| Business | Phone |
| Linthicum Electrical Svc Co 4233 Staford Way, Ellicott City 21043 | (410) 461-9200 |
| Milton Electric Inc Ellicott City 21043 | (410) 461-8948 |
| Reedy Electrical Svc Inc 8289 Main St, Ellicott City 21043 | (410) 465-0566 |
| Triangle Electric Co Ellicott City 21043 | (410) 461-9000 |
| W C Mcneal Electric Co 3561 Saint Johns Ln, Ellicott City 21042 | (410) 480-8008 |