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	Oct 2026
Annual Generation	134.1 TWh
Power Plants	1,334
Utilities	620
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 \| 54.2% Nuclear \| 19.4% Water \| 18.3% Wind \| 5.2% Other Fuel \| 2.9%

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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
Cornell Hydro	Cornell Renewable	Ithaca, NY	3 GWh	Nov 1981	Jul 2026	Water
Robert Moses Power Dam	New York Power Authority	Massena, NY	7 TWh	Jun 1958	Jul 2026	Water
Morris Ridge Solar	Morris Ridge Solar Energy Center, LLC	Mount Morris, NY	300 GWh	Oct 2024	Jul 2026	Solar
Sithe Independence Station	Sithe/Independence LLC	Oswego, NY	7 TWh	Jul 1994	Jul 2026	Natural Gas
Robert Moses Niagara	New York Power Authority	Lewiston, NY	14 TWh	Dec 1960	Jul 2026	Water
Lederle Laboratories	Veolia NA - Municipal & Commercial Business	Pearl River, NY	141 GWh	Jun 1990	Jul 2026	Natural Gas : 99.1% Distillate Fuel Oil : 0.9%
Empire Generating Co LLC	Empire Generating Co LLC	Rensselaer, NY	3 TWh	Aug 2010	Jul 2026	Natural Gas : 97.2% Distillate Fuel Oil : 2.8%
Arthur Kill Generating Station	Arthur Kill Power, LLC	Staten Island, NY	1 TWh	Aug 1959	Jul 2026	Natural Gas
East River	Consolidated Edison Co-NY Inc	New York, NY	3 TWh	Oct 1951	Jul 2026	Natural Gas
Ravenswood	Ravenswood Operations LLC	Long Island, NY	3 TWh	Jan 1963	Jul 2026	Natural Gas : 84.6% Distillate Fuel Oil : 15.4%
Astoria Energy	Astoria Energy LLC	New York, NY	4 TWh	Apr 2006	Jul 2026	Natural Gas : 95.5% Distillate Fuel Oil : 4.5%
E F Barrett	National Grid Generation LLC	Island Park, NY	1 TWh	Oct 1956	Jul 2026	Natural Gas : 95.6% Residual Fuel Oil : 3.8% Distillate Fuel Oil : 0.6%
RED-Rochester, LLC	RED-Rochester, LLC	Rochester, NY	342 GWh	Jul 1954	Jul 2026	Natural Gas
South Fork Wind	Orsted Wind Power North America LLC	East Hampton, NY	520 GWh	Jun 2024	Jul 2026	Wind
Northport	National Grid Generation LLC	Northport, NY	4 TWh	Feb 1967	Jul 2026	Natural Gas : 88.3% Residual Fuel Oil : 11.7%
Port Jefferson	National Grid Generation LLC	Port Jefferson, NY	404 GWh	Oct 1958	Jul 2026	Natural Gas : 80.8% Residual Fuel Oil : 17.9% Distillate Fuel Oil : 1.3%
Cassadaga Wind Farm	RWE Clean Energy	Cherry Creek, NY	236 GWh	Jun 2021	Jul 2026	Wind
Huntington Resource Recovery Facility	Huntington Resource Recovery	East Northport, NY	199 GWh	Nov 1991	Jul 2026	Non-biogenic Municipal Solid Waste : 54.8% Biogenic Municipal Solid Waste : 44.9%
Bethlehem Energy Center	GB II New York LLC	Glenmont, NY	3 TWh	Jun 2005	Jul 2026	Natural Gas
Reworld Niagara I	Reworld Niagara I, LLC	Niagara Falls, NY	174 GWh	Jul 1980	Jul 2026	Non-biogenic Municipal Solid Waste : 50.6% Biogenic Municipal Solid Waste : 41.4% Natural Gas : 8.0%
Covanta Hempstead	Covanta Hempstead Company	Westbury, NY	471 GWh	Mar 1989	Jul 2026	Non-biogenic Municipal Solid Waste : 54.7% Biogenic Municipal Solid Waste : 44.8%
Seneca Energy	Seneca Energy II	Seneca Falls, NY	26 GWh	Feb 1996	Jul 2026	Landfill Gas
