Solar Panels in Washington may sound surprising in a state famous for rainy weather, but Washington still averages 170–180 sunny days annually. Combined with high electricity rates and strong incentives, solar adoption is growing quickly.
Cost of solar panels in Washington
Residential systems typically cost $13,000 to $23,000 before incentives. Price per watt averages $2.6–3.0. A typical household using 700–1,000 kWh monthly often installs a 5–7 kW system.
Incentives and programs
Washington provides attractive benefits for solar owners:
- Federal Solar Tax Credit (30%).
- State sales tax exemption on solar systems up to 100 kW.
- Utility rebate programs in select regions.
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Net metering in Washington
Utilities must offer net metering at retail rates for systems up to 100 kW. Excess credits roll over month to month, helping maximize ROI.
Payback and ROI
With incentives and high electricity prices (around $0.19 per kWh in 2025), payback averages 8–11 years. Lifetime savings can reach $25,000–$35,000.
FAQ
How much do solar panels cost in Washington? About $2.8 per watt.
Are there state incentives? Yes — sales tax exemptions and utility rebates.
Is solar worth it in Washington’s climate? Yes — long summer days generate strong output.
How long do Aptos panels last? 25+ years.
Conclusion
Washington proves solar works even in cloudy states. Incentives and fair net metering make solar profitable, and Aptos panels provide long-term reliability.