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 righthand corner below. The calculator will tabulate your supply charges for the month for each Portsmouth Community Electricity product option in comparison to current Rhode Island Energy Last Resort Service (Standard Offer) rates.

ENTER MONTHLY KWH:    
PORTSMOUTH COMMUNITY ELECTRICITY RATES
(May until November 2026 Meter Reads)
RESIDENTIAL PRODUCT OPTIONS RATE Monthly
Supply Cost
PORTSMOUTH STANDARD
Adds 5% Renewable Energy
$0.13519 $
PORTSMOUTH BASIC
No Additional Renewable Energy
$0.13287 $
PORTSMOUTH 50
Adds Renewable Energy to Total 50%
$0.13705 $
PORTSMOUTH 100
Adds Renewable Energy to Total 100%
$0.16025 $
RHODE ISLAND LAST RESORT SERVICE RATE
(Apr. 1 – Sep. 30, 2026)
RATE CLASS RATE Monthly
Supply Cost
RESIDENTIAL $0.11092 $