Solar installations in Waukesha County, WI
1,165 recorded installations in Waukesha County, Wisconsin — capacity, prices and the installers doing the work.
At a glance
Waukesha County, Wisconsin has 1,165 recorded solar installations totalling 20.1 MW of capacity — the 3rd-highest count among the 72 Wisconsin counties with records, and 5% of the state total. That is about 0.67% of the county's 173,567 housing units, against 0.83% statewide. The median installed price is $3.60/W before incentives, roughly in line with 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 5.1 hail (1 severe) and 3.9 high-wind NOAA storm events — a regional inspection/maintenance signal (proximity, not confirmed damage).
Search every recorded installation in Waukesha County by installer, size, date and equipment.
Search sites →Independent check: Stanford's DeepSolar detected about 923 solar arrays here from 2018 satellite imagery — our recorded data covers roughly 126% of that. A yardstick, not dated records.
Most active
Top installers in Waukesha County
| # | Installer | Installs here |
|---|---|---|
| 1 | Everlight Solar | 162 |
| 2 | Arch Electric | 127 |
| 3 | Home Team Energy | 118 |
| 4 | All Energy Solar | 105 |
| 5 | Current Electric | 103 |
| 6 | Sun Badger Solar | 93 |
| 7 | Sunvest Solar | 67 |
| 8 | Next Energy | 51 |
| 9 | Tron Solar | 32 |
| 10 | Endries Solar Electric | 23 |
Growth
Installations by year
How does Waukesha County compare with the rest of Wisconsin?
The median recorded system in Waukesha County is 8.16 kW, about 10% above the state median of 7.4 kW. By share of housing units with a recorded system, Waukesha County ranks 36th of 70 Wisconsin counties with at least 10 installations.
How has solar adoption changed in Waukesha County?
The earliest recorded installation in Waukesha County dates to 2002. The busiest year on record is 2023, with 213 installations. 2025 has 149 recorded installations so far. The county's cumulative total rose from 329 at the end of 2020 to 1,165 today. Recent years fill in as state programs and permit offices report, so the latest counts are provisional.
Who installs solar in Waukesha County?
Everlight Solar has the most recorded installations in Waukesha County (162, 14% of the county's records). Other active installers here include Arch Electric, Home Team Energy and All Energy Solar. Installers based anywhere in Wisconsin are listed in the state installer directory.
Frequently asked questions
How many homes have solar in Waukesha County?
PanelCensus records 1,165 solar installations in Waukesha County, Wisconsin (20.1 MW of capacity) — about 0.67% of the county's 173,567 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 Waukesha County?
The median installed price for recorded systems in Waukesha County is $3.60/W before incentives; the median system is 8.2 kW. The Wisconsin median is $3.52/W.
Who installs solar in Waukesha County?
The most active recorded installers in Waukesha County are Everlight Solar (162), Arch Electric (127) and Home Team Energy (118).
How big is a typical solar system in Waukesha County?
The median recorded system in Waukesha County is 8.2 kW, against 7.4 kW for Wisconsin as a whole.
More solar data near Waukesha County
- Solar in Wisconsin· 22,775 installations
- Solar installers in Wisconsin
- Solar in Dane County· 5,697 installations
- Solar in Milwaukee County· 1,664 installations
- Solar in La Crosse County· 1,062 installations
- Solar in Rock County· 667 installations
- Solar in Sauk County· 565 installations
- Solar in Eau Claire County· 548 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 19, 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 Waukesha County, Wisconsin”, https://panelcensus.com/solar/wisconsin/waukesha-county (data as of October 19, 2026).