Solar panel cost and savings in Portland, Maine
Portland sits at 43.67°N, 70.25°W in Maine, United States. A typical residential solar system there is sized at 7.5 kW, laid out as 17 panels of 440 W each, mounted at a 40 degree tilt facing the sun's midday path.
Based on PVGIS solar radiation data for Portland's coordinates, that system produces an estimated 10,741 kWh in its first year. At the local electricity price of $0.18 per kWh (export $0.06 per kWh, daily supply charge $0.55), that generation is worth an estimated $1,213 a year to a household with typical usage patterns for a 3-person home.
Get a solar estimate for PortlandIncentives in Portland
1 incentive currently applies to a system installed in Portland:
Cost and payback
Before incentives, a typical system in Portland costs an estimated $16,456 to $26,180 installed. After the incentives above, the estimated net cost is $16,456 to $26,180, and the system pays back in about 19 years at today's local electricity price.
These figures assume a typical 3-person household with no pool, electric vehicle or electric heating, and installation in 2026. Incentive values are provisional estimates, last verified on the date shown against each scheme, and can change. Electricity prices and incentive amounts shown here are set at the country level except where an incentive's value is itself calculated from Portland's local solar zone, as noted above; only the production and payback figures are calculated specifically for Portland's coordinates.
Frequently asked questions
How much solar power can a typical home in Portland generate?
A typical 7.5 kW system (17 panels) in Portland produces an estimated 10,741 kWh a year, based on PVGIS solar radiation data for its coordinates.
What does solar cost in Portland after incentives?
Before incentives, a typical system costs $16,456 to $26,180 installed. After the incentives listed on this page, the estimated net cost is $16,456 to $26,180.
How long does solar take to pay back in Portland?
At local electricity prices, a typical system in Portland pays back in about 19 years, with estimated annual savings of $1,213.
What solar incentives apply in Portland?
Federal Residential Clean Energy Credit. Each is detailed above with its estimated value, eligibility and whether it is a national or local scheme.