ISO Maps

Independent System Operator (ISO) Map

For information about New York State's wholesale energy market and these energy pricing zones, visit the New York Independent System Operator's (NYISO's) website at www.nyiso.com.

  • Zones A, B, C, D and E are in the West pricing zone.
  • Zone F is in the East pricing zone.
  • Zones G, H and I are in the Lower Hudson Valley pricing zone.
  • If a customer is a NYSEG electricity customer, the customer's location (based on the electrical connection) relative to the NYISO pricing zone used by NYSEG in determining the supply price (if applicable) for the customer's bill.
  • For details, see NYSEG's PSC approved tariff.

  • Town of Cold Springs
  • Town of Conewang
  • Town of Dayton
  • Town of Leon
  • Town of Napoli
  • Town of New Albion
  • Town of Perrysburg
  • Town of Persia
  • Town of Randolph
  • Town of South Valley
  • Town of Yorkshire
  • Village of Cattaraugus
  • Village of East Randolph
  • Village of Gowanda
  • Village of Perrysburg
  • Village of Randolph
  • Village of South Dayton
  • Town of Cherry Creek
  • Town of Ellington
  • Town of Hanover
  • Town of Sheridan
  • Town of Villenova
  • Village of Cherry Creek
  • Village of Forestville
  • Village of Silver Creek
  • Town of Alden
  • Town of Amherst
  • Town of Aurora
  • Town of Boston
  • Town of Cheektowaga
  • Town of Clarence
  • Town of Colden
  • Town of Collins
  • Town of Concord
  • Town of Elma
  • Town of Hamburg
  • Town of Holland
  • Town of Lancaster
  • Town of Marilla
  • Town of Newstead
  • Town of Orchard Park
  • Town of Sardinia
  • Town of Wales
  • Town of West Seneca
  • Village of Alden
  • Village of Blasdell
  • Village of Depew
  • Village of East Aurora
  • Village of Gowanda
  • Village of Hamburg
  • Village of Lancaster
  • Village of Orchard Park
  • Village of Sloan
  • City of Lockport
  • Town of Cambria
  • Town of Hartland
  • Town of Lewiston
  • Town of Newfane
  • Town of Niagara
  • Town of Pendleton
  • Town of Royalton
  • Town of Somerset
  • Town of Wheatfield
  • Village of Barker
  • Village of Lockport
  • Village of Middleport
  • Village of Olcott
  • Town of Albion
  • Town of Albion
  • Town of Barre
  • Town of Gaines
  • Town of Holley
  • Town of Lyndonville
  • Town of Medina
  • Town of Murray
  • Town of Ridgeway
  • Town of Shelby
  • Town of Yates
  • Town of Bennington
  • Town of Java
  • Town of Alfred
  • Town of Almond
  • Town of Birdsall
  • Town of Burns
  • Town of Genesee
  • Town of Grove
  • Town of Ward
  • Town of West Almond
  • Village of Alfred
  • Village of Almond
  • Village of Canaseraga
  • City of Binghamton
  • Town of Barker
  • Town of Binghamton
  • Town of Chenango
  • Town of Colesville
  • Town of Conklin
  • Town of Dickinson
  • Town of Fenton
  • Town of Kirkwood
  • Town of Lisle
  • Town of Maine
  • Town of Nanticoke
  • Town of Triangle
  • Town of Union
  • Town of Vestal
  • Town of Windsor
  • Village of Endicott
  • Village of Johnson City
  • Village of Lisle
  • Village of Port Dickinson
  • Village of Whitney Point
  • Village of Windsor
  • City of Olean
  • Town of Allegany
  • Town of Carrollton
  • Town of Olean
  • Village of Allegany
  • Village of Limestone
  • City of Auburn
  • Town of Aurelius
  • Town of Brutus
  • Town of Fleming
  • Town of Genoa
  • Town of Ledyard
  • Town of Locke
  • Town of Mentz
  • Town of Montezuma
  • Town of Moravia
  • Town of Owasco
  • Town of Scipio
  • Town of Sempronius
  • Town of Sennett
  • Town of Springport
  • Town of Summerhill
  • Town of Throop
  • Town of Venice
  • Village of Aurora
  • Village of Cayuga
  • Village of Moravia
  • Village of Port Byron
  • Village of Union Springs
  • Village of Weedsport
  • City of Elmira
  • Town of Baldwin
  • Town of Big Flats
  • Town of Catlin
  • Town of Chemung
  • Town of Elmira
  • Town of Erin
  • Town of Horseheads
  • Town of Southport
  • Town of Van Etten
  • Town of Veteran
  • Village of Elmira Heights
  • Village of Horseheads
  • Village of Millport
  • Village of Van Etten
  • Village of Wellsburg
  • Town of Coventry
  • Town of German
  • Town of Greene
  • Town of McDonough
  • Town of Otselic
  • Town of Pharsalia
  • Town of Pitcher
  • Village of Greene
  • Village of Oxford
  • City of Cortland
  • Town of Cincinnatus
