The Average Cost of Solar in Washington State
For a standard single-family home in Washington requiring an 8kW system, the gross cost typically ranges from $24,000 to $29,000. Let's break down the actual net cost after applying the sales tax exemption and the federal tax credit.
Metric | Estimated Value (8kW System) |
|---|---|
Gross System Cost | $26,000 |
Washington Sales Tax (approx. 9.5% avg) | $0 (100% Exempt) |
Federal Tax Credit (30%) | -$7,800 |
Estimated Net Cost | $18,200 |





