New York Independent System Operator

Balancing Authority Summary Information

New York Independent System Operator is ranked #12 out of 65 balancing authorities in terms of total annual electricity generation.

Balancing Authority	New York Independent System Operator
States	New Jersey New York
Last Update	Mar 2026
Annual Generation	134.0 TWh
Power Plants	1,211
Utilities	601
Ranked #12 out of 65 in terms of net annual generation
Ranked #10 out of 54 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 53.7% Nuclear \| 21% Water \| 17.9% Wind \| 5.1% Other Fuel \| 2.2%

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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
Nine Mile Point Nuclear Station	Constellation Nuclear	Lycoming, NY	16 TWh	Nov 1969	Dec 2025	Nuclear
Robert Moses Niagara	New York Power Authority	Lewiston, NY	14 TWh	Dec 1960	Dec 2025	Water
James A Fitzpatrick	Constellation Nuclear	Lycoming, NY	7 TWh	Jul 1976	Dec 2025	Nuclear
Robert Moses Power Dam	New York Power Authority	Massena, NY	7 TWh	Jun 1958	Dec 2025	Water
Sithe Independence Station	Sithe/Independence LLC	Oswego, NY	6 TWh	Jul 1994	Dec 2025	Natural Gas
Linden Cogen Plant	EFS Cogen Holdings I LLC	Linden, NJ	6 TWh	Feb 1992	Dec 2025	Natural Gas : 98.4% Other Gas : 1.1%
R E Ginna Nuclear Power Plant	Constellation Nuclear	Ontario, NY	5 TWh	Jun 1970	Dec 2025	Nuclear
Cricket Valley Energy	Cricket Valley Energy Center LLC	Dover, NY	5 TWh	Mar 2020	Dec 2025	Natural Gas
CPV Valley Energy Center	CPV Valley, LLC	Wawayanda, NY	5 TWh	Apr 2018	Dec 2025	Natural Gas
Northport	National Grid Generation LLC	Northport, NY	4 TWh	Feb 1967	Dec 2025	Natural Gas : 91.3% Residual Fuel Oil : 8.7%
Astoria Energy	Astoria Energy LLC	New York, NY	4 TWh	Apr 2006	Dec 2025	Natural Gas : 98.1% Distillate Fuel Oil : 1.9%
Bethlehem Energy Center	GB II New York LLC	Glenmont, NY	3 TWh	Jun 2005	Dec 2025	Natural Gas
Empire Generating Co LLC	Empire Generating Co LLC	Rensselaer, NY	3 TWh	Aug 2010	Dec 2025	Natural Gas : 98.6% Distillate Fuel Oil : 1.4%
Zeltmann	New York Power Authority	Astoria, NY	3 TWh	Nov 2005	Nov 2025	Natural Gas : 98.1% Distillate Fuel Oil : 1.9%
Ravenswood	Ravenswood Operations LLC	Long Island, NY	3 TWh	Jan 1963	Dec 2025	Natural Gas : 98.0% Distillate Fuel Oil : 2.0%
Athens Generating Plant	New Athens Generating Company LLC	Athens, NY	3 TWh	Mar 2003	Dec 2025	Natural Gas
East River	Consolidated Edison Co-NY Inc	New York, NY	3 TWh	Oct 1951	Dec 2025	Natural Gas
Caithness Long Island Energy Center	Caithness Long Island, LLC	Yaphank, NY	2 TWh	Jul 2009	Dec 2025	Natural Gas
Astoria Energy II	Astoria Energy II LLC	Astoria, NY	2 TWh	Jun 2011	Dec 2025	Natural Gas : 95.6% Distillate Fuel Oil : 4.4%
Arthur Kill Generating Station	NRG Arthur Kill Operations Inc	Staten Island, NY	2 TWh	Aug 1959	Dec 2025	Natural Gas
Bowline Point	Bowline, LLC	West Haverstraw, NY	2 TWh	Aug 1972	Dec 2025	Natural Gas : 98.4% Residual Fuel Oil : 1.6%
Brooklyn Navy Yard Cogeneration	Brooklyn Navy Yard Cogen PLP	Brooklyn, NY	2 TWh	Feb 1996	Dec 2025	Natural Gas : 97.9% Distillate Fuel Oil : 2.1%
