Solar installations in Jefferson County, WI
346 recorded installations in Jefferson County, Wisconsin — 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 4.4 hail (1 severe) and 2.6 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.
Search sites →Independent check:Stanford's DeepSolar detected about 158 solar arrays here from 2018 satellite imagery — our recorded data covers roughly 219% of that. A yardstick, not dated records.
Most active
Top installers in Jefferson County
| # | Installer | Installs here |
|---|---|---|
| 1 | Everlight Solar | 123 |
| 2 | Full Spectrum Solar | 24 |
| 3 | All Energy Solar | 23 |
| 4 | Next Energy | 19 |
| 5 | Midwest Solar Power | 14 |
| 6 | Arch Electric | 12 |
| 7 | Sun Badger Solar | 11 |
| 8 | Freedom Forever | 10 |
| 9 | Home Team Energy | 10 |
| 10 | Wes Engineering | 8 |
Growth
Installations by year
Frequently asked questions
How many homes have solar in Jefferson County?
PanelCensus records 346 solar installations in Jefferson County, Wisconsin (104.2 MW of capacity) — about 0.94% of the county's 36,649 housing units (U.S. Census ACS). Dataset coverage depends on Wisconsin's reporting programs, so the true total is higher.
How much does solar cost in Jefferson County?
The median installed price for recorded systems in Jefferson County is $4.60/W pre-incentive; the median system runs 8.1 kW.
Who installs solar in Jefferson County?
The most active recorded installers in Jefferson County are Everlight Solar, Full Spectrum Solar, All Energy Solar.
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.