| Business Name | Address | |
| Frontier Electric & Plumbing | 675 Solidarity Valley Dr St Clair, MO 63077 |
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| Paul's Plumbing & Electrical | Union, MO 63084 |
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| Bolzenius Electric Mechanical | 16 Williams Dr Union, MO 63084 |
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| Rob-N-Son Electric | 32 Highline Industrial Dr Union, MO 63084 |
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| Ken Huff Electrical Co | 246 Hummingbird Ln Lonedell, MO 63060 |
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