| Business | Phone |
| Nichols Electric Co 14241 Falling Waters Rd, Williamsport 21795 | (301) 223-6642 |
| Parrish Electrical Svc 11022 Hickory School Rd, Williamsport 21795 | (301) 582-0966 |
| Antietam Electrical Contractor 16290 Spielman Rd, Williamsport 21795 | (301) 223-1152 |
| Tri State Controls 10720 Appletree Ln, Williamsport 21795 | (301) 223-7000 |
| Kube Electric Co 11415 Drop Rd, Williamsport 21795 | (301) 223-6437 |