Best Cities for Solar in Maine

Maine has 4 tracked locations with an average of 3.7 hrs/day of peak sun and $1,756/year in average solar savings. The best location is Acton (04001) with $1,804/year in savings.

4

tracked locations

3.7 hrs

avg peak sun/day

$1,756

avg annual savings

7.5 yrs

avg payback

Solar Data by ZIP Code in Maine

City / ZIP	Peak Sun	6kW Cost	Annual Savings	Payback
Acton 04001	3.8 hrs	$19,800	$1,804/yr	7.7 yrs
Portland 04101	3.7 hrs	$19,800	$1,756/yr	7.9 yrs
Augusta 04901	3.7 hrs	$19,800	$1,756/yr	7.9 yrs
Bangor 04401	3.6 hrs	$19,800	$1,709/yr	8.1 yrs

Explore More

Maine Solar Overview Compare States Solar Calculator Maine Incentives

Data verified March 2026 · Source: NREL, DSIRE, EIA