If I switch supplier, how long do I have to stay with my new supplier for?

Read your energy supplier's terms and conditions, as some gas and electricity suppliers may provide a favourable rate for new customers for a certain period.

Many tariffs now impose an end date and will charge cancellation fees for leaving the plan before that date. Before switching, you should always check your current tariff's terms and conditions to see if you will have to pay a fee. Generally, if you are on a supplier's standard plan then there will be no exit penalties, but it is always best to check. Which? Switch will tell you on the 'compare to current' page whether your new tariff has any cancellation charges.

If you're on a fixed, capped or discounted energy plan, check your existing terms and conditions for more information. If you don't have these to hand, your current energy supplier will be able to advise you. 

Which? Switch is updated whenever energy prices change, so you can come back any time to see if you could make savings with another energy supplier. 

It's worth coming back to Which? Switch when your energy company notifies you of price increases, to ensure you're still getting the best deal.