| Business | Phone |
| Vol-Tek Electric Inc 166 Kimberly Ln, Lake Forest 60045 | (847) 735-9420 |
| Romitti Electric Corp Lake Forest 60045 | (847) 831-4471 |
| R G Electric 165 E Deerpath Rd, Lake Forest 60045 | (847) 604-1828 |
| Hucker Electric Lake Forest 60045 | (847) 662-8384 |