Solar installations in Contra Costa County, CA
86,930 recorded installations in Contra Costa 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 Contra Costa County
| # | Installer | Installs here |
|---|---|---|
| 1 | Tesla Energy | 15,036 |
| 2 | Sunrun | 12,759 |
| 3 | Sunpower | 5,759 |
| 4 | Petersendean | 2,041 |
| 5 | Bright Ops | 1,736 |
| 6 | Citadel Roofing And Solar | 1,627 |
| 7 | West Coast Solar | 1,615 |
| 8 | Freedom Forever | 1,412 |
| 9 | Semper Solaris | 1,384 |
| 10 | Sungevity Development | 1,323 |
Growth
Installations by year
Frequently asked questions
How many homes have solar in Contra Costa County?
The Tracking the Sun dataset records 86,930 solar installations in Contra Costa County, California (670.9 MW of capacity). Dataset coverage depends on California's reporting programs, so the true total is higher.
How much does solar cost in Contra Costa County?
The median installed price for recorded systems in Contra Costa County is $4.31/W pre-incentive; the median system runs 5.8 kW.
Who installs solar in Contra Costa County?
The most active recorded installers in Contra Costa County are Tesla Energy, Sunrun, Sunpower.
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.