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.
Notification of closed T-3 Reliability gap
AEMO - Notice under National Electricity Rule 4A.C.5 that the reliability gap is not forecast to occur in South Australia - 1 October 2025
Content type
Document
Notice of final instrument
On 28 September 2023 AEMO requested the AER make a T-3 reliability instrument along with publishing the September update to the 2023 Electricity Statement of Opportunities.
AEMO - Reliability Instrument Request SA T-3 - September 2023
Content type
Document
AEMO - September Update to the 2023 Electricity Statement of Opportunities - September 2023
Content type
Document
AEMO - 2023 Forecasting Best Practice Compliance Report - August 2023
Content type
Document
AEMO - Demand Side Participation Forecast Methodology - August 2020
Content type
Document
AEMO - ESOO and Reliability Forecast Methodology Document - August 2023
Content type
Document
AEMO - Forecasting Approach Electricity Demand Forecasting Methodology - August 2023
Content type
Document
AEMO - 2023 Inputs Assumptions and Scenarios Report - July 2023
Content type
Document
AEMO - 2023 IASR Assumptions Workbook - August 2023
Content type
Document
Submissions
-
Submissions on the reliability instrument request closed on 20 October 2023. No submissions were received.
Decision
On 28 November 2023, the AER released its decision on the South Australia T-3 Reliability instrument request for 2026–27.
AER - Reliability instrument - South Australia 2026–27 T-3 - 28 November 2023
Content type
Document