Washington · Tax exemption
WA Solar Property Tax Exemption
Removes a tax burden residential solar owners in Washington would otherwise carry -- see what it covers, eligibility, and payback impact below.
- Property tax exemption
- stated benefit
- Residential
- eligible customers
- 26.6 yr
- Washington baseline payback
- 3
- other Washington programs
What it means
In Washington, a 6 kW system already pays back in about 26.6 years on ~$644/year of modeled savings, and the WA Solar Property Tax Exemption stacks on top of that, on top of any federal credit.
- Property tax e…
- stated benefit
- 26.6 yr
- baseline payback (pre-incentive)
- 4
- Washington programs that stack
- full
- net-metering policy
Payback and savings are modeled from public NREL/EIA data; the program benefit is summarized from DSIRE and may change.
Program description
Washington provides a property tax exemption for qualifying solar energy systems.
Program at a glance
- Program type
- Tax exemption
- Eligible customers
- Residential
- Stated benefit
- Property tax exemption
- State electricity rate
- 10.5¢/kWh
- Washington solar score
- 14/100
How Washington compares to the U.S. average
Why this incentive matters more (or less) here - Washington's solar fundamentals against the national average.
Source: NREL irradiance and U.S. EIA rates; payback modeled by PlainSolarData. Bars are scaled to the larger of the two values per metric.
Solar's trajectory in Washington
The market this incentive operates in: total installed solar capacity in Washington reported to the EIA.
Washington's solar incentive stack
How this tax exemption sits among Washington's 3 tracked programs, by type
- Tax exemption
Tax exemption
2 programs
- Net metering
Net metering
1 programs
What this shows Washington tracks 2 incentive types; 2 are tax exemptions like this one, removing a cost solar owners would otherwise carry, on top of the state's other program types.
How this incentive fits Washington's solar picture
The WA Solar Property Tax Exemption removes a tax burden solar owners would otherwise carry, one of Washington's DSIRE-tracked solar incentive programs. Eligibility is scoped to residential customers, with a stated benefit of Property tax exemption. DSIRE lists no scheduled sunset, though enabling legislation and appropriations can still be revised year to year.
That baseline is slower than most states, which raises the stakes for every incentive on the table. Washington averages 3.5 kWh/m²/day of usable sunlight and residential rates of 10.5¢/kWh, producing an estimated 6,132 kWh/year and $644 of annual utility offset on a typical 6 kW system costing $17,100. That baseline already implies a 26.6-year simple payback and a 25-year modeled net of roughly $-1,000 before this incentive - every dollar this tax exemption delivers compresses that payback further.
A handful of other levers are worth checking alongside this one. Washington has 4 solar incentive programs indexed in DSIRE, including adjacent options like WA Solar Sales Tax Exemption, WA Net Metering. The state's net-metering policy is classified as full, which governs how excess generation is credited and often decides whether a given program is worth claiming for a specific household.
Your next step
- See Washington's full solar profile, score, irradiance, rates, payback, and every program you can claim. Washington solar data
- Run the savings calculator with your real bill to see how this incentive changes your own payback. ROI calculator
- Read how state and federal solar credits work together. Tax-credit guide
Estimates here are modeled from public data and are not financial advice; confirm program terms and your own eligibility before relying on a dollar figure.
Other Washington incentives
Frequently asked questions
What is the WA Solar Property Tax Exemption?
How does the WA Solar Property Tax Exemption work?
Who is eligible for the WA Solar Property Tax Exemption?
How does this incentive affect solar ROI in Washington?
Are there other solar incentives in Washington?
Incentive data from the DSIRE (Database of State Incentives for Renewables & Efficiency); state solar economics from NREL and the U.S. EIA. See our methodology.