Solar Panel Installation Cost in Washington
Cost to install a residential solar panel system, before incentives.
Low$14,640
Average$26,840
High$43,920
Washington-adjusted range, price per total project
Low$14,640
Average$26,840
High$43,920
Overview
Solar panel system cost is typically priced per watt and depends on system size (kW), panel efficiency, and whether battery storage is included. Federal and local incentives can significantly reduce the net cost.
Why Washington prices differ
States with strong solar incentive programs and high electricity rates see faster payback periods; sunnier regions can use smaller, cheaper systems for the same output.
Frequently asked questions
How long does it take for solar panels to pay for themselves?
Payback period is typically 6-12 years depending on system cost, local electricity rates, and available incentives.
Solar Panel Installation cost by city in Washington
| City | Low | Average | High |
|---|---|---|---|
| Seattle | $15,360 | $28,160 | $46,080 |