| Business Name | Address | |
| Sukow Electric | N6349 County Road P Helenville, WI 53137 |
 |
| Zap Electric | W3941 County Road Y Jefferson, WI 53549 |
|
| Carroll Electric | 130 E Racine St Jefferson, WI 53549 |
|
| Jefferson Current Electric Inc | N3085 County Road K Jefferson, WI 53549 |
|
| Superior Power | N6186 Jefferson Rd Johnson Creek, WI 53038 |
|