Your monthly Direct Debit amount is based on how much energy we think you'll use over the year. This is known as a personal projection.
You tend to build up a credit balance in the summer when you're using less energy, which goes towards your costs in winter when you're using more.
If your payments are too low for the amount of energy you're using, you'll build up a debit balance on your account.
We bill you monthly so it's important to submit monthly meter readings to make sure your bills are as accurate as possible. Click here to submit your latest meter readings.

Why not upgrade to smart meters? 

Smart meters send us your meter readings every month without you having to do anything. To see if you're eligible for smart meters and to book an appointment, click here.