| Business | Phone |
| Alm Electric Inc 567 E Ih 10, Seguin 78155 | (830) 379-1776 |
| Anderson Electric Inc 851 E Ih 10, Seguin 78155 | (830) 303-6330 |
| Bloch Electrical Svc Seguin 78155 | (830) 401-4146 |
| Firm 233 River Rd, Seguin 78155 | (830) 372-1388 |
| Guadalupe Electrical Co Op 1400 W Kingsbury St, Seguin 78155 | (830) 386-0101 |
| Industrial Electric Svc 405 E Ih 10, Seguin 78155 | (830) 372-5215 |
| Three Phase Electric 2407 Eden Rd, Seguin 78155 | (830) 379-6569 |
| Torres Electric 2201 Huber Rd, Seguin 78155 | (830) 303-3801 |
| Walnut Springs Electric 1011 S State Highway 46, Seguin 78155 | (830) 379-7720 |
| Rtx Electric 131 El Dorado Ln, Seguin 78155 | (830) 303-4809 |
| S & J Electric 2126 Woodland Dr, Seguin 78155 | (972) 525-3463 |
| Seguin Electric Co 1406 N Austin St, Seguin 78155 | (830) 379-5844 |
| Lone Star Electric 15148 Fm 725, Seguin 78155 | (830) 372-2477 |