Solar by State / Washington
Here's what a typical residential solar system costs in Washington in 2026 — system size, installed price, incentives, production, payback and how to vet local installers.
These estimates assume an average monthly power bill and a system sized to offset roughly 100% of usage. Your cost depends on roof, shading, equipment tier and installer.
Estimated based on the information above and typical solar assumptions for the area. Actual production, pricing, incentives and savings vary by property, utility, installer and financing terms. This is not a quote.
Use the full calculator to enter your own bill, roof size and financing, then compare vetted local installers.
Get solar quotes Calculate my exact costCompanies that publicly list Washington in their service area. We don't yet have verified city-level coverage — confirm your address with each company or get matched.
Tesla's residential solar arm (built on the former SolarCity, acquired by Tesla in 2016). Sells standard solar panels, the integrated Solar Roof, and the Powerwall home battery. Sales and pricing are handled online; installation is done by Tesla crews or certified installers.
Ratings, reviews & certifications: not yet verified
View Tesla Energy profile →A residential solar installer operating across roughly two dozen states, known for an in-house sales-to-install process and a deferred-payment loan structure for the first months after installation.
Ratings, reviews & certifications: not yet verified
View Blue Raven Solar profile →Company details are publicly sourced (company websites and public records) and not independently verified by SolarInstallers.io. Service areas, licensing and pricing change often. How we verify installers →
Options that pair with going solar - financing for a cash purchase, EV charging, and electricity-plan shopping where the market is deregulated.
A typical Washington home solar system runs from a gross installed price in the low-to-mid five figures before incentives, at roughly $2.70-$3.80 per watt. The estimate on this page is sized to an average power bill; your cost depends on roof, shading, equipment and installer.
No statewide solar tax credit or rebate is modeled for this state. Local utility rebates, net-metering terms and tax exemptions vary — check your utility and the DSIRE database for what applies where you live.
It mainly comes down to your electricity rate (about $0.11/kWh here), your sun (3.7 peak hours/day) and the price you're quoted. Run the numbers with your own bill, then compare at least three installer quotes.
Check that the company is licensed and insured in Washington, get the all-in price per watt in writing, compare equipment and warranties, and request several quotes. You can browse Washington installers or get matched.