The two numbers that matter
Electricity price: 32.4¢/kWh, above the national state average of 19.3¢. Every kilowatt-hour your panels make replaces one you'd buy at this price, so higher prices mean faster payback.
Sunshine: 4.5 peak sun hours a day, less than the state average of 5.0. Each kW of panels here makes roughly 1,295 kWh a year after real-world losses.
Estimates by bill size
| Monthly bill | Usage | System | Cost | Year-1 savings | Payback | 25-yr net |
|---|---|---|---|---|---|---|
| $100/month | 309 kWh | 2.6 kW | $7,720 | $920 | 8 yrs | $23,580 |
| $150/month | 463 kWh | 3.9 kW | $11,580 | $1,380 | 8 yrs | $35,360 |
| $250/month | 772 kWh | 6.4 kW | $19,300 | $2,300 | 8 yrs | $58,940 |
Assumes $3.00/W installed, 90% usage offset, no federal tax credit, 3% yearly price rise and 0.5% yearly panel degradation. Sources: US Energy Information Administration (EIA), Electric Power Monthly, residential average price, July 2026; NREL PVWatts / NSRDB, average peak sun hours for each state's largest city.
Incentives in maine.html
No major statewide solar tax credit as of October 2026. Many states exempt solar from property or sales tax, and some utilities offer rebates. Search DSIRE (dsireusa.org) for your ZIP code.
The US 30% Residential Clean Energy Credit ended for homeowner systems installed after December 31, 2025. Leased systems and PPAs may still be priced with a federal business credit. See solar incentives in 2026.
Plug-in and balcony solar in maine.html
Legal. Maine's LD 1730 (signed April 2026) allows up to 1,200 W; you can self-install up to 420 W, while 420–1,200 W needs an electrician.
Estimate a kit with the plug-in solar calculator.
Next steps
- Check your actual rate on your bill. Many utilities in maine.html charge more or less than the state average.
- Run your own numbers in the savings calculator.
- Get at least three quotes and compare the price per watt. Use our quote checklist.
Questions about solar in maine.html
Is solar worth it in maine.html?
Strong case. Rooftop solar pays back quickly here for most sunny, owner-occupied homes. Get at least three quotes.
How much does a solar system cost in maine.html?
At about $3.00 per watt before incentives, a 3.9 kW system costs roughly $11,580. Local quotes vary with roof, equipment and installer.
How many panels would a maine.html home need?
For a $150 monthly bill, about 3.9 kW, or roughly 2.3 panels per kW using 430 W panels. Use the system size calculator for your exact usage.