Solar Energy in Napa County, CA (2026)
1 rule for unincorporated Napa County, California.
Verified from official government sources
Note: These county rules apply to unincorporated areas of Napa County. If you live within an incorporated city, that city's own rules apply: see the city list below.
Expedited Solar Permitting
Napa County adopts an expedited, streamlined permitting process for small residential rooftop solar energy systems, removing obstacles and encouraging property owners to install solar.
Napa County Expedited Residential Solar Permits
Few RestrictionsNapa County Code ch. 15.14, Art. III
The purpose of the ordinance is to adopt an expedited, streamlined solar permitting [process for small residential rooftop] solar energy systems. The ordinance encourages the use of solar systems by removing [obstacles to and minimizing the cost of permitting, and protects] the ability of property owners to install solar energy systems.
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