Solar installations in Dunn County, WI
159 recorded installations in Dunn County, Wisconsin — capacity, prices and the installers doing the work.
At a glance
Dunn County, Wisconsin has 159 recorded solar installations totalling 7.1 MW of capacity — the 39th-highest count among the 72 Wisconsin counties with records, and under 1% of the state total. That is about 0.84% of the county's 18,812 housing units, against 0.83% statewide. The median installed price is $2.97/W before incentives, about 16% below the Wisconsin median of $3.52/W.
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 2.8 hail and 2.9 high-wind NOAA storm events — a regional inspection/maintenance signal (proximity, not confirmed damage).
Search every recorded installation in Dunn County by installer, size, date and equipment.
Search sites →Independent check:Stanford's DeepSolar detected about 86 solar arrays here from 2018 satellite imagery — our recorded data covers roughly 185% of that. A yardstick, not dated records.
Most active
Top installers in Dunn County
| # | Installer | Installs here |
|---|---|---|
| 1 | Olson Solar Energy | 32 |
| 2 | Next Step Energy | 15 |
| 3 | All Energy Solar | 10 |
| 4 | Full Spectrum Solar | 9 |
| 5 | Jolma Electric | 4 |
| 6 | Energy Concepts Nm | 3 |
| 7 | Minnsolar | 2 |
| 8 | Able Energy | 2 |
| 9 | Bear Valley Electric | 2 |
| 10 | Hh Solar Energy Services | 2 |
Growth
Installations by year
How does Dunn County compare with the rest of Wisconsin?
The median recorded system in Dunn County is 8.08 kW, roughly in line with the state median of 7.4 kW. By share of housing units with a recorded system, Dunn County ranks 24th of 70 Wisconsin counties with at least 10 installations.
How has solar adoption changed in Dunn County?
The earliest recorded installation in Dunn County dates to 2004. The busiest year on record is 2023, with 31 installations. 2025 has 5 recorded installations so far. The county's cumulative total rose from 57 at the end of 2020 to 159 today. Recent years fill in as state programs and permit offices report, so the latest counts are provisional.
Who installs solar in Dunn County?
Olson Solar Energy has the most recorded installations in Dunn County (32, 20% of the county's records). Other active installers here include Next Step Energy, All Energy Solar and Full Spectrum Solar. Installers based anywhere in Wisconsin are listed in the state installer directory.
Frequently asked questions
How many homes have solar in Dunn County?
PanelCensus records 159 solar installations in Dunn County, Wisconsin (7.1 MW of capacity) — about 0.84% of the county's 18,812 housing units (U.S. Census ACS). Coverage depends on Wisconsin's public reporting, so the true total is likely higher.
How much does solar cost in Dunn County?
The median installed price for recorded systems in Dunn County is $2.97/W before incentives; the median system is 8.1 kW. The Wisconsin median is $3.52/W.
Who installs solar in Dunn County?
The most active recorded installers in Dunn County are Olson Solar Energy (32), Next Step Energy (15) and All Energy Solar (10).
How big is a typical solar system in Dunn County?
The median recorded system in Dunn County is 8.1 kW, against 7.4 kW for Wisconsin as a whole.
More solar data near Dunn County
- Solar in Wisconsin· 22,775 installations
- Solar installers in Wisconsin
- Solar in Calumet County· 184 installations
- Solar in Polk County· 178 installations
- Solar in Chippewa County· 163 installations
- Solar in Manitowoc County· 149 installations
- Solar in Adams County· 127 installations
- Solar in Clark County· 122 installations
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.
About this data
Source: Lawrence Berkeley National Laboratory's Tracking the Sun, merged with city permit records, state incentive programs and the USGS U.S. Large-Scale Solar Photovoltaic Database / EIA-860 plant registers, as published October 10, 2026 — PanelCensus refreshes it as each source publishes new records. See the methodology for how records are matched, cleaned and scored.
Cite as: PanelCensus, “Solar installations in Dunn County, Wisconsin”, https://panelcensus.com/solar/wisconsin/dunn-county (data as of October 10, 2026).