The Retailer Reliability Obligation (RRO) is designed to support reliability in the National Electricity Market (NEM). In particular it encourages retailers, and some large energy users, to establish contracts for their share of demand for a prescribed period. If the Australian Energy Market Operator (AEMO) identifies a reliability gap in a region of the NEM as part of its Electricity Statement of Opportunities (ESOO) it must provide the AER with a reliability instrument request.
T-3 Reliability Instrument
On 28 November 2023 the AER made a T-3 Reliability Instrument for South Australia from 1 December 2026 to 28 February 2027 inclusive.
Notification of closed T-3 Reliability gap
On 1 October 2025, AEMO notified the AER that the South Australia 1 December 2026 – 28 February 2027 reliability gap is no longer forecast. As a result, the reliability gap is now closed.