| Business | Phone |
| Buhl Electric Co 2405 James Madison Hwy, Haymarket 20169 | (703) 753-6451 |
| Electrical Concepts Inc Haymarket 20169 | (703) 753-4747 |
| Gdc Electric 4308 High Ridge Rd, Haymarket 20169 | (703) 754-8389 |
| Mills Electric 13260 Stonewall Farm Dr, Haymarket 20169 | (571) 261-3966 |
| Tapco Enterprises Inc Haymarket 20169 | (571) 261-2300 |