Solar Energy Data for Washington
Detailed solar irradiance and production data for 1 cities in Washington. The state averages 5.0 kWh/m²/day GHI — Average solar resources.
Washington near the national average for solar energy production. Solar installations are economically viable across most of Washington, particularly where electricity rates are above the national average.
Washington Overview
- Cities with data
- 1
- Avg. GHI
- 5.0 kWh/m²/day
- Solar Rating
- Average
- Best City
- Seattle (5.0 kWh/m²/d)
Cities in Washington — Ranked by Solar Potential
1 cities| Rank | City | GHI (kWh/m²/d) | Peak Sun Hours | 5kW Production | Est. Annual Savings | Payback |
|---|---|---|---|---|---|---|
| #1 | Seattle (pop. 737,255) | 5.0 | 5.8 | 8,468 kWh | $906 | 11.6 yrs |
Analyze any Washington location
These figures are city-level averages. For your exact address in Washington, use SolarScope's Site Studio to account for roof orientation, shading, and your utility rate.