Calculator

Use the calculator below to compare your electricity supply costs to those of National Grid’s Basic Service costs, as well as to quantify the environmental benefits of participating in the program.

Please note: Your electricity delivery costs (the cost to bring electricity to your home or business) are determined by National Grid and will not be affected by your participation in Westborough Power Choice.

To use the calculator, find your monthly electricity use on your National Grid bill and enter it into the box below (kWh).

(Enter the number of kWh you use in any given month)

Westborough Power Choice Costs and Benefits
Standard (default)
+20% from new renewable sources in the New England region
 100% Green (option)
100% from new renewable sources in the New England region
 Budget (option)
Minimum required from renewable sources
Program price ($/kWh) $0.14419 $0.16180 $0.13699
Monthly electricity supply charges ($/month)

Your environmental impact after one year of participation in the program will be equivalent to:
Avoiding this many pounds of CO2
Driving this many fewer miles*

Compare to National Grid’s Basic Service price

(the most recent 12-month average**)
Residential Commercial Industrial
12-month average National Grid price ($/kWh) $0.15078 $0.13910 $0.13635 $0.00000
Monthly electricity supply charges ($/month)

* This calculator calculates equivalencies using information provided by the EPA’s Greenhouse Gas Equivalencies Calculator. Greenhouse gas emissions avoided are calculating using the most recently available NEPOOL GIS emissions factor.

** Please note that the National Grid Basic Service price shown is the average of National Grid’s Basic Service prices for the past 12 months. Because National Grid’s fixed Basic Service prices change seasonally, using an average price provides the most accurate comparison.

Savings cannot be guaranteed

Please note that, while Westborough Power Choice seeks to provide a price that is equal to or lower than National Grid’s average Basic Service price, there is no guarantee of savings compared with National Grid’s Basic Service prices because future National Grid prices are unknown.