How we help Saving you money How do I switch? To switch energy supplier you’ll need: Your postcode The name of current supplier The name of the energy offer you're currently on and how much you spend on gas and electricity. You can find this information on a recent bill. An up-to-date meter reading Your bank details if you will be paying by direct debit Your Meter Point Access Number (or ‘MPAN’) and Meter Point Reference Number (or ‘MPRN’). You can find these on a recent bill. Check your best deal here