| Business | Phone |
| Control Corp 6122 S 108th St, Hales Corners 53130 | (414) 529-5511 |
| Cream City Electric Inc 10701 W Edgerton Ave, Hales Corners 53130 | (414) 425-8041 |
| Krause Electric Inc Po Box 387, Hales Corners 53130 | (414) 529-4300 |
| West Allis Electric 5134 S 108th St, Hales Corners 53130 | (414) 425-6565 |
| Pace Electric Inc 12015 W Janesville Rd, Hales Corners 53130 | (414) 425-3305 |