Groton Utilities

Groton Utilities serves customers in Groton in Connecticut with a residential electricity rate of $0.19 per kWh. This is 11% above the national average of $0.168/kWh, meaning solar savings are especially significant for customers looking to reduce their energy costs.

At current rates, a typical Groton Utilities household using 900 kWh per month spends approximately $2,023 per year on electricity. An 8 kW solar system can offset most or all of that usage, saving an estimated $1,798 annually and $65,557 over the 25-year life of the system. With Connecticut incentives of $2,000, the net system cost drops to $24,544, with a payback period of just 13.7 years.

As a municipal utility, Groton Utilities sets its own rates and policies independently. Groton Utilities offers net metering, allowing solar customers to receive credits for excess energy sent back to the grid. The utility offers a solar rebate of $1.00 per watt up to $10,000. Heat pump rebates of up to $4,000 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 Utilities interconnection, ensuring you receive every available rebate.

$1,000-$2,000