It's possible you received a higher bill due to an estimated bill. There are a few reasons we might need to estimate your energy usage.
If you have a basic meter (all gas meters are basic), it may be that your distributor:
had trouble accessing your meter, perhaps because it’s indoors, behind a locked gate or there may be a dog in your yard
reads your meter only every two or three months, but you have monthly billing.
If you have a digital meter, connection dropouts can sometimes happen. In this case, we receive an estimate based on your past use for the time that data is not available.
Visit Estimated bills for information on how to:
Submit your own meter read
If you have a basic meter, you can avoid an estimated bill by providing your own meter read two days before your next bill. You can also submit your own reading online to correct an estimated bill. To see what type of meter you have, visit Read your meter.