Every month, we produce your bill based on the meter reading you’ve given us. If we don’t receive your reading, we predict your energy use for the year, based on our estimations. We then break this estimate down into a single month’s use for your bill.

How do you calculate the estimates in my bill? 

Every time we receive a meter reading from you (or your smart meter, on your behalf), our systems generate a figure which we call ‘estimated annual consumption’. We use this to generate your bill when we don’t have a recent meter reading.

An estimated annual consumption figure is a prediction of how much energy you’ll use over the next year. It’s calculated using what we know about your energy use so far, so it gets updated each time you send us a new meter reading. It also uses information such as the size of your house and how many people live in it, plus what season it is and what the weather’s been like.

Our estimates may not match the amount of energy you end up using over the year. But when we have to make an estimate to produce a bill, it means we’re using the most accurate and up-to-date information we have for you. If you think our estimate might not reflect your actual energy use, sending us a new meter reading will help ensure the next one is accurate 

I’ve sent you a meter reading - why does my bill say ‘estimated’?

If you’ve sent us a reading, it might have arrived too early or too late. If it was early, we’ll still use it to help to make the estimate in your bill more accurate. If it was too late, we’ll use it in your next monthly bill.  

How will I know the right time to send you a meter reading?

We’ll send you an email each month to let you know it’s time for your monthly meter reading. The quickest way to do this is in the Shell Energy mobile app, My Account or calling our automated phone line on 0330 094 5800.