Battery Storage in Connecticut

A home battery system in Connecticut costs $10,000-$18,000 installed before incentives. The CT Energy Storage provides up to $7,500 in state rebates, bringing the net cost to $5,000-$10,500. With the state average electricity rate at 23.3¢/kWh, battery storage helps offset expensive peak-hour grid electricity.

Connecticut homeowners enrolled in ConnectedSolutions earn $225/kW/year by dispatching stored energy during peak demand events. This demand response revenue can offset a significant portion of your battery investment over its lifetime, turning your battery into a revenue-generating asset in addition to backup power.

The federal residential energy storage tax credit (Section 25D) expired December 31, 2025. Homeowners purchasing batteries with cash or a loan no longer receive any federal tax credit. State, utility, and demand response programs are now the primary way to reduce your battery investment. Third-party owned systems (leases and PPAs) still qualify for 30% under Section 48/48E.

Connecticut averages 12 hours of power outages per year. A single 13.5 kWh battery powers essential loads for 10-12 hours, while two batteries provide whole-home backup. Browse the 8 utilities and 96 towns below for utility-specific battery incentives and rates.