Solar installations in St. Mary's County, MD
315 recorded installations in St. Mary's County, Maryland — 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 7 hail and 9 high-wind NOAA storm events — a regional inspection/maintenance signal (proximity, not confirmed damage).
Search every recorded installation in St. Mary's County by installer, size, date and equipment.
Search sites →Independent check:Stanford's DeepSolar detected about 1,294 solar arrays here from 2018 satellite imagery — our recorded data covers roughly 24% of that (this county is under-reported in public program data). A yardstick, not dated records.
Most active
Top installers in St. Mary's County
| # | Installer | Installs here |
|---|---|---|
| 1 | redacted | 312 |
Growth
Installations by year
Frequently asked questions
How many homes have solar in St. Mary's County?
PanelCensus records 315 solar installations in St. Mary's County, Maryland (4.1 MW of capacity) — about 0.68% of the county's 46,078 housing units (U.S. Census ACS). Dataset coverage depends on Maryland's reporting programs, so the true total is higher.
How much does solar cost in St. Mary's County?
The median installed price for recorded systems in St. Mary's County is $3.30/W pre-incentive; the median system runs 12.6 kW.
Who installs solar in St. Mary's County?
The most active recorded installers in St. Mary's County are redacted.
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.