Just Energy » Business Directory If you would like to have your Trent Lakes business or organization included in this free directory, please click here to sign up. Or log in to your existing profile. Go back to directory. Add to Address Book. Just Energy Just Energy Contact: Rob Mitchell Work Phone: 855-387-6071work Work Email: firstname.lastname@example.orgINTERNET Website: Just Energy Biography Just Energy is an energy supplier of hydro-electricity and natural gas in Ontario. Just Energy is headquartered in Mississauga, ON.