2. Balancing Authorities
  3. New York Independent System Operator

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 AuthorityNew York Independent System Operator
States New Jersey New York
Last Update Nov 2025
Annual Generation 131.6 TWh
Power Plants1,211
Utilities601
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 | 52.7% Nuclear | 21.2% Water | 18.4% Wind | 5.2% Other Fuel | 2.2%

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

List of All New York Independent System Operator Power Plants

Displaying Results 101 to 200 of 901
Plant NameUtilityLocationAnnual GenerationPlant DateLast UpdateFuel Types
Robert Moses Power DamNew York Power AuthorityMassena, NY7 TWhJun 1958Sep 2025 Water
Port JeffersonNational Grid Generation LLCPort Jefferson, NY246 GWhOct 1958Sep 2025 Natural Gas : 89.8% Residual Fuel Oil : 9.5% Distillate Fuel Oil : 0.7%
ProspectErie Boulevard Hydropower LPProspect, NY69 GWhDec 1958Dec 2024 Water
Dunn PaperBiOrigin Specialty ProductsGouverneur, NY7 GWhDec 1958Dec 2024 Water
Arthur Kill Generating StationNRG Arthur Kill Operations IncStaten Island, NY2 TWhAug 1959Sep 2025 Natural Gas
St. Joseph HospitalSt. Joseph Hospital (NY)Yonkers, NY16 MWhDec 1959Dec 2024 Distillate Fuel Oil
Mt. Sinai- MorningsideMt. Sinai- MorningsideNew York, NY17 MWhDec 1959Dec 2024 Distillate Fuel Oil
Robert Moses NiagaraNew York Power AuthorityLewiston, NY15 TWhDec 1960Sep 2025 Water
East HamptonNational Grid Generation LLCEast Hampton, NY12 GWhNov 1962Nov 2024 Distillate Fuel Oil
RavenswoodRavenswood Operations LLCLong Island, NY3 TWhJan 1963Sep 2025 Natural Gas : 98.3% Distillate Fuel Oil : 1.7%
South HamptonNational Grid Generation LLCSouthampton, NY42 MWhFeb 1963Dec 2024 Distillate Fuel Oil
SoutholdNational Grid Generation LLCGreenport, NY686 MWhJul 1964Dec 2024 Distillate Fuel Oil
ShorehamNational Grid Generation LLCWading River, NY353 MWhMar 1966Dec 2024 Distillate Fuel Oil
NorthportNational Grid Generation LLCNorthport, NY4 TWhFeb 1967Sep 2025 Natural Gas : 94.8% Residual Fuel Oil : 5.2%
Glenwood LandingNational Grid Generation LLCGlenwood Landing, NY129 GWhMar 1967Dec 2024 Natural Gas : 84.2% Distillate Fuel Oil : 15.8%
Harris LakeNew York State Elec & Gas CorpTown of Newcomb, NY1 MWhAug 1967Dec 2024 Distillate Fuel Oil
St Johns Riverside HospitalSt Johns Riverside HospitalYonkers, NY38 MWhDec 1967Dec 2024 Distillate Fuel Oil
74th StreetConsolidated Edison Co-NY IncNew York, NY7 MWhSep 1968Dec 2024 Kerosene
59th StreetConsolidated Edison Co-NY IncNew York, NY477 MWhMay 1969Dec 2024 Natural Gas
CoxsackieCentral Hudson Gas & Elec CorpCoxsackie, NY405 MWhNov 1969Dec 2024 Natural Gas : 93.8% Kerosene : 6.2%
Nine Mile Point Nuclear StationConstellation NuclearLycoming, NY16 TWhNov 1969Sep 2025 Nuclear
Ticonderoga MillSylvamo North America LLCTiconderoga, NY203 GWhDec 1969Sep 2025 Natural Gas : 57.6% Black Liquor : 35.6% Residual Fuel Oil : 3.8% Wood/Wood Waste Solids : 2.9%
South CairoCentral Hudson Gas & Elec CorpCairo, NY584 MWhMay 1970Mar 2024 Kerosene
The Mount Sinai HospitalMount Sinai HospitalNew York, NY184 MWhMay 1970Dec 2024 Distillate Fuel Oil
R E Ginna Nuclear Power PlantConstellation NuclearOntario, NY5 TWhJun 1970Sep 2025 Nuclear
Gowanus Gas Turbines GeneratingU S Power Generating Company LLCBrooklyn, NY11 GWhMay 1971Dec 2024 Natural Gas : 99.9%
Woodhull HospitalWoodhull HospitalBrooklyn, NY162 MWhDec 1971Dec 2024 Distillate Fuel Oil
Saint Catherine of Siena Medical CenterSaint Catherine of Siena Medical CenterSmithtown, NY14 MWhDec 1971Dec 2024 Distillate Fuel Oil
