Solar installations in Napa County, CA
8,774 recorded installations in Napa County, California — capacity, prices and the installers doing the work.
Dataset updated . Refreshed from LBNL's Tracking the Sun public releases.
Most active
Top installers in Napa County
| # | Installer | Installs here |
|---|---|---|
| 1 | Tesla Energy | 1,183 |
| 2 | Sunrun | 1,049 |
| 3 | Green Stock Solar | 404 |
| 4 | Sunpower | 316 |
| 5 | Ambrose Solar | 226 |
| 6 | V3 Electric | 192 |
| 7 | Citadel Roofing And Solar | 186 |
| 8 | Solarcraft Services | 183 |
| 9 | High Definition Solar Construction | 174 |
| 10 | Semper Solaris | 161 |
Growth
Installations by year
Frequently asked questions
How many homes have solar in Napa County?
The Tracking the Sun dataset records 8,774 solar installations in Napa County, California (104.6 MW of capacity). Dataset coverage depends on California's reporting programs, so the true total is higher.
How much does solar cost in Napa County?
The median installed price for recorded systems in Napa County is $4.52/W pre-incentive; the median system runs 6 kW.
Who installs solar in Napa County?
The most active recorded installers in Napa County are Tesla Energy, Sunrun, Green Stock Solar.
County assignment is derived from installation ZIP codes via the Census 2020 ZCTA↔county crosswalk (primary county by land-area overlap) — approximate at county boundaries. See methodology.