E F Barrett	National Grid Generation LLC	Island Park, NY	1 TWh	Oct 1956	Dec 2025	Natural Gas : 97.8% Residual Fuel Oil : 1.8%
Bayonne Energy Center	Bayonne Energy Center LLC	Bayonne, NJ	932 GWh	May 2012	Dec 2025	Natural Gas
Astoria Generating Station	U S Power Generating Company LLC	Astoria, NY	871 GWh	Feb 1954	Dec 2024	Natural Gas : 99.9%
Maple Ridge Wind Farm	Flat Rock Windpower, LLC	Lowville, NY	698 GWh	Nov 2005	Dec 2025	Wind
Roseton Generating Facility	CCI Roseton LLC	Newsburgh, NY	676 GWh	Aug 1974	Dec 2025	Natural Gas : 81.5% Residual Fuel Oil : 18.5%
Greenidge Generation LLC	Greenidge Generation Holdings LLC	Dresden, NY	674 GWh	Nov 1953	Dec 2024	Natural Gas
Covanta Hempstead	Covanta Hempstead Company	Westbury, NY	587 GWh	Mar 1989	Dec 2025	Non-biogenic Municipal Solid Waste : 54.9% Biogenic Municipal Solid Waste : 44.9%
Bethpage Power Plant	Calpine Eastern Corp	Hicksville, NY	573 GWh	Jul 1989	Dec 2024	Natural Gas
South Fork Wind	Orsted Wind Power North America LLC	East Hampton, NY	536 GWh	Jun 2024	Dec 2025	Wind
Marble River Wind Farm	Marble River, LLC	Churubusco, NY	495 GWh	Oct 2012	Dec 2025	Wind
Richard M Flynn	New York Power Authority	Holtsville, NY	469 GWh	Apr 1994	Dec 2024	Natural Gas : 99.9%
Indeck Corinth Energy Center	Indeck-Corinth Ltd Partnership	Corinth, NY	422 GWh	Jan 1995	Dec 2024	Natural Gas
Kennedy International Airport Cogen	KIAC Partners	Jamaica, NY	399 GWh	Nov 1994	Dec 2024	Natural Gas
Wheelabrator Westchester	Wheelabrator Environmental Systems	Peekskill, NY	383 GWh	Sep 1984	Dec 2025	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Saranac Facility	Saranac Power Partners LP	Plattsburgh, NY	355 GWh	May 1994	Dec 2024	Natural Gas
RED-Rochester, LLC	RED-Rochester, LLC	Rochester, NY	345 GWh	Jul 1954	Dec 2025	Natural Gas
Baron Winds Farm	Big Sky Wind, LLC	Cohocton, NY	340 GWh	Jan 2023	Dec 2025	Wind
Port Jefferson	National Grid Generation LLC	Port Jefferson, NY	338 GWh	Oct 1958	Dec 2025	Natural Gas : 91.0% Residual Fuel Oil : 7.9% Distillate Fuel Oil : 1.1%
Bluestone Wind, LLC	Bluestone Wind, LLC	Sanford, NY	331 GWh	Sep 2023	Dec 2025	Wind
Curtis Palmer Hydroelectric	Palmer Hydroelectric	Corinth, NY	326 GWh	Sep 1985	Dec 2024	Water
Morris Ridge Solar	Morris Ridge Solar Energy Center, LLC	Mount Morris, NY	313 GWh	Oct 2024	Dec 2025	Solar
Stony Brook Cogen Plant	Nissequoque Cogen Partners	Stony Brook, NY	309 GWh	Mar 1995	Dec 2024	Natural Gas
World Generation X	North American Energy Services	North Tonawanda, NY	308 GWh	Jun 1993	Sep 2024	Natural Gas
Ball Hill Wind Energy, LLC	Ball Hill Wind Energy, LLC	Forestville, NY	299 GWh	Nov 2023	Dec 2025	Wind
Number Three Wind Project	Invenergy Services LLC	Lowville, NY	295 GWh	Apr 2023	Dec 2025	Wind
Eight Point Wind	Eight Point Wind, LLC	Rexville, NY	267 GWh	Jan 2023	Dec 2025	Wind
Copenhagen Wind Farm	EDF Renewable Asset Holdings, Inc.	Copenhagen, NY	264 GWh	Nov 2018	Dec 2025	Wind
Arkwright Summit Wind Farm LLC	Arkwright Summit Wind Farm LLC	Fredonia, NY	262 GWh	Jul 2018	Dec 2025	Wind
Cassadaga Wind Farm	Big Sky Wind, LLC	Cherry Creek, NY	257 GWh	Jun 2021	Dec 2025	Wind
Spier Falls	Erie Boulevard Hydropower LP	Gansevoort, NY	249 GWh	Dec 1923	Sep 2024	Water
