Calculator

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 for each Charlton CEA product option in comparison to National Grid’s Basic Service.

ENTER MONTHLY KWH:    
PRODUCT OPTIONS RATE Monthly
Supply Cost
CHARLTON CEA
$0.15540 $
CHARLTON 100% LOCAL GREEN
100% Local Renewable Energy
$0.18358 $
NATIONAL GRID RATES
May through October 2023
RESIDENTIAL $0.14115 $
SMALL COMMERCIAL $0.13393 $
LARGE BUSINESS (WCMA) $0.11078 $

Disclaimer: Charlton CEA 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.

Program rates will be in effect from January 2020 to December 2022. 
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 Industrial accounts.