SolarData USA

Solar Energy in Illinois - Installation Data & Costs

Total Installations
61,031
Total Capacity
1,326 MW
Average Cost
$6.90/W

Median: $6.23/W

National Rank
#8

90% residential

14.52¢
Electricity Rate (kWh)
3.9h
Peak Sun Hours/Day
29.2 yrs
Est. Payback Period
$3,588
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
24,712 kWh

Estimates based on average system size, 3.9h peak sun hours/day, 80% derating factor, and 30% federal ITC. Sources: NREL, EIA, 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)

Top Solar Installers in Illinois

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

Most Popular Panel Brands in Illinois

BrandInstallations
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

Solar by County - Illinois

CountyInstallationsCapacity
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

Tax credits, rebates & programs

Is Solar Worth It in Illinois?

Data-backed analysis

Source: