How much do solar panels cost in Seattle?
By Our research team · Last verified · Methodology
Most 8 kW solar installs in Seattle cost $18,950–$29,850 for an 8 kW home system with standard panels, installed. $23,150 is the typical price, and there is no federal tax credit to take off it in 2026.
How we get this data- Typical
- $23,150
- Low end
- $16,000
- High end
- $37,200
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Seattle's price band
Seattle is pricier than 83% of the 195 US metros we price for solar panel work.
An 8 kW system with standard panels is $18,950–$29,850 installed in Seattle, about $2,900 per kW at the typical price. A 6 kW system runs $14,950–$23,450 and a 10 kW system $23,050–$36,300. Premium panels add 10–25%.
Seattle averages about 4 peak sun hours a day in NREL data, from about 5.7 in June to 1.4 in December, so most of the year's power comes in summer. Seattle City Light serves the city and Puget Sound Energy much of the suburbs.
Every price here is before incentives, and there is no federal one left for systems you own: the 30% credit ended for expenditures after December 31, 2025, and the IRS treats the expense as made when the install is complete.
Comparing cities, or after the US-wide picture? See the national guide: Solar panel cost in the USA.
$18,950–$29,850 installed in Seattle for an 8 kW home solar system with standard panels, typically $23,150 with no federal tax credit in 2026. That is about $2,900 per kW. Verified November 2026. Get free Seattle quotes →
- 8 kW system, installed: $18,950–$29,850 ($23,150 typical, about $2,900 per kW)
- 6 kW: $14,950–$23,450; 10 kW: $23,050–$36,300; premium panels add 10–25%
- Battery added with solar: $9,200–$18,850 for 10–13.5 kWh
- No federal tax credit for systems you own installed after December 31, 2025
- About 25 kWh a day from 8 kW at local sun levels; payback near 25 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. Seattle 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 | $18,950installed | $23,150 | $29,850 |
| 6 kW solar system, standard panelsinstalled | $14,950installed | $18,200 | $23,450 |
| 6 kW solar system, premium panelsinstalled | $16,450installed | $20,950 | $29,350 |
| 8 kW solar system, premium panelsinstalled | $20,900installed | $26,600 | $37,350 |
| 10 kW solar system, standard panelsinstalled | $23,050installed | $28,100 | $36,300 |
| 10 kW solar system, premium panelsinstalled | $25,350installed | $32,350 | $45,350 |
| 12–13 kW solar system for a large homeinstalled | $27,450installed | $34,600 | $46,050 |
| Price per kW, standard panelsper kW | $2,400per kW | $2,900 | $3,700 |
| 5 kWh battery added with solarinstalled | $5,600installed | $7,150 | $8,650 |
| 10–13 kWh battery added with solarinstalled | $9,200installed | $13,250 | $17,350 |
| Tesla Powerwall 3 (13.5 kWh), installedinstalled | $11,750installed | $15,050 | $18,850 |
| Hybrid inverter upgrade (battery-ready)installed | $2,550installed | $3,550 | $5,600 |
| String inverter replacementinstalled | $1,550installed | $2,350 | $3,550 |
| Microinverter replacement, one unit (out of warranty)per unit | $310per unit | $460 | $770 |
| Solar panel cleaning (15–25 panels)per visit | $160per visit | $310 | $520 |
| System health check / inspectionper visit | $160per visit | $260 | $360 |
| Remove and reinstall panels for a re-roof (about 20 panels)per job | $3,600per job | $5,150 | $8,250 |
| Critter guard around the array (8–10 kW)installed | $720installed | $1,250 | $1,750 |
| Main panel upgrade for solar (to 200 amps)installed | $1,550installed | $2,550 | $4,600 |
| Monitoring subscription, where chargedper year | $0per year | $120 | $240 |
| Ground mount instead of roof mount (8 kW)extra | $4,150extra | $6,700 | $10,350 |
| Clay or concrete tile roofextra | $1,050extra | $1,800 | $2,600 |
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Prices verified November 2026 · Cross-referenced against 42+ American pricing sources · See methodology
Figures cover the Seattle metro area. Jobs in Downtown, SoDo & Capitol Hill can run higher; simple roofs in Eastside & Tacoma sit closer to the low end.
