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Get a Free QuoteScarborough solar panels cost $2.91–$3.19 per watt installed in 2026. A typical 9 kW system runs $27,450 at $0.27/kWh from CMP. The federal 25D residential tax credit is $0 (expired Dec 2025).
Cost Range
$2.91-$3.19
Per watt installed
System Cost
$27,450
9 kW avg system
Federal ITC
$0
25D expired 12/31/25
Payback
~9.4 yrs
Cash purchase est.
2026 Reality: The 30% federal solar tax credit (Section 25D) expired for homeowners on Dec 31, 2025. All Scarborough costs and payback figures reflect $0 federal credit. Third-party PPA/lease providers can still access the commercial ITC (Section 48). What this means for you →
A typical 9 kW solar system in Scarborough costs $27,450 before incentives (CMP territory). With no federal 25D tax credit available, your full out-of-pocket cost depends on state and local incentives. At $0.27/kWh, estimated annual savings are $2,916, putting payback at approximately 9.4 years before state incentives.
Gross Cost (9 kW)
$27,450
$3.05/W avg
Federal 25D ITC
$0
Expired 12/31/2025
Electric Rate
$0.27
CMP per kWh
Annual Savings
$2,916
~10,800 kWh/yr
System costs at the Scarborough average of $3.05/W. All prices are gross installed cost with no federal tax credit.
| System Size | Gross Cost | Annual Production | Annual Savings | Est. Payback |
|---|---|---|---|---|
| 5 kW | $15,250 | 6,000 kWh | $1,620/yr | 9.4 yrs |
| 8 kW | $24,400 | 9,600 kWh | $2,592/yr | 9.4 yrs |
| 10 kW | $30,500 | 12,000 kWh | $3,240/yr | 9.4 yrs |
| 13 kW | $39,650 | 15,600 kWh | $4,212/yr | 9.4 yrs |
Note: Payback estimates above are before state incentives and assume 10,800 kWh/year production per 9 kW (1,200 kWh/kW). Actual payback improves with state rebates, net metering credits, and property tax exemptions listed below.
Local factors that influence your installed price and timeline in Scarborough.
Scarborough is served by CMP at $0.27/kWh. Higher electric rates mean faster solar payback and greater lifetime savings.
Scarborough building permits take approximately 7 business days at $50-$100. Online permit submission is available, which can speed up approvals.
Roof age, material, and pitch affect installation complexity. Asphalt shingle roofs under 15 years old are ideal. Older roofs may need replacement before solar installation, adding $5,000-$15,000 to the project.
South-facing roofs with minimal shading produce the most energy. Tree coverage, neighboring buildings, and roof orientation all impact system production and overall return on investment.
State and local programs that reduce your net cost or accelerate payback. These apply on top of any utility-specific programs from CMP.
1:1 NEB rooftop
100% property tax exempt
5.5% sales tax exempt
Efficiency Maine HP $1K-$3K/unit
Federal 25D ITC: $0. The residential solar tax credit expired December 31, 2025. Homeowners who purchase with cash or a loan receive no federal credit.
When your solar panels produce more electricity than you use, the excess is exported to the grid. CMP credits your account based on Maine's net metering policy. These credits offset future electricity purchases, reducing your annual bill and improving your solar payback period.
Full Maine net metering guideMaine tax exemptions that save Scarborough homeowners money on their solar investment.
Maine exempts solar panel value from property tax assessments. Your home value increases from solar, but your property taxes do not go up. This effectively gives you free equity.
Solar equipment and installation labor are exempt from Maine's 5.5% sales tax. On a $27,450 system, that saves you $1,510.
From signed contract to permission to operate (PTO), expect 5-10 weeks total in Scarborough.
Engineering review, shade analysis, and system design.
Scarborough permit fee: $50-$100. Online submission available.
Panel mounting, wiring, inverter installation, and electrical connections.
Local inspection plus CMP interconnection approval.
System goes live and net metering begins. Total: 5-10 weeks.
Permit note: Fast-growing suburban town with newer housing stock. Many homes built with 200A panels. Marshland areas may need setback compliance but most residential is straightforward.
Estimate your total cost, savings, and payback based on your home's specifics.
No federal tax credit (25D expired). Maine solar economics rely on net energy billing (1:1 retail) + property and sales tax exemptions.
Third-party PPA/lease still benefits from Section 48 ITC (30%). Ask your installer about $0-down options.
Common questions about solar panels in Scarborough, ME.
Solar panels in Scarborough cost $2.91-$3.19 per watt installed in 2026. A typical 9 kW system runs $27,450 before incentives. The federal 25D residential tax credit expired December 31, 2025.
See exactly what solar costs for your home in Scarborough. Custom system design, local incentive analysis, and transparent pricing from CMP territory experts.