| Business | Phone |
| Potter Electric 13868 Parks Steed Dr, Earth City 63045 | (314) 344-3561 |
| Mid-Rivers Electric Co 3595 Rider Trl S, Earth City 63045 | (314) 291-8600 |
| C-Mark Inc 13737 Shoreline Ct E, Earth City 63045 | (314) 739-5778 |
| Conti Electric Inc 13633 Lakefront Dr, Earth City 63045 | (314) 298-0868 |