic Municipal Solid Waste : 43.9% Natural Gas : 2.5%
Wheelabrator Hudson Falls	Wheelabrator Environmental Systems	Hudson Falls, NY	53 GWh	Oct 1991	Mar 2026	Non-biogenic Municipal Solid Waste : 50.8% Biogenic Municipal Solid Waste : 41.6% Natural Gas : 7.6%
Astoria Energy	Astoria Energy LLC	New York, NY	4 TWh	Apr 2006	Mar 2026	Natural Gas : 95.4% Distillate Fuel Oil : 4.6%
Marble River Wind Farm	Marble River, LLC	Churubusco, NY	459 GWh	Oct 2012	Mar 2026	Wind
Empire Generating Co LLC	Empire Generating Co LLC	Rensselaer, NY	3 TWh	Aug 2010	Mar 2026	Natural Gas : 97.2% Distillate Fuel Oil : 2.8%
Brooklyn Navy Yard Cogeneration	Brooklyn Navy Yard Cogen PLP	Brooklyn, NY	2 TWh	Feb 1996	Mar 2026	Natural Gas : 97.5% Distillate Fuel Oil : 2.5%
Covanta Hempstead	Covanta Hempstead Company	Westbury, NY	566 GWh	Mar 1989	Mar 2026	Non-biogenic Municipal Solid Waste : 54.8% Biogenic Municipal Solid Waste : 44.9%
Arkwright Summit Wind Farm LLC	Arkwright Summit Wind Farm LLC	Fredonia, NY	243 GWh	Jul 2018	Mar 2026	Wind
Tannery Road Landfill	Tannery Road Solar, LLC	Rome, NY	3 GWh	Jul 2016	Mar 2026	Solar
Henkel U.S. Operations Corporation	Henkel U.S. Operations Corporation	Geneva, NY	1 GWh	Dec 2011	Mar 2026	Wind
East Point Energy Center	East Point Energy Center, LLC	Sharon Springs, NY	98 GWh	Apr 2024	Mar 2026	Solar
South Fork Wind	Orsted Wind Power North America LLC	East Hampton, NY	512 GWh	Jun 2024	Mar 2026	Wind
Jericho Rise Wind Farm LLC	Jericho Rise Wind Farm LLC	Chateaugay, NY	166 GWh	Nov 2016	Mar 2026	Wind
Cornell Hydro	Cornell Hydro	Ithaca, NY	2 GWh	Nov 1981	Mar 2026	Water
Robert Moses Niagara	New York Power Authority	Lewiston, NY	14 TWh	Dec 1960	Mar 2026	Water
Nine Mile Point Nuclear Station	Constellation Nuclear	Lycoming, NY	16 TWh	Nov 1969	Mar 2026	Nuclear
Reworld Babylon Inc	Reworld Babylon Inc	West Babylon, NY	120 GWh	Dec 1988	Mar 2026	Non-biogenic Municipal Solid Waste : 54.5% Biogenic Municipal Solid Waste : 44.6% Distillate Fuel Oil : 0.8%
Ticonderoga Mill	Sylvamo North America LLC	Ticonderoga, NY	209 GWh	Dec 1969	Mar 2026	Natural Gas : 55.1% Black Liquor : 36.6% Residual Fuel Oil : 5.1% Wood/Wood Waste Solids : 3.2%
Wheelabrator Westchester	Wheelabrator Environmental Systems	Peekskill, NY	393 GWh	Sep 1984	Mar 2026	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Reworld Niagara I	Reworld Niagara I, LLC	Niagara Falls, NY	118 GWh	Jul 1980	Mar 2026	Non-biogenic Municipal Solid Waste : 48.8% Biogenic Municipal Solid Waste : 39.9% Natural Gas : 11.2%
RED-Rochester, LLC	RED-Rochester, LLC	Rochester, NY	347 GWh	Jul 1954	Mar 2026	Natural Gas
Athens Generating Plant	New Athens Generating Company LLC	Athens, NY	3 TWh	Mar 2003	Mar 2026	Natural Gas
Seneca Energy	Seneca Energy II	Seneca Falls, NY	39 GWh	Feb 1996	Mar 2026	Landfill Gas
Caithness Long Island Energy Center	Caithness Long Island, LLC	Yaphank, NY	2 TWh	Jul 2009	Mar 2026	Natural Gas
CPV Valley Energy Center	CPV Valley, LLC	Wawayanda, NY	5 TWh	Apr 2018	Mar 2026	Natural Gas
Maple Ridge Wind Farm	Flat Rock Windpower, LLC	Lowville, NY	608 GWh	Nov 2005	Mar 2026	Wind
