Why do I have two lines of prices on my bill?

If you have two lines of prices on your bill for the period covering July, it is because prices change on 1 July each year.

Where the new prices are applied part way through your billing cycle, you’ll see one line showing the old rates for the period prior to 30 June, and another line for the new rates from 1 July onwards. This split is necessary to accurately account for the price changes during your billing cycle.


In some instances, pro rata may be used to calculate your bill. This could be due to your meter requiring a manual reading. You’ll be able to tell as the front page of your bill will have a message advising this.


In the example below, we can see the customer was charged the old rate from 31 May 2023 to 30 June 2023, and the new prices from 1 July 2023.

Pro-Rata Bill

We’re required to pro rata bills for price changes under the National Energy Customer Framework.