| Business | Phone |
| City Of Seguin Electric Dept 205 N River St, Seguin 78155 | (830) 401-2404 |
| Guadalupe Valley Elec Co-Op 1400 W Kingsbury St, Seguin 78155 | (830) 379-2114 |
| Rio Nogales Power 711 Rio Nogales Dr, Seguin 78155 | (830) 303-0425 |
| Lower Colorado River Authority Rr 1, Seguin 78155 | (830) 379-1650 |