Is Solar Worth It in Washington?
Yes — solar can be worthwhile in Washington.
State incentives and net metering support payback in 8–11 years; western Washington is cloudier, eastern Washington has stronger sun.
Average Cost of Solar in Washington (2026)
The total cost of a residential solar system depends on system size, roof type, and installer pricing.
Typical 6–8 kW system:
- Average cost before incentives: $15,000 – $22,000
- Federal tax credit (30%): -$4,500 – $6,600
- Average net cost after federal credit: $10,500 – $15,400
The federal 30% Residential Clean Energy Credit is administered through the Internal Revenue Service.
Typical systems are 6–8 kW.
Solar Incentives in Washington
1. Federal Solar Tax Credit (30%)
30% of installation costs deductible from federal taxes.
2. Net Metering
Washington has net metering; terms vary by utility.
3. State Incentives
Washington has had incentive programs. Check DSIRE or state energy office.
Electricity Rates in Washington
Washington rates are often below the national average in many areas.
A typical Washington homeowner spends $1,100–$1,700 per year on electricity.
Solar can offset most or all of this cost.
Payback Period in Washington
Most homeowners see:
- Payback period: 8–11 years
- 25-year savings: $20,000–$48,000+
Savings depend on roof orientation, local utility rates, system size, and financing method.
Best Cities for Solar in Washington
Solar performs well statewide, but adoption is strongest in:
- Seattle
- Spokane
- Tacoma
- Vancouver
- Bellevue
Suburban homes with south-facing roofs tend to achieve the highest ROI.
Is Solar Worth It in Washington? (Summary)
Solar makes the most sense if:
- You plan to stay 8+ years
- Your roof has good sun
- You qualify for the federal tax credit
Solar makes sense for homeowners with good exposure, especially in sunnier areas.
How to Calculate Your Washington Solar Savings
Every home is different.
To get a personalized estimate, use the calculator on this page: enter your ZIP, monthly bill, and optional system size to see projected savings and payback.