Solar Panel Cost in Spokane, WA (2026)
Solar panel costs in Spokane, WA typically run below the Washington state average. A 6 kW system in Spokane costs about $18,100 before the 30% federal ITC, with payback around 15.8 years at local utility rates.
Quick answer
In Spokane, a 6 kW solar panel system costs about $18,100 installed (15.8-year payback). After the 30% federal tax credit, net cost is roughly $12,700. Annual savings: ~$820/year at 11¢/kWh.
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Estimate for Washington
$8,600net after 30% ITC
~4 kW · 10 panels · $12,300 before credits · 11¢/kWh
Annual savings
$546
Payback
15.8 yrs
25-year savings
$14,340
25-year savings timeline
Includes ~3% utility rate growth & 0.5%/yr panel degradation
Spokane vs US Average
| Metric | WA | US avg |
|---|---|---|
| 6 kW system (before credit) | $18,100 | $16,271 |
| Net cost after 30% ITC | $12,700 | $11,390 |
| Cost per watt | $0.00/W | — |
| Annual electricity savings | $820 | $1,335 |
| Payback period (years) | 15.8 yrs | 9 yrs |
| Electricity rate | 11¢/kWh | — |
Updated 2026-07-07. Estimates only.
What affects solar costs in Spokane?
Spokane metro solar pricing runs 5–10% below the Washington state average, reflecting local labor, permitting, and installer competition. Solar installation costs in Washington reflect local labor rates, permit fees, and utility interconnection rules. A typical 6 kW system runs $14,410–$25,410 before the 30% federal tax credit, with net cost around $10,090–$17,790.
Spokane homeowners should compare at least three local quotes specifying panel brand, inverter type, and production guarantee. Washington averages 11.0¢/kWh and 4.0 peak sun hours per day — moderate solar production potential for rooftop systems.
Utility rules in Washington affect how solar credits apply to your bill — verify net metering or buyback terms for your specific provider serving Spokane.
Spokane solar ROI depends on Washington electricity rates, local install competition, and roof suitability. Washington install costs average $3.08/W with estimated 15.8-year payback on a 6 kW system — above US national averages.
Spokane solar snapshot
- 6 kW system: $14,100 – $24,900
- After 30% ITC: $12,700
- Electric rate: 11¢/kWh · Peak sun: 4 hrs/day
- Payback: ~15.8 years · Annual savings: ~$820
How to maximize solar ROI in Spokane
- Compare Spokane installer quotes on cost per watt ($/W)
- Check Washington incentives — state guide
- Review how to choose installers in Washington
- Compare at least three installer quotes in Washington
- Model payback using your actual utility rate and usage
Frequently Asked Questions
How much do solar panels cost in Spokane?
A 6 kW solar system in Spokane, WA typically costs $14,100–$24,900 before incentives, or $12,700 after the 30% federal tax credit.
Is solar worth it in Spokane?
With 11¢/kWh electricity rates and 4 peak sun hours, Spokane homeowners often see 15.8-year payback. Use our calculator for your roof and usage.
How does Spokane compare to Washington?
Spokane install pricing is among the more affordable metros in Washington.
Related pages
How We Calculate Solar Costs
MySunROI estimates combine NREL residential PV installed-price benchmarks, EIA state electricity rates, and regional labor modifiers — updated 2026-07-07.
Estimates only. Last updated 2026-07-07. Estimates based on NREL PV cost benchmarks, EIA electricity rates, and 2026 installer pricing surveys.