Stony Creek Wind Farm NY	Invenergy Services LLC	Strykersville, NY	233 GWh	Oct 2013	Dec 2024	Wind
Cornell University Central Heat	Cornell University	Ithaca, NY	222 GWh	Jun 1988	Dec 2024	Natural Gas : 99.9%
Wethersfield	Valcour Operating Services, LLC	Gainsville, NY	219 GWh	Mar 2009	Dec 2024	Wind
Hudson Falls Hydroelectric Project	Boralex Hydro Operations Inc	South Glens Falls, NY	210 GWh	Oct 1995	Dec 2024	Water
Roaring Brook, LLC	Avangrid Power LLC	Lowville, NY	208 GWh	Sep 2021	Dec 2025	Wind
Ticonderoga Mill	Sylvamo North America LLC	Ticonderoga, NY	207 GWh	Dec 1969	Dec 2025	Natural Gas : 56.9% Black Liquor : 35.8% Residual Fuel Oil : 4.4% Wood/Wood Waste Solids : 3.0%
Jericho Rise Wind Farm LLC	Jericho Rise Wind Farm LLC	Chateaugay, NY	206 GWh	Nov 2016	Dec 2025	Wind
Cohocton Wind Project	Evergreen Wind, LLC	Cohocton, NY	204 GWh	Dec 2008	Dec 2024	Wind
High Sheldon Wind Farm	Invenergy Services LLC	Strykersville, NY	201 GWh	Jan 2009	Dec 2024	Wind
Huntington Resource Recovery Facility	Huntington Resource Recovery	East Northport, NY	198 GWh	Nov 1991	Dec 2025	Non-biogenic Municipal Solid Waste : 54.8% Biogenic Municipal Solid Waste : 44.9%
Colton	Erie Boulevard Hydropower LP	Pierrepont, NY	195 GWh	Dec 1917	Dec 2024	Water
Onondaga County Resource Recovery	Covanta Onondega LP	Jamesville, NY	184 GWh	Oct 1994	Dec 2025	Non-biogenic Municipal Solid Waste : 53.9% Biogenic Municipal Solid Waste : 44.1% Natural Gas : 2.0%
Sherman Island	Erie Boulevard Hydropower LP	Queensbury, NY	175 GWh	Dec 1922	Dec 2024	Water
Bliss (NY)	Valcour Operating Services, LLC	Bliss, NY	171 GWh	Apr 2008	Dec 2024	Wind
Chateaugay	Valcour Operating Services, LLC	Chateaugay, NY	170 GWh	Mar 2009	Dec 2024	Wind
Carr Street Generating Station	Carr Street Generating Sta LP	East Syracuse, NY	169 GWh	Jun 1993	Dec 2024	Natural Gas
Hardscrabble Wind Power LLC	Avangrid Power LLC	Little Falls, NY	164 GWh	Dec 2010	Dec 2024	Wind
School Street	Erie Boulevard Hydropower LP	Cohoes, NY	159 GWh	Dec 1914	Dec 2024	Water
Altona	Valcour Operating Services, LLC	Altona, NY	158 GWh	Mar 2009	Dec 2024	Wind
High River Energy Center, LLC	High River Energy Center, LLC	Florida, NY	156 GWh	Jul 2024	Dec 2025	Solar
Lederle Laboratories	Veolia NA - Municipal & Commercial Business	Pearl River, NY	149 GWh	Jun 1990	Dec 2025	Natural Gas : 99.5%
Clinton	Valcour Operating Services, LLC	Churubusco, NY	149 GWh	Apr 2008	Dec 2024	Wind
Ellenburg	Valcour Operating Services, LLC	Churubusco, NY	143 GWh	Apr 2008	Dec 2024	Wind
Glen Park Hydroelectric Project	Eagle Creek Renewable Energy, LLC	Watertown, NY	142 GWh	Sep 1999	Dec 2024	Water
Trenton Falls	Erie Boulevard Hydropower LP	Barneveld, NY	141 GWh	Dec 1918	Dec 2024	Water
Stewarts Bridge	Erie Boulevard Hydropower LP	Corinth, NY	133 GWh	Dec 1951	Dec 2024	Water
Lockport Energy Associates LP	Lockport Energy Associates LP	Lockport, NY	132 GWh	Jun 1992	Jan 2024	Natural Gas
Riverbay	Riverbay Corp	New York, NY	130 GWh	Feb 2011	Dec 2024	Natural Gas : 99.1% Distillate Fuel Oil : 0.9%
Glenwood Landing	National Grid Generation LLC	Glenwood Landing, NY	129 GWh	Mar 1967	Dec 2024	Natural Gas : 84.2% Distillate Fuel Oil : 15.8%
