Connecticut trades a state credit for a genuinely stable policy environment
No state credit, but a durable incentive environment
Connecticut has never offered a standalone state income tax credit for solar. What it does have is described by several sources as one of the most stable solar policy environments in the country, with the Residential Solar Investment Program running in successive blocks since 2015 and no current movement toward the kind of net metering rollback California implemented with NEM 3.0. Compare against the Massachusetts incentive estimator for a neighboring state that took a different approach.
RRES replaced net metering with something arguably better, minus one new charge
The Residential Renewable Energy Solutions program replaced Connecticut's original net metering policy for new applicants. Under its Netting Tariff option, exported power is credited at the full retail rate, and unused credits roll over indefinitely instead of expiring at the end of a billing cycle or year. What's new for 2026 enrollees specifically: PURA authorized a Solar Energy Adjustment of $0.0402 per kWh, billed against your system's total production rather than just what you export, which works out to roughly $520 a year on a typical 11 kW system. This is a genuine offsetting cost that some solar proposals leave out of their savings projections, so factor it in. Homeowners who installed solar before December 31, 2021 remain grandfathered into the old net metering structure until 2039, and enrollees before this 2026 change keep the prior, far smaller $0.005 per kWh adjustment rate for their full term, so check your interconnection date if you're not sure which policy applies to you. Check your ongoing production income with the SREC value estimator as well.
Two tax exemptions worth confirming locally
Connecticut exempts solar equipment from its 6.35% state sales tax under Connecticut General Statutes 12-412(116), which a properly registered installer should apply automatically. The property tax exemption works differently: state law allows municipalities to offer it, and most towns do, but it's technically a local option rather than a blanket statewide guarantee. Confirm with your specific town's assessor before building it into your long-term projections. Your rebate total changes what a loan costs each month, and the combined loan and rebate timing tool shows that payment once you enter both figures.
High electricity rates make the math work harder in your favor
Connecticut's electricity rates run well above the national average, though PURA approved rate decreases for both major utilities effective May 1, 2026, easing that gap somewhat. Even with the decrease, Connecticut's rates remain well above the national average, which makes the full retail Netting Tariff credit worth more in absolute dollar terms than the same policy would be worth in a lower-cost state, net of the new Solar Energy Adjustment discussed above. Run your numbers through the federal ITC calculator as well to see your complete 2026 picture across all levels.