Your landlord may give you the name of an energy supplier or tell you to choose your own.
The meter/s tells you how much energy (electricity/gas) you have used. You might be asked to provide a reading to your supplier.
Your landlord may have provided a meter which uses a card/tokens to make payments.
When you view the house, make sure you are clear where meters are located.
REMEMBER TO BUDGET FOR PAYING YOUR ENERGY BILLS.