| Business Name | Address | |
| Trenkamp Electric Inc | 4866 435th Ave Preston, IA 52069 |
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| Burken Electric | 123 W Main St Springbrook, IA 52075 |
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| Thola Electric Inc | 1860 330th Ave Charlotte, IA 52731 |
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| Charlotte Electrical Svc | 3157 Highway 136 Charlotte, IA 52731 |
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| K & M Marshall Electric | 302 Chestnut St Bellevue, IA 52031 |
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