CPV Valley Energy Center	CPV Valley, LLC	Wawayanda, NY	5 TWh	Apr 2018	Jul 2026	Natural Gas
Maple Ridge Wind Farm	Flat Rock Windpower, LLC	Lowville, NY	616 GWh	Nov 2005	Jul 2026	Wind
Ticonderoga Mill	Sylvamo North America LLC	Ticonderoga, NY	210 GWh	Dec 1969	Jul 2026	Natural Gas : 54.9% Black Liquor : 36.7% Residual Fuel Oil : 4.8% Wood/Wood Waste Solids : 3.6%
Wheelabrator Hudson Falls	Wheelabrator Environmental Systems	Hudson Falls, NY	50 GWh	Oct 1991	Jul 2026	Non-biogenic Municipal Solid Waste : 50.5% Biogenic Municipal Solid Waste : 41.3% Natural Gas : 8.2%
Tannery Road Landfill	Tannery Road Solar, LLC	Rome, NY	3 GWh	Jul 2016	Jul 2026	Solar
Shoreham Solar Commons	Deriva Energy	Shoreham, NY	47 GWh	Jun 2018	Jul 2026	Solar
Astoria Energy II	Astoria Energy II LLC	Astoria, NY	3 TWh	Jun 2011	Jul 2026	Natural Gas : 95.4% Distillate Fuel Oil : 4.6%
Baron Winds II	RWE Clean Energy	Steuben, NY	50 GWh	-	Jul 2026	Wind
Eight Point Wind	Eight Point Wind, LLC	Rexville, NY	265 GWh	Jan 2023	Jul 2026	Wind
Bluestone Wind, LLC	Bluestone Wind, LLC	Sanford, NY	310 GWh	Sep 2023	Jul 2026	Wind
Town of Williamson Landfill PV	MN8 Energy LLC	Williamson, NY	1 GWh	Nov 2014	Jul 2026	Solar
Roseton Generating Facility	CCI Roseton LLC	Newsburgh, NY	684 GWh	Aug 1974	Jul 2026	Natural Gas : 71.4% Residual Fuel Oil : 28.6%
Onondaga County Resource Recovery	Covanta Onondega LP	Jamesville, NY	181 GWh	Oct 1994	Jul 2026	Non-biogenic Municipal Solid Waste : 53.8% Biogenic Municipal Solid Waste : 44.1% Natural Gas : 2.1%
Nine Mile Point Nuclear Station	Constellation Nuclear	Lycoming, NY	16 TWh	Nov 1969	Jul 2026	Nuclear
Reworld Babylon Inc	Reworld Babylon Inc	West Babylon, NY	123 GWh	Dec 1988	Jul 2026	Non-biogenic Municipal Solid Waste : 54.5% Biogenic Municipal Solid Waste : 44.6% Distillate Fuel Oil : 0.9%
Linden Cogen Plant	EFS Cogen Holdings I LLC	Linden, NJ	6 TWh	Feb 1992	Jul 2026	Natural Gas : 99.9%
Oswego Harbor Power	Oswego Harbor Power	Oswego, NY	123 GWh	May 1975	Jul 2026	Residual Fuel Oil : 96.3% Natural Gas : 3.7%
R E Ginna Nuclear Power Plant	Constellation Nuclear	Ontario, NY	5 TWh	Jun 1970	Jul 2026	Nuclear
Athens Generating Plant	New Athens Generating Company LLC	Athens, NY	3 TWh	Mar 2003	Jul 2026	Natural Gas
Brooklyn Navy Yard Cogeneration	Brooklyn Navy Yard Cogen PLP	Brooklyn, NY	2 TWh	Feb 1996	Jul 2026	Natural Gas : 97.7% Distillate Fuel Oil : 2.3%
MacArthur Waste to Energy Facility	Reworld MacArthur Renewable Energy	Ronkonkoma, NY	52 GWh	Feb 1990	Jul 2026	Non-biogenic Municipal Solid Waste : 54.5% Biogenic Municipal Solid Waste : 44.6% Natural Gas : 0.9%
Caithness Long Island Energy Center	Caithness Long Island, LLC	Yaphank, NY	2 TWh	Jul 2009	Jul 2026	Natural Gas
Bayonne Energy Center	Bayonne Energy Center LLC	Bayonne, NJ	939 GWh	May 2012	Jul 2026	Natural Gas : 96.8% Distillate Fuel Oil : 3.2%
Marble River Wind Farm	Marble River, LLC	Churubusco, NY	479 GWh	Oct 2012	Jul 2026	Wind
Zeltmann	New York Power Authority	Astoria, NY	2 TWh	Nov 2005	Jul 2026	Natural Gas
