MySolarCheck

Solar Panel Cost & Installation Data in Illinois

Observed Records
61,031
Reported Capacity
1,326 MW
Observed Avg Cost
$6.90/W

Median: $6.23/W

Dataset Rank
#8

90% residential

15.87¢
Residential Rate (EIA 2024)
3.9h
Peak Sun Hours/Day
35.5 yrs
Est. Payback Period
$4,216
Est. Annual Savings

Environmental & Community Impact

CO₂ Offset/Year
1,481,956 tons
CO₂ Offset/System/Year
17.5 tons
Installations per 10K Residents
47.8
State Population
12,757,634
Est. Annual Production/System
26,565 kWh

Estimates use average system size, a 3.9h/day state solar-resource proxy and a 14% system-loss assumption. Payback excludes financing and incentives. Context sources: NREL, EIA and EPA eGRID (0.709 metric tons CO₂/MWh).

System Overview

Avg System Size
21.7 kW
Third-Party Owned
47.2%

Cost Trend ($/W)

Avg Cost per Watt

200020022004200620082010201220142016

Installation Growth (Last 5 Years)

Installer Names in the Source Records

InstallerObserved Records
-160,622
Solarcraft Services49
Kapital Electric Company39
Ailey Electric33
Solar Energy Of Illinois25
Self24
Earth Wind And Solar24
Renewable Energy Alternatives17
Straightup Solar15
noMatch14

Panel Brands in the Source Records

BrandObserved Records
Alps Technology59,939
-1561
SolarWorld94
Sharp84
REC Solar19
LG Electronics Inc.19
Lifeline Energy18
SunPower17
Amerisolar-Worldwide Energy and Manufacturing USA Co., Ltd 16
Suntech Power15

County Records - Illinois

CountyObserved RecordsReported Capacity
Cook14,340163.8 MW
Lake4,42665.6 MW
DuPage3,83852.4 MW
Will3,83275.8 MW
Kane2,65438.6 MW
Winnebago2,42051.5 MW
McHenry2,07550.4 MW
Champaign1,47441.2 MW
Kendall1,28317.8 MW
Tazewell1,18022.9 MW
Madison1,16030.8 MW
Peoria1,02824.6 MW
St. Clair1,02330.7 MW
Boone72913.1 MW
DeKalb71930.1 MW

Illinois Solar Incentives

State-program snapshot

Is Solar Worth It in Illinois?

Modeled homeowner analysis

Primary dataset: LBNL Tracking the Sun 2024 release. Counts represent records in the source release, not a complete statewide census.