How much do solar panels cost in Portland?
By Our research team · Last verified · Methodology
Most 8 kW solar installs in Portland cost $18,600–$29,250 installed, for 8 kW of standard panels on a typical roof. Most Portland homeowners pay about $22,700; adding a Powerwall 3 brings it to about $36,800.
How we get this data- Typical
- $22,700
- Low end
- $15,700
- High end
- $36,500
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Get my fair quote →The typical Portland price is $22,700, in line with the US typical of $22,400.
Portland's price band
Portland is pricier than 71% of the 195 US metros we price for solar panel work.
Solar in Portland starts near $18,600 for 8 kW, sits at $22,700 for a typical job and reaches $29,250 on hard roofs or with high-end gear. A battery added at the same time is $9,050–$18,650 more.
Portland is a smaller market with fewer solar installers to choose from, and quotes for the same 8 kW system can sit $10,650 apart. Maine averages about 4.5 peak sun hours a day in NREL data (the US average is about 5). Before you size the system, ask your utility how it credits exported power. In Portland, that answer matters more to payback than a few hundred dollars on the quote.
The federal 30% Residential Clean Energy Credit ended for expenditures after December 31, 2025, and the IRS counts the expense when installation is finished, so a system completed in 2026 gets no federal credit even if you paid in 2025.
Comparing cities, or after the US-wide picture? See the national guide: Solar panel cost in the USA.
$18,600–$29,250 installed in Portland for an 8 kW home solar system with standard panels, typically $22,700 with no federal tax credit in 2026. That is about $2,850 per kW. Verified November 2026. Get free Portland quotes →
- 8 kW system, installed: $18,600–$29,250 ($22,700 typical, about $2,850 per kW)
- 6 kW: $14,650–$23,000; 10 kW: $22,600–$35,550; premium panels add 10–25%
- Battery added with solar: $9,050–$18,650 for 10–13.5 kWh
- No federal tax credit for systems you own installed after December 31, 2025
- About 29 kWh a day from 8 kW at local sun levels; payback near 11 years at full-rate credits
Prices verified November 2026 · Cross-referenced against 42+ American pricing sources · See methodology
Installed prices before any state or utility incentive, and with no federal credit. Portland metro, re-verified November 2026. Battery and inverter hardware is priced nationally, so those lines move less from city to city.
| Service | Low | Typical | High |
|---|---|---|---|
| 8 kW solar system, standard panelsinstalled | $18,600installed | $22,700 | $29,250 |
| 6 kW solar system, standard panelsinstalled | $14,650installed | $17,850 | $23,000 |
| 6 kW solar system, premium panelsinstalled | $16,100installed | $20,500 | $28,800 |
| 8 kW solar system, premium panelsinstalled | $20,450installed | $26,100 | $36,650 |
| 10 kW solar system, standard panelsinstalled | $22,600installed | $27,550 | $35,550 |
| 10 kW solar system, premium panelsinstalled | $24,900installed | $31,700 | $44,500 |
| 12–13 kW solar system for a large homeinstalled | $26,900installed | $33,950 | $45,150 |
| Price per kW, standard panelsper kW | $2,350per kW | $2,850 | $3,650 |
| 5 kWh battery added with solarinstalled | $5,550installed | $7,050 | $8,550 |
| 10–13 kWh battery added with solarinstalled | $9,050installed | $13,100 | $17,150 |
| Tesla Powerwall 3 (13.5 kWh), installedinstalled | $11,600installed | $14,850 | $18,650 |
| Hybrid inverter upgrade (battery-ready)installed | $2,500installed | $3,550 | $5,550 |
| String inverter replacementinstalled | $1,500installed | $2,300 | $3,550 |
| Microinverter replacement, one unit (out of warranty)per unit | $300per unit | $450 | $760 |
| Solar panel cleaning (15–25 panels)per visit | $150per visit | $300 | $510 |
| System health check / inspectionper visit | $150per visit | $250 | $350 |
| Remove and reinstall panels for a re-roof (about 20 panels)per job | $3,550per job | $5,050 | $8,100 |
| Critter guard around the array (8–10 kW)installed | $710installed | $1,200 | $1,700 |
| Main panel upgrade for solar (to 200 amps)installed | $1,500installed | $2,550 | $4,550 |
| Monitoring subscription, where chargedper year | $0per year | $120 | $240 |
| Ground mount instead of roof mount (8 kW)extra | $4,050extra | $6,600 | $10,150 |
| Clay or concrete tile roofextra | $1,000extra | $1,750 | $2,550 |
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Prices verified November 2026 · Cross-referenced against 42+ American pricing sources · See methodology
Prices cover the Portland metro and assume a pitched shingle roof in good shape. Older roofs in East End & Munjoy Hill more often need repair first.
