On 19 November 2020 the AEMC published a draft determination and rule to address the risks to system security and market efficiency from semi-scheduled generators curtailing generation in response to market prices without first informing AEMO and waiting for an updated dispatch instruction.
The AER provided its submission on 18 December 2020.
AER - Submission to AEMC on Semi-scheduled generator dispatch obligations - draft determination
Background
On 24 September 2020, the AER submitted a rule change request to amend the National Electricity Rules to prevent semi-scheduled generators from adjusting their output without first informing AEMO and waiting to receive a revised dispatch target.