Guidelines, schemes, models and reviews

The Rate of Return Instrument specifies how the AER will determine the allowed rate of return on capital invested in regulated electricity and gas networks.

On 12 November 2024, the AER published a final determination on the 2024 cost threshold review for regulatory investment tests and annual price reports.

We examine the relative efficiency of the distribution and transmission electricity network service providers in 2024.

The intent of the annual updates is to provide stakeholders with information on rate of return data changes since the publication of the most recent Instrument.

We examine the relative efficiency of the distribution and transmission electricity network service providers in 2023.

The AER's final guidance note on how we will address material impacts on the benchmarking results of differences in electricity DNSP's capitalisation process

The AER has been consulting on its approach to incentivising and measuring export service performance.

The Rate of Return Instrument (the Instrument) sets out the approach by which we will estimate the rate of return, and comprises the return on debt and the return on equity, as well as the value of imputation credits. We publish a new Instrument every 4 years that will bind all regulatory determinations in the subsequent 4 years.

We examine the relative efficiency of the distribution and transmission electricity network service providers in 2022.

On 19 November 2021, the AER published a final determination on the 2021 cost threshold review for the Regulatory Investment Tests

We examine the relative efficiency of the distribution and transmission electricity network service providers in 2021.