Solar panel cost in Kennewick, WA (2026)
A typical Kennewick home needs about a 9.5 kW system (~24 panels), costing roughly $28,025 upfront. The 30% federal credit ended for purchases on Dec 31, 2025 (a lease/PPA can still pass it through). At 4.19 peak sun hours and Washington's 11.1¢/kWh rate, it pays back in about 21.7 years and saves an estimated $15,827 over 25 years.
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| Annual electricity use | 11,676 kWh |
| Annual solar production | 11,623 kWh |
| Gross system cost | $28,025 |
| Federal tax credit (purchase) | Ended Dec 2025 |
| State / local incentives | — |
| 30% via lease/PPA instead | ~$8,408 value |
| CO₂ avoided per year | 4.1 tons (~68 trees) |
Estimates only — not a quote or financial advice. See our methodology.
What makes Kennewick different
Kennewick (population ~78,896) gets 4.19 peak sun hours per day — that's 10% sunnier than the Washington average of 3.8. More local sunlight means each panel produces a bit more energy, improving payback. 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 | 4.19 hrs/day |
| Recommended system size | 9.5 kW (~24 panels) |
| Installed price per watt | $3/W |
| Gross system cost | $28,025 |
| Federal tax credit (purchase) | Ended Dec 31, 2025 |
| State / local incentives | — |
| Net cash cost | $28,025 |
| 30% credit via lease/PPA | ~$8,408 value |
| Annual energy produced | 11,623 kWh |
| Estimated year-1 savings | $1,290 |
| Payback period | 21.7 years |
| 25-year net savings | $15,827 |
| 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 Kennewick, WA
See actual prices from vetted local installers — including lease and PPA options that still capture the 30% credit in 2026. Free, no obligation.