Narrows Gas Turbines GeneratingU S Power Generating Company LLCBrooklyn, NY40 GWhApr 1972Dec 2024 Natural Gas : 96.7% Distillate Fuel Oil : 3.3%
GlenwoodNational Grid Generation LLCGlenwood Landing, NY3 GWhMay 1972Dec 2024 Distillate Fuel Oil
HillburnAlliance NYGT, LLCHillburn, NY527 MWhJun 1972Dec 2024 Natural Gas
ShoemakerAlliance NYGT, LLCMiddletown, NY336 MWhJun 1972Nov 2024 Natural Gas
Bowline PointBowline, LLCWest Haverstraw, NY2 TWhAug 1972Aug 2025 Natural Gas : 98.3% Residual Fuel Oil : 1.7%
Plant No 2 FreeportVillage of Freeport - (NY)Freeport, NY31 GWhApr 1973Dec 2024 Natural Gas : 99.7%
Westchester County Medical CenterWestchester County Medical CenterValhalla, NY285 MWhDec 1973Dec 2024 Distillate Fuel Oil
HoltsvilleNational Grid Generation LLCHoltsville, NY21 GWhJun 1974Dec 2024 Kerosene
Roseton Generating FacilityCCI Roseton LLCNewsburgh, NY457 GWhAug 1974Sep 2025 Natural Gas : 86.1% Residual Fuel Oil : 13.9%
Brooklyn Hospital CenterBrooklyn Hospital CenterBrooklyn, NY8 MWhDec 1974Dec 2024 Distillate Fuel Oil
Mount Sinai South Nassau HospitalMount Sinai South Nassau HospitalOceanside, NY11 MWhDec 1974Dec 2024 Distillate Fuel Oil
Oswego Harbor PowerOswego Harbor PowerOswego, NY91 GWhMay 1975Aug 2025 Residual Fuel Oil : 99.5%
Montefiore Mount Vernon HospitalMontefiore Mount Vernon HospitalMount Vernon, NY12 MWhDec 1975Dec 2024 Distillate Fuel Oil
James A FitzpatrickConstellation NuclearLycoming, NY7 TWhJul 1976Sep 2025 Nuclear
Lower Beaver Falls ProjectEagle Creek Renewable Energy, LLCBeaver Falls, NY4 GWhNov 1979Dec 2024 Water
Good Samaritan HospitalGood Samaritan HospitalSuffern, NY25 MWhDec 1979Dec 2024 Distillate Fuel Oil : 92.4% Natural Gas : 7.6%
Reworld Niagara IReworld Niagara I, LLCNiagara Falls, NY128 GWhJul 1980Sep 2025 Non-biogenic Municipal Solid Waste : 49.6% Biogenic Municipal Solid Waste : 40.6% Natural Gas : 9.9%
Cornell HydroCornell HydroIthaca, NY4 GWhNov 1981Jul 2025 Water
Chasm Hydro PartnershipAmpersand Chasm Hydro LLCChateaugay, NY4 GWhFeb 1982Dec 2024 Water
AshokanNew York Power AuthorityKingston, NY11 GWhOct 1982Dec 2024 Water
GranbyErie Boulevard Hydropower LPFulton, NY36 GWhDec 1982Dec 2024 Water
The Bank of New YorkThe Bank of New YorkNew York, NY25 MWhDec 1982Dec 2024 Distillate Fuel Oil
Normanskill Hydro ProjectWatervliet City ofGuilderland, NY2 GWhMar 1983Dec 2024 Water
Montefiore - Westchester SquareMontefiore-Westchester SquareBronx, NY9 MWhJun 1983Dec 2024 Distillate Fuel Oil
Upper MechanicvilleNew York State Elec & Gas CorpTown of Stillwater, NY79 GWhAug 1983Dec 2024 Water
New York University Central PlantNew York UniversityNew York, NY74 GWhDec 1983Dec 2024 Natural Gas : 95.9% Distillate Fuel Oil : 4.1%
Black River Hydro AssociatesCentral Rivers Power US, LLCPort Layden, NY23 GWhDec 1983Dec 2024 Water
Center FallsHollingworth & Vose Co Center FallsGreenwich, NY4 GWhDec 1983Nov 2024 Water
Copenhagen PlantCentral Rivers Power US, LLCCopenhagen, NY9 GWhMay 1984Dec 2024 Water
Lyonsdale AssociatesEagle Creek Renewable Energy, LLCLyons Falls, NY11 GWhJun 1984Dec 2024 Water
Unionville Hydro Project 2499 NYErie Boulevard Hydropower LPNorwood, NY13 GWhJun 1984Dec 2024 Water
Hewittville HydroelectricErie Boulevard Hydropower LPNorwood, NY14 GWhAug 1984Dec 2024 Water
Wheelabrator WestchesterWheelabrator Environmental SystemsPeekskill, NY384 GWhSep 1984Sep 2025 Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Fort Miller Hydroelectric FacilityFort Miller AssociatesNorthumberland, NY15 GWhNov 1984Dec 2024 Water
Upper Beaver Falls ProjectEagle Creek Renewable Energy, LLCBeaver Falls, NY6 GWhDec 1984Dec 2024 Water
Diana HydroelectricEONY Generation LimitedHarrisville, NY8 GWhJun 1985Dec 2024 Water
