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, Nov 1 – Apr 30, 2020
RESIDENTIAL $0.13982 $
SMALL COMMERCIAL $0.12184 $
LARGE COMMERCIAL (NEMA) $0.12189 $
LARGE COMMERCIAL (SEMA) $0.12226 $
LARGE COMMERCIAL (WCMA) $0.11872 $

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.


Disclaimer: A goal of the CEA program is to produce savings for customers, but savings cannot be guaranteed compared to the utility’s basic service rate which changes every six months for Residential and Small Commercial customers, and every three months for Large Commercial customers. The aggregation program seeks to provide price stability and average savings over the full term of the program, but because future basic service rates are not known, there is no guarantee of savings.