Sithe Independence Station	Sithe/Independence LLC	Oswego, NY	6 TWh	Jul 1994	Mar 2026	Natural Gas
Roseton Generating Facility	CCI Roseton LLC	Newsburgh, NY	760 GWh	Aug 1974	Mar 2026	Natural Gas : 74.5% Residual Fuel Oil : 25.5%
Copenhagen Wind Farm	EDF Renewable Asset Holdings, Inc.	Copenhagen, NY	246 GWh	Nov 2018	Mar 2026	Wind
Long Island Solar Farm LLC	Long Island Solar Farm LLC	Upton, NY	39 GWh	Nov 2011	Mar 2026	Solar
Shoreham Solar Commons	Duke Energy Renewables Services	Shoreham, NY	43 GWh	Jun 2018	Mar 2026	Solar
Ball Hill Wind Energy, LLC	Ball Hill Wind Energy, LLC	Forestville, NY	276 GWh	Nov 2023	Mar 2026	Wind
Roaring Brook, LLC	Avangrid Power LLC	Lowville, NY	189 GWh	Sep 2021	Mar 2026	Wind
Steel Sun	CleanCapital Holdings	Lackawanna, NY	4 GWh	Nov 2016	Mar 2026	Solar
Cricket Valley Energy	Cricket Valley Energy Center LLC	Dover, NY	6 TWh	Mar 2020	Mar 2026	Natural Gas
Eight Point Wind	Eight Point Wind, LLC	Rexville, NY	257 GWh	Jan 2023	Mar 2026	Wind
Number Three Wind Project	Invenergy Services LLC	Lowville, NY	275 GWh	Apr 2023	Mar 2026	Wind
Bowline Point	Bowline, LLC	West Haverstraw, NY	2 TWh	Aug 1972	Mar 2026	Natural Gas : 96.9% Residual Fuel Oil : 3.1%
R E Ginna Nuclear Power Plant	Constellation Nuclear	Ontario, NY	5 TWh	Jun 1970	Mar 2026	Nuclear
Bluestone Wind, LLC	Bluestone Wind, LLC	Sanford, NY	317 GWh	Sep 2023	Mar 2026	Wind
Robert Moses Power Dam	New York Power Authority	Massena, NY	7 TWh	Jun 1958	Mar 2026	Water
Bayonne Energy Center	Bayonne Energy Center LLC	Bayonne, NJ	1 TWh	May 2012	Mar 2026	Natural Gas : 97.3% Distillate Fuel Oil : 2.7%
Oswego Harbor Power	Oswego Harbor Power	Oswego, NY	131 GWh	May 1975	Feb 2026	Residual Fuel Oil : 98.0% Natural Gas : 2.0%
Zeltmann	New York Power Authority	Astoria, NY	3 TWh	Nov 2005	Nov 2025	Natural Gas : 98.1% Distillate Fuel Oil : 1.9%
Madison Windpower LLC	Madison Windpower LLC	Madison, NY	543 MWh	Sep 2000	Sep 2025	Wind
Upper Mechanicville	New York State Elec & Gas Corp	Town of Stillwater, NY	79 GWh	Aug 1983	Dec 2024	Water
Dashville	Central Hudson Gas & Elec Corp	Dashville, NY	9 GWh	Dec 1919	Dec 2024	Water
Sturgeon	Central Hudson Gas & Elec Corp	Tillson, NY	46 GWh	Dec 1923	Dec 2024	Water
Narrows Gas Turbines Generating	U S Power Generating Company LLC	Brooklyn, NY	40 GWh	Apr 1972	Dec 2024	Natural Gas : 96.7% Distillate Fuel Oil : 3.3%
59th Street	Consolidated Edison Co-NY Inc	New York, NY	477 MWh	May 1969	Dec 2024	Natural Gas
Shoreham	National Grid Generation LLC	Wading River, NY	353 MWh	Mar 1966	Dec 2024	Distillate Fuel Oil
Greenidge Generation LLC	Greenidge Generation Holdings LLC	Dresden, NY	674 GWh	Nov 1953	Dec 2024	Natural Gas
Harris Lake	New York State Elec & Gas Corp	Town of Newcomb, NY	1 MWh	Aug 1967	Dec 2024	Distillate Fuel Oil
Allens Falls	Erie Boulevard Hydropower LP	Parishville, NY	29 GWh	Dec 1926	Dec 2024	Water
Beardslee	Erie Boulevard Hydropower LP	Little Falls, NY	51 GWh	Dec 1923	Dec 2024	Water
Belfort	Erie Boulevard Hydropower LP	Croghan, NY	10 GWh	Dec 1902	Dec 2024	Water
Bennetts Bridge	Erie Boulevard Hydropower LP	Altmar, NY	76 GWh	Dec 1931	Dec 2024	Water
