| Business | Phone |
| Barrett Electric Co 7025 Silver Run Rd, La Plata 20646 | (301) 870-2003 |
| C E Harris Electric La Plata 20646 | (301) 932-7152 |
| Commercial Power Inc 6605 Ellenwood Dr, La Plata 20646 | (301) 870-3889 |
| Edward J Holt Jr 7815 Rollins Ct, La Plata 20646 | (301) 934-4895 |
| J & J Electric La Plata 20646 | (301) 932-6355 |
| L & M Assoc Inc 1205 E Patuxent Dr, La Plata 20646 | (301) 848-1498 |