Is solar worth it in Connecticut?

Connecticut gets moderate sunshine — about 4 peak sun hours a day — and residential electricity runs around $0.28/kWh. For a typical $150-a-month power bill, that points to roughly a 5.5-kW system costing about $16,512 — with no federal tax credit, which ended for installations completed after December 31, 2025 — paying for itself in about 9.2 years and netting on the order of $44,853 over 25 years. Your own numbers will differ — the calculator above uses your real bill.

Connecticut doesn't get the most sun, but its very high electricity rates mean every kWh you offset is worth a lot — so payback can still be quick. State incentives and a tariff program further help.

What changes the math in Connecticut

• Your electricity rate — the more you pay per kWh, the more each solar kWh saves you. Connecticut sits at about $0.28.
• Sun hours — more sun means a smaller, cheaper system covers the same usage. Connecticut averages ~4 hours.
• Net metering / buyback — how your utility credits power you export swings the payback; check your specific utility's current terms.
• Install cost — quotes vary by installer and roof; the calculator defaults to a typical $/watt you can override.

Connecticut: the rules that actually decide your payback

Who your utility is, and why it matters

Eversource and United Illuminating serve nearly all of Connecticut, and both now operate under PURA's Residential Renewable Energy Solutions program rather than classic net metering. The program offers two tracks — Netting and Buy-All — with tariff rates updated for projects enrolling in 2026, so the first question for any quote is which track and which vintage of rates it models.

What your exported power is worth

Under the Netting track, exports credit at retail rate with monthly rollover, but 2026 enrollees face a Solar Energy Adjustment of about 4.02¢/kWh applied to total production — a non-bypassable charge that meaningfully trims the effective export value. The Buy-All track sells all production to the utility at a set rate while you buy all consumption at retail; which wins depends entirely on your self-consumption profile. Pre-existing net-metering customers are grandfathered until December 2039.

The Connecticut incentive layer

Connecticut's incentive landscape is the RRES structure itself rather than a tax credit; there is no meaningful state income-tax credit for panels. The sales-tax exemption on solar equipment remains, keeping the installed price free of the state's 6.35% levy — automatic, not something to file for.

Battery and self-consumption

Connecticut's high retail rates (among the highest we cover) plus the Solar Adjustment charge make self-consumption genuinely valuable here. A battery that displaces evening grid purchases at full retail earns more per shifted kilowatt-hour than in almost any other state, and New England's storm-driven outages make the resilience case on its own.

What to check on a Connecticut quote

• Ask which RRES track the quote models — Netting and Buy-All produce very different bills from identical hardware, and the 2026 tariff rates differ from 2025's.
• Confirm the Solar Energy Adjustment (about 4.02¢/kWh on total production for 2026 enrollees) is included in the payback model, not silently omitted.
• If you already have solar under legacy net metering, confirm your grandfathering date and what happens if you expand the system — modifications can forfeit the legacy terms.
• Ask the application fee amount in writing; PURA updated the fee schedule for 2026 enrollees.

Programme and tariff detail above is summarised from Connecticut PURA — Residential Renewable Energy Solutions tariff. Last reviewed 20 August 2026 by SolarDime editorial. These rules change — confirm the current terms with your utility and the regulator before you sign.