Black River	Erie Boulevard Hydropower LP	Black River, NY	27 GWh	Dec 1919	Dec 2024	Water
Five Falls	Erie Boulevard Hydropower LP	Colton, NY	107 GWh	Dec 1954	Dec 2024	Water
Flat Rock	Erie Boulevard Hydropower LP	Fine, NY	19 GWh	Dec 1923	Dec 2024	Water
Granby	Erie Boulevard Hydropower LP	Fulton, NY	36 GWh	Dec 1982	Dec 2024	Water
Hannawa	Erie Boulevard Hydropower LP	Pierrepont, NY	53 GWh	Dec 1913	Dec 2024	Water
Herrings	Erie Boulevard Hydropower LP	Carthage, NY	23 GWh	Dec 1923	Dec 2024	Water
Heuvelton	Erie Boulevard Hydropower LP	Village of Heuvelton, NY	5 GWh	Dec 1923	Dec 2024	Water
High Dam	Oswego City of	Oswego, NY	26 GWh	Jul 1928	Dec 2024	Water
High Falls - Croghan NY	Erie Boulevard Hydropower LP	Croghan, NY	29 GWh	Dec 1924	Dec 2024	Water
Higley	Erie Boulevard Hydropower LP	Colton, NY	37 GWh	Aug 2003	Dec 2024	Water
Inghams	Erie Boulevard Hydropower LP	Little Falls, NY	27 GWh	Dec 1911	Dec 2024	Water
Johnsonville Dam	Erie Boulevard Hydropower LP	Johnsonville, NY	8 GWh	Dec 1908	Dec 2024	Water
Kamargo	Erie Boulevard Hydropower LP	Black River, NY	27 GWh	Dec 1920	Dec 2024	Water
Lighthouse Hill	Erie Boulevard Hydropower LP	Altmar, NY	19 GWh	Dec 1929	Dec 2024	Water
Macomb	Erie Boulevard Hydropower LP	Malone, NY	8 GWh	Dec 1939	Dec 2024	Water
Minetto	Erie Boulevard Hydropower LP	Minetto, NY	33 GWh	Dec 1914	Dec 2024	Water
Moshier	Erie Boulevard Hydropower LP	Lowville, NY	38 GWh	Dec 1928	Dec 2024	Water
Waterport	Erie Boulevard Hydropower LP	Waterport, NY	12 GWh	Dec 1920	Dec 2024	Water
Yaleville	Erie Boulevard Hydropower LP	Norfolk, NY	4 GWh	Dec 1939	Dec 2024	Water
Grahamsville	New York Power Authority	Grahamsville, NY	82 GWh	Dec 1955	Dec 2024	Water
Burns Road Solar	Pivot Energy	Angola, NY	3 GWh	Feb 2024	Dec 2024	Solar
Swinging Bridge 2	Eagle Creek Renewable Energy, LLC	Forestburgh, NY	16 GWh	Jul 1939	Dec 2024	Water
Plant No 1 Freeport	Village of Freeport - (NY)	Freeport, NY	17 MWh	Dec 1940	Dec 2024	Distillate Fuel Oil
Plant No 2 Freeport	Village of Freeport - (NY)	Freeport, NY	31 GWh	Apr 1973	Dec 2024	Natural Gas : 99.7%
Greenport	Village of Greenport - (NY)	Greenport, NY	15 MWh	May 1957	Dec 2024	Distillate Fuel Oil

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	522.6 GWh	4
#25	Dominion Energy South Carolina, Inc.	24.9 TWh	87
#13	Duke Energy Carolinas	112.2 TWh	565
#17	Duke Energy Progress East	64.7 TWh	559
#51	Duke Energy Progress West	4.6 TWh	10
#15	ISO New England	111.3 TWh	1,577
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.1 TWh	25
#1	PJM Interconnection, LLC	873.9 TWh	2,465
#31	South Carolina Public Service Authority	18.5 TWh	34
#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	252.5 TWh	417
#7	California Independent System Operator	173.0 TWh	2,075
#9	Tennessee Valley Authority	163.7 TWh	204
#10	Florida Power & Light Co.	151.0 TWh	187
#12	New York Independent System Operator	134.9 TWh	1,211
#13	Duke Energy Carolinas	112.2 TWh	565
#15	ISO New England	111.3 TWh	1,577
#16	Bonneville Power Administration	90.2 TWh	163
#17	Duke Energy Progress East	64.7 TWh	559
#18	PacifiCorp East	61.1 TWh	216