Solar Panel Costs in Washington (2026)
Avg cost: $2.95/watt | 3.5 sun hours/day | Fair
Washington Solar Overview
$2.95/W
Cost Per Watt
3.5 hrs
Peak Sun Hours
1,200 MW
Installed Capacity
Fair
Solar Rating
A typical 7 kW residential system in Washington costs $24,367 before the federal tax credit and $17,057 after. With 3.5 peak sun hours per day, the system produces approximately 7,154 kWh annually, saving an estimated $1,145/year. The payback period is approximately 14.9 years.
Net Metering in Washington
Available at retail rate for systems under 100 kW
State Incentives & Tax Credits
Federal ITC (30%)
Save $7,310 on a 7 kW system. Available through 2032.
Washington State Incentive
Sales tax exemption for solar equipment; Washington State Clean Energy Fund
Solar Service Costs in Washington
| Service | Low | High | WA Avg |
|---|---|---|---|
| Residential Solar Installation | $17,700 | $35,400 | $26,550 |
| Commercial Solar Installation | $59,000 | $236,000 | $118,000 |
| Battery Storage Installation | $5,900 | $17,700 | $11,800 |
| Solar Panel Removal | $1,770 | $5,900 | $3,540 |
| Solar Panel Cleaning | $177 | $708 | $354 |
| Inverter Replacement | $1,180 | $4,130 | $2,360 |
| Solar Roof Tiles | $47,200 | $88,500 | $64,900 |
| Solar Water Heater | $3,540 | $8,260 | $5,900 |
Top Solar Installers in Washington
- A&R Solar
- Puget Sound Solar
- Sunrun
- Artisan Electric
Always verify NABCEP certification, state licensing, insurance, and customer reviews. Get at least 3 written quotes.