| Business | Phone |
| Glengarry Electric Rr 2 Lcd 1, Cornwall K6H 5R6 | (613) 931-3110 |
| Laframboise Mechanical-Elec 1397 Rosemount Ave, Cornwall K6J 3E5 | (613) 933-6664 |
| Laurier Electric Ltd 1140 Brookdale Ave #H, Cornwall K6J 4P4 | (613) 933-4000 |
| Lemire Electric 27 Edgevale Crt, Cornwall K6J 5P1 | (613) 938-6920 |
| Louis Cartier Electric 714 Laflin Ave, Cornwall K6J 3M5 | (613) 938-6305 |
| Mc Cartney, Everett 1410 Jane St, Cornwall K6J 1X3 | (613) 933-2886 |
| Moore Electric 114 9th St W, Cornwall K6J 3A5 | (613) 938-2429 |
| Peter Bonamassa Electric Ltd 17305c Cornwall Centre Rd, Cornwall K6K 1K5 | (613) 938-8860 |
| Pmc Contracting Svc 805 Sydney St, Cornwall K6H 3J7 | (613) 937-0494 |
| Bergeron Electric Ltd 7 Albert St, Cornwall K6H 4E7 | (613) 932-9205 |
| Seymour & Boals Ltd 17615 South Branch Rd, Cornwall K6H 5R6 | (613) 938-1770 |
| Warden Electric Rr 1 Lcd 1, Cornwall K6H 5R5 | (613) 931-1710 |
| Wollenweber Electric Rr 1 Lcd 1, Cornwall K6H 5R5 | (613) 932-6730 |
| C Ruest Electric 228 Kensington St, Cornwall K6H 3E9 | (613) 932-5953 |
| Crump Electric Contractor Ltd 615 Fraser Ave, Cornwall K6H 5R2 | (613) 938-2349 |
| Elite Electric 421 Prince Arthur St, Cornwall K6H 4P3 | (613) 932-1192 |
| Elco Electric Ltd 17409 South Branch Rd, Cornwall K6H 5R6 | (613) 933-0370 |
| G Bisson Electric Ltd 120 12th St E, Cornwall K6H 6S7 | (613) 938-1622 |