If you’re on a fixed rate tariff with your current supplier, check to see if there’s an exit fee for leaving the contract early. If there is, you’ll need to factor this cost into your price comparison as it could swallow up some of the potential savings.
Under Ofgem’s standards of conduct, energy firms must give you a minimum of 42 days’ notice of your tariff ending. You can switch for free, with no exit fee payable, once you’ve reached the final 49 days of your contract.