Dolgeville HydroEONY Generation LimitedDolgeville, NY12 GWhJun 1985Dec 2024 Water
Valley Falls Hydroelectric FacilityValley Falls AssociatesValley Falls, NY6 GWhJul 1985Dec 2024 Water
Curtis Palmer HydroelectricPalmer HydroelectricCorinth, NY326 GWhSep 1985Dec 2024 Water
West End Dam Hydroelectric ProjectRelevate Power Management LLCCarthage, NY23 GWhSep 1985Dec 2023 Water
Port Leyden Hydroelectric ProjectLyonsdale Hydroelectric Co., Inc.Port Leyden, NY5 GWhNov 1985Dec 2024 Water
TalcvilleErie Boulevard Hydropower LPEdwards, NY601 MWhDec 1985Dec 2024 Water
Oswego County Energy RecoveryOswego CountyFulton, NY8 GWhJan 1986Dec 2024 Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
WaldenHydroland Omega LLCWalden, NY840 MWhMar 1986Dec 2023 Water
US Gypsum OakfieldU S Gypsum CoOakfield, NY1 GWhMar 1986Dec 2024 Natural Gas
PhiladlephiaEONY Generation LimitedVillage of Philadelph, NY11 GWhSep 1986Dec 2024 Water
High FallsCentral Hudson Gas & Elec CorpHigh Falls, NY6 GWhNov 1986Aug 2024 Water
Victory MillsCentral Rivers Power US, LLCVictory Mills, NY3 GWhNov 1986Jul 2024 Water
Little Falls HydroEagle Creek Renewable Energy, LLCLittle Falls, NY51 GWhDec 1986Dec 2024 Water
Union FallsUnion Falls Hydro Power LPAu Sable Forks, NY12 GWhDec 1986Dec 2024 Water
Stillwater Reservoir HydroNorthern Power & LightWebb, NY6 GWhDec 1986Dec 2023 Water
Hampshire PaperHampshire Paper Co IncGouverneur, NY12 GWhApr 1987Dec 2024 Water
Finch PaperFinch Paper LLCGlen Falls, NY124 GWhMay 1987Dec 2024 Wood Waste Liquids, excluding Black Liquor : 47.1% Natural Gas : 39.5% Wood/Wood Waste Solids : 13.4%
Moose RiverEONY Generation LimitedLyons Falls, NY45 GWhOct 1987Dec 2024 Water
Dutchess Cnty Resource Recovery FacilityDutchess County RRAPoughkeepsie, NY9 GWhOct 1987Dec 2024 Non-biogenic Municipal Solid Waste : 52.9% Biogenic Municipal Solid Waste : 43.3% Natural Gas : 3.8%
Fourth Branch Hydroelectric FacilityAlbany Engineering CorporationWaterford, NY11 GWhNov 1987Dec 2024 Water
OgdensburgAmpersand Ogdensburg Hydro, LLCOgdensburg, NY4 GWhNov 1987Dec 2023 Water
Newport HydroEagle Creek Renewable Energy, LLCNewport, NY6 GWhNov 1987Dec 2024 Water
Hollow Dam Power PartnershipAmpersand Hollow Dam Hydro LLCGouveneur, NY2 GWhNov 1987Sep 2024 Water
Lachute Hydro LowerCentral Rivers Power US, LLCTiconderoga, NY13 GWhNov 1987Dec 2024 Water
Dahowa HydroGR Catalyst Two LLCGreenwich, NY27 GWhNov 1987Dec 2024 Water
Lachute Hydro UpperCentral Rivers Power US, LLCTiconderoga, NY13 GWhNov 1987Dec 2024 Water
Mount Sinai Beth IsraelMount Sinai Beth IsraelNew York, NY62 MWhDec 1987Dec 2024 Distillate Fuel Oil
Cornell University Central HeatCornell UniversityIthaca, NY222 GWhJun 1988Dec 2024 Natural Gas : 99.9%
Kings Falls HydroelectricSilverstreet HydroCopenhagen, NY2 GWhSep 1988Dec 2024 Water
West Delaware Tunnel PlantErie Boulevard Hydropower LPGrahamsville, NY19 GWhNov 1988Dec 2024 Water
Warrensburg HydroelectricBoralex Hydro Operations IncWarrensburg, NY11 GWhNov 1988Dec 2024 Water
Wappinger Falls HydroelectricWindsor Machinery Co IncWappinger Falls, NY8 GWhNov 1988Dec 2024 Water
Chateaugay High Falls HydroHydroland Omega LLCChateaugay, NY3 GWhNov 1988Dec 2023 Water
Reworld Babylon IncReworld Babylon IncWest Babylon, NY124 GWhDec 1988Sep 2025 Non-biogenic Municipal Solid Waste : 54.7% Biogenic Municipal Solid Waste : 44.7% Distillate Fuel Oil : 0.6%
Covanta HempsteadCovanta Hempstead CompanyWestbury, NY593 GWhMar 1989Sep 2025 Non-biogenic Municipal Solid Waste : 54.9% Biogenic Municipal Solid Waste : 44.9%
Bethpage Power PlantCalpine Eastern CorpHicksville, NY573 GWhJul 1989Dec 2024 Natural Gas

