Calculator – National Grid Service Region


Please enter your monthly usage (kWh) which can be found on your utility bill and enter it into the green box in the upper right-hand corner below. The calculator will tabulate your supply charges for the month in comparison to the corresponding National Grid Basic Service rate.

ENTER MONTHLY KWH:    
PRODUCT OPTION RATE Monthly
Supply Cost
MASSCEA PROGRAM $0.10430 $
NATIONAL GRID RATES, Winter 2019
RESIDENTIAL $0.13718 $
SMALL BUSINESS $0.13166 $
LARGE BUSINESS (NEMA) $0.13921 $
LARGE BUSINESS (SEMA) $0.14761 $
LARGE BUSINESS (WCMA) $0.12866 $

Program rates will be in effect from September 2018 to January 2021.  
National Grid Basic Service rates change on May 1 and November 1 for Residential and Small Commercial accounts, and February 1, May 1, August 1 and November 1 for Large Commercial accounts.