  • Town of Cortlandville
  • Town of Freetown
  • Town of Harford
  • Town of Homer
  • Town of Lapeer
  • Town of Marathon
  • Town of Preble
  • Town of Taylor
  • Town of Virgil
  • Town of Willet
  • Village of Homer
  • Village of Marathon
  • Village of McGraw
  • Town of Conesus
  • Town of Groveland
  • Town of Leicester
  • Town of Mt. Morris
  • Town of North Dansville
  • Town of Nunda
  • Town of Ossian
  • Town of Portage
  • Town of Sparta
  • Town of Springwater
  • Town of West Sparta
  • Village of Dansville
  • Village of Leicester
  • Village of Nunda
  • Town of DeRuyter
  • Town of Georgetown
  • Village of DeRuyter
  • Town of Camillus
  • Town of Elbridge
  • Town of Marcellus
  • Town of Otisco
  • Town of Skaneateles
  • Town of Spafford
  • Town of Van Buren
  • Village of Elbridge
  • Village of Jordan
  • Village of Marcellus
  • Village of Skaneateles
  • City of Canandaigua
  • City of Geneva
  • Town of Canandaigua
  • Town of Geneva
  • Town of Gorham
  • Town of Hopewell
  • Town of Manchester
  • Town of Naples
  • Town of Phelps
  • Town of Seneca
  • Village of Clifton Springs
  • Village of Manchester
  • Village of Naples
  • Village of Phelps
  • Village of Rushville
  • Village of Shortsville
  • Town of Moravia
  • Town of Catharine
  • Town of Cayuta
  • Town of Dix
  • Town of Hector
  • Town of Montour
  • Town of Orange
  • Town of Reading
  • Town of Tyrone
  • Village of Burdett
  • Village of Montour Falls
  • Village of Odessa
  • Village of Watkins Glen
  • Town of Covert
  • Town of Fayette
  • Town of Junius
  • Town of Lodi
  • Town of Ovid
  • Town of Romulus
  • Town of Seneca Falls
  • Town of Tyre
  • Town of Varick
  • Town of Waterloo
  • City of Corning
  • City of Hornell
  • Town of Addison
  • Town of Avoca
  • Town of Bath
  • Town of Bradford
  • Town of Cameron
  • Town of Campbell
  • Town of Canisteo
  • Town of Caton
  • Town of Cohocton
  • Town of Corning
  • Town of Dansville
  • Town of Erwin
  • Town of Fremont
  • Town of Greenwood
  • Town of Hartsville
  • Town of Hornby
  • Town of Hornellsville
  • Town of Howard
  • Town of Jasper
  • Town of Lindley
  • Town of Prattsburg
  • Town of Pulteney
  • Town of Rathbone
  • Town of Thurston
  • Town of Troupsburg
  • Town of Tuscarora
  • Town of Urbana
  • Town of Wayland
  • Town of Wayne
  • Town of West Union
  • Town of Wheeler
  • Town of Woodhull
  • Village of Addison
  • Village of Almond
  • Village of Arkport
  • Village of Avoca
  • Village of Bath
  • Village of Canisteo
  • Village of Cohocton
  • Village of Hammondsport
  • Village of North Hornell
  • Village of Painted Post
  • Village of Riverside
  • Village of Savona
  • Village of South Corning
  • Village of Wayland
  • Town of Barton
  • Town of Berkshire
  • Town of Candor
  • Town of Newark Valley
  • Town of Nichols
  • Town of Owego
  • Town of Richford
  • Village of Candor
  • Village of Nichols
  • Village of Owego
  • City of Ithaca
  • Town of Danby
  • Town of Dryden
  • Town of Enfield
  • Town of Groton
  • Town of Ithaca
  • Town of Lansing
  • Town of Ulysses
  • Village of Dryden
  • City of Plattsburgh
  • Town of Altona
  • Town of Ausable
  • Town of Beekmantown
  • Town of Black Brook
  • Town of Champlain
  • Town of Chazy
  • Town of Clinton
  • Town of Dannemora
  • Town of Ellenburg
  • Town of Mooers
  • Town of Peru
  • Town of Plattsburgh
  • Town of Saranac
  • Town of Schuyler Falls
  • Village of Champlain
  • Village of Dannemora
  • Village of Keeseville
  • Village of Mooers
  • Village of Rouses Point
  • Town of Chesterfield
  • Town of Essex (part of)
  • Town of Jay
  • Town of Keene (part of)
  • Town of Lewis (part of)
  • Town of Willsboro
  • Town of Wilmington
  • Village of Keeseville
  • Town of Altamont
  • Town of Bangor
  • Town of Bellmont
  • Town of Brandon
  • Town of Brighton
  • Town of Burke
  • Town of Chateaugay
  • Town of Constable
  • Town of Dickinson
  • Town of Franklin
  • Town of Malone
  • Village of Burke
  • Village of Chateaugay
  • Town of Sanford
  • Village of Deposit
  • City of Norwich
  • Town of Afton
  • Town of Bainbridge
  • Town of Columbus
  • Town of Guilford
  • Town of New Berlin
  • Town of North Norwich
  • Town of Oxford
  • Town of Plymouth
  • Town of Preston
  • Town of Sherburne
  • Town of Smithville
