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 Cambridge Community Electricity.

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

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)

Cambridge Community Electricity Costs and Benefits
100% Green
100% from new renewable sources
 Standard Green
75% from new renewable sources
 Economy
Meets minimum renewable energy requirements
Program price ($/kWh) $0.14900 $0.14480 $0.13770
Monthly electricity supply charges ($/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) $0.14975 $0.14808 $0.15184
Monthly electricity supply charges ($/month)

Eversource’s upcoming prices: Below are Eversource’s Basic Service prices that take effect February 1, 2026.
Residential and small business: February 1 – July 31, 2026.
Large business: February 1 – April 30, 2026.
Residential Small business Large business
Current Eversource price ($/kWh) $0.15065 $0.14466 $0.17329
Monthly electricity supply charges ($/month)

Savings cannot be guaranteed

Please note that, while Cambridge Community Electricity 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.