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
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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.
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Submissions
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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
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Document