On 27 April 2020, the Australian Energy Market Commission (AEMC) received a rule change request from TransGrid seeking to amend the National Electricity Rules to abolish the existing 'do no harm' obligation and amend the minimum system strength requirements. This rule change is one of seven rule change requests that the AEMC commenced consultation on through the System services consultation paper, which complement and are interdependent with the Energy Security Board's NEM post-2025 reforms on essential system services.
On 29 April 2021, the AEMC published a draft determination and draft more preferable rule for consultation. The determination considers an evolved system strength framework which can provide system strength in a more proactive manner and to streamline the connection of new inverter-based resources.
The AER made a submission to the AEMC’s draft rule determination on 17 June 2021.