Solar installations in Jefferson County, IL
177 recorded installations in Jefferson County, Illinois — 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 3.8 hail and 2.9 high-wind NOAA storm events — a regional inspection/maintenance signal (proximity, not confirmed damage).
Search every recorded installation in Jefferson County by installer, size, date and equipment.
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Top installers in Jefferson County
No resolved installers recorded in this county.
Growth
Installations by year
Frequently asked questions
How many homes have solar in Jefferson County?
PanelCensus records 177 solar installations in Jefferson County, Illinois (20.6 MW of capacity) — about 1.1% of the county's 16,650 housing units (U.S. Census ACS). Dataset coverage depends on Illinois's reporting programs, so the true total is higher.
How much does solar cost in Jefferson County?
Not enough priced records in this county to compute a reliable median.
Who installs solar in Jefferson County?
No resolved installers recorded in this county.
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.