On 22 April 2021, the Australian Energy Market Commission (AEMC) released the draft rule determination and draft rule titled National Electricity Amendment (fast frequency response market ancillary service) Rule 2021.
If made, the rue would amend the National Electricity Rules to introduce new market ancillary service arrangements for the procurement of fast frequency response to help efficiently manage system frequency following contingency events during low inertia operation. The rule would create new very fast raise and lower ancillary services that would operate in the same way as existing fast raise and lower services.