Solar panel prices across Portland
Same system, four price bands. The spread comes from roof type, access and shade: tighter and older in Downtown, Old Port & Bayside, easier in Scarborough, Biddeford & Lewiston.
Downtown, Old Port & Bayside
- 8 kW installed
- $19,700–$31,600 installed
- Typical job
- $15,550–$38,400 / 6–10 kW system
Flat roofs, older buildings and little street parking. Arrays here often need tilt racking or weighted mounts, fire-code walkways cut the panel count, and permit reviews take longer.
East End & Munjoy Hill
- 8 kW installed
- $19,150–$30,400 installed
- Typical job
- $15,100–$36,950 / 6–10 kW system
Mixed older housing and lots of mature trees. A shade report and a roof check up front stop surprises later.
South Portland & Westbrook
- 8 kW installed
- $18,600–$29,250 installed
- Typical job
- $14,650–$35,550 / 6–10 kW system
Standard pricing for the metro: pitched shingle roofs, average panels and short drives for most installers.
Scarborough, Biddeford & Lewiston
- 8 kW installed
- $18,250–$29,250 installed
- Typical job
- $14,350–$35,550 / 6–10 kW system
Big roofs and big bills. Larger systems cost less per kW, and this is where most 10–12 kW jobs in the metro are.
Real solar jobs in Portland
Here's what common solar panel jobs cost in Portland in 2026, installed, before incentives.
Smaller home: 6 kW, standard panels
About 22 kWh on an average day at Maine's sun levels. Smaller systems cost more per kW, about $3,000 here against $2,850 for 8 kW.
Typical home: 8 kW, standard panels
About 29 kWh a day and 10,600 kWh a year. $22,700 is the typical Portland price for a pitched shingle roof in good shape.
Solar plus a Powerwall 3
An 8 kW system with a 13.5 kWh battery for outages and evening use. Doing both in one job shares the crew, the permit and the utility paperwork.
Big home or EV owner: 10 kW, premium panels
Premium panels make more power per square foot, which helps on small or shaded roofs. Standard panels at 10 kW are $22,600–$35,550.
Re-roof with solar already on it
Taking about 20 panels off and putting them back after the roofers leave, on top of the roof itself. If your roof has less than 10 years left, replace it before solar goes on.
How much do solar panels cost in Portland?
$18,600–$29,250 installed, with $22,700 the typical Portland price for 8 kW. Only about a third of that is hardware (panels, inverter, racking). The rest is sales, design, permits, labor and profit, and that is the part that changes from one Portland installer to the next.
There is no federal credit to take off these numbers any more. What still cuts the bill in Portland is a second or third quote, the right system size for your actual use, and any state or utility program. Figures re-verified against 42 sources in November 2026.
Solar prices in Portland (2026): the lines on a quote
An 8 kW system is $18,600–$29,250 installed, a battery adds $9,050–$18,650, and a panel upgrade adds $1,500–$4,550 if your panel is full.
| Line on the quote | Low | Typical | High |
|---|---|---|---|
| 8 kW system, standard panels | $18,600 | $22,700 | $29,250 |
| 8 kW system, premium panels | $20,450 | $26,100 | $36,650 |
| Tesla Powerwall 3, added at install | $11,600 | $14,850 | $18,650 |
| Main panel upgrade (to 200 amps) | $1,500 | $2,550 | $4,550 |
| Tile roof, extra | $1,000 | $1,750 | $2,550 |
| Ground mount, extra | $4,050 | $6,600 | $10,150 |
| Critter guard | $710 | $1,200 | $1,700 |
| String inverter replacement (later) | $1,500 | $2,300 | $3,550 |
The panels are the most visible line, but not where Portland quotes differ most. Compare the inverter type, the warranty, and whether roof work, a panel upgrade and permits are in the price.