Wheelabrator Westchester	Wheelabrator Environmental Systems	Peekskill, NY	384 GWh	Sep 1984	Jul 2026	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
James A Fitzpatrick	Constellation Nuclear	Lycoming, NY	7 TWh	Jul 1976	Jul 2026	Nuclear
Copenhagen Wind Farm	EDF Renewable Asset Holdings, Inc.	Copenhagen, NY	252 GWh	Nov 2018	Jul 2026	Wind
Henkel U.S. Operations Corporation	Henkel U.S. Operations Corporation	Geneva, NY	2 GWh	Dec 2011	Jul 2026	Wind
Steel Sun	CleanCapital Holdings	Lackawanna, NY	4 GWh	Nov 2016	Jul 2026	Solar
Roaring Brook, LLC	Avangrid Power LLC	Lowville, NY	193 GWh	Sep 2021	Jul 2026	Wind
Baron Winds Farm	RWE Clean Energy	Cohocton, NY	305 GWh	Jan 2023	Jul 2026	Wind
Jericho Rise Wind Farm LLC	Jericho Rise Wind Farm LLC	Chateaugay, NY	161 GWh	Nov 2016	Jul 2026	Wind
Long Island Solar Farm LLC	Long Island Solar Farm LLC	Upton, NY	35 GWh	Nov 2011	Jul 2026	Solar
High River Energy Center, LLC	High River Energy Center, LLC	Florida, NY	150 GWh	Jul 2024	Jul 2026	Solar
Number Three Wind Project	Invenergy Services LLC	Lowville, NY	276 GWh	Apr 2023	Jul 2026	Wind
Ball Hill Wind Energy, LLC	Ball Hill Wind Energy, LLC	Forestville, NY	276 GWh	Nov 2023	Jul 2026	Wind
Bowline Point	Bowline, LLC	West Haverstraw, NY	2 TWh	Aug 1972	Jul 2026	Natural Gas : 96.4% Residual Fuel Oil : 3.6%
East Point Energy Center	East Point Energy Center, LLC	Sharon Springs, NY	104 GWh	Apr 2024	Jul 2026	Solar
Arkwright Summit Wind Farm LLC	Arkwright Summit Wind Farm LLC	Fredonia, NY	242 GWh	Jul 2018	Jul 2026	Wind
Cricket Valley Energy	Cricket Valley Energy Center LLC	Dover, NY	7 TWh	Mar 2020	Jul 2026	Natural Gas
High Falls	Central Hudson Gas & Elec Corp	High Falls, NY	5 GWh	Nov 1986	Dec 2025	Water
Dashville	Central Hudson Gas & Elec Corp	Dashville, NY	12 GWh	Dec 1919	Dec 2025	Water
Gowanus Gas Turbines Generating	Astoria Generating Company, L.P.	Brooklyn, NY	61 GWh	May 1971	Dec 2025	Natural Gas : 86.8% Distillate Fuel Oil : 13.2%
Narrows Gas Turbines Generating	Astoria Generating Company, L.P.	Brooklyn, NY	145 GWh	Apr 1972	Dec 2025	Natural Gas : 95.2% Distillate Fuel Oil : 4.8%
59th Street	Consolidated Edison Co-NY Inc	New York, NY	101 MWh	May 1969	Dec 2025	Natural Gas
Southold	National Grid Generation LLC	Greenport, NY	483 MWh	Jul 1964	Dec 2025	Distillate Fuel Oil
Cadyville	New York State Elec & Gas Corp	Town ofSchuyler Falls, NY	18 GWh	Jul 1921	Dec 2025	Water
Greenidge Generation LLC	Greenidge Generation Holdings LLC	Dresden, NY	625 GWh	Nov 1953	Dec 2025	Natural Gas
Harris Lake	New York State Elec & Gas Corp	Town of Newcomb, NY	243 MWh	Aug 1967	Dec 2025	Distillate Fuel Oil
Allens Falls	Erie Boulevard Hydropower LP	Parishville, NY	21 GWh	Dec 1926	Dec 2025	Water
Beardslee	Erie Boulevard Hydropower LP	Little Falls, NY	43 GWh	Dec 1923	Dec 2025	Water
Belfort	Erie Boulevard Hydropower LP	Croghan, NY	10 GWh	Dec 1902	Dec 2025	Water
Ephratah	Erie Boulevard Hydropower LP	Saint Johnsville, NY	6 GWh	Dec 1910	Dec 2025	Water
Fulton Hydro	Erie Boulevard Hydropower LP	Fulton, NY	5 GWh	Dec 1923	Dec 2025	Water