Solar panel prices across Seattle
The panels cost the same across Seattle; the roofs do not. Flat and older roofs in Downtown, SoDo & Capitol Hill push labor up, and big simple roofs in Eastside & Tacoma keep it down.
Downtown, SoDo & Capitol Hill
- 8 kW installed
- $20,100–$32,250 installed
- Typical job
- $15,850–$39,200 / 6–10 kW system
Dense blocks with row houses, shared walls and small roofs. Expect fewer panels than the roof size suggests, a crane or extra crew on some jobs, and parking folded into the labor line.
Ballard, Fremont & Georgetown
- 8 kW installed
- $19,500–$31,050 installed
- Typical job
- $15,400–$37,750 / 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 Seattle & Rainier Valley
- 8 kW installed
- $18,950–$29,850 installed
- Typical job
- $14,950–$36,300 / 6–10 kW system
Typical single-family roofs and typical prices. Most installs here take one to three days on the roof.
Eastside & Tacoma
- 8 kW installed
- $18,550–$29,850 installed
- Typical job
- $14,650–$36,300 / 6–10 kW system
Bigger, newer homes with large, simple roofs. Installs go fast, and many homeowners here size up to 10 kW or add a battery.
Real solar jobs in Seattle
Here's what common solar panel jobs cost in Seattle in 2026, installed, before incentives.
Smaller home: 6 kW, standard panels
About 19 kWh on an average day at Seattle's sun levels. Smaller systems cost more per kW, about $3,050 here against $2,900 for 8 kW.
Typical home: 8 kW, standard panels
About 25 kWh a day and 9,250 kWh a year. $23,150 is the typical Seattle 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 $23,050–$36,300.
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 Seattle?
Between $18,950 and $29,850 for an 8 kW system, installed, and most Seattle homeowners pay close to $23,150. Three things set the number: system size, panel brand and the roof. A simple shingle roof with standard panels lands near the low end; premium panels on a steep or tile roof can pass $37,350.
There is no federal credit to take off these numbers any more. What still cuts the bill in Seattle 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 Seattle (2026): the lines on a quote
An 8 kW system is $18,950–$29,850 installed, a battery adds $9,200–$18,850, and a panel upgrade adds $1,550–$4,600 if your panel is full.
| Line on the quote | Low | Typical | High |
|---|---|---|---|
| 8 kW system, standard panels | $18,950 | $23,150 | $29,850 |
| 8 kW system, premium panels | $20,900 | $26,600 | $37,350 |
| Tesla Powerwall 3, added at install | $11,750 | $15,050 | $18,850 |
| Main panel upgrade (to 200 amps) | $1,550 | $2,550 | $4,600 |
| Tile roof, extra | $1,050 | $1,800 | $2,600 |
| Ground mount, extra | $4,150 | $6,700 | $10,350 |
| Critter guard | $720 | $1,250 | $1,750 |
| String inverter replacement (later) | $1,550 | $2,350 | $3,550 |
The panels are the most visible line, but not where Seattle 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 Seattle:
- System size — bigger systems cost less per kW: about $3,050 at 6 kW against $2,800 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 $1,050–$2,600, a ground mount $4,150–$10,350, and a worn roof should be replaced first.
- The electrical panel — a full or 100-amp panel can add $1,550–$4,600 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 Seattle 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 Seattle by System Size
A 6 kW system is $14,950–$23,450, 8 kW is $18,950–$29,850, and 10 kW is $23,050–$36,300, installed with standard panels, before any state or utility incentive.
Worked example: a Seattle home using about 770 kWh a month gets an 8 kW system at $23,150. If the panel is 100 amps, add an upgrade at $2,550 for $25,700. Add a Powerwall 3 in the same job and the total is about $40,000.
A larger home with central AC or an EV may need 10–12 kW: $28,100 for 10 kW, or $34,600 for 12–13 kW at typical prices. Premium panels on 10 kW run $25,350–$45,350.
