| Business | Phone |
| Great Lakes Power Inc 181 Bay St #4400, Toronto M5J 2T3 | (416) 363-9491 |
| Hydro One Inc 483 Bay St, Toronto M5G 2C9 | (416) 345-5000 |
| Ontario Power Generation Inc 700 University Ave, Toronto M5G 1Z5 | (416) 592-2555 |
| Direct Energy 2225 Sheppard Avenue East, Toronto M2J 5C2 | (800) 348-2999 |
| A Fast Electric Help. Electrician Toronto 405 Clinton St., Toronto M6G 2Z1 | (289) 217-9643 |
| OM Depot Electrical Service 50 Cordova Avenue, Toronto M9A 4X6 | (416) 236-0129 |