Glenwood Hydro	Erie Boulevard Hydropower LP	Medina, NY	7 GWh	Dec 1949	Dec 2025	Water
Granby	Erie Boulevard Hydropower LP	Fulton, NY	33 GWh	Dec 1982	Dec 2025	Water
Hannawa	Erie Boulevard Hydropower LP	Pierrepont, NY	44 GWh	Dec 1913	Dec 2025	Water
Herrings	Erie Boulevard Hydropower LP	Carthage, NY	18 GWh	Dec 1923	Dec 2025	Water
Heuvelton	Erie Boulevard Hydropower LP	Village of Heuvelton, NY	4 GWh	Dec 1923	Dec 2025	Water
High Dam	Oswego, City of - (NY)	Oswego, NY	19 GWh	Jul 1928	Dec 2025	Water
High Falls - Croghan NY	Erie Boulevard Hydropower LP	Croghan, NY	25 GWh	Dec 1924	Dec 2025	Water
Higley	Erie Boulevard Hydropower LP	Colton, NY	31 GWh	Aug 2003	Dec 2025	Water
Hydraulic Race	Erie Boulevard Hydropower LP	Lockport, NY	7 GWh	Dec 1941	Dec 2025	Water
Inghams	Erie Boulevard Hydropower LP	Little Falls, NY	26 GWh	Dec 1911	Dec 2025	Water
Johnsonville Dam	Erie Boulevard Hydropower LP	Johnsonville, NY	4 GWh	Dec 1908	Dec 2025	Water
Kamargo	Erie Boulevard Hydropower LP	Black River, NY	21 GWh	Dec 1920	Dec 2025	Water
Lighthouse Hill	Erie Boulevard Hydropower LP	Altmar, NY	23 GWh	Dec 1929	Dec 2025	Water
Macomb	Erie Boulevard Hydropower LP	Malone, NY	6 GWh	Dec 1939	Dec 2025	Water
Minetto	Erie Boulevard Hydropower LP	Minetto, NY	31 GWh	Dec 1914	Dec 2025	Water
Varick	Erie Boulevard Hydropower LP	Oswego, NY	20 GWh	Dec 1925	Dec 2025	Water
Holtsville Coast Solar Project	Coast Energy Holdings, LLC	Holtsville, NY	17 MWh	Nov 2025	Dec 2025	Solar
Crescent	New York Power Authority	Crescent, NY	50 GWh	Jun 1924	Dec 2025	Water
Shoemaker	Alliance NYGT, LLC	Middletown, NY	639 MWh	Jun 1972	Dec 2025	Natural Gas
Swinging Bridge 2	Eagle Creek Renewable Energy, LLC	Forestburgh, NY	12 GWh	Jul 1939	Dec 2025	Water
Rochester 26	Rochester Gas & Electric Corp	Rochester, NY	3 GWh	Jul 1952	Dec 2025	Water
Plant No 1 Freeport	Village of Freeport - (NY)	Freeport, NY	26 MWh	Dec 1940	Dec 2025	Distillate Fuel Oil
Plant No 2 Freeport	Village of Freeport - (NY)	Freeport, NY	33 GWh	Apr 1973	Dec 2025	Natural Gas : 97.6% Kerosene : 2.4%

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	433.0 GWh	4
#24	Dominion Energy South Carolina, Inc.	26.1 TWh	83
#13	Duke Energy Carolinas	113.4 TWh	578
#17	Duke Energy Progress East	66.2 TWh	574
#50	Duke Energy Progress West	4.6 TWh	15
#15	ISO New England	112.2 TWh	1,667
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.2 TWh	25
#1	PJM Interconnection, LLC	890.9 TWh	2,806
#28	South Carolina Public Service Authority	19.6 TWh	35
#59	Southeastern Power Administration	1.2 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#6	Southern Company Services, Inc. - Trans	259.3 TWh	423
#7	California Independent System Operator	168.7 TWh	2,170
#9	Tennessee Valley Authority	166.2 TWh	209
#10	Florida Power & Light Co.	153.0 TWh	188
#12	New York Independent System Operator	134.1 TWh	1,334
#13	Duke Energy Carolinas	113.4 TWh	578
#15	ISO New England	112.2 TWh	1,667
#16	Bonneville Power Administration	91.1 TWh	170
#17	Duke Energy Progress East	66.2 TWh	574
#18	PacifiCorp East	61.4 TWh	223