Solar installations in San Mateo County, CA
31,278 recorded installations in San Mateo County, California — capacity, prices and the installers doing the work.
Dataset updated . Sources: LBNL Tracking the Sun + city permit records + state programs + USGS/EIA utility-scale.
Severe-weather exposure: solar sites here have been matched to an average of 0 hail and 3.1 high-wind NOAA storm events — a regional inspection/maintenance signal (proximity, not confirmed damage).
Search every recorded installation in San Mateo County by installer, size, date and equipment.
Search sites →Independent check:Stanford's DeepSolar detected about 16,009 solar arrays here from 2018 satellite imagery — our recorded data covers roughly 195% of that. A yardstick, not dated records.
Most active
Top installers in San Mateo County
| # | Installer | Installs here |
|---|---|---|
| 1 | Tesla | 6,540 |
| 2 | Sunrun | 3,087 |
| 3 | Sunpower | 1,283 |
| 4 | Cobalt Power Systems | 1,097 |
| 5 | Semper Solaris | 880 |
| 6 | Clean Solar | 785 |
| 7 | Rockin Roofers | 662 |
| 8 | Petersendean | 524 |
| 9 | Bay Area Energy Solutions | 381 |
| 10 | Nrg Clean Energy | 349 |
Growth
Installations by year
Frequently asked questions
How many homes have solar in San Mateo County?
PanelCensus records 31,278 solar installations in San Mateo County, California (310.4 MW of capacity) — about 11.0% of the county's 285,558 housing units (U.S. Census ACS). Dataset coverage depends on California's reporting programs, so the true total is higher.
How much does solar cost in San Mateo County?
The median installed price for recorded systems in San Mateo County is $4.65/W pre-incentive; the median system runs 5.7 kW.
Who installs solar in San Mateo County?
The most active recorded installers in San Mateo County are Tesla, 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. Market penetration = recorded installations ÷ housing units (U.S. Census Bureau ACS 5-Year, Table B25001); it undercounts where dataset coverage is partial. See methodology.