| Business | Phone |
| A Plus Electric 9931 N Warren Oval, Niles 60714 | (847) 581-1568 |
| Aec Electric Corp 5601 W Howard St, Niles 60714 | (847) 588-3830 |
| Astro Electric 8000 W Oakton St, Niles 60714 | (847) 692-5300 |
| Blazer Electric Co 6936 W Birchwood Ave, Niles 60714 | (847) 277-1135 |
| Block Electric Co Inc 7107 N Milwaukee Ave, Niles 60714 | (847) 647-4030 |
| Crown Engineering Co 5675 W Howard St, Niles 60714 | (847) 647-7400 |