Finch Paper	Finch Paper LLC	Glen Falls, NY	124 GWh	May 1987	Dec 2024	Wood Waste Liquids, excluding Black Liquor : 47.1% Natural Gas : 39.5% Wood/Wood Waste Solids : 13.4%
Reworld Babylon Inc	Reworld Babylon Inc	West Babylon, NY	124 GWh	Dec 1988	Dec 2025	Non-biogenic Municipal Solid Waste : 54.6% Biogenic Municipal Solid Waste : 44.7% Distillate Fuel Oil : 0.7%
Vernon Boulevard	New York Power Authority	Long Island City, NY	117 GWh	Jul 2001	Dec 2024	Natural Gas
Reworld Niagara I	Reworld Niagara I, LLC	Niagara Falls, NY	114 GWh	Jul 1980	Dec 2025	Non-biogenic Municipal Solid Waste : 49.5% Biogenic Municipal Solid Waste : 40.5% Natural Gas : 10.1%
Harlem River Yard	New York Power Authority	Bronx, NY	110 GWh	Jun 2001	Dec 2024	Natural Gas
Howard Wind Farm	Howard Wind LLC (Longroad)	Hornell, NY	109 GWh	Nov 2011	Dec 2024	Wind
Rainbow Falls Hydro	Erie Boulevard Hydropower LP	Parishville, NY	109 GWh	Dec 1955	Dec 2024	Water
Five Falls	Erie Boulevard Hydropower LP	Colton, NY	107 GWh	Dec 1954	Dec 2024	Water
Hell Gate	New York Power Authority	Bronx, NY	105 GWh	Jun 2001	Dec 2024	Natural Gas
Joseph J Seymour Power Project	New York Power Authority	Brooklyn, NY	104 GWh	Jun 2001	Nov 2024	Natural Gas
Stark	Erie Boulevard Hydropower LP	Colton, NY	103 GWh	Dec 1956	Dec 2024	Water
East Point Energy Center	East Point Energy Center, LLC	Sharon Springs, NY	97 GWh	Apr 2024	Dec 2025	Solar
Selkirk Cogen	Selkirk Cogen Partners LP	Selkirk, NY	92 GWh	Mar 1992	Sep 2024	Natural Gas
South Colton	Erie Boulevard Hydropower LP	Colton, NY	90 GWh	Dec 1953	Dec 2024	Water
High Falls - Saranac NY	New York State Elec & Gas Corp	Town of Saranac, NY	88 GWh	Jul 1948	Sep 2024	Water
Dutch Hill Wind Project	Evergreen Wind, LLC	Cohocton, NY	87 GWh	Dec 2008	Dec 2024	Wind
Castleton Energy Center	Fortistar Castleton Power	Castleton, NY	87 GWh	Jan 1992	Dec 2024	Natural Gas : 99.8%
Oswego Harbor Power	Oswego Harbor Power	Oswego, NY	85 GWh	May 1975	Dec 2025	Residual Fuel Oil : 99.1% Natural Gas : 0.9%
Grahamsville	New York Power Authority	Grahamsville, NY	82 GWh	Dec 1955	Dec 2024	Water

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#60	Alcoa Power Generating, Inc. - Yadkin Division	610.0 GWh	4
#25	Dominion Energy South Carolina, Inc.	25.6 TWh	87
#13	Duke Energy Carolinas	112.4 TWh	565
#17	Duke Energy Progress East	64.5 TWh	559
#52	Duke Energy Progress West	4.3 TWh	10
#15	ISO New England	110.5 TWh	1,577
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.3 TWh	25
#1	PJM Interconnection, LLC	879.0 TWh	2,465
#29	South Carolina Public Service Authority	18.4 TWh	34
#59	Southeastern Power Administration	1.4 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#7	California Independent System Operator	179.9 TWh	2,075
#9	Tennessee Valley Authority	162.4 TWh	204
#10	Florida Power & Light Co.	150.5 TWh	187
#12	New York Independent System Operator	134.0 TWh	1,211
#13	Duke Energy Carolinas	112.4 TWh	565
#15	ISO New England	110.5 TWh	1,577
#16	Bonneville Power Administration	85.9 TWh	163
#17	Duke Energy Progress East	64.5 TWh	559
#18	PacifiCorp East	60.9 TWh	216