Solar installer

EFS Energy

Installed solar on 109 homes since 2023 in Illinois. Latest install on record: August 2026.

Homes since 2023: 109
Median price: —
Typical system: —
Leased or PPA: —

Price

Public records don’t show enough systems bought outright from EFS Energy (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.

St. Clair County, IL · 43 Madison County, IL · 18 Monroe County, IL · 13 Washington County, IL · 8 Sangamon County, IL · 6 Champaign County, IL · 5 Macoupin County, IL · 3 Marion County, IL · 2 Randolph County, IL · 2 Bond County, IL · 1 Clinton County, IL · 1 De Witt County, IL · 1 Jackson County, IL · 1 Jersey County, IL · 1 Mercer County, IL · 1 Moultrie County, IL · 1 Perry County, IL · 1 Scott County, IL · 1

By state

State	Homes	Median
Illinois	109	—

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.