Calculator

Use the calculator below to compare your electricity supply costs (the cost of the actual electricity) to Eversource’s Basic Service costs, and to quantify the greenhouse gas benefits of participating in Sherborn Power Choice.

Please note: Your electricity delivery costs (the cost to bring electricity to your home or business) will not be impacted by your participation in Sherborn Power Choice.

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

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

Sherborn Power Choice Costs and Benefits
Sherborn Standard
+50% from renewable sources
 Sherborn Select
100% from renewable sources
 Sherborn Basic
Meets minimum renewable energy requirements
Program price ($/kWh) $0.14850 $0.14890 $0.14720
Monthly electricity supply charges ($/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*
* 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.

Compare to Eversource's Basic Service price

Eversource’s most recent 12-month average prices: While the program offers a long-term fixed price, Eversource’s Basic Service prices change every 6 months or less. As a result, comparing the program prices with the most recent 12-month average of Eversource’s prices can provide a more accurate comparison than comparing with only Eversource’s current price.
Residential Small business Large business
12-month average Eversource price ($/kWh) $0.15257 $0.15090 $0.15160
Monthly electricity supply charges ($/month)

Eversource’s current prices: Below are Eversource’s current Basic Service prices.
Residential and small business: February 1 – July 31, 2026.
Large business: May 1 – July 31, 2026.
Residential Small business Large business
Current Eversource price ($/kWh) $0.15629 $0.1503 $0.12541
Monthly electricity supply charges ($/month)

Savings cannot be guaranteed

Please note that, while Sherborn Power Choice offers the potential for savings when compared with Eversource’s Basic Service price, there is no guarantee of savings. This is because Eversource’s prices change every 6 months for residential and small business customers and every 3 months for large business customers, and future Eversource prices are unknown.