What moves a solar quote in Portland:
- System size — bigger systems cost less per kW: about $3,000 at 6 kW against $2,750 at 10 kW.
- Panel and inverter brand — premium panels run 10–25% more; microinverters cost more than one string inverter but last longer.
- The roof — tile adds $1,000–$2,550, a ground mount $4,050–$10,150, and a worn roof should be replaced first.
- The electrical panel — a full or 100-amp panel can add $1,500–$4,550 for an upgrade.
- Who sells it — sales and marketing are about 15% of a typical price; local installers often quote less than national brands.
Ask every Portland installer for the same five things: system size in kW, panel and inverter models, the price per kW, the warranty terms, and what roof, panel and permit work is included. Compare those lines, not the total. Get a quote for your solar install →
Solar Panel Cost in Portland by System Size
A 6 kW system is $14,650–$23,000, 8 kW is $18,600–$29,250, and 10 kW is $22,600–$35,550, installed with standard panels, before any state or utility incentive.
Worked example: a Portland home using about 890 kWh a month gets an 8 kW system at $22,700. If the panel is 100 amps, add an upgrade at $2,550 for $25,250. Add a Powerwall 3 in the same job and the total is about $39,350.
A larger home with central AC or an EV may need 10–12 kW: $27,550 for 10 kW, or $33,950 for 12–13 kW at typical prices. Premium panels on 10 kW run $24,900–$44,500.
Portland Solar Panel Costs by System Size
| System size | Cost | Best for |
|---|---|---|
| 4 kW system — about 15 kWh a day | $10,850–$17,100 installed | Small home or condo; low bills or a small roof |
| 6 kW system — about 22 kWh a day | $14,650–$23,000 installed | Smaller home or modest power use |
| 8 kW system — about 29 kWh a day | $18,600–$29,250 installed | Typical home; about 890 kWh a month of use |
| 10 kW system — about 36 kWh a day | $22,600–$35,550 installed | Larger home, central AC or one EV |
| 12 kW system — about 44 kWh a day | $26,900–$42,350 installed | Big home, pool or electric heat |
| 15 kW system — about 55 kWh a day | $32,500–$51,100 installed | Very large all-electric home or two EVs |
| 8 kW solar + 13.5 kWh battery | $29,600–$46,950 installed | Backup in outages and evening use where exports earn little |
| 13.5 kWh battery only (no solar) | $11,600–$18,650 installed | Backup without panels; shaded roofs |
Hardware vs everything else: where a Portland solar quote goes
Panels, inverter, racking and wiring are only about 41% of a typical US solar price. On a $22,700 Portland job that is roughly $9,300. Sales and marketing take about 15%, design, paperwork and overhead about 20%, installer profit about 16%, and the install labor itself only about 6%.
That is why the payback math matters more than the panel brand. An 8 kW system here makes about 10,600 kWh a year. At Maine's 2024 average of 19.7 cents a kWh across all customers (EIA; home rates usually run higher), that power is worth about $2,100 a year, a simple payback near 11 years. That assumes your utility credits exports at the full rate; lower export credits stretch it, and higher home rates shorten it.
What's included in a Portland solar quote (and what costs extra)
A standard quote covers the panels, inverter, racking, wiring, the install crew, permits, inspection and the utility hookup paperwork. The headline price often leaves out:
- Roof work — repairs, or $1,000–$2,550 extra for a tile roof
- Panel upgrade — $1,500–$4,550 if your electrical panel is full or 100 amps
- Critter guard — $710–$1,700 to keep birds and squirrels out from under the panels
- A battery — $9,050–$18,650 for 10–13.5 kWh of storage, if you want backup
Get the warranty terms in writing: panel and inverter years, the workmanship warranty, and who fixes roof leaks around the mounts.
Your local market
Portland is a smaller market with fewer solar installers to choose from. The hardware price is national; labor, permits, sales costs and how many installers compete for the job are local.
System size
An 8 kW system is $18,600–$29,250. A 6 kW system is $14,650–$23,000 and 10 kW $22,600–$35,550; the price per kW drops as the system grows.
Panels and inverters
Premium panels add 10–25% ($20,450–$36,650 for 8 kW). Microinverters cost more upfront than one string inverter but usually carry 20–25 year warranties; a string inverter often needs replacing once ($1,500–$3,550).
