Solar installations in Alameda County, CA
84,947 recorded installations in Alameda 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.
Search every recorded installation in Alameda County by installer, size, date and equipment.
Search sites →Independent check:Stanford's DeepSolar detected about 45,467 solar arrays here from 2018 satellite imagery — our recorded data covers roughly 187% of that. A yardstick, not dated records.
Most active
Top installers in Alameda County
| # | Installer | Installs here |
|---|---|---|
| 1 | Tesla | 15,787 |
| 2 | Sunrun | 9,551 |
| 3 | Sunpower | 6,652 |
| 4 | Petersendean | 2,143 |
| 5 | Your Energy Solutions | 2,070 |
| 6 | Semper Solaris | 1,735 |
| 7 | Sungevity | 1,640 |
| 8 | Citadel Roofing And Solar | 1,334 |
| 9 | Infinity Energy | 1,291 |
| 10 | Better Earth | 1,229 |
Growth
Installations by year
Frequently asked questions
How many homes have solar in Alameda County?
PanelCensus records 84,947 solar installations in Alameda County, California (784.4 MW of capacity) — about 13.5% of the county's 630,726 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 Alameda County?
The median installed price for recorded systems in Alameda County is $4.36/W pre-incentive; the median system runs 5 kW.
Who installs solar in Alameda County?
The most active recorded installers in Alameda 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.