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127751RECLASSIFY CONTINGENCY23/06/2025 09:29:34 PM
Reclassification of non-credible contingency event due to existence of widespread abnormal conditions - SA region.
AEMO ELECTRICITY MARKET NOTICE.
AEMO has identified that a non-credible contingency event impacting the power system is more likely to occur and is considered reasonably possible in the Mount Lofty Ranges, Upper South East, Lower South East, Adelaide Metro, Mount Lofty Ranges, Mid North and Murraylands districts 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 2130 hrs 23/06/2025
Constraint set(s) invoked: I-VS_250
Duration: 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
AEMO has identified that a non-credible contingency event impacting the power system is more likely to occur and is considered reasonably possible in the Mount Lofty Ranges, Upper South East, Lower South East, Adelaide Metro, Mount Lofty Ranges, Mid North and Murraylands districts 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 2130 hrs 23/06/2025
Constraint set(s) invoked: I-VS_250
Duration: 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
127750RECLASSIFY CONTINGENCY23/06/2025 07:49:15 PM
Reclassification of a Non-Credible Contingency Event: Eildon PS - Mt Beauty No.1 220 kV line and Eildon PS - Mt Beauty No.2 220 kV line in VIC1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: VIC1
Lines: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV
Duration: 23/06/2025 19:49 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: VIC1
Lines: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV
Duration: 23/06/2025 19:49 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
127749RECLASSIFY CONTINGENCY23/06/2025 06:16:56 PM
Reclassification of a Non-Credible Contingency Event: Para-Templers West and Magill-Torrens Island A 275kV lines in SA due to severe weather warning.
AEMO ELECTRICITY MARKET NOTICE.
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 to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: SA
Lines: Para-Templers West and Magill-Torrens Island A 275kV lines
Duration: 1810 hrs 23/06/2025 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
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 to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: SA
Lines: Para-Templers West and Magill-Torrens Island A 275kV lines
Duration: 1810 hrs 23/06/2025 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
127748RECLASSIFY CONTINGENCY23/06/2025 06:16:40 PM
Reclassification of a Non-Credible Contingency Event: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines in SA due to severe weather warning.
AEMO ELECTRICITY MARKET NOTICE.
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 to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: SA
Lines: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines
Duration: 1810 hrs 23/06/2025 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
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 to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: SA
Lines: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines
Duration: 1810 hrs 23/06/2025 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
127747MARKET INTERVENTION23/06/2025 07:09:33 PM
Cancellation - Direction - NSW region - 23/06/2025
AEMO ELECTRICITY PARTICIPANT NOTICE
Cancellation - Direction - NSW region - 23/06/2025
Refer to Market Notice 127745.
The requirement for AEMO to issue a direction to maintain the power system in a secure operating state has ended. All associated directions are cancelled from 1907hrs on 23/06/2025.
Manager NEM Real Time Operations
Cancellation - Direction - NSW region - 23/06/2025
Refer to Market Notice 127745.
The requirement for AEMO to issue a direction to maintain the power system in a secure operating state has ended. All associated directions are cancelled from 1907hrs on 23/06/2025.
Manager NEM Real Time Operations
127745MARKET INTERVENTION23/06/2025 06:00:38 PM
Direction - NSW region 23/06/2025
AEMO ELECTRICITY MARKET NOTICE.
Direction - NSW region 23/06/2025
In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the NSW region.
The direction was necessary to maintain the power system in a secure operating state.
AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided.
A further market notice will be issued when all directions related to this requirement have been cancelled.
For the purposes of the National Electricity Rules this was a clause 4.8.9 instruction under clause 4.8.9(a).
Manager NEM Real Time Operations
Direction - NSW region 23/06/2025
In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the NSW region.
The direction was necessary to maintain the power system in a secure operating state.
AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided.
A further market notice will be issued when all directions related to this requirement have been cancelled.
For the purposes of the National Electricity Rules this was a clause 4.8.9 instruction under clause 4.8.9(a).
Manager NEM Real Time Operations
127740MARKET INTERVENTION23/06/2025 02:59:49 PM
Update Direction - AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
AEMO ELECTRICITY MARKET NOTICE.
Update Direction - AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
Refer to Market Notice 127696
The TORRB2 TORRENS ISLAN direction is now expected to stay in place until 0400 hrs 25/06/2025.
The direction update is issued at 1500 hrs 23/06/2025.
Manager NEM Real Time Operations
Update Direction - AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
Refer to Market Notice 127696
The TORRB2 TORRENS ISLAN direction is now expected to stay in place until 0400 hrs 25/06/2025.
The direction update is issued at 1500 hrs 23/06/2025.
Manager NEM Real Time Operations
127696MARKET INTERVENTION22/06/2025 03:01:04 PM
Update Direction - AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
AEMO ELECTRICITY MARKET NOTICE.
Update Direction - AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
Refer to Market Notice 127683
The TORRB2 TORRENS ISLAN direction is now expected to stay in place until 0400 hrs 24/06/2025.
The direction update is issued at 1500 hrs 22/06/2025.
Manager NEM Real Time Operations
Update Direction - AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
Refer to Market Notice 127683
The TORRB2 TORRENS ISLAN direction is now expected to stay in place until 0400 hrs 24/06/2025.
The direction update is issued at 1500 hrs 22/06/2025.
Manager NEM Real Time Operations
127695RECLASSIFY CONTINGENCY22/06/2025 07:14:25 AM
Cancellation of a Non-Credible Contingency Event: Chalumbin - Turkinje No.7165 132 kV line and Chalumbin - Turkinje No.7166 132 kV line in QLD1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: QLD1
Lines: Chalumbin - Turkinje No.7165 132 kV and Chalumbin - Turkinje No.7166 132 kV
Cancellation time: 22/06/2025 07:14
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 127693
Auto-generated on behalf of Manager NEM Real Time Operations
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: QLD1
Lines: Chalumbin - Turkinje No.7165 132 kV and Chalumbin - Turkinje No.7166 132 kV
Cancellation time: 22/06/2025 07:14
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 127693
Auto-generated on behalf of Manager NEM Real Time Operations