Is solar worth it in Connecticut?

What drives solar payback in Connecticut

Connecticut homeowners pay about 29.1¢/kWh, which is 10.7¢ above the national average. A rooftop here generates roughly 1200 kWh per kW each year — below the typical US figure. On exports, Connecticut offers partial / below-retail export credit: Some of the highest power prices in the US offset modest sunshine.

A worked example

For a Connecticut home with a $255/month power bill (typical household usage at Connecticut’s rate):

That nets out to a payback of about 13.1 years — shorter than simply dividing net cost by year-one savings, because power prices climb ~2.5%/yr so your savings grow each year. Year-one savings already reflect Connecticut’s below-retail export rate (you save full value on the power you use as it’s made, less on what you export), which is why they’re lower than the bill. Assumes 3.00 $/W installed before incentives and a typical 40% self-consumption; your actual cost, roof and usage will differ — adjust the calculator above.

Who supplies your power in Connecticut

Connecticut has two investor-owned utilities that serve the large majority of homes — Eversource Energy and United Illuminating (UI). Both operate under the same state-wide rules set by the Public Utilities Regulatory Authority (PURA), so your solar terms are essentially identical whichever one bills you. A handful of municipal utilities — Norwich Public Utilities, Groton Utilities, Wallingford Electric and Bozrah Light & Power among them — sit outside the state framework and run their own programmes, usually with less generous export rules. If you're served by a muni rather than Eversource or UI, check the terms locally before you plan a system.

What you’re paid for what you export

New Connecticut systems no longer get old-fashioned net metering. PURA's replacement, Residential Renewable Energy Solutions (RRES), makes you choose between two tariffs. Under 'Netting', power you use as it's generated offsets your bill at the retail rate, but any surplus left at the end of the month earns a lower, below-retail credit, squared up once a year. Under 'Buy-All', the utility takes every kilowatt-hour you produce at a fixed tariff and sells you back everything you consume at retail — simpler, but you give up the retail-rate value of your own daytime consumption. Both routes pay less for exports than imports cost, which tilts the maths towards an array sized to your own daytime load, and increasingly towards a battery. Think of it as Connecticut's cousin of California's NEM 3.0, not the grid-as-free-battery deal a few states still run.

Connecticut incentives & taxes in 2026

Connecticut's incentive is baked into the tariff: the per-kWh RRES rate you lock in when you enrol is the state's offer, rather than a separate cash rebate. On top of that sit two tax breaks — solar equipment escapes the 6.35% state sales tax, and residential renewable systems carry a 100% exemption from added property tax, so the panels won't inflate your assessment. The Connecticut Green Bank's Smart-E Loans provide low-interest financing if you'd rather spread the upfront cost. New systems get no broad residential SRECs.

The 30% federal credit ended on 31 December 2025 and can now only reach a homeowner indirectly through a lease or PPA. Check the current state and utility programs on DSIRE’s Connecticut list, then type any incentive into the calculator above to see how it shortens your payback.

What solar costs in Connecticut

$3.10 to $3.60 per watt is the realistic bracket in Connecticut, where Northeast labour, permitting and soft costs push prices a little past what most of the country pays — call it $25,000–$29,000 for an 8 kW array before incentives. A battery, which the below-retail export rates increasingly justify, adds several thousand more. Payback now rests entirely on the two tax exemptions and the RRES tariff.

The honest verdict for Connecticut

Around 29 cents per kilowatt-hour — among the highest electricity prices in the country — is the whole argument for Connecticut solar: every unit you generate and use yourself is a unit you don't buy at that price. Working against you are modest sunshine, about 1,200 kWh per kW a year, and export rates that sit below retail. So the game is self-consumption. Match the array to your daytime load, think hard about a battery, and a 9–13 year payback is realistic.

Driving electric — or heating electric — in Connecticut?

Your home electricity rate also sets what it costs to charge an EV and whether a heat pump beats a gas furnace. See the Connecticut EV charging cost and the Connecticut heat pump vs gas comparison.

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