Solar panel cost in Federal Way, WA (2026)
A typical Federal Way home needs about a 11.3 kW system (~28 panels), costing roughly $33,335 upfront. The 30% federal credit ended for purchases on Dec 31, 2025 (a lease/PPA can still pass it through). At 3.54 peak sun hours and Washington's 11.1¢/kWh rate, it pays back in about 25.8 years and saves an estimated $10,585 over 25 years.
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Preset to Federal Way's local sunlight. Adjust your monthly bill for a personalized estimate.
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| Annual electricity use | 11,676 kWh |
| Annual solar production | 11,681 kWh |
| Gross system cost | $33,335 |
| Federal tax credit (purchase) | Ended Dec 2025 |
| State / local incentives | — |
| 30% via lease/PPA instead | ~$10,001 value |
| CO₂ avoided per year | 4.1 tons (~68 trees) |
Estimates only — not a quote or financial advice. See our methodology.
What makes Federal Way different
Federal Way (population ~95,171) gets 3.54 peak sun hours per day — that's 7% less sunny than the Washington average of 3.8. Slightly less local sunlight means panels produce a touch less than the state average, so sizing and orientation matter. Electricity rates, net metering, and incentives are set at the Washington level: residents pay about 11.1¢/kWh, and full net metering + sales tax exemption.
| City peak sun hours | 3.54 hrs/day |
| Recommended system size | 11.3 kW (~28 panels) |
| Installed price per watt | $3/W |
| Gross system cost | $33,335 |
| Federal tax credit (purchase) | Ended Dec 31, 2025 |
| State / local incentives | — |
| Net cash cost | $33,335 |
| 30% credit via lease/PPA | ~$10,001 value |
| Annual energy produced | 11,681 kWh |
| Estimated year-1 savings | $1,292 |
| Payback period | 25.8 years |
| 25-year net savings | $10,585 |
| CO₂ avoided per year | 4.1 tons (~68 trees) |
Compare with the Washington state average (10.5 kW, $30,975 net, 24-yr payback). Modeled estimates, June 2026 — not a quote. See methodology.
Compare real solar quotes in Federal Way, WA
See actual prices from vetted local installers — including lease and PPA options that still capture the 30% credit in 2026. Free, no obligation.