Is Solar Worth It in Connecticut in 2026?
Yes — but the math changed. Here's the real picture.
The federal ITC expired December 31, 2025. Payback timelines got longer. But Connecticut's electricity rates — 50%+ above the national average — still make solar one of the best home investments available to CT homeowners. We'll show you the numbers, the scenarios where it makes sense, and the ones where it doesn't.
Why Connecticut's Electricity Rates Make Solar Uniquely Compelling
Every kilowatt-hour your solar system produces is worth more in CT than in almost any other state. That's the foundational math behind solar's case in Connecticut, independent of any tax credit.
Connecticut's electricity rates have risen consistently for over a decade. Eversource and United Illuminating both serve customers at rates well above the national average — driven by aging grid infrastructure, a heavy reliance on natural gas for generation, and New England's geographic isolation from the Midwest's low-cost power.
Historical rate growth in CT has averaged approximately 2.5–3% per year. That means a system producing $3,600 in savings in year one produces approximately $4,600 in savings in year ten — and the increasing savings help cover the tail end of a Smart-E Loan while accelerating payback.
The national average comparison:
A 10kW system producing 12,000 kWh/year saves approximately $3,600/yr in CT at $0.30/kWh. The same system in a $0.13/kWh state (national avg) saves only $1,560/yr. CT homeowners capture more than twice the annual value from the same solar system.
Eversource Rate History
| Year | Avg. Rate | Change |
|---|---|---|
| 2018 | $0.21 | — |
| 2019 | $0.22 | +NaN% |
| 2020 | $0.22 | +NaN% |
| 2021 | $0.23 | +NaN% |
| 2022 | $0.26 | +NaN% |
| 2023 | $0.28 | +NaN% |
| 2024 | $0.29 | +NaN% |
| 2025 | $0.30 | +NaN% |
| 2026 (est.) | $0.30–$0.31 | +NaN% |
The Real Math: A 10kW System in Connecticut, 2026
No inflated numbers, no expired credits included. This is what the investment actually looks like.
Why 9 Years?
$26,035 net cost ÷ $3,600 year-1 savings = 7.2 years at a flat rate. But we add 1.5–2 years of buffer for the Solar Energy Adjustment ($0.0402/kWh on new RRES netting projects) and realistic production variation across CT's weather. The 9-year figure is conservative on purpose — better to beat expectations than miss them.
Why $88,000 Over 25 Years?
Year-1 savings of $3,600, growing at 2.5%/year compound rate, summed over 25 years = approximately $122,000 gross. Minus net system cost of $26,035 = $95,965 net. We use $88,000 as the conservative figure after accounting for the Solar Energy Adjustment and a modest panel degradation rate of 0.5%/year.
On top of savings: home value
A 10kW system adds approximately $15,600 to your CT home's sale value (4.1% of CT median home price per Zillow). Under CT's permanent property tax exemption, that added value generates zero additional property tax — ever.
When Solar Is (and Isn't) Worth It in Connecticut
We'd rather tell you when solar doesn't make sense than push you into a decision that doesn't fit your situation.
Solar IS Worth It If…
You plan to stay in your home 7+ years
Payback in CT is approximately 9–12 years without the ITC. If you plan to be there through payback and beyond, the lifetime savings are substantial.
Your monthly electric bill is $150+
Above $150/month means you're spending $1,800+/year on electricity that could largely be eliminated. At $250/month, the ROI is compelling even at a 12-year payback.
Your roof is in good condition with 15+ years of life
Removing and reinstalling panels when you replace your roof costs $2,000–$5,000. A roof with 15+ years left lets your system run through most of its payback period without this additional expense.
You have a south or west-facing roof with minimal shading
CT's solar resource is strongest on south-facing surfaces with a 25–35 degree pitch. Minimal tree shading maximizes annual production and shortens payback.
You own an EV or plan to
EV charging at home roughly doubles your electricity usage, significantly increasing your RRES bill credits and shortening payback on a larger system sized to cover both home and vehicle.
Solar Might NOT Be Worth It If…
You're moving within 5 years
Solar adds home value (approximately 4.1% per Zillow) and the next buyer benefits from the system — but you may not recoup full installation cost at sale, particularly in a short holding period. Wait until the timeline extends or price the solar into your asking price carefully.
Your roof needs replacement in the next 3 years
Installing solar on a roof that needs replacement means paying $2,000–$5,000 to remove and reinstall panels when the roof is done. Coordinate the timing: replace the roof and install solar simultaneously for labor savings.
Heavy tree shading covers your south-facing surface
A heavily shaded roof can reduce solar production by 40–60%, extending payback to 18+ years and making the investment marginal. Get a shading analysis before committing; sometimes tree trimming changes the calculation.
Your credit is below 600 and you don't have cash
The best CT financing (Smart-E Loan) requires approximately 640+ credit. Without financing access, a PPA or lease reduces your total savings substantially. Work on credit first if possible.
Solar Increases Connecticut Home Values — Tax-Free
The home value increase from solar is a return that most financial analyses undercount.
Connecticut's property tax exemption under C.G.S. § 12-81(57) permanently excludes solar-added home value from taxable assessment. A system that adds $15,600 to your appraised value — which would ordinarily generate roughly $300–$500 in additional annual property taxes at CT's average mill rates — instead generates zero.
This means the home value increase is a pure gain: more equity, higher sale price, no offsetting tax cost. Over a 25-year hold, that's $7,500–$12,500 in property taxes you never pay on the added value — in addition to the $15,600 embedded in your home's sale price.
FAQ: Is Solar Worth It in CT?
Is solar worth it in Connecticut in 2026 without the federal tax credit?
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How much does solar save the average Connecticut homeowner?
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What is Connecticut's electricity rate and how does it compare nationally?
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Does solar increase home value in Connecticut?
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How long does solar take to pay back in Connecticut in 2026?
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When is solar NOT worth it in Connecticut?
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Find Out If Solar Makes Sense for Your Specific Home
Generic analysis only goes so far. Your roof orientation, electricity usage, and Eversource or UI rate class determine your actual payback. Get a free personalized analysis — 2 minutes, no spam, only SolarPro Lab contacts you.
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