Washington has 7 solar farms: 0.1% of the US total of 6,611. That ranks #45 by count and #49 per person (0.09 per 100,000 residents) of 51.
Source: U.S. Large-Scale Solar Photovoltaic Database v4.0 (USGS, Lawrence Berkeley National Laboratory), 2026. Every ground-mounted facility of 1 MW or more in the database, at its own coordinates. Rooftop and small community solar are not in this database.
Licence: U.S. government data: no copyright, free to reuse
Local blogs, news sites, parks pages: embed the live interactive map with one snippet. Attribution stays on, that's the whole deal.
<iframe src="https://get-instamaps.com/embed/rankings/solar-farms/washington" width="100%" height="440" style="border:2px solid #111" loading="lazy" title="Washington solar farms map — InstaMaps"></iframe>Goose Prairie Solar · Horn Rapids Solar, Storage and Training · Lund Hill Solar · Adams Nielson Solar · Penstemon Solar Project · Urtica Solar Project · Camas Solar Project
"Washington has 7 solar farms, #45 in the US by count and #49 per person (U.S. Large-Scale Solar Photovoltaic Database v4.0, 2026, mapped by InstaMaps)." Free to quote with a link to this page. Population: US Census 2024 estimates.