Solar installer

Windfree Solar

Installed solar on 292 homes since 2023 in 2 states. Installing since 2021. Latest install on record: September 2026.

Homes since 2023: 292
Median price: —
Typical system: 13.6 kW
Leased or PPA: —

Price

Public records don’t show enough systems bought outright from Windfree Solar (at least 10) for a price. Ask for a quote in dollars per watt to compare it with the Illinois median.

Where it installs

Counties with homes it installed since 2023, busiest first.

Cook County, IL · 161 DuPage County, IL · 37 Lake County, IL · 27 Kane County, IL · 26 Will County, IL · 12 McHenry County, IL · 5 DeKalb County, IL · 4 Peoria County, IL · 4 Champaign County, IL · 3 Kendall County, IL · 3 Tazewell County, IL · 2 Coles County, IL · 1 Kankakee County, IL · 1 Livingston County, IL · 1 Mercer County, IL · 1 Racine County, WI · 1 St. Clair County, IL · 1 Walworth County, WI · 1 Whiteside County, IL · 1

By state

State	Homes	Median
Illinois	290	—
Wisconsin	2	—

Homes installed since 2023.

Installed prices and installers from public installation records: Lawrence Berkeley National Laboratory’s Tracking the Sun (systems installed through 2025) and state program files from California, New York, New Jersey, Connecticut, Illinois and Oregon, which run into 2026. Prices are in dollars per watt of panel capacity (DC), before rebates and tax credits, for homes that bought their system; leased systems and systems with batteries are left out.