Solar Energy in Grant County, WA (2026)
1 rule for unincorporated Grant County, Washington.
Verified from official government sources
Note: These county rules apply to unincorporated areas of Grant County. If you live within an incorporated city, that city's own rules apply: see the city list below.
Panel Permits
A solar energy facility in unincorporated Grant County must clear a 7% maximum slope test with a full topographic survey, stay under 20 feet tall, set back 100 feet from any off-site residence, and its developer must sign a Development Agreement with the county under Unified Development Code § 23.08.357.
Grant County Solar Energy Facility Permits
Significant RestrictionsGrant County Unified Development Code § 23.08.357(c), (d), (e), (i)
(c)Solar Energy Facilities shall not be allowed on sites or portions of sites with an existing average slope greater than seven percent (7%). Each solar energy facility submitted for permit consideration shall include a full topographic survey of the site with 2-foot contour intervals. The topographic survey shall delineate all portions of the site greater than 7-percent slope.(d)Maximum struct...
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