| Company | City | Service Type | Products |
| A1 Energy | Swansea | Residential, Commercial, | Solar Electric (pv), |
| Advanced Energy Solutions | Pomona | Residential, | Solar Electric (pv), |
| Advanced Energy Solutions – Carbondale | Carbondale | Residential, | Solar Electric (pv), |
| Advanced Energy Solutions Group, Inc. | Pomona | Residential, | Solar Electric (pv), |
| Ailey Solar | Chicago | Residential, | Solar Electric (pv), |
| American Renewable Energy | Evanston | Residential, | Solar Electric (pv), |
| Angel Wind Energy Inc. | Onarga | Residential, | Solar Electric (pv), |
| CIC Energy Consulting, LLC | Chicago | Residential, ,Commercial, ,Municipal, | Solar Electric (pv), |
| Day And Night Solar | Collinsville | Residential, Commercial, | Solar Electric (pv), |
| Earth Wind And Solar Energy, LLC | Chicago | Residential, | Solar Electric (pv), |
| Ebener Construction | Lasalle | Residential, | Solar Electric (pv), |
| Eco Solar Solutions | Chicago | Residential, Commercial, | Solar Electric (pv), |
| Energy Independence Corporation | Galena | Residential, | Solar Electric (pv), |
| Good Electric, Inc | Chicago | Residential, | Solar Electric (pv), |
| Green Guy Solutions LLC | Matteson | Residential, | Solar Electric (pv), |
| Green Market Solutions | Chicago | Commercial, | Solar Electric (pv), |
| Green Power Solutions | Palos Heights | Residential, ,Municipal, | Solar Electric (pv), Wind Power, |
| Greenwerks- Chicagos Green Contractor | Chicago | Residential, | Solar Electric (pv), |
| Habi-Tek | Geneva | Residential, | Solar Electric (pv), |
| Hardt Electric Inc. | Chicago | Residential, | Solar Electric (pv), |
| Hummingbird Electric | Palatine | Residential, | Solar Electric (pv), |
| Independence Renewable Energy, LLC | Somonauk | Residential, | Solar Electric (pv), |
| InSource Power | Winnetka | Commercial, | Solar Electric (pv), |
| Interstate Sun | Naperville | Residential, ,Commercial, ,Utilities, ,Municipal, | Solar Electric (pv), Solar Hot Water (thermal), Solar Pool Heating, Wind Power, |
| IRVPower | Buda | Residential, ,Commercial, ,Utilities, ,Municipal, | Solar Electric (pv), Solar Hot Water (thermal), |
| Meyer Electrical Construction | Chicago | Residential, | Solar Electric (pv), |
| Mid America Advanced Power Solutions | Swansea | Residential, | Solar Electric (pv), |
| Midwest Green Energy | Peoria | Residential, | Solar Electric (pv), |
| Millennium Solar Electric | Park Forrest | Residential, | Solar Electric (pv), |
| NorthShore Solar | Evanston | Residential, Commercial, Municipal, | Solar Electric (pv), Solar Hot Water (thermal), Solar Pool Heating, |
| Poltech Electric | Hoffman Estates | Residential, | Solar Electric (pv), |
| Pvpower | Chicago | Residential, | Solar Electric (pv), |
| Robert Bair Services Plumbing Heating & Air | Downers Grove | Residential, | Solar Electric (pv), |
| Shamrock Green Electric | Elk Grove Village | Residential, | Solar Electric (pv), |
| SoCore Energy | Chicago | Residential, | Solar Electric (pv), |
| SoCore Energy – Chicago | Chicago | Residential, ,Commercial, | Solar Electric (pv), |
| Solar Energy of Illinois | Chicago | Residential, | Solar Electric (pv), |
| Solar Service Inc. | Niles | Residential, | Solar Electric (pv), |
| SolarWerks | Chicago | Residential, ,Commercial, | Solar Electric (pv), |
| Sun Heat Solar | Addison | Residential, | Solar Electric (pv), |
| Tick Tock Energy Inc. | Effingham | Residential, | Solar Electric (pv), |
| Windy City Power, LLC | palatine | Residential, | Solar Electric (pv), |
| Woodstar Energy Llc | Des Plaines | Residential, | Solar Electric (pv), |
