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	May 2025
Annual Generation	130.6 TWh
Power Plants	1,100
Utilities	542
Ranked #12 out of 65 in terms of net annual generation
Ranked #10 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 52.3% Nuclear \| 19.8% Water \| 19.4% Wind \| 5.3% Other Fuel \| 3%

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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
Nine Mile Point Nuclear Station	Constellation Nuclear	Lycoming, NY	16 TWh	Nov 1969	Mar 2025	Nuclear
Robert Moses Niagara	New York Power Authority	Lewiston, NY	15 TWh	Dec 1960	Mar 2025	Water
Robert Moses Power Dam	New York Power Authority	Massena, NY	7 TWh	Jun 1958	Mar 2025	Water
James A Fitzpatrick	Constellation Nuclear	Lycoming, NY	7 TWh	Jul 1976	Mar 2025	Nuclear
Sithe Independence Station	Sithe/Independence LLC	Oswego, NY	6 TWh	Jul 1994	Mar 2025	Natural Gas
Linden Cogen Plant	EFS Cogen Holdings I LLC	Linden, NJ	6 TWh	Feb 1992	Mar 2025	Natural Gas : 98.0% Other Gas : 1.4% Distillate Fuel Oil : 0.6%
CPV Valley Energy Center	CPV Valley, LLC	Wawayanda, NY	5 TWh	Apr 2018	Mar 2025	Natural Gas
R E Ginna Nuclear Power Plant	Constellation Nuclear	Ontario, NY	5 TWh	Jun 1970	Mar 2025	Nuclear
Astoria Energy	Astoria Energy LLC	New York, NY	4 TWh	Apr 2006	Mar 2025	Natural Gas : 98.4% Distillate Fuel Oil : 1.6%
Cricket Valley Energy	Cricket Valley Energy Center LLC	Dover, NY	4 TWh	Mar 2020	Mar 2025	Natural Gas
Astoria Energy II	Astoria Energy II LLC	Astoria, NY	4 TWh	Jun 2011	Mar 2025	Natural Gas : 97.6% Distillate Fuel Oil : 2.4%
Athens Generating Plant	New Athens Generating Company LLC	Athens, NY	4 TWh	Mar 2003	Mar 2025	Natural Gas
Northport	National Grid Generation LLC	Northport, NY	4 TWh	Feb 1967	Mar 2025	Natural Gas : 94.7% Residual Fuel Oil : 5.3%
Bethlehem Energy Center	Generation Bridge II New York LLC	Glenmont, NY	4 TWh	Jun 2005	Mar 2025	Natural Gas
Zeltmann	New York Power Authority	Astoria, NY	4 TWh	Nov 2005	Mar 2025	Natural Gas : 98.4% Distillate Fuel Oil : 1.6%
Empire Generating Co LLC	Empire Generating Co LLC	Rensselaer, NY	3 TWh	Aug 2010	Mar 2025	Natural Gas : 98.9% Distillate Fuel Oil : 1.1%
East River	Consolidated Edison Co-NY Inc	New York, NY	3 TWh	Oct 1951	Mar 2025	Natural Gas
Ravenswood	Ravenswood Operations LLC	Long Island, NY	3 TWh	Jan 1963	Mar 2025	Natural Gas : 98.7% Kerosene : 1.2%
Brooklyn Navy Yard Cogeneration	Brooklyn Navy Yard Cogen PLP	Brooklyn, NY	2 TWh	Feb 1996	Mar 2025	Natural Gas : 98.2% Distillate Fuel Oil : 1.8%
Caithness Long Island Energy Center	Caithness Long Island, LLC	Yaphank, NY	2 TWh	Jul 2009	Mar 2025	Natural Gas
Bowline Point	Bowline, LLC	West Haverstraw, NY	2 TWh	Aug 1972	Mar 2025	Natural Gas
Arthur Kill Generating Station	NRG Arthur Kill Operations Inc	Staten Island, NY	2 TWh	Aug 1959	Mar 2025	Natural Gas
E F Barrett	National Grid Generation LLC	Island Park, NY	1 TWh	Oct 1956	Mar 2025	Natural Gas : 98.8% Residual Fuel Oil : 0.9%
Astoria Generating Station	U S Power Generating Company LLC	Astoria, NY	730 GWh	Feb 1954	Dec 2023	Natural Gas : 88.9% Residual Fuel Oil : 11.1%
Bayonne Energy Center	Bayonne Energy Center LLC	Bayonne, NJ	710 GWh	May 2012	Mar 2025	Natural Gas
Maple Ridge Wind Farm	Flat Rock Windpower, LLC	Lowville, NY	698 GWh	Nov 2005	Mar 2025	Wind
Greenidge Generation LLC	Greenidge Generation Holdings LLC	Dresden, NY	624 GWh	Nov 1953	Dec 2023	Natural Gas
Covanta Hempstead	Covanta Hempstead Company	Westbury, NY	598 GWh	Mar 1989	Mar 2025	Non-biogenic Municipal Solid Waste : 54.9% Biogenic Municipal Solid Waste : 44.9%
Bethpage Power Plant	Calpine Eastern Corp	Hicksville, NY	595 GWh	Jul 1989	Dec 2023	Natural Gas
Indeck Corinth Energy Center	Indeck-Corinth Ltd Partnership	Corinth, NY	514 GWh	Jan 1995	Dec 2023	Natural Gas
Marble River Wind Farm	Marble River, LLC	Churubusco, NY	455 GWh	Oct 2012	Mar 2025	Wind
Richard M Flynn	New York Power Authority	Holtsville, NY	429 GWh	Apr 1994	Nov 2023	Natural Gas : 95.7% Distillate Fuel Oil : 4.3%
Curtis Palmer Hydroelectric	Palmer Hydroelectric	Corinth, NY	393 GWh	Sep 1985	Dec 2023	Water
South Fork Wind	Orsted Wind Power North America LLC	East Hampton, NY	388 GWh	-	Mar 2025	Wind
Wheelabrator Westchester	Wheelabrator Environmental Systems	Peekskill, NY	379 GWh	Sep 1984	Mar 2025	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Baron Winds Farm	RWE Renewables Americas, LLC	Cohocton, NY	353 GWh	Jan 2023	Mar 2025	Wind
Port Jefferson	National Grid Generation LLC	Port Jefferson, NY	333 GWh	Oct 1958	Mar 2025	Natural Gas : 92.9% Residual Fuel Oil : 6.6%
RED-Rochester, LLC	RED-Rochester, LLC	Rochester, NY	322 GWh	Jul 1954	Mar 2025	Natural Gas
Bluestone Wind, LLC	Bluestone Wind, LLC	Sanford, NY	320 GWh	Sep 2023	Mar 2025	Wind
Number Three Wind Project	Invenergy Services LLC	Lowville, NY	294 GWh	Apr 2023	Mar 2025	Wind
Eight Point Wind	Eight Point Wind, LLC	Rexville, NY	291 GWh	Jan 2023	Mar 2025	Wind
Stony Brook Cogen Plant	Nissequoque Cogen Partners	Stony Brook, NY	289 GWh	Mar 1995	Dec 2023	Natural Gas : 99.7%
Roseton Generating Facility	CCI Roseton LLC	Newsburgh, NY	283 GWh	Aug 1974	Mar 2025	Natural Gas : 77.4% Residual Fuel Oil : 22.6%
Ball Hill Wind Energy, LLC	Ball Hill Wind Energy, LLC	Forestville, NY	280 GWh	Nov 2023	Mar 2025	Wind
Copenhagen Wind Farm	EDF Renewable Asset Holdings, Inc.	Copenhagen, NY	257 GWh	Nov 2018	Mar 2025	Wind
Spier Falls	Erie Boulevard Hydropower LP	Gansevoort, NY	253 GWh	Dec 1923	Dec 2023	Water
Arkwright Summit Wind Farm LLC	Arkwright Summit Wind Farm LLC	Fredonia, NY	249 GWh	Jul 2018	Mar 2025	Wind
Hudson Falls Hydroelectric Project	Boralex Hydro Operations Inc	South Glens Falls, NY	242 GWh	Oct 1995	Dec 2023	Water
Cassadaga Wind Farm	RWE Renewables Americas, LLC	Cherry Creek, NY	234 GWh	Jun 2021	Mar 2025	Wind
Saranac Facility	Saranac Power Partners LP	Plattsburgh, NY	234 GWh	May 1994	Dec 2023	Natural Gas
Jericho Rise Wind Farm LLC	Jericho Rise Wind Farm LLC	Chateaugay, NY	234 GWh	Nov 2016	Mar 2025	Wind
Stony Creek Wind Farm NY	Invenergy Services LLC	Strykersville, NY	222 GWh	Oct 2013	Dec 2023	Wind