  • Town of Smyrna
  • Village of Afton
  • Village of Bainbridge
  • Village of Earlville
  • Village of New Berlin
  • Village of Norwich
  • Village of Sherburne
  • Village of Smyrna
  • Town of Andes
  • Town of Bovina
  • Town of Colchester
  • Town of Davenport
  • Town of Delhi
  • Town of Deposit
  • Town of Franklin
  • Town of Hamden
  • Town of Hancock
  • Town of Harpersfield
  • Town of Kortright
  • Town of Masonville
  • Town of Meredith
  • Town of Middletown
  • Town of Roxbury
  • Town of Sidney
  • Town of Stamford
  • Town of Tompkins
  • Town of Walton
  • Village of Andes
  • Village of Delhi
  • Village of Deposit
  • Village of Fleischmanns
  • Village of Franklin
  • Village of Hancock
  • Village of Hobart
  • Village of Margaretville
  • Village of Sidney
  • Village of Stamford
  • Village of Walton
  • Town of Newcomb
  • Town of Ashland
  • Town of Halcott
  • Town of Jewett
  • Town of Lexington
  • Town of Prattsville
  • Town of Windham
  • Town of Arietta
  • Town of Indian Lake
  • Town of Long Lake
  • Town of Columbia
  • Town of Litchfield
  • Town of Warren
  • Town of Winfield
  • Village of West Winfield
  • Town of Diana
  • Town of Harrisville
  • Town of Lowville
  • Town of Lyonsdale
  • Town of Martinsburg
  • Town of Turin
  • Town of West Turin
  • Village of Constableville
  • Village of Lowville
  • Village of Lyons Falls (W. urin)
  • Village of Lyons Falls Lyonsdale)
  • Village of Turin
  • Town of Brookfield
  • Town of Eaton
  • Town of Hamilton
  • Town of Lebanon
  • Town of Madison
  • Town of Smithfield
  • Village of Earlville
  • Village of Hamilton
  • Village of Madison
  • Village of Morrisville
  • Town of Augusta
  • Town of Bridgewater
  • Town of Kirkland
  • Town of Marshall
  • Town of Sangerfield
  • Village of Bridgewater
  • Village of Oriskany Falls
  • Village of Waterville
  • City of Oneonta
  • Town of Burlington
  • Town of Butternuts
  • Town of Edmeston
  • Town of Exeter
  • Town of Hartwick
  • Town of Laurens
  • Town of Maryland
  • Town of Middlefield
  • Town of Milford
  • Town of Morris
  • Town of New Lisbon
  • Town of Oneonta
  • Town of Otego
  • Town of Otsego
  • Town of Pittsfield
  • Town of Plainfield
  • Town of Richfield
  • Town of Springfield
  • Town of Unadilla
  • Town of Westford
  • Village of Cooperstown
  • Village of Gilbertsville
  • Village of Laurens
  • Village of Milford
  • Village of Morris
  • Village of Otego
  • Village of Richfield Springs
  • Village of Unadilla
  • Town of Carlisle
  • Town of Cobleskill
  • Town of Conesville
  • Town of Gilboa
  • Town of Jefferson
  • Village of Cobleskill
  • Town of Bethel
  • Town of Callicoon
  • Town of Cochecton
  • Town of Delaware
  • Town of Fallsburgh
  • Town of Fremont
  • Town of Highland
  • Town of Liberty
  • Town of Neversink
  • Town of Rockland
  • Town of Thompson
  • Town of Tusten
  • Village of Jeffersonville
  • Village of Liberty
  • Village of Monticello
  • Village of Woodbridge
  • Town of Austerlitz
  • Town of Canaan
  • Town of Chatham
  • Town of Claverack
  • Town of Copake
  • Town of Ghent
  • Town of Hillsdale
  • Town of New Lebanon
  • Town of Philmont
  • Town of Taghkanic
  • Village of Chatham
  • Town of Elizabethtown
  • Town of Essex (part of)
  • Town of Keene (part of)
  • Town of Lewis (part of)
  • Town of Moriah
  • Town of Westport
  • Town of Berlin
  • Town of Nassau
  • Town of North Greenbush
  • Town of Petersburg
  • Town of Sand Lake
  • Town of Schaghtioke
  • Town of Stephentown
  • City of Mechanicville
  • Town of Clifton Park
  • Town of Halfmoon
  • Town of Malta
  • Town of Stillwater
  • Village of Round Lake
  • Town of Easton
  • Town of Fort Ann
  • Town of Granville
  • Town of Greenwich
  • Town of Hebron
  • Town of Jackson
  • Town of Salem
  • Village of Granville
  • Village of Salem
  • Town of Montgomery
  • Village of Walden
  • Town of Amenia
  • Town of Beekman
  • Town of Dover
  • Town of East Fishkill
  • Town of Northeast
  • Town of Pawling
  • Town of Unionvale
  • Village of Pawling
  • Town of Carmel
  • Town of Kent
  • Town of Patterson
  • Town of Putnam Valley
  • Town of Southeast
  • Village of Brewster
  • Town of Bedford
  • Town of Lewisboro
  • Town of North Salem
  • Town of Poundridge
  • Town of Somers
  • Town of Yorktown