| Business | Phone |
| Allegri Electric Sonora 95370 | (209) 533-9108 |
| Baldwin Electric Co 20690 Resort Rd, Sonora 95370 | (209) 532-6385 |
| Barry Electric 22240 Fortuna Mine Rd, Sonora 95370 | (209) 532-7710 |
| Bendix Electric 19203 Soulsbyville Rd, Sonora 95370 | (209) 928-4145 |
| Clink Electric 19238 Cordelia Ave, Sonora 95370 | (209) 532-7743 |
| Gertz Electric Inc 15818 Curtis Cir, Sonora 95370 | (209) 694-8044 |
| Incotec 16572 S Creekside Dr, Sonora 95370 | (209) 532-5138 |
| J L Case & Sons 20644 Green Acres Dr, Sonora 95370 | (209) 532-7595 |
| John Diehl Electric 19696 Whitto Mine Rd, Sonora 95370 | (209) 532-5232 |
| Kim Persson Electric 21223 Ridgeview Dr, Sonora 95370 | (209) 532-6483 |
| Mantech Electric 19673 Rawhide Rd, Sonora 95370 | (209) 532-5990 |
| O'Connor Electric 21302 Phoenix Lake Rd, Sonora 95370 | (209) 533-4751 |
| P C Electric 17443 Smokey River Dr, Sonora 95370 | (209) 586-7749 |
| P H Electric Sonora 95370 | (209) 532-3943 |
| Relay Electric 14923 Potato Ranch Rd, Sonora 95370 | (209) 532-6253 |
| Tri-Technic Inc 55 W Stockton St, Sonora 95370 | (209) 694-8242 |