Your Complete Guide to Solar in Connecticut

Connecticut has the 4th highest electric rates in the country. That means bigger savings when you go solar — and the RRES program makes it easier than ever.

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Why Connecticut Is a Top State for Solar

Connecticut homeowners pay 27–32 cents per kWh — roughly 70% above the national average and the 4th highest rate in the country. Whether you're an Eversource customer in Hartford or a United Illuminating customer in Bridgeport, those sky-high bills translate directly into bigger solar savings. Over 106,830 CT homes have already made the switch, putting the state at 10.7% solar adoption.

Through the RRES program, the property tax exemption (up to 15 years), the 6.35% sales tax exemption, and the CT Green Bank Smart-E Loan, Connecticut makes it possible to go solar for $0 upfront and start saving from day one. And because the federal 25D residential tax credit has expired, the smartest path is a solar lease or PPA where the Section 48 ITC savings are built right into your lower monthly rate — no tax forms, no refund to wait for.

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2019

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Frequently Asked Questions

What solar incentives does Connecticut offer?+
Connecticut offers the RRES program (with Buy-All and Netting tariff options), a property tax exemption for up to 15 years, a 6.35% sales tax exemption on solar equipment, the CT Green Bank Smart-E Loan (up to $50,000 at 4.49–6.99% APR), and the Energy Storage Solutions program for battery storage. The federal 25D residential credit has expired, but lease and PPA providers pass their Section 48 ITC savings through to you as lower monthly rates.
How much does solar cost in Connecticut?+
The average Connecticut solar installation runs $2.79 to $2.98 per watt before incentives. A typical 11kW system costs roughly $30,700 pre-incentive. Most homeowners go solar for $0 upfront through a lease or PPA, where the federal credit savings are already built into your monthly rate.
Which utility company do I have — Eversource or United Illuminating?+
Most Connecticut homeowners are served by Eversource (~1.2 million customers) or United Illuminating (~325,000 customers). Hartford, Stamford, and most of the state are Eversource territory. New Haven, Bridgeport, and 17 surrounding towns are in United Illuminating territory. Both utilities participate in the RRES program for solar customers.
Does Connecticut still have net metering?+
Traditional 1:1 net metering closed to new residential enrollees in 2022. Existing net metering customers are grandfathered until December 31, 2039. New solar customers enroll in the RRES program — either the Netting Tariff (use solar on-site and export excess) or the Buy-All Tariff (sell all production at $0.3289/kWh, locked in for 20 years).
Is Connecticut a good state for solar energy?+
Absolutely. Connecticut's 4th-highest electric rates in the nation mean some of the biggest savings in the country when you go solar. With 10.7% of homes already using solar and a zero-carbon electricity target by 2040, CT is one of the strongest solar markets in the Northeast. The typical payback period is just 7–10 years, and even faster in United Illuminating territory.

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