Solar calculator for Connecticut
Panels, system size, cost and payback for Connecticut, from your own power bill.
The average Connecticut home uses 695 kWh a month and pays 28.8 cents per kWh, which puts Connecticut at among the highest electricity prices in the country, which is what makes solar pay back faster. Winter heating shapes the bill in Connecticut, and winter is when panels make the least, so a bill that looks big in January does not map cleanly to a bigger array. A south-facing fixed array there makes about 1,291 kWh per installed kW a year, and the worst winter month still gets 2.13 peak sun hours a day. Drop in your own bill below and the numbers on this page are replaced by yours.
A worked example for Connecticut
Take the average home: 695 kWh a month, which is 8,340 kWh a year, at 28.8 cents per kWh (EIA, 2024 residential averages, as of 2026-11). Sized to cover all of that use, the tool returns 6.5 kWdc and 16 panels, needing about 336 square feet of roof. The installed estimate is $16,086 (national median, EnergySage H2 2025), yearly savings are about $2,402, and simple payback is 6.7 years, with no incentive applied.
Sun and yield in Connecticut
We use 1,291 kWh per installed kW per year for Connecticut, from NREL PVWatts v8 for the state's largest city at a 20 degree south-facing tilt (via TheGreenWatt, as of 2026-11). The darkest month averages 2.13 peak sun hours a day, which matters if you plan to go off-grid or size a battery. A different roof angle or heavy shade changes this, so treat it as a starting point.
Incentives
The 30% federal tax credit ended for homeowner purchases after December 31, 2025, so none is applied here. See the tax credit guide. Look up Connecticut and your own utility for net metering terms and any local programs before relying on a payback number.
Planning estimate. Permits, interconnection approval and a licensed electrician are required for grid-tied systems.
Questions
How many solar panels does a Connecticut home need?
The average Connecticut home uses 8,340 kWh a year (EIA 2024). At about 1,291 kWh per installed kW, covering all of it takes 6.5 kWdc, or 16 panels. Your own bill will move that up or down.
How much does solar cost in Connecticut?
For the average-home example the installed estimate is $16,086 at the national median of $2.49 per watt (EnergySage, H2 2025, as of 2026-11). We have no sourced Connecticut price multiplier, so local quotes will differ.
Is there a federal solar tax credit in Connecticut?
The 30% federal tax credit ended for homeowner purchases after December 31, 2025. Check your state, utility and local programs separately.
Where does the Connecticut sun figure come from?
1,291 kWh per kW per year and 2.13 winter peak sun hours come from NREL PVWatts v8 runs for Connecticut's largest city, compiled by TheGreenWatt (as of 2026-11). Real yield varies across the state.
Is my bill uploaded?
No. Your bill is read in your browser and never uploaded.