Take a look at our High bill checklist to learn more about what may cause a high bill.
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These are some common reasons for high bills:

Often a change in season will drive your usage up or down – have you started switching on the heater or air conditioning? Comparing bills from the same time period is a great way to map your usage and cost trends over seasons. If you were with us then, you’ll find your bill charges listed for the same time last year in your Payment history. You can also see a breakdown of your usage in the app or My Account.

Has something changed for you recently? Bill increases often come with lifestyle changes like moving to a bigger house, installing a pool, or just from using old appliances that are less energy efficient.

For gas and basic meter customers, it's a good idea to check if the high bill you've received is an Estimated bill – you can tell if your bill is based on an estimated or actual reading by looking in the 'Total charges' section. You’ll see either an (A) or (E) after the meter reading numbers, A = actual and E = estimated.

If you've received a bill that's estimated rather than actual – it's usually because we had trouble accessing your meter. You can share your actual energy usage with us by submitting a meter read, so you're only billed for what you've used.

Interested in knowing what could make a difference to your costs? Check out how energy usage savings can be made – tips broken down by state. If you're having trouble paying your bill, take a look at our Financial assistance options.