| Business | Phone |
| Rdi Electric 1502 Durham Rd, Madison 6443 | (203) 421-4114 |
| Nichols Electric Co 33 Nichols Hill Dr, Madison 6443 | (203) 421-4258 |
| Fma Electric 15 Sperry Rd, Madison 6443 | (203) 421-8376 |
| Morton Electric 85 Green Hill Rd, Madison 6443 | (203) 245-3644 |
| Mr Electric Madison 6443 | (203) 245-3336 |
| Lra Electric Inc 312 Horse Pond Rd, Madison 6443 | (203) 245-1679 |
| Lemley Electric 90 Wall St, Madison 6443 | (203) 245-9345 |
| Jjl Electric Madison 6443 | (203) 245-6043 |