Transmission annual planning report guideline

Date initiated: 
28 March 2018
Effective date: 
30 September 2018
AER General inquiries


The Australian Energy Regulator (AER) is developing a Transmission Annual Planning Report (TAPR) Guideline to support the consistent provision of information by transmission businesses across the National Electricity Market. This information will complement the TAPR documents published on 30 June each year.

The development of the TAPR Guideline follows from the transmission connection and planning arrangements rule determination, made in May 2017. Following this rule determination, we will publish the TAPR Guideline under clause 5.14B.1 of the National Electricity Rules.

By supporting consistent information provision, the TAPR Guideline will provide generators and large transmission customers useable and consistent information they need to make informed connection decisions. It will also provide non-network service providers information on how they may offer non-network solutions to identified transmission needs. More broadly, it will provide interested parties, including electricity consumers and their representatives, information that allows them to better understand network planning, and engage with how investment decisions are made. We will also use this information to inform our revenue reset assessments.

This complements our other work in this area, which has included:

  • Collaborating with transmission and distribution businesses to drive improvements in their TAPRs and Distribution Annual Planning Reports (DAPRs), including by forming improvement action plans.
  • Publishing the System Limitations Template (also known as the DAPR template). Similar to the TAPR guideline's objective for transmission businesses, the System Limitations Template improves the consistency and useability of distribution businesses' DAPRs.
  • Initiating a replacement expenditure rule change (made in 2017) that requires network businesses to provide information on all planned asset retirements (and de-ratings that lead to a network need) in their TAPRs and DAPRs. This has lead to ongoing work with network businesses and Energy Networks Australia's asset management committee to foster a consistent approach on conducting risk assessments to demonstrate efficient asset retirements.

In May 2018, we received submissions on a consultation paper that proposed what information transmission businesses should publish to assist interested parties to engage effectively in network planning decisions. We intend to publish a draft TAPR guideline in June 2018.