Is Solar Worth It in Maine?
Yes — solar is financially attractive in Maine.
State incentives and net metering support payback in 7–10 years despite northern latitude.
Average Cost of Solar in Maine (2026)
The total cost of a residential solar system depends on system size, roof type, and installer pricing.
Typical 6–8 kW system:
- Average cost before incentives: $16,000 – $24,000
- Federal tax credit (30%): -$4,800 – $7,200
- Average net cost after federal credit: $11,200 – $16,800
The federal 30% Residential Clean Energy Credit is administered through the Internal Revenue Service.
Typical systems are 6–8 kW.
Solar Incentives in Maine
1. Federal Solar Tax Credit (30%)
30% of installation costs deductible from federal taxes.
2. Net Metering
Maine has net metering; excess generation earns credits.
3. State Programs
Maine has had solar rebate and incentive programs. Check DSIRE or state energy office.
Electricity Rates in Maine
Maine residential rates are often above the national average.
A typical Maine homeowner spends $1,600–$2,400 per year on electricity.
Solar can offset most or all of this cost.
Payback Period in Maine
Most homeowners see:
- Payback period: 7–10 years
- 25-year savings: $28,000–$58,000+
Savings depend on roof orientation, local utility rates, system size, and financing method.
Best Cities for Solar in Maine
Solar performs well statewide, but adoption is strongest in:
- Portland
- Lewiston
- Bangor
- South Portland
Suburban homes with south-facing roofs tend to achieve the highest ROI.
Is Solar Worth It in Maine? (Summary)
Solar makes the most sense if:
- You plan to stay 7+ years
- Your roof gets good sun
- Your bills exceed $130/month
- You qualify for the federal tax credit
Solar is a strong investment for most Maine homeowners.
How to Calculate Your Maine Solar Savings
Every home is different.
To get a personalized estimate, use the calculator on this page: enter your ZIP, monthly bill, and optional system size to see projected savings and payback.