For Suppliers and Partners 
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) Web site 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.

 

NYISO Zones  WestGeneseeCentralMohawk ValleyNorthCapitalHudson ValleyMillwoodMillwoodMillwood

A - West Zone

B - Genesee Zone

C - Central Zone

D - North Zone

E - Mohawk Valley Zone

F - Capital Zone

G - Hudson Valley Zone

H - Millwood Zone

 

  

West Zone

 

 
County

Name

Sub-Zone
Cattaraugus

 

 

Town of

 
 

Cold Springs

NYSEG NY West 
 

Conewang

NYSEG NY West 
 

Dayton

NYSEG NY West 
 

Leon

NYSEG NY West 
 

Napoli

NYSEG NY West 
 

New Albion

NYSEG NY West 
 

Perrysburg

NYSEG NY West 
 

Persia

NYSEG NY West 
 

Randolph

NYSEG NY West 
 

South Valley

NYSEG NY West 
 

Yorkshire

NYSEG NY West 
 

Village of

 
 

Cattaraugus

NYSEG NY West 
 

East Randolph

NYSEG NY West 
 

Gowanda

NYSEG NY West 
 

Perrysburg

NYSEG NY West 
 

Randolph

NYSEG NY West 
 

South Dayton

NYSEG NY West 
Chautauqua

 

 
 

Town of

 
 

Cherry Creek

NYSEG NY West 
 

Ellington

NYSEG NY West 
 

Hanover

NYSEG NY West 
 

Sheridan

NYSEG NY West 
 

Villenova

NYSEG NY West 

Village of

 
 

Cherry Creek

NYSEG NY West
 

Forestville

NYSEG NY West 
 

Silver Creek

NYSEG NY West 
Erie

 

 
 

Town of

 
 

Alden

NYSEG NY West 
 

Amherst

NYSEG NY West 
 

Aurora

NYSEG NY West 
 

Boston

NYSEG NY West 
 

Cheektowaga

NYSEG NY West 
 

Clarence

NYSEG NY West 
 

Colden

NYSEG NY West 
 

Collins

NYSEG NY West 
 

Concord

NYSEG NY West 
 

Elma

NYSEG NY West 
 

Hamburg

NYSEG NY West 
 

Holland

NYSEG NY West 
 

Lancaster

NYSEG NY West 
 

Marilla

NYSEG NY West 
 

Newstead

NYSEG NY West 
 

Orchard Park

NYSEG NY West 
 

Sardinia

NYSEG NY West 
 

Wales

NYSEG NY West 
 

West Seneca

NYSEG NY West 
 

Village of

 
 

Alden

NYSEG NY West 
 

Blasdell

NYSEG NY West 
 

Depew

NYSEG NY West 
 

East Aurora

NYSEG NY West 
 

Gowanda

NYSEG NY West 
 

Hamburg

NYSEG NY West 
 

Lancaster

NYSEG NY West 
 

Orchard Park

NYSEG NY West 
 

Sloan

NYSEG NY West 
Niagara

 

 
 

City of

 
 

Lockport

NYSEG NY West 
 

Town of

NYSEG NY West 
 

Cambria

NYSEG NY West 
 

Hartland

NYSEG NY West 
 

Lewiston

NYSEG NY West 
 

Newfane

NYSEG NY West 
 

Niagara

NYSEG NY West 
 

Pendleton

NYSEG NY West 
 

Royalton

NYSEG NY West 
 

Somerset

NYSEG NY West 
 

Wheatfield

NYSEG NY West 
 

Village of

 
 

Barker

NYSEG NY West 
 

Lockport

NYSEG NY West 
 

Middleport

NYSEG NY West 
 

Olcott

NYSEG NY West 
Orleans

 

 
 

Town of

 
 

Albion

NYSEG NY West 
 

Barre

NYSEG NY West 
 

Gaines

NYSEG NY West 
 

Murray

NYSEG NY West 
 

Ridgeway

NYSEG NY West 
 

Shelby

NYSEG NY West 
 

Yates

NYSEG NY West 
 

Village of

 
 

Albion

NYSEG NY West 
 

Holley

NYSEG NY West 
 

Lyndonville

NYSEG NY West 
 

Medina

NYSEG NY West 
Wyoming

 

 
 

Town of

 
 

Bennington

NYSEG NY West 
 

Java

NYSEG NY West