This is the 2021 list of Top Solar Contractors completing work in Illinois. The kilowatts listed as being installed in the state reflect only kilowatts installed in Illinois in 2020. Companies listed on this state list could be headquartered in other states, participate in any market (residential, commercial, utility) and provide any installation service (EPC, developer, rooftop solar installer, installation subcontractor, electrical subcontractor, sales partner).
The listed kilowatts installed by each company in Illinois could come from installations in all markets (residential, commercial, utility) but only within Illinois state lines.
The companies below are a segmented portion of the overall 2021 Top Solar Contractors list, organized by kilowatts (DC) installed in 2020.
For more information on Solar Power World’s annual Top Solar Contractors list and additional sublists, visit our Top Solar Contractors landing page.