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Get a Free QuoteKennebunk solar costs $2.85-$3.15/W in 2026, averaging $25,500 for an 8.5 kW system. The number that actually separates Kennebunk from every other town on this site is the utility: Kennebunk is served by Kennebunk Light & Power District, a municipal utility, notCMP. KLPD's published rate is $0.1762/kWh plus a $12.00/mo service charge — about 35% below the CMP figure quoted on Maine's CMP-territory pages, which changes the whole savings calculation. No federal 25D ITC. Property tax 100% exempt statewide.
$3.00/W
Avg Cost
$25,500
8.5 kW System
$0.1762
KLPD Rate (/kWh)
$1,797
Max Avoided Cost/Year
~14.2 yr
Simple Payback (ceiling)
Kennebunk solar installation costs $2.85-$3.15 per watt in 2026. This charming coastal tourist town offers a mix of historic village homes and newer residential developments, with solar-ready roofs common in the outer neighborhoods along Route 1 and Route 35.
| Component | Cost Range |
|---|---|
| Solar panels (8.5 kW) | $8,500-$10,200 |
| Inverter(s) | $2,500-$3,800 |
| Mounting and racking | $2,000-$3,000 |
| Electrical work and wiring | $2,400-$3,400 |
| Permitting and interconnection | $500-$900 |
| Labor and installation | $4,800-$6,500 |
| Design, engineering, overhead | $3,000-$4,200 |
| Total (before incentives) | $24,225-$26,775 |
The Section 25D residential solar tax credit expired December 31, 2025. Kennebunk 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.
Kennebunk homes range from compact village properties in the historic center to larger homes along Route 1, Route 35, and the Kennebunk Beach area. System sizes typically range from 5-12 kW, with 8.5 kW being the local average.
| System Size | Panels | Cost Range | Max Avoided Cost/Yr | Payback |
|---|---|---|---|---|
| 5 kW | 11-12 | $14,250-$15,750 | $1,057 | ~14.2 yr |
| 8 kW | 18-19 | $22,800-$25,200 | $1,691 | ~14.2 yr |
| 8.5 kW | 19-20 | $24,225-$26,775 | $1,797 | ~14.2 yr |
| 12 kW | 27-28 | $34,200-$37,800 | $2,537 | ~14.2 yr |
* 8.5 kW highlighted as the Kennebunk average. All costs before incentives. The annual column is production × KLPD's published $0.176191/kWh stack and assumes full self-consumption, so it is a ceiling rather than a forecast. Payback is flat across sizes because both cost and avoided value scale with array size; what actually moves it is your export share and the credit rate in KLPD's Net Metering Agreement.
10,200
kWh/year (8.5 kW system)
$1,797
Max avoided cost/year at KLPD's rate
~14.2 yrs
Simple payback, self-consumption ceiling
A solar array's value is production multiplied by the price of the electricity it replaces. Kennebunk buys electricity for less than its CMP neighbours do, so the same roof, the same panels and the same installer produce a smaller annual number here. That is not a reason to skip solar — it is a reason to run your own bill rather than a regional average.
System cost: $25,500
KLPD per-kWh stack: $0.176191
Unavoidable service charge: $12.00/mo ($144/yr)
Value on KLPD: up to $1,797/yr
Same array at CMP's $0.27: $2,754/yr
Annual gap from the utility alone: $957
KLPD figures: klpd.org published residential rates, effective August 1, 2026. The CMP comparison uses the $0.27/kWh this site carries for CMP; it is shown to size the difference, not as a verified CMP tariff reading.
NuWatt's Propel financing offers $0 down with a fixed monthly payment. Unlike a lease, you own the system after the 25-year loan. Because Kennebunk is on a municipal rate, the payment-versus-bill comparison has to be run against your own KLPD statement. See if you qualify at /maine/propel-solar
Kennebunk is one of a small number of Maine towns served by a consumer-owned municipal utility rather than an investor-owned one. Electricity here comes from Kennebunk Light & Power District — a district chartered by the Maine Legislature in 1951, owned by the customers it serves, and run by a five-member board of trustees elected by Kennebunk voters. It bills more than 7,500 accounts.
That matters for solar because every savings estimate you will read for southern Maine is built on CMP's numbers, and none of them apply here. The district's charter territory is the entire town of kennebunk, plus the portions of lyman, wells and arundel served as of november 7, 2006— so the boundary runs through three neighbouring towns and does not follow town lines. If you are near the edge, the meter decides, not the address.
| Charge | $/kWh | What it covers |
|---|---|---|
| KLPD delivery | 0.046487 | Line, pole and wire maintenance |
| Energy conservation assessment | 0.002779 | Statutory efficiency assessment |
| Electric supply | 0.089479 | Electricity purchased under KLPD supply contract |
| Regional network service | 0.030692 | ISO-NE regional transmission |
| LNS transmission | 0.005684 | Local network service |
| Low income assistance program | 0.001070 | Statutory assistance surcharge |
| Total per kWh | 0.176191 | Plus a $12.00 monthly service charge |
Source: klpd.org — "Current Rates", residential schedule effective August 1, 2026. Adding the fixed charge at a representative 600 kWh a month gives an all-in bundled rate of about $0.196/kWh. Note the supply line, which KLPD describes as electricity purchased under its own supply contract: between the district's July and August 2026 schedules that component moved while the KLPD delivery component did not. The parts of a Kennebunk bill do not all move together, and only some of them are ones solar can offset.
KLPD publishes its rates. It does not publish the credit terms of its Net Metering Agreement on that rate page — those live inside the agreement itself. NuWatt will not print a number it has not read, so this page quotes no export credit rate for Kennebunk.
Ask the district for the current agreement before you size an array. On a CMP-territory roof you can size for annual production and let 1:1 credits carry the surplus; on KLPD you should know the credit terms first, because they decide whether oversizing pays or wastes.
For how net energy billing works on Maine's investor-owned utilities — which is the regime for Biddeford, Saco, Portland and the rest of the CMP map, but not for Kennebunk — see our Maine NEB Guide.
Many Kennebunk homeowners prefer to keep their cash free for other investments. Propel Solar gives you $0 down, a fixed monthly payment, and a full 25-year Concert Loan — without tying up $25,000+. The payment is quoted against your own KLPD statement, not a CMP average.
A third-party owner installs solar on your roof and captures the 40% Section 48E ITC (FEOC-compliant Silfab panels) — a credit no longer available to homeowner purchases.
Your monthly solar payment is fixed. No escalators — while KLPD's supply component, which it buys under contract, moves with each rate schedule.
Full ownership — 25-year loan, $0 down, 9.69% APR. American-made Silfab 440W panels. Free maintenance during the lease period.
Cash purchase: $25,500 upfront, ~14.2 year simple payback at KLPD's rate, $0 federal credit.
Propel: $0 down, save from day 1, own the system (25-year loan), 40% built-in discount.
Kennebunk, Kennebunkport, Wells, Biddeford, Saco, Arundel, York and Kittery. Note that these towns are not all on the same utility: Kennebunk is KLPD, parts of Wells, Arundel and Lyman are KLPD, and the rest is CMP. Propel is available either way, but the savings comparison is run against whichever bill you actually receive.
Kennebunk is a charming coastal town of approximately 13,000 residents, known for its historic village center, beautiful beaches, and proximity to Kennebunkport. While tourism drives the summer economy, year-round residents benefit from strong solar economics with NEB credits generating savings throughout the year.
$25,500
$0 Down
$0 Down
Compare all options in our Maine Cash vs Loan vs Lease Guide.
Installation prices are similar across southern Maine, but the utility is not. KLPD's charter runs through parts of three neighbouring towns, so two houses a mile apart can be on different rate schedules with different net-metering paperwork. These rows say what is verified about each place and nothing more.
Split: KLPD in part, CMP elsewhere | Depends on address
KLPD's charter covers the part of Wells it was serving on Nov 7, 2006. The rest of Wells is CMP. Check the meter, not the town line.
Split: KLPD in part, CMP elsewhere | Depends on address
Same charter clause. The KLPD portion is the area historically known as North Kennebunkport.
Split: KLPD in part, CMP elsewhere | Depends on address
The third partial town in KLPD's charter. Rural lots here are strong ground-mount candidates either way.
Not in the KLPD district | CMP schedule
Despite the name, Kennebunkport sits outside the district charter. Its bills follow the CMP rate, not the KLPD one on this page.
CMP | CMP schedule
The nearest city with a documented federal permitting record — a 9-day permit median and 30 installs in the 2024 cohort.
Kennebunk requires in-person permit applications at town hall. The historic village center has an overlay that may require design review for solar installations.
Building permit
Required. Covers structural and roof modifications.
Electrical permit
Required separately. Covers inverter and panel wiring.
Processing time
~8 business days typical (up to 10 in historic areas).
In-person required
Permits must be submitted in person at Kennebunk Town Hall.
Historic district
Properties in the historic village center may require design review, adding 2-4 weeks.
KLPD interconnection
Filed with the district, not CMP: registration form, Interconnection Application, and a signed Net Metering Agreement.
Coastal zone
Kennebunk Beach properties: marine-grade equipment and wind-load engineering may be required.
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
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See exactly what solar will cost and save for your Kennebunk home. Free assessment run against your actual KLPD rate schedule — not a CMP average.