You may pay your bill by :
It may be that you pay by prepayment and so you pay for the energy you are going to use rather than for the energy you have used as is the case with the other payment methods.
Either way it is important to keep track of any documents and bills your supplier provides you with.
Let’s take a look at the important bits of your bill.
Next time you receive your bill, take a good look at it before you file it away.