| Business | Phone |
| A A Electric Co Po Box 445, Damascus 20872 | (301) 924-4145 |
| Advanced Electrical Systems 28030 Ridge Rd, Damascus 20872 | (301) 391-6771 |
| Amber Electric 10912 Bellehaven Blvd, Damascus 20872 | (240) 876-6540 |
| Bill's Electric Co Damascus 20872 | (301) 253-5500 |
| Sandifer Electrical 9721 Beall Ave, Damascus 20872 | (301) 253-4780 |
| Crescent Electric Inc Po Box 9, Damascus 20872 | (301) 816-2000 |
| Dp Electric Inc 11409 Bethesda Church Rd, Damascus 20872 | (301) 253-3622 |
| Jaffe Electric Inc 25648 Coltrane Dr, Damascus 20872 | (301) 253-3778 |