Your roof
Clay or concrete tile adds $1,000–$2,550, a ground mount $4,050–$10,150. If the roof has less than about 10 years left, re-roof first: removing and reinstalling panels later costs $3,550–$8,100.
Your electrical panel
A full or 100-amp panel is a common surprise. Upgrading to 200 amps adds $1,500–$4,550 in Portland, and it is cheapest done with the solar job.
Adding a battery
A 10–13 kWh battery adds $9,050–$17,150, a Tesla Powerwall 3 $11,600–$18,650. Batteries make the most sense where outages are common or exports earn little.
Permits and the utility in Portland
Permits and inspections are about 3% of a typical price, and the utility must approve the hookup before you can switch on. Ask who files the paperwork; a good installer does all of it.
- Get three quotes.Same panels, different sales costs. Portland quotes for 8 kW run $18,600–$29,250; a second and third bid is the fastest way to find the padding.
- Compare the price per kW.Divide each quote by its size in kW. About $2,350–$2,850 per kW is a good Portland price for standard panels; much above $3,650 needs a reason.
- Size it to your bills, not your roof.Use 12 months of bills. A system that makes more than you use only pays off if your utility credits exports well.
- Fix the roof first.Re-roofing under existing panels means paying $3,550–$8,100 to take them off and put them back.
- Bundle the panel and battery work.A panel upgrade ($1,500–$4,550) or a battery done in the same job shares the permit, the inspection and the utility visit.
- Check state and utility help.Ask your utility about rebates and how it credits exports before you sign.
Before you pay a deposit to a Portland solar installer, get these in writing:
- System size in kW and the expected output in kWh a year
- Panel and inverter brand and model
- Price per kW and the total before incentives
- Roof work, tile or ground-mount extras, priced as their own lines
- Any panel upgrade, priced as its own line
- Permit, inspection and utility interconnection, and who files them
- Warranties: panels, inverter, workmanship and roof leaks
- Payment schedule, and what happens if the utility hookup is delayed
How much do solar panels cost in Portland?
$18,600–$29,250 installed for an 8 kW system, and $22,700 is typical. A 6 kW system is $14,650–$23,000 and 10 kW is $22,600–$35,550, before incentives.
What is the price per kW for solar in Portland?
About $2,850 per kW for an 8 kW system with standard panels, within $2,350–$3,650. Smaller systems cost more per kW and larger ones less.
Is there still a federal solar tax credit in Portland?
Not for systems you buy. The 30% Residential Clean Energy Credit ended for expenditures made after December 31, 2025, and the IRS treats the expense as made when installation is complete. Lease and PPA companies may still claim a business credit and pass some of it on in their price.
How much does solar with a battery cost in Portland?
About $29,600–$46,950 for 8 kW of panels plus a Tesla Powerwall 3. A 10–13 kWh battery from another brand adds $9,050–$17,150 to the solar price.
How long does solar take to pay off in Portland?
Roughly 11 years for a typical 8 kW system at Maine's 2024 average power price from EIA (19.7 cents a kWh across all customers), with every kWh worth the full price. That assumes your utility credits exports at the full rate; lower export credits stretch it, and higher home rates shorten it.
How much power will an 8 kW system make in Portland?
About 29 kWh on an average day, or 10,600 kWh a year, based on about 4.5 peak sun hours a day for Maine in NREL data.
Do I need a new electrical panel for solar in Portland?
Not always. Many 200-amp panels take solar as they are. A full or 100-amp panel may need an upgrade, about $1,500–$4,550 here.
What does solar panel cleaning and upkeep cost in Portland?
Cleaning is $150–$510 a visit and a health check $150–$350. Many roofs never need cleaning; rain does most of it. Budget $1,500–$3,550 for one string inverter replacement over the life of the system.
How much does it cost to remove solar panels for a new roof in Portland?
$3,550–$8,100 to take about 20 panels off and put them back, on top of the roof itself.
What permits does solar need in Portland?
A building or electrical permit, an inspection, and the utility's approval to connect. Your installer should file all of it; permits and inspections are about 3% of a typical price.
Prices verified November 2026 · Cross-referenced against 42+ American pricing sources · See methodology
Prices for the Portland metro area, November 2026. Outer suburbs may vary.
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