Cornell University Central Heat	Cornell University	Ithaca, NY	217 GWh	Jun 1988	Dec 2023	Natural Gas
Onondaga County Resource Recovery	Covanta Onondega LP	Jamesville, NY	209 GWh	Oct 1994	Mar 2025	Non-biogenic Municipal Solid Waste : 54.7% Biogenic Municipal Solid Waste : 44.7% Natural Gas : 0.6%
Sherman Island	Erie Boulevard Hydropower LP	Queensbury, NY	204 GWh	Dec 1922	Dec 2023	Water
Ticonderoga Mill	Sylvamo North America LLC	Ticonderoga, NY	193 GWh	Dec 1969	Mar 2025	Natural Gas : 58.1% Black Liquor : 34.9% Residual Fuel Oil : 4.3% Wood/Wood Waste Solids : 2.7%
Huntington Resource Recovery Facility	Huntington Resource Recovery	East Northport, NY	193 GWh	Nov 1991	Mar 2025	Non-biogenic Municipal Solid Waste : 54.8% Biogenic Municipal Solid Waste : 44.9%
Roaring Brook, LLC	Avangrid Renewables LLC	Lowville, NY	189 GWh	Sep 2021	Mar 2025	Wind
Cohocton Wind Project	Evergreen Wind, LLC	Cohocton, NY	185 GWh	Dec 2008	Dec 2023	Wind
High Sheldon Wind Farm	Invenergy Services LLC	Strykersville, NY	184 GWh	Jan 2009	Dec 2023	Wind
Covanta Niagara I, LLC	Covanta Energy of Niagara LP	Niagara Falls, NY	178 GWh	Jul 1980	Mar 2025	Non-biogenic Municipal Solid Waste : 50.8% Biogenic Municipal Solid Waste : 41.5% Natural Gas : 7.7%
Wethersfield	Valcour Operating Services, LLC	Gainsville, NY	176 GWh	Mar 2009	Dec 2023	Wind
Carr Street Generating Station	Carr Street Generating Sta LP	East Syracuse, NY	173 GWh	Jun 1993	Dec 2023	Natural Gas
Colton	Erie Boulevard Hydropower LP	Pierrepont, NY	172 GWh	Dec 1917	Dec 2023	Water
Riverbay	Riverbay Corp	New York, NY	169 GWh	Feb 2011	Dec 2023	Natural Gas : 98.8% Distillate Fuel Oil : 1.2%
School Street	Erie Boulevard Hydropower LP	Cohoes, NY	169 GWh	Dec 1914	Dec 2023	Water
Bliss	Valcour Operating Services, LLC	Bliss, NY	161 GWh	Apr 2008	Dec 2023	Wind
Hardscrabble Wind Power LLC	Avangrid Renewables LLC	Little Falls, NY	155 GWh	Dec 2010	Dec 2023	Wind
Glenwood Landing	National Grid Generation LLC	Glenwood Landing, NY	154 GWh	Mar 1967	Dec 2023	Natural Gas : 99.8%
Lederle Laboratories	Veolia NA - Municipal & Commercial Business	Pearl River, NY	149 GWh	Jun 1990	Mar 2025	Natural Gas : 99.5% Distillate Fuel Oil : 0.5%
Chateaugay	Valcour Operating Services, LLC	Chateaugay, NY	141 GWh	Mar 2009	Dec 2023	Wind
Trenton Falls	Erie Boulevard Hydropower LP	Barneveld, NY	140 GWh	Dec 1918	Dec 2023	Water
Glen Park Hydroelectric Project	Eagle Creek Renewable Energy, LLC	Watertown, NY	137 GWh	Sep 1999	Dec 2023	Water
Stewarts Bridge	Erie Boulevard Hydropower LP	Corinth, NY	134 GWh	Dec 1951	Dec 2023	Water
Covanta Babylon Inc	Covanta Babylon Inc	West Babylon, NY	127 GWh	Dec 1988	Mar 2025	Non-biogenic Municipal Solid Waste : 54.7% Biogenic Municipal Solid Waste : 44.7% Distillate Fuel Oil : 0.6%
Finch Paper	Finch Paper LLC	Glen Falls, NY	125 GWh	May 1987	Dec 2023	Wood Waste Liquids, excluding Black Liquor : 50.6% Natural Gas : 29.5% Wood/Wood Waste Solids : 19.9%
Clinton	Valcour Operating Services, LLC	Churubusco, NY	123 GWh	Apr 2008	Dec 2023	Wind
Vernon Boulevard	New York Power Authority	Long Island City, NY	120 GWh	Jul 2001	Dec 2023	Natural Gas
