| Business | Phone |
| All Bright Electric 5860 Caulfield Dr, Clayton 94517 | (925) 673-5900 |
| Butler Electric 3155 Morgan Territory Rd, Clayton 94517 | (925) 672-3434 |
| Jakes Electric Clayton 94517 | (925) 672-8879 |
| Kobierski Electric Clayton 94517 | (925) 672-6492 |
| Parker Electric Co Clayton 94517 | (925) 672-8330 |