Price calculator

This calculator makes it easy to compare Greenfield Light & Power with Eversource’s average and current prices. The goal of Greenfield Light & Power is to provide savings when compared with the average of Eversource’s changing prices, not to beat each of Eversource’s 6-month pricing periods.

The calculator also quantifies the environmental impact of participating in Greenfield Light & Power.

Greenfield Light & Power impacts only your electricity supply price. Eversource’s delivery charges are not impacted by the program.

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)

Greenfield Light & Power Costs and Benefits
Budget Green
100% renewable electricity from a mix of sources both within and outside of New England
 Local Green
100% renewable electricity from new sources in the New England region
Program price ($/kWh) $0.13090 $0.15644 $0.00000
Monthly electricity supply charges ($/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) $0.12606 $0.12355 $0.12706
Monthly electricity supply charges ($/month)

Eversource’s current prices: Below are Eversource’s current Basic Service prices.
Residential and small business: August 1, 2025 – January 31, 2026.
Large business: November 1, 2025 – January 31, 2026.
Residential Small business Large business
Current Eversource price ($/kWh) $0.13493 $0.13271 $0.16382
Monthly electricity supply charges ($/month)

Savings cannot be guaranteed

Please note that, while Greenfield Light & Power 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 every 6 months or less and future Eversource prices are unknown.