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Reclassification of non-credible contingency event due to existence of widespread abnormal condition/s - SA region.
AEMO has identified that a non-credible contingency event impacting the power system is more likely to occur and is considered reasonably possible because of the existence of widespread abnormal conditions namely severe weather in the SA region.
AEMO has therefore reclassified the occurrence of a non-credible contingency event involving multiple plant due to these abnormal conditions as credible.
AEMO has taken the following action(s) to maintain power system security at 1925 hrs 09/07/2025.
Constraint set(s) invoked:
I-VS_250
Duration: 1925 hrs until further notice
Need for further measures is being monitored and further measures may be implemented in line with the Power System Security Guidelines (SO_OP_3715).
Manager NEM Real Time Operations
Cancellation of the reclassification of a Non-Credible Contingency Event: Para-Templers West and Magill-Torrens Island A 275kV lines in SA due to severe weather warning.
Cancellation of the reclassification of a non-credible contingency event as a credible contingency event due to severe weather warning.
AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any severe weather warning in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: SA
Lines: Para-Templers West and Magill-Torrens Island A 275kV lines
Cancellation time: 1710 hrs 09/07/2025
Constraint set(s) revoked: Nil
Refer AEMO Electricity Market Notice 127998
Manager NEM Real Time Operations
STPASA - Cancellation of the Forecast Lack Of Reserve Level 2 (LOR2) in the SA Region on 11/07/2025
The Forecast LOR2 condition in the SA region advised in AEMO Electricity Market Notice No. 128031 is cancelled at 0025 hrs 09/07/2025.
Manager NEM Real Time Operations
STPASA - Forecast Lack Of Reserve Level 2 (LOR2) in the SA Region on 11/07/2025
AEMO declares a Forecast LOR2 condition under clause 4.8.4(b) of the National Electricity Rules for the SA region for the following period:
[1.] From 1000 hrs 11/07/2025 to 1030 hrs 11/07/2025.
The forecast capacity reserve requirement is 833 MW.
The minimum capacity reserve available is 819 MW.
AEMO is seeking a market response.
AEMO has not yet estimated the latest time at which it would need to intervene through an AEMO intervention event.
Manager NEM Real Time Operations
Cancellation: Reclassification of non-credible contingency event due to existence of widespread abnormal condition/s - SA region.
AEMO considers the occurrence of a non-credible contingency event due to the widespread abnormal conditions advised in AEMO Electricity Market Notice 127999 is no longer reasonably possible and accordingly its classification has reverted to non-credible.
Cancellation time: 1905 hrs 08/07/2025
Constraint set(s) revoked: I-VS_250
Manager NEM Real Time Operations
PDPASA - Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 08/07/2025
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the NSW region for the following Period:
[1.] From 1730 hrs 08/07/2025 to 1800 hrs 08/07/2025.
The forecast capacity reserve requirement is 1400 MW.
The minimum capacity reserve available is 1392 MW.
Manager NEM Real Time Operations
STPASA - Cancellation of the Forecast Lack Of Reserve Level 2 (LOR2) in the SA Region on 09/10/2025
The Forecast LOR2 condition in the SA region advised in AEMO Electricity Market Notice No. 128005 is cancelled at 1000hrs 08/07/2025.
No LOR2 condition is currently forecast in the STPASA period.
AEMO Operations
STPASA - Update of the Forecast Lack Of Reserve Level 2 (LOR2) in the SA Region on 09/07/2025
The Forecast LOR2 condition in the SA region advised in AEMO Electricity Market Notice No. 128001 has been updated at 0900 hrs 08/07/2025 to the following:
From 2230 hrs to 2330 hrs 09/07/2025.
The forecast capacity reserve requirement is 566 MW.
The minimum capacity reserve available is 573 MW.
AEMO is seeking a market response.
AEMO has not yet estimated the latest time it would need to intervene through an AEMO intervention event.
AEMO Operations
STPASA - Cancellation of the Forecast Lack Of Reserve Level 2 (LOR2) in the SA Region on 10/07/2025
The Forecast LOR2 condition in the SA region advised in AEMO Electricity Market Notice No. 128002 is cancelled at 0900 hrs 08/07/2025.
AEMO Operations