| Business | Phone |
| Dennco Electric Svc Inc 319 Harper Ln, Danville 94526 | (925) 820-3710 |
| Edc Electric Inc Danville 94526 | (925) 838-7338 |
| Ferrera's Electric Danville 94526 | (925) 831-3492 |
| Gibbons Electric 189 Clipper Hill Rd, Danville 94506 | (925) 833-8488 |
| Industrial Power & Electric Danville 94526 | (925) 838-4457 |
| Mace Electric Danville 94526 | (925) 837-7650 |
| Mic Electric Danville 94526 | (925) 831-9136 |
| Pro Electric 802 Diablo Rd, Danville 94526 | (925) 706-8284 |
| R C Hansen Electrical Co Danville 94526 | (510) 523-0894 |
| R C Hansen Electrical Co Danville 94526 | (925) 838-0894 |