MaineSolar Panel Costs & Savings
Maine averages 3.8 hrs of peak sun per day with an average payback period of 7.5 years. Homeowners can save $40,200 over 20 years.
Peak Sun Hours
3.8 hrs
per day
6kW System Cost
$19,800
before incentives
Payback Period
7.5 yrs
average
20-Year Savings
$40,200
estimated
Solar Cost Breakdown in Maine
| Item | Amount |
|---|---|
| 6kW System Cost ($3.3/W) | $19,800 |
| Federal Tax Credit (30%) | -$5,940 |
| Net Cost | $13,860 |
Net Metering
Full Net Metering
Electricity Rate
26.37¢/kWh
Avg Monthly Bill
$113/mo
Solar Incentives in Maine
Federal Solar Investment Tax Credit (ITC)
The federal ITC allows homeowners to deduct 30% of solar installation costs from federal taxes. Available for systems installed through 2032, stepping down to 26% in 2033 and 22% in 2034.
Solar Potential by ZIP Code in Maine
Compare With Other States
More Data for Maine
Frequently Asked Questions
How much do solar panels cost in Maine?
A typical 6kW solar system in Maine costs approximately $19,800 before incentives. After the 30% federal tax credit ($5,940), the net cost is approximately $13,860.
How long does solar take to pay for itself in Maine?
The average solar payback period in Maine is 7.5 years, faster than the national average of 9.4 years. After payback, homeowners enjoy free electricity for the remaining system life.
Does Maine have net metering?
Maine has full net metering. Homeowners receive full retail rate credits for excess solar energy sent to the grid.
How much sun does Maine get for solar?
Maine averages 3.8 peak sun hours per day, which is 0.7 hours below the national average. A 6kW system produces approximately 8,322 kWh per year.
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Data verified March 2026 · Source: NREL, DSIRE, EIA