| Business | Phone |
| C & K Electric Co 7910 Brock Bridge Rd, Jessup 20794 | (410) 799-3025 |
| C D Williams Electric Co Jessup 20794 | (410) 792-2800 |
| Crawford Electric Inc 2979 Jessup Rd, Jessup 20794 | (301) 384-8880 |
| Electrical General Corp Elec 8265 Patuxent Range Rd, Jessup 20794 | (301) 725-5700 |
| Emax Electric Inc 8012 Max Blobs Park Rd, Jessup 20794 | (410) 799-9402 |
| Henningsen-Reed Electric Co 10555 Guilford Rd # 118, Jessup 20794 | (410) 792-2136 |
| Incon Inc 10620 Riggs Hill Rd, Jessup 20794 | (301) 498-5566 |
| Neumyer Electrical Co 8203 Lincoln Dr, Jessup 20794 | (410) 799-0027 |
| Pem Electrical 7928 Brock Bridge Rd, Jessup 20794 | (443) 755-8845 |
| R E Baker Electrical Cntrctrs 10630 Riggs Hill Rd, Jessup 20794 | (301) 776-7883 |
| Star Electric 7550 Waterloo Rd, Jessup 20794 | (443) 755-0666 |
| Tri Star 2979 Jessup Rd, Jessup 20794 | (410) 799-5791 |
| United Electric 8100 Dorsey Run Rd, Jessup 20794 | (410) 799-1464 |