| Business | Phone |
| Used Electrical Stuff 1936 11th St, Rockford 61104 | (815) 968-2560 |
| Springfield Electric Supply Co 737 N Madison St, Rockford 61107 | (815) 968-5781 |
| Crescent Electric Supply Co 5245 28th Ave, Rockford 61109 | (815) 229-0252 |
| Englewood Electrical Supply 2869 Eastrock Dr, Rockford 61109 | (815) 226-8750 |
| General Electric Supply 3415 Precision Dr, Rockford 61109 | (815) 874-1821 |