| Business | Phone |
| Avondale Electric Westminster 21157 | (410) 876-2948 |
| Barco Electric Inc 1945 Running Brook Dr, Westminster 21158 | (410) 875-9470 |
| Bec Electrical Contractors 933 Litchfield Cir, Westminster 21158 | (410) 848-1672 |
| Chet Electric 3001 Mayberry Rd, Westminster 21158 | (410) 346-7370 |
| Contemporary Electrical Svc 1150 Old Westminster Pike, Westminster 21157 | (410) 876-9179 |
| Current Choice Electric 1149 Green Meadow Ln, Westminster 21158 | (410) 346-7990 |
| Custom Instrumentation & Cntrl 2495 Karen Way, Westminster 21157 | (410) 840-3022 |
| D C & C Engineering 79 E Main St, Westminster 21157 | (410) 840-3002 |
| Dave Underwood Electric 82 Sunshine Way, Westminster 21157 | (410) 840-8798 |
| Design Consultants Inc 79 W Main St, Westminster 21157 | (410) 840-9744 |
| Diako Electric Inc 1010 Baltimore Blvd, Westminster 21157 | (410) 751-9473 |
| Electrical Apprentice Program 2542 Murkle Rd, Westminster 21158 | (410) 876-2914 |
| Five Star Electric 389 Logan Dr, Westminster 21157 | (410) 871-1139 |
| Hagemeyer 1101 Business Pkwy S # A, Westminster 21157 | (410) 876-2050 |
| Hilltop Electric Co 139 W Main St, Westminster 21157 | (410) 876-2604 |
| Hoke Electric 1775 Solomon Ln, Westminster 21157 | (410) 871-0072 |
| Kas Enterprises Inc 807 Boxcar Dr, Westminster 21157 | (410) 876-2110 |
| Long's Electrical Svc 961 Bachmans Valley Rd, Westminster 21158 | (410) 857-0105 |
| Lucas Electric Inc Westminster 21157 | (410) 848-9010 |
| Pro Elecrical Co Westminster 21157 | (410) 876-9051 |
| Remark Electric Inc 1100 South Business Parkway suite #5, Westminster 21157 | (410) 386-0707 |
| Remark Electric Inc 1100 Business Pkwy S, Westminster 21157 | (410) 386-0707 |
| Remark Electric Inc 72 E Main St, Westminster 21157 | (410) 876-7073 |
| Spence Electric 910 Lucabaugh Mill Rd, Westminster 21157 | (410) 840-2149 |
| Tilden Electrical Construction Po Box 187, Westminster 21158 | (410) 848-6495 |
| Tim Kyle Co 151 W Main St, Westminster 21157 | (410) 848-6324 |
| Tristate Electrical 1101 Business Pkwy S, Westminster 21157 | (410) 848-3050 |
| W C Mc Neal Electric Co 60 E Nicodemus Rd, Westminster 21157 | (410) 871-9392 |
| Warners Electric Svc 933 Western Chapel Rd, Westminster 21157 | (410) 848-8841 |