Cumberland County · Maine
Solar Companies in
South Portland, ME
South Portland homeowners cut high ME electricity bills with solar and Central Maine Power net metering.
200 days
Sunny Days/Year
$1,400/yr
Avg. Annual Savings
10–14 years
Payback Period
$16,500
Avg. System Cost
About Solar in South Portland
Why South Portland Homeowners Are Going Solar
South Portland is a strong solar market in Cumberland County, Maine, located just across Casco Bay from Portland. Central Maine Power (CMP) serves South Portland and offers net metering for residential solar customers. Maine's high electricity rates make solar an excellent investment.
South Portland's suburban neighborhoods and proximity to Portland make it a prime solar market. Note: the 30% federal ITC expired December 31, 2025. Maine's Efficiency Maine rebate program add further value.
SunLynk connects South Portland homeowners with pre-vetted local solar installers who understand Cumberland County's permitting requirements and CMP's interconnection process.
Why go solar in South Portland?
- ME electricity rates over $0.22/kWh
- Efficiency Maine rebate up to $2,000
- CMP net metering
- Property and sales tax exemptions
- Average payback of 7–10 years
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50K+
Homeowners
4.8★
Avg Rating
500+
Installers
Available Incentives
Solar Incentives for South Portland Homeowners
Federal Solar Tax Credit -- Expired
Tax CreditThe 30% federal residential solar tax credit (Section 25D) expired December 31, 2025. Homeowners purchasing in 2026 no longer qualify. Solar leases and PPAs are the exception -- the installer can claim commercial credits and pass savings through in the monthly rate.
Efficiency Maine Rebate
RebateMaine's Efficiency Maine program offers rebates for residential solar installations.
CMP Net Metering
Net MeteringCentral Maine Power offers net metering for South Portland residential solar customers.
Property Tax Exemption
Tax ExemptionMaine exempts solar energy systems from local property tax assessments.
Sales Tax Exemption
Tax ExemptionSolar energy equipment is fully exempt from Maine's 5.5% sales tax.
Common Questions
Solar FAQ for South Portland Homeowners
Also Serving
Other Cities We Serve
State Incentives
Explore All Maine Solar Incentives
See the full list of state programs, rebates, and tax exemptions available to Maine homeowners.
Ready to go solar in South Portland?
Get matched with top-rated local installers — free quotes, no obligation.