WashingtonSolar Incentives 2026: Tax Credits, Rebates & Net Metering
Washington homeowners can reduce solar installation costs by up to 30% through state and federal incentives. With average monthly bills of $110 and 3.8 peak sun hours per day, the average WA homeowner saves $26,200 over 25 years.
State Solar Tax Credit
Washington does not offer a state income tax credit specifically for residential solar. Most homeowners rely on the 30% federal Residential Clean Energy Credit as the primary up-front incentive.
Even without a state income credit, Washington's sales tax exemption on solar equipment significantly reduce effective lifetime cost.
Net Metering in Washington
Washington requires investor-owned utilities to offer net metering on residential solar systems. The credit rate is the full retail electricity rate.
In practice, this means a properly sized Washington system can drive net annual electricity costs to within tens of dollars of zero. Top utilities operating under WA net metering rules include Puget Sound Energy, Seattle City Light, Avista, Pacific Power.
Washington credits exported solar at roughly ~100% of retail of the retail rate. See full Washingtonnet metering rates & rollover rules →
Cost of Solar Panels in Washington (2026)
Solar installs in Washington average $2.85 per watt in 2026. A typical 8 kW system runs about $22,800 before incentives. After the 30% federal credit, the net cost drops to roughly $15,960 — the real number most WA homeowners pay.
Your price moves with system size, roof complexity, and equipment tier. Run the Washington savings calculator for a number matched to your actual electricity bill.
Are Free Solar Panels Real in Washington?
No — there is no government program handing out free solar in Washington. “Free solar” and “no-cost solar program” ads are leases or power purchase agreements (PPAs): a company owns the panels, claims the 30% federal credit for itself, and bills you for the power.
Buying your system — with the incentives in your name — almost always wins on lifetime savings. Read the full breakdown of “free solar” offers →
Utility Rebate Programs
4 major utilities operate in Washington: Puget Sound Energy, Seattle City Light, Avista, Pacific Power. Specific rebate availability varies year to year and is typically distributed first-come, first-served until annual budget caps are reached.
Before scheduling any installation, verify current rebate status directly with your utility — programs open and close throughout the year. Most Washington installers will pull up-to-date rebate data during a site assessment.
Property & Sales Tax Exemptions
Washington does not currently offer a property tax exemption for solar. The added home value from a solar installation is generally included in the next assessment cycle.
Washington also exempts solar equipment from state sales tax, removing roughly 4% to 7% from the up-front cost of panels, inverters, and racking depending on local rate.
How Washington Compares to Neighboring States
Compare Washington's solar incentive package side-by-side with adjacent states to see whether you live in a relatively high- or low-incentive market.
How WA Incentives Work in Detail
Frequently Asked Questions
See your exact Washington solar savings
Plug in your monthly bill and we'll apply every Washington and federal incentive on this page to your real numbers — system size, net cost, payback, and 25-year savings.