Solar Panel Cost & Payback in Maine
Home solar in Maine pays back in a median 8.6 years across the 21 places we cover, at an average electricity price of 30.0¢/kWh and about $3.60 per watt installed. South Portland Gardens has the fastest payback (8.3 years).
Solar estimates for Maine cities and towns
Sorted by fastest payback. Each figure is for a system sized to an average Maine home (550 kWh/month).
| Place | kWh per kW | System | Cost | Payback | 25-yr savings |
|---|---|---|---|---|---|
| South Portland Gardens | 1,347 | 5.2 kW | $18,720 | 8.3 yrs | $48,456 |
| Portland | 1,319 | 5.2 kW | $18,720 | 8.4 yrs | $47,060 |
| South Portland | 1,319 | 5.2 kW | $18,720 | 8.4 yrs | $47,060 |
| Westbrook | 1,316 | 5.2 kW | $18,720 | 8.5 yrs | $46,910 |
| York Beach | 1,314 | 5.2 kW | $18,720 | 8.5 yrs | $46,810 |
| Sanford | 1,312 | 5.2 kW | $18,720 | 8.5 yrs | $46,711 |
| West Scarborough | 1,308 | 5.2 kW | $18,720 | 8.5 yrs | $46,511 |
| Biddeford | 1,296 | 5.2 kW | $18,720 | 8.6 yrs | $45,913 |
| Saco | 1,296 | 5.2 kW | $18,720 | 8.6 yrs | $45,913 |
| Wells Beach Station | 1,290 | 5.2 kW | $18,720 | 8.6 yrs | $45,614 |
| Lewiston | 1,286 | 5.2 kW | $18,720 | 8.6 yrs | $45,414 |
| Auburn | 1,286 | 5.2 kW | $18,720 | 8.6 yrs | $45,414 |
| Brunswick | 1,286 | 5.2 kW | $18,720 | 8.6 yrs | $45,414 |
| North Bath | 1,284 | 5.2 kW | $18,720 | 8.7 yrs | $45,314 |
| Lisbon | 1,278 | 5.2 kW | $18,720 | 8.7 yrs | $45,015 |
| Augusta | 1,263 | 5.6 kW | $20,160 | 8.8 yrs | $47,672 |
| Bangor | 1,241 | 5.6 kW | $20,160 | 8.9 yrs | $46,491 |
| Waterville | 1,241 | 5.6 kW | $20,160 | 8.9 yrs | $46,491 |
| Brewer | 1,241 | 5.6 kW | $20,160 | 8.9 yrs | $46,491 |
| Orono | 1,223 | 5.6 kW | $20,160 | 9.1 yrs | $45,524 |
| Presque Isle | 1,189 | 5.6 kW | $20,160 | 9.3 yrs | $43,698 |