Seattle Solar Panel Costs by System Size
| System size | Cost | Best for |
|---|---|---|
| 4 kW system — about 13 kWh a day | $11,050–$17,400 installed | Small home or condo; low bills or a small roof |
| 6 kW system — about 19 kWh a day | $14,950–$23,450 installed | Smaller home or modest power use |
| 8 kW system — about 25 kWh a day | $18,950–$29,850 installed | Typical home; about 770 kWh a month of use |
| 10 kW system — about 32 kWh a day | $23,050–$36,300 installed | Larger home, central AC or one EV |
| 12 kW system — about 38 kWh a day | $27,450–$43,200 installed | Big home, pool or electric heat |
| 15 kW system — about 47 kWh a day | $33,100–$52,100 installed | Very large all-electric home or two EVs |
| 8 kW solar + 13.5 kWh battery | $30,100–$47,750 installed | Backup in outages and evening use where exports earn little |
| 13.5 kWh battery only (no solar) | $11,750–$18,850 installed | Backup without panels; shaded roofs |
Hardware vs everything else: where a Seattle solar quote goes
Panels, inverter, racking and wiring are only about 41% of a typical US solar price. On a $23,150 Seattle job that is roughly $9,500. 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 9,250 kWh a year. At Washington's 2024 average of 10.1 cents a kWh across all customers (EIA; home rates usually run higher), that power is worth about $930 a year, a simple payback near 25 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 Seattle 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 $1,050–$2,600 extra for a tile roof
- Panel upgrade — $1,550–$4,600 if your electrical panel is full or 100 amps
- Critter guard — $720–$1,750 to keep birds and squirrels out from under the panels
- A battery — $9,200–$18,850 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.
What's local
Seattle averages about 4 peak sun hours a day in NREL data, from about 5.7 in June to 1.4 in December, so most of the year's power comes in summer. Seattle City Light serves the city and Puget Sound Energy much of the suburbs.
System size
An 8 kW system is $18,950–$29,850. A 6 kW system is $14,950–$23,450 and 10 kW $23,050–$36,300; the price per kW drops as the system grows.
Panels and inverters
Premium panels add 10–25% ($20,900–$37,350 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 ($1,550–$3,550).
Your roof
Clay or concrete tile adds $1,050–$2,600, a ground mount $4,150–$10,350. If the roof has less than about 10 years left, re-roof first: removing and reinstalling panels later costs $3,600–$8,250.
Your electrical panel
A full or 100-amp panel is a common surprise. Upgrading to 200 amps adds $1,550–$4,600 in Seattle, and it is cheapest done with the solar job.
Adding a battery
A 10–13 kWh battery adds $9,200–$17,350, a Tesla Powerwall 3 $11,750–$18,850. Batteries make the most sense where outages are common or exports earn little.
Permits and the utility in Seattle
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. Seattle quotes for 8 kW run $18,950–$29,850; 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 $2,400–$2,900 per kW is a good Seattle price for standard panels; much above $3,700 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 $3,600–$8,250 to take them off and put them back.
- Bundle the panel and battery work.A panel upgrade ($1,550–$4,600) 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 Seattle 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 Seattle?
$18,950–$29,850 installed for an 8 kW system, and $23,150 is typical. A 6 kW system is $14,950–$23,450 and 10 kW is $23,050–$36,300, before incentives.
What is the price per kW for solar in Seattle?
About $2,900 per kW for an 8 kW system with standard panels, within $2,400–$3,700. Smaller systems cost more per kW and larger ones less.
Is there still a federal solar tax credit in Seattle?
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 Seattle?
About $30,100–$47,750 for 8 kW of panels plus a Tesla Powerwall 3. A 10–13 kWh battery from another brand adds $9,200–$17,350 to the solar price.
How long does solar take to pay off in Seattle?
Roughly 25 years for a typical 8 kW system at Washington's 2024 average power price from EIA (10.1 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 Seattle?
About 25 kWh on an average day, or 9,250 kWh a year, based on about 4.0 peak sun hours a day for Seattle in NREL data.
Do I need a new electrical panel for solar in Seattle?
Not always. Many 200-amp panels take solar as they are. A full or 100-amp panel may need an upgrade, about $1,550–$4,600 here.
What does solar panel cleaning and upkeep cost in Seattle?
Cleaning is $160–$520 a visit and a health check $160–$360. Many roofs never need cleaning; rain does most of it. Budget $1,550–$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 Seattle?
$3,600–$8,250 to take about 20 panels off and put them back, on top of the roof itself.
What permits does solar need in Seattle?
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 Seattle metro area, November 2026. Outer suburbs may vary.
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