Altona	Valcour Operating Services, LLC	Altona, NY	120 GWh	Mar 2009	Dec 2023	Wind
Rainbow Falls Hydro	Erie Boulevard Hydropower LP	Parishville, NY	119 GWh	Dec 1955	Dec 2023	Water
Five Falls	Erie Boulevard Hydropower LP	Colton, NY	115 GWh	Dec 1954	Dec 2023	Water
Ellenburg	Valcour Operating Services, LLC	Churubusco, NY	111 GWh	Apr 2008	Dec 2023	Wind
Stark	Erie Boulevard Hydropower LP	Colton, NY	111 GWh	Dec 1956	Dec 2023	Water
Howard Wind Farm	Howard Wind LLC (Longroad)	Hornell, NY	108 GWh	Nov 2011	Dec 2023	Wind
South Glens Falls Hydroelectric	Boralex Hydro Operations Inc	South Glens Falls, NY	101 GWh	Jul 1994	Dec 2023	Water
Hell Gate	New York Power Authority	Bronx, NY	100 GWh	Jun 2001	Dec 2023	Natural Gas
Edgewood Energy LLC	Edgewood Energy LLC	Brentwood, NY	97 GWh	Jun 2002	Dec 2023	Natural Gas
Lockport Energy Associates LP	Lockport Energy Associates LP	Lockport, NY	96 GWh	Jun 1992	Dec 2023	Natural Gas
Bennetts Bridge	Erie Boulevard Hydropower LP	Altmar, NY	96 GWh	Dec 1931	Dec 2023	Water
High River Energy Center, LLC	High River Energy Center, LLC	Florida, NY	96 GWh	-	Mar 2025	Solar
South Colton	Erie Boulevard Hydropower LP	Colton, NY	95 GWh	Dec 1953	Dec 2023	Water
Harlem River Yard	New York Power Authority	Bronx, NY	93 GWh	Jun 2001	Dec 2023	Natural Gas
Castleton Energy Center	Fortistar Castleton Power	Castleton, NY	90 GWh	Jan 1992	Dec 2023	Natural Gas : 99.4% Distillate Fuel Oil : 0.6%
High Falls - Saranac NY	New York State Elec & Gas Corp	Town of Saranac, NY	88 GWh	Jul 1948	Dec 2023	Water
Schaghticoke	Erie Boulevard Hydropower LP	Schaghticoke, NY	86 GWh	Dec 1907	Dec 2023	Water
Pinelawn Power LLC	Pinelawn Power LLC	West Babylon, NY	82 GWh	Jun 2005	Dec 2023	Natural Gas
Prospect	Erie Boulevard Hydropower LP	Prospect, NY	81 GWh	Dec 1958	Dec 2023	Water
Upper Mechanicville	New York State Elec & Gas Corp	Town of Stillwater, NY	80 GWh	Aug 1983	Dec 2023	Water
Dutch Hill Wind Project	Evergreen Wind, LLC	Cohocton, NY	79 GWh	Dec 2008	Dec 2023	Wind
Ontario LFGTE	Seneca Energy II	Stanley, NY	78 GWh	Oct 2003	Dec 2023	Landfill Gas

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	727.7 GWh	4
#25	Dominion Energy South Carolina, Inc.	26.1 TWh	85
#13	Duke Energy Carolinas	111.4 TWh	556
#17	Duke Energy Progress East	65.1 TWh	554
#52	Duke Energy Progress West	4.1 TWh	10
#15	ISO New England	103.2 TWh	1,487
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	33.8 TWh	20
#1	PJM Interconnection, LLC	858.5 TWh	2,305
#29	South Carolina Public Service Authority	19.2 TWh	33
#60	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	251.8 TWh	393
#7	California Independent System Operator	190.1 TWh	1,943
#8	Tennessee Valley Authority	158.8 TWh	170
#10	Florida Power & Light Co.	148.3 TWh	159
#12	New York Independent System Operator	130.6 TWh	1,100
#13	Duke Energy Carolinas	111.4 TWh	556
#15	ISO New England	103.2 TWh	1,487
#16	Bonneville Power Administration	82.2 TWh	158
#17	Duke Energy Progress East	65.1 TWh	554
#18	Salt River Project Agricultural Improvement and Power District	58.7 TWh	45