Surrounding Balancing Authorities

RankBalancing AuthorityAnnual Net Generation# Power Plants
#61Alcoa Power Generating, Inc. - Yadkin Division696.7 GWh4
#25Dominion Energy South Carolina, Inc.25.7 TWh87
#13Duke Energy Carolinas112.5 TWh565
#17Duke Energy Progress East64.3 TWh559
#52Duke Energy Progress West4.3 TWh10
#15ISO New England105.5 TWh1,577
#24Louisville Gas and Electric Company and Kentucky Utilities Company34.4 TWh25
#1PJM Interconnection, LLC870.7 TWh2,465
#30South Carolina Public Service Authority18.9 TWh34
#59Southeastern Power Administration1.5 TWh11

Balancing Authorities with Similar Net Generation

RankBalancing AuthorityAnnual Net Generation# Power Plants
#6Southern Company Services, Inc. - Trans250.9 TWh417
#7California Independent System Operator188.0 TWh2,075
#9Tennessee Valley Authority161.6 TWh204
#10Florida Power & Light Co.148.9 TWh187
#12New York Independent System Operator131.6 TWh1,211
#13Duke Energy Carolinas112.5 TWh565
#15ISO New England105.5 TWh1,577
#16Bonneville Power Administration80.5 TWh163
#17Duke Energy Progress East64.3 TWh559
#18PacifiCorp East61.1 TWh216