The Electric Reliability Council of Texas (ERCOT) does it for you. When you sign up for a plan with a new provider, ERCOT will send you a mailer confirming the switch. You have three days upon receiving the mailer to change your mind. If you don't, you'll have a new provider within seven days, and ERCOT will notify your old provider. Just remember, if you abandon a contract before it's complete, you will be on the hook for any fees or penalties detailed in its Terms of Service.
Whether you choose Just Energy or another retail electric provider for your energy supply, you'll want to know when you should call the company directly and when you should contact your local transmission and distribution service provider (TDSP). Your TDSP is the authority on all of the poles and wires that deliver electricity into your home, so if you experience a power outage or downed power line, call the utility rather than a Just Energy phone number. However, if you have a question about a specific monthly bill or Just Energy rates in general, feel free to call the Just Energy phone number on your bill.