| Business Name | Address | |
| Gruenwald Electric | 101 5th Ave NE Clark, SD 57225 |
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| Efraimson Electric | RR 1 Box 133a Bryant, SD 57221 |
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| Dockter's Electric | 2715 Sioux Conifer Rd Watertown, SD 57201 |
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| Marquardt Electric Inc | 1018 3rd Ave NW Watertown, SD 57201 |
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| Muth Electric Inc | 415 3rd Ave NW Watertown, SD 57201 |
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