2026 · No Federal Tax Credit · NREL + EIA Data
Solar Panels in Connecticut: Cost, Payback & ROI (2026)
Is solar still worth it in Connecticut after the 30% federal tax credit expired? These pre-computed estimates use NREL PVWatts production data and current 29.5¢/kWh Connecticut electricity rates for a typical home using 900 kWh/month.
Section 25D (30% federal solar tax credit) expired December 31, 2025
All numbers below reflect 2026 math with no federal residential credit. State incentives, where applicable, are noted in the section below.
Connecticut Solar at a Glance
Based on a 900 kWh/month home ($266/mo electric bill at 29.5¢/kWh), 100% offset, no state rebate applied.
8.6 kW
For 900 kWh/month home
$25,488
At $2.95/W (LBNL 2024 avg)
7.5 years
Without state rebate
$3,186
Estimated annual savings
$101,886
Cumulative before rebate
$76,398
Savings minus system cost
29.5¢/kWh
very high vs. 16.0¢ U.S. avg · EIA 2025
1,250 kWh/kW/yr
limited · 3.8 peak sun hrs/day · NREL PVWatts
Is Solar Worth It in Connecticut in 2026?
Connecticut has some of the highest electricity rates in the lower 48 states at 29.5¢/kWh, driven largely by New England's constrained natural gas transmission infrastructure. Solar payback periods are typically strong despite lower-than-average sun. Energize CT — the state's energy efficiency and clean energy initiative — offers financing and rebates that can materially reduce upfront cost.
For a typical Connecticut home consuming 900 kWh per month, our calculation shows a 8.6 kW system needed for 100% offset. At the current national average installed cost of $2.95/W (LBNL Tracking the Sun 2024), that's $25,488 gross before any state rebates. Year-one savings of $3,186 grow each year as electricity rates escalate — the model assumes 2.5%/year (EIA AEO 2024).
The 7.5 years payback period is solid — at or below the national average of 8–12 years. Over 25 years — the standard warranty period for most premium panels — a Connecticut homeowner following this profile would save an estimated $101,886 total, for a net benefit of $76,398 after recovering the system cost.
Year-by-Year Savings Snapshot: First 10 Years
Based on 8.6 kW system, 0.5%/yr degradation, 2.5%/yr rate escalation, no state rebate.
| Year | Production (kWh) | Annual Savings | Cumulative |
|---|---|---|---|
| Year 1 | 10,800 | $3,186 | $3,186 |
| Year 2 | 10,746 | $3,249 | $6,435 |
| Year 3 | 10,692 | $3,314 | $9,749 |
| Year 4 | 10,639 | $3,380 | $13,129 |
| Year 5 | 10,586 | $3,447 | $16,576 |
| Year 6 | 10,533 | $3,515 | $20,091 |
| Year 7 | 10,480 | $3,585 | $23,677 |
| Year 8✓ Paid off | 10,428 | $3,657 | $27,333 |
| Year 9 | 10,375 | $3,729 | $31,063 |
| Year 10 | 10,324 | $3,803 | $34,866 |
System cost to recover: $25,488. Table shows savings without state rebate applied. Use the interactive calculator to enter your actual bill and any rebate.
Solar Incentives in Connecticut (2026)
The Connecticut Green Bank offers low-interest and zero-interest financing programs for solar, and Eversource and UI customers have access to the Residential Solar Investment Program.
- CT Green Bank zero-interest Smart-E loans
- Residential Solar Investment Program (RSIP) incentives via utilities
- Property tax exemption on solar added value
- Sales tax exemption on residential solar systems
Incentive programs change frequently. Verify current offerings at dsireusa.org or directly with your utility before making any purchasing decision.
How We Calculate Connecticut Solar ROI
These estimates use the same methodology as our interactive solar ROI calculator, applied to Connecticut-specific data:
System cost
$2.95/W installed
LBNL Tracking the Sun 2024
Solar production
1,250 kWh/kW/yr
NREL PVWatts v8
Electricity rate
29.5¢/kWh
EIA Residential Rates 2025
Rate escalation
2.5%/year
EIA Annual Energy Outlook 2024
Panel degradation
0.5%/year
NREL (Jordan & Kurtz, median)
System lifetime
25 years
Standard warranty period
No Section 25D (federal residential solar credit) is included — it expired December 31, 2025. State incentives are not reflected in these pre-computed figures; use the interactive calculator to enter specific rebate amounts.
Calculate With Your Actual Numbers
The figures above use statewide averages. Enter your actual monthly bill, any Connecticut rebate amounts, and your offset target in our interactive calculator for a personalized estimate.
Frequently Asked Questions — Solar in Connecticut
Compare Other States
Estimates are based on NREL PVWatts v8 production data, EIA 2025 electricity rates, and LBNL 2024 installed cost benchmarks. Actual savings vary by roof pitch, shading, utility rate structure, and local permit costs. This is not financial advice. Consult a licensed solar installer before making any purchasing decision.