There are two essential things that you need to be aware of with regards to your energy contract:
CONTRACT END DATES
It is crucial to know when your contract ends as you do not want to be rolled over on to a new contract. Roll-over is when your energy supplier automatically rolls you over on to a new 12 month contract which invariably has more expensive rates than those available on the market. To avoid this, you must know your contract end date and your termination window.
This is the period within which you are allowed to tell your energy supplier that you don’t want to be rolled over on to a new contract. You need to know this window because if you contact the supplier too early or too late, you can still be rolled over on to a premium 12-month contract.
“Customers who wish to avoid being automatically rolled over for a further fixed term period can now prevent this from happening by writing to their supplier at any point from when they agreed a fixed term contract until the end of the notification window. However, if a customer wishes to terminate or cancel the contract they must do so in accordance with the terms of the contract.” This quote is taken from the following OFGEM publication: