BillDecoder Index

What do Australians actually pay for electricity?

Not what retailers say they charge. Not modelled estimates. What people are really paying, from real bills.

The BillDecoder Index is built from electricity bills uploaded by users who opt in to share their anonymised data. Every bill adds a data point. Over time, the Index builds the only independent, bill-verified picture of Australian electricity costs.

Building now

Be the first to contribute.

The Index will publish median costs, usage profiles, and standing-vs-market gaps once enough contributions exist for a state and distribution zone to appear without identifying any individual household.

Upload your bill and contribute →

What does the BillDecoder Index track?

The Index tracks real annual electricity costs by state and distribution zone, drawn from bills users have chosen to share. Unlike retailer-submitted data or government estimates, the Index reflects what households actually pay — after all charges, all discounts, and all retailer-specific fees are applied.

As the dataset grows, the Index will show:

  • Median annual costs by state
  • Average daily usage by household type
  • The gap between standing offer and market offer costs in each zone
  • Feed-in tariff distributions for solar households

How is the data collected?

When users upload a bill, they're asked whether they'd like to contribute their anonymised bill data to the Index. Contributing is optional. If they choose to contribute, the bill extraction data — usage, rates, annual cost, state, distribution zone — is added to the dataset. No names, no addresses, no account numbers. The contribution is de-identified before it's stored.

Read more about data handling on our privacy page.

Index questions

How is the Index different from retailer data?
Retailer-published rates and government estimates describe what plans cost on paper. The Index reflects what households actually pay after all charges, all discounts, and all retailer-specific fees are applied — drawn from real bills.
Can my bill be identified from the Index?
No. Bill data is de-identified before it's stored — no name, no address, no account number, no NMI. What's kept is the structural data: state, distribution zone, tariff type, rates, daily usage, and annual cost.
How do I contribute?
When you upload your bill, you're asked whether you'd like to contribute your anonymised bill data to the Index. Contributing is optional. You can use BillDecoder fully without opting in.
When will the Index show data?
Once enough contributions exist for a state and distribution zone to publish without identifying any individual household. Until then, this page is a holding page — opting in helps the dataset grow.

Upload your bill and help build the Index.

Free verdict in under 60 seconds. Opt in is one tick. De-identified before it's stored.

Upload your bill →

Independent by business model — customers pay, retailers don't.

Last updated: 24 April 2026