Groton Electric Light Department

Groton Electric Light Department serves customers in Groton in Massachusetts with a residential electricity rate of $0.16 per kWh. This is 5% below the national average of $0.168/kWh, though solar still delivers strong returns with today’s lower installation prices.

At current rates, a typical Groton Electric Light Department household using 900 kWh per month spends approximately $1,728 per year on electricity. An 8 kW solar system can offset most or all of that usage, saving an estimated $1,536 annually and $56,001 over the 25-year life of the system. With Massachusetts incentives of $320, the net system cost drops to $25,840, with a payback period of just 16.8 years.

As a municipal utility, Groton Electric Light Department sets its own rates and policies independently, separate from Mass Save and ConnectedSolutions programs that serve investor-owned utility customers. However, Groton Electric Light Department offers its own local rebate programs. Groton Electric Light Department offers net metering, allowing solar customers to receive credits for excess energy sent back to the grid. Heat pump rebates of up to $500 are also available.

The federal residential solar tax credit (Section 25D) expired at the end of 2025. State and utility-level incentives are now the primary financial benefits for homeowners going solar. NuWatt Energy handles the entire process from system design through permits and Groton Electric Light Department interconnection, ensuring you receive every available rebate.