Solar in SeaTac, WA
With Puget Sound Energy's electricity at about 18.2¢ per kWh and 1,090 kWh of sun per kW, solar is worth it for a typical SeaTac home today: about a 13.5-year payback.
- Payback, typical home
- 13.5 yrsWashington: 16.2 yrs
- 25-year net
- $31,850after paying $23,710
- Sun
- 1,090kWh per kW per year
- Electricity
- 18.2¢1% above U.S. average
A typical SeaTac home, by the numbers
| Utility | Puget Sound Energy |
|---|---|
| Electricity use | 863 kWh a month |
| Best-value system | 8.6 kW, about 20 panels, 9,370 kWh a year (90% of use) |
| Cost | $23,710 |
| First-year savings | $1,592 |
| Payback | 13.5 years |
| Exported power | 13¢/kWh (Puget Sound Energy) |
Cash purchase, no federal credit, 3.8% yearly rate increases. Run it with your own numbers.
Homes in SeaTac
- Owner-occupied homes
- 47%
- Single-family detached
- 42%
- Median home value
- $520k
- Median year built
- 1972
- Population
- 32,414
- Roofs suitable for solar†
- 87%
Census ACS 2020–2024. †Share of 6,584 buildings Google Project Sunroof rated technically suitable (2019 snapshot).
Older housing stock. Many homes here were built before 1975. Have the roof and electrical panel checked before signing; a roof or panel upgrade can add thousands. Roof first?
Installers working in SeaTac
Public installation records for Washington don't name installers, so we can't rank local companies here. Browse installers in Washington.
Always verify the license and get at least three quotes. Compare quotes side by side.
Questions about solar in SeaTac
Is solar worth it in SeaTac, WA?
For a typical home in SeaTac, solar is worth it at 2026 prices: a 8.6 kW system costs about $23,710 after state incentives, saves about $1,592 in year one and pays back in about 13.5 years. Enter your address for an estimate based on your roof and bill.
How much solar power does a system produce in SeaTac?
About 1,090 kWh per year for each kW of panels on a south-facing roof, based on PVWatts and local weather. That's 2% less than the Washington average. East- or west-facing roofs produce roughly 10–20% less.
Who is the electric utility in SeaTac?
Most homes in SeaTac are served by Puget Sound Energy, at about 18.2¢ per kWh on average.
How much do solar panels cost in SeaTac?
A fair cash price is around $2.85 per watt before incentives, so about $23,710 for a 8.6 kW system. There's no federal tax credit for homeowners who buy in 2026.
Nearby
- Burien 13.2 yrs
- Des Moines 12.9 yrs
- Renton 13.9 yrs
- Kent 13.9 yrs
- Mercer Island 13.9 yrs
- Federal Way 13.1 yrs
- Auburn 13.9 yrs
- Seattle 15.9 yrs
- All of Washington
Data: PVWatts (National Laboratory of the Rockies), EIA-861 2025 adjusted to 2026, U.S. Census ACS, LBNL Tracking the Sun, state policy research as of October 2026.