Usage calculations

Learn more about the usage calculations in My Account and the AGL app.

From projected bills to 'usage so far' and 'cost-to-date', here's a breakdown of your usage calculations in My Account and the AGL app.

Projected bill calculation

Your bill projection is an estimated total of what your bill will be at the end of your billing cycle, either for the month or for the quarter.

The bill projection estimate will be based on your energy usage for the same period last year. If you have recently joined AGL the bill projection will only be available if you have a digital meter. The bill projection will be based on your most recent bill or the average of similar customers or households in your state.

This projection takes into account usage charges, supply charges and one-off credits. It may also include solar, demand and green charges if applicable. All charges displayed include GST. The projection excludes any pay-on-time discounts, merchant fees and miscellaneous adjustments.

Self-service meter reads and projected bills

If you have a basic meter and have joined AGL in the last six months, bill projection will only be available if you submit a meter read. Remember, your bill projection is an estimate only and your actual bill may be different. To calculate a projected bill:

  1. We estimate your average daily usage based on the meter reading data available, including your reading
  2. We take into account temperature, seasonality, average usage of similar customers in your area
  3. We then update this by the total number of days in the billing period

If you provide your own read within two days of your scheduled bill date, the bill will be sent based on your reading.

Bill projection and 'since your last bill, you’ve used' does not include any credit we may apply if your meter read is lower than expected. That credit will be applied in your Account Balance and will be applied to your next bill unless otherwise refunded.

Download or view the projected bill details in My Account or the AGL app.

For more information on GST, refer to Fees and charges on your energy bill.

'Usage so far' and 'cost so far' calculations

'Since your last bill, you’ve used' tells you the cost of your energy consumption up to this point in your billing period. It includes supply charges, usage charges and one-off credits. It may also include solar, demand and green charges if applicable.

All charges displayed include GST. Pay-on-time discounts, merchant fees and miscellaneous adjustments are excluded.

For smart meters:

  • The usage so far is the amount of energy you've used so far in this billing cycle.
  • The cost-to-date is the cost for your usage so far including supply charges, usage charges, any applicable solar, demand or green charges, and one-off credits, along with GST.

For basic meters:

  • The usage so far is an estimated figure based on your usage for the same period last year, your most recent bill, or if you're new to AGL, with this meter it will be based on other customers or households in your state.
  • The cost-to-date will be the costs associated with this estimated usage including supply charges, usage charges, guaranteed discounts and concessions, along with GST.

Regardless of your meter type, 'usage so far' is calculated by summing the daily usage costs (kWh* tariffs) and therefore doesn't take into account bill discounts. Usage discounts are included however discounts like '20% off your total bill' aren't.

'Cost so far' takes into account all of these discounts, except conditional discounts like 'Pay on time'.


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