CT Residential Solar Investment Program

The CT Residential Solar Investment Program is a rebate tracked in the federal DSIRE database as one of Connecticut's solar policy levers. Eligibility is scoped to residential customers, with a stated benefit of Upfront incentive, varies by class. The program does not carry a scheduled sunset in DSIRE, though appropriations and enabling legislation can still be revised year to year. Like every state-level incentive, it is designed to stack on top of the federal 30% Investment Tax Credit rather than replace it.

Layered onto Connecticut's underlying economics, this matters more than it might look in isolation. The state averages 4.1 kWh/m²/day of usable sunlight and residential rates of 28.5¢/kWh, producing an estimated 7,183 kWh/year and $2,047 in annual utility offset on a typical 6kW system costing $18,300. Without incentives that baseline already implies a 8.9-year simple payback — every dollar this rebate delivers compresses that payback further and improves 25-year net returns, currently modeled at roughly $32,875 before accounting for the CT Residential Solar Investment Program itself.

This program is not the only option. Connecticut has 5 solar incentive programs indexed in DSIRE, including adjacent options like CT Solar Property Tax Exemption, CT Green Bank Smart-E Loan, Connecticut ZREC/LREC Program. The state's net metering policy is classified as full, which governs how excess generation is credited and often determines whether a given program is worth claiming for a specific household. Before applying, verify current terms on the official program page, confirm your utility participates, and consult a qualified tax professional about how state credits interact with the federal ITC on your return.