Calculator

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 opting up to 100% Green Plus.

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

Program savings history: Download a chart (PDF) showing a historical comparison of the program price with Eversource’s Basic Service price for an average residential electricity customer in Cambridge.

To use the calculator:

Find your monthly electricity use (in kWh) on your Eversource electric bill and enter it into the box below. Or enter the median Cambridge residential use of 260 kWh, which will be an approximate estimate.

Your monthly electricity use: (Enter the number of kWh you use in any given month)

Cambridge Community Electricity Program Costs and Benefits
	Economy Green (option) Meets minimum Massachusetts renewable energy requirements	Standard Green (default) Includes 50% from MA Class I RECs	100% Green Plus (option) 100% from renewable energy sources (100% MA Class I RECs)
Program price ($/kWh)	$0.13820	$0.14810	$0.16820
Monthly electricity supply charges ($/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*
	All program participants contribute to the development of new renewable energy projects. Most recently, program participants contributed to the development of a new solar project in Cambridge that avoids approximately 191,000 libs of CO2 each year. This is equal to avoiding the emissions from driving 214,978 miles in a passenger vehicle.
Compare to Eversource's Basic Service price (the most recent 12-month average**)
	Residential	Small Business	Large Business
12-month average Eversource price ($/kWh)	$0.14507	$0.14378	$0.14685
Monthly electricity supply charges ($/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 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 seasonally, using an average price provides the most accurate comparison.

Savings cannot be guaranteed

Please note that, while the Cambridge Community Electricity Program offers the potential for savings when compared with Eversource’s Basic Service prices, there is no guarantee of savings. This is because Eversource’s prices change seasonally and future Eversource prices are unknown.

Calculator

To use the calculator:

Cambridge Community Electricity Program Costs and Benefits

Compare to Eversource's Basic Service price

Savings cannot be guaranteed