| Business | Phone |
| American Electrical Svc Co Inc 4937 Green Valley Rd, Monrovia 21770 | (301) 942-4498 |
| Electrical Services Unltd Inc 4937 Green Valley Rd, Monrovia 21770 | (301) 831-3121 |
| F J Electric Co 3542 Runkles Dr, Monrovia 21770 | (301) 831-9297 |
| Falcon Electrical Inc Monrovia 21770 | (301) 865-6133 |
| Las Electric 11440 Archer Cir, Monrovia 21770 | (301) 831-9122 |
| Pavay Electrical Svc 3509 Marigold Dr, Monrovia 21770 | (301) 798-0033 |
| Power Concepts Inc 11306 Scenic View Ct, Monrovia 21770 | (301) 865-6095 |
| Power Plus Electrical Svc 3932 Chaucer Ct, Monrovia 21770 | (301) 831-6777 |
| Ward Electric 4715 Green Valley Rd, Monrovia 21770 | (301) 590-3012 |