| Business | Phone |
| A & M Electric Llc 4119 N Point Rd, Dundalk 21222 | (410) 477-5012 |
| Capitol Prison Systems Inc 8100 Stansbury Rd # A1, Dundalk 21222 | (410) 285-8988 |
| Klima Electric 3 Pinewood Rd, Dundalk 21222 | (410) 282-7100 |
| L & L Electrical Contractors 7108 Maple Dr, Dundalk 21222 | (410) 239-0992 |