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Biddeford solar costs $2.95-$3.19/W in 2026, averaging $27,630 for a 9 kW system. CMP provides 1:1 NEB credits at $0.27/kWh, generating ~$2,916/year. No federal 25D ITC. Property tax 100% exempt. Sales tax status under review. Payback: ~15-16 years (cash) or day-1 savings (PPA).
$3.07/W
Avg Cost
$27,630
9 kW System
$0.27
CMP Rate (/kWh)
$2,916
NEB/Year
~15 yr
Payback
Biddeford solar installation costs $2.95-$3.19 per watt in 2026. As a southern coastal city just 20 minutes from Portland, Biddeford benefits from the same strong installer market while offering slightly more affordable housing stock for solar investment.
| Component | Cost Range |
|---|---|
| Solar panels (9 kW) | $9,900-$11,700 |
| Inverter(s) | $2,500-$4,000 |
| Mounting and racking | $2,000-$3,000 |
| Electrical work and wiring | $2,500-$3,500 |
| Permitting and interconnection | $500-$1,000 |
| Labor and installation | $5,000-$7,000 |
| Design, engineering, overhead | $3,000-$4,500 |
| Total (before incentives) | $26,550-$28,710 |
The Section 25D residential solar tax credit expired December 31, 2025. Biddeford homeowners pay the full system cost with $0 federal tax credit in 2026.
100% property tax exemption statewide (solar adds no property tax). Sales tax exemption is unverified — verify with your installer.
Biddeford has a diverse housing stock — from historic mill conversions downtown to newer suburban developments near the turnpike. System sizes range from 5 kW for smaller homes or condos to 12 kW for larger properties.
| System Size | Panels | Cost Range | Annual NEB | Payback |
|---|---|---|---|---|
| 5 kW | 11-12 | $14,750-$15,950 | $1,350 | ~15 yr |
| 8 kW | 18-19 | $23,600-$25,520 | $2,160 | ~15 yr |
| 9 kW | 20-21 | $26,550-$28,710 | $2,916 | ~15-16 yr |
| 12 kW | 27-28 | $35,400-$38,280 | $3,240 | ~15 yr |
* 9 kW highlighted as the Biddeford average. All costs before incentives. NEB based on CMP $0.27/kWh.
10,800
kWh/year (9 kW system)
$2,916
Annual NEB credits
~15 yrs
Payback (cash purchase)
System cost: $27,630
Year 1 NEB value: $2,916
Rate increase (est): 4-5%/year
Payback (cash): ~15-16 years
25-year savings: $50,000-$75,000+
ROI after 25 years: 90-170%
NuWatt's Propel financing offers $0 down with a fixed monthly payment lower than your CMP bill. Unlike a lease, you own the panels by year 5. See if you qualify at /maine/propel-solar
Maine's Net Energy Billing program gives Biddeford homeowners 1:1 retail-rate credits for every kilowatt-hour of solar electricity exported to the CMP grid. This is one of the most favorable net metering policies in New England.
Learn more about Maine's net metering in our Maine NEB Guide.
The 15-16 year payback on a cash purchase is too long for many Biddeford homeowners. Propel Solar solves this — $0 down, a fixed monthly payment lower than your CMP bill, and full ownership by year 5.
A third-party owner installs solar on your roof and captures the 30% Section 48 ITC — a credit no longer available to homeowner purchases.
Your monthly solar payment is fixed and lower than your average CMP bill. No escalators. Predictable costs while CMP rates keep rising.
Full ownership transfers to you at year 5. American-made Silfab 440W panels. Free maintenance during the lease period.
Cash purchase: $27,630 upfront, 15-16 year payback, $0 federal credit.
Propel: $0 down, save from day 1, own by year 5, 30% built-in discount.
Biddeford, Saco, Old Orchard Beach, Kennebunk, Kennebunkport, Wells, York, Kittery — all CMP territory.
Biddeford is a southern Maine coastal city of approximately 22,000 experiencing a remarkable revival. The historic Pepperell and Laconia mill complexes have been transformed into vibrant mixed-use spaces, while new residential development continues along the Saco River and coast. This blend of old and new creates diverse solar opportunities.
$27,630
$0 Down
$0 Down
Compare all options in our Maine Cash vs Loan vs Lease Guide.
All southern Maine communities near Biddeford are in CMP territory with the same rates and NEB credits. Solar costs are similar across the region.
CMP | $0.27/kWh
Twin city with Biddeford. Same CMP territory and solar pricing.
CMP | $0.27/kWh
CMP territory. Seasonal community with year-round solar potential.
CMP | $0.27/kWh
CMP territory. Upscale coastal homes with larger system potential.
CMP | $0.27/kWh
CMP territory. Coastal homes with good southern exposure.
CMP | $0.27/kWh
CMP territory. Rural homes with excellent roof and ground-mount options.
Biddeford has a straightforward permitting process for residential solar. Your installer handles all paperwork as part of the installation.
Building permit
Required. Covers structural and roof modifications.
Electrical permit
Required. Covers inverter and panel wiring.
Processing time
2-3 weeks typical for residential systems.
CMP interconnection
Application filed by installer. Approval 2-4 weeks.
Mill district
Properties in the historic mill district may require additional review depending on building ownership structure.
Flood zone
Some coastal Biddeford properties are in FEMA flood zones. Ground-mount systems may need elevation considerations.
Maine Solar Hub
Complete Maine solar guide
Maine Solar Costs
Statewide cost data
Solar Without ITC
Post-25D strategies
NEB Guide
Net Energy Billing explained
Cash vs Loan vs Lease
Financing compared
Portland Solar
$2.95-$3.19/W
Bangor Solar
Versant territory
Lewiston Solar
$2.91-$3.12/W
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