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

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

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

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

Watertown Electricity Choice Costs and Benefits

Standard Offering (default)
51% local renewable electricity (including the 16% required by State law)
100% Green (option)
100% local renewable electricity
Basic (option)
No additional renewable electricity beyond the 16% required by State law
Program price ($/kWh) $0.11494 $0.12718 $0.10654
Monthly electricity supply charges ($/month)

If you participate in the program for one year, this will be your approximate greenhouse gas reduction over the course of that year:

Greenhouse gas emissions avoided in one year compared to Eversource's Basic Service (lbs/year) 0
This is the same as driving this many fewer miles in one year* 0

Compare to Eversource's Basic Service price

(the most recent 12-month average**)
Residential Small Business Large Business
12-month average Eversource price ($/kWh) $0.11274 $0.10468 $0.09714
Monthly electricity supply charges ($/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 Eversource’s Basic Service price shown is the average of Eversource’s Basic Service prices for the past 12 months. Because Eversource’s fixed Basic Service prices change so frequently (every 6 months for residential and small business accounts and every 3 months for large business accounts), using an average price provides the most accurate comparison.

Savings cannot be guaranteed

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