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Kittery solar costs $2.85-$3.15/W in 2026, averaging $24,000 for an 8 kW system. Maine's southernmost town with CMP 1:1 NEB credits at $0.27/kWh, generating ~$2,592/year. No federal 25D ITC. Property tax 100% exempt. Payback: ~15 years (cash) or day-1 savings (PPA).
$3.00/W
Avg Cost
$24,000
8 kW System
$0.27
CMP Rate (/kWh)
$2,592
NEB/Year
~15 yr
Payback
Kittery solar installation costs $2.85-$3.15 per watt in 2026. As Maine's southernmost town, Kittery sits right on the New Hampshire border and enjoys the strongest solar irradiance in the state. Kittery homeowners benefit from Maine's superior 1:1 NEB credits compared to NH's ~85% NEM rate.
| Component | Cost Range |
|---|---|
| Solar panels (8 kW) | $8,000-$9,600 |
| Inverter(s) | $2,400-$3,600 |
| Mounting and racking | $2,000-$3,000 |
| Electrical work and wiring | $2,200-$3,200 |
| Permitting and interconnection | $400-$800 |
| Labor and installation | $4,500-$6,000 |
| Design, engineering, overhead | $2,800-$4,000 |
| Total (before incentives) | $22,800-$25,200 |
The Section 25D residential solar tax credit expired December 31, 2025. Kittery 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.
Kittery has a mix of residential neighborhoods — from compact homes near the outlets and Route 1 corridor to larger properties in Kittery Point and along the coast. The average system size is 8 kW, reflecting the town's moderate housing stock.
| System Size | Panels | Cost Range | Annual NEB | Payback |
|---|---|---|---|---|
| 5 kW | 11-12 | $14,250-$15,750 | $1,350 | ~15 yr |
| 8 kW | 18-19 | $22,800-$25,200 | $2,592 | ~15 yr |
| 9 kW | 20-21 | $25,650-$28,350 | $2,916 | ~15 yr |
| 12 kW | 27-28 | $34,200-$37,800 | $3,888 | ~14 yr |
* 8 kW highlighted as the Kittery average. All costs before incentives. NEB based on CMP $0.27/kWh.
9,600
kWh/year (8 kW system)
$2,592
Annual NEB credits
~15 yrs
Payback (cash purchase)
System cost: $24,000
Year 1 NEB value: $2,592
Rate increase (est): 4-5%/year
Payback (cash): ~15 years
25-year savings: $45,000-$65,000+
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 Kittery homeowners 1:1 retail-rate credits for every kilowatt-hour of solar electricity exported to the CMP grid. This is a key advantage over neighboring New Hampshire, which credits at only ~85% of retail.
Learn more about Maine's net metering in our Maine NEB Guide.
Kittery homeowners can go solar with $0 down through Propel. Fixed monthly payment lower than your CMP bill, full ownership by year 5, and no need to tie up $24,000 in cash.
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: $24,000 upfront, ~15 year payback, $0 federal credit.
Propel: $0 down, save from day 1, own by year 5, 30% built-in discount.
Kittery, York, Eliot, South Berwick, Wells, Kennebunk, Biddeford — all CMP territory.
Kittery is Maine's southernmost town, population approximately 10,000, sitting directly on the New Hampshire border across the Piscataqua River from Portsmouth. Known for the Kittery Outlets, the Portsmouth Naval Shipyard (on Seavey Island), and beautiful coastal neighborhoods, Kittery offers a unique position — Maine's best solar policies with the southernmost latitude in the state.
$24,000
$0 Down
$0 Down
Compare all options in our Maine Cash vs Loan vs Lease Guide.
Southern Maine communities near Kittery are in CMP territory. Portsmouth, NH is across the river with different utility and state incentives.
CMP | $0.27/kWh
Coastal resort town to the north. Similar pricing, historic district.
CMP | $0.27/kWh
CMP territory. Inland neighbor with larger lots ideal for ground-mount.
CMP | $0.27/kWh
CMP territory. Inland community with straightforward permitting.
Eversource | $0.25/kWh
Across the Piscataqua River. Different utility and state incentives.
CMP | $0.27/kWh
CMP territory. Coastal town with mix of seasonal and year-round homes.
Kittery has a straightforward solar permitting process with online applications accepted and no historic district overlay to navigate.
Building permit
Required. Combined building/electrical permit — no separate electrical permit needed.
Processing time
~7 business days typical for residential systems.
Online applications
Kittery accepts online permit applications.
CMP interconnection
Application filed by installer. Approval 2-4 weeks.
No historic district
No historic district overlay — no design review required.
Coastal zone
Kittery Point and Gerrish Island are fully coastal. Salt-air rated equipment required for waterfront properties.
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
York Solar
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Portland Solar
$2.95-$3.19/W
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