TasNetworks has published the Project Assessment Draft Report (PADR) to address system strength requirements in Tasmania from 2 December 2025. Publication of this PADR represents the second step in the Regulatory Investment Test for Transmission (RIT-T) process.
System strength is a general term encapsulating a number of specific technical issues. Maintaining adequate levels of system strength across the network is important for ensuring the power system can operate normally, especially following a fault.
The requirements for system strength can be significantly impacted by the connection of new wind and solar generators to the network. The way these technologies currently interact with and support the power system is fundamentally different to that of traditional synchronous generators, such as hydro machines.
With significant new wind and solar generation expected to connect in the foreseeable future, there is an increasing exposure to operating conditions whereby synchronous generation is not required to be online other than to provide essential security services.
As the System Strength Service Provider for Tasmania, TasNetworks is required to take action to plan, procure and make available system strength services as set out in the Australian Energy Market Operator’s (AEMO’s) annual System Strength Reports.
TasNetworks commenced the System Strength RIT-T in August 2023 with publication of a Project Specification Consultation Report (PSCR), which invited submissions from stakeholders. Two submissions were received in addition to three proposals from potential non-network service providers in response to an expression of interest published in conjunction with the PSCR.
The PADR sets out TasNetworks’ assessment of options to meet the system strength requirement in Tasmania from 2 December 2025 to 2029 and identifies a preferred solution.
In accordance with the requirements of the Rules, a summary of this PADR is made available on the AEMO website. A copy of the PADR can be obtained from either the TasNetworks website or by emailing our regulation team via regulation@tasnetworks.com.au.
TasNetworks welcomes submissions on the PADR and the preferred solution presented.
Submissions are due by COB Friday 10 January 2025. Submission should be addressed to Chris Noye, Leader Regulation and emailed to regulation@tasnetworks.com.au.