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127492INTER-REGIONAL TRANSFER10/06/2025 10:35:15 AM
Inter-regional transfer limit variation - Middle Ridge - Greenbank (8848) 275 kV LINE- QLD region - 10/06/2025
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Middle Ridge - Greenbank (8848) 275 kV LINE - QLD region - 10/06/2025
At 1000 hrs 10/06/2025 there was a short notice outage of Middle Ridge - Greenbank (8848) 275 kV LINE.
The following constraint set(s) invoked at 1030 hrs 10/06/2025
Q-MRGB_8848_8849
This constraint set(s) contains equations with the following interconnectors on the LHS.
N-Q-MNSP1,NSW1-QLD1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Middle Ridge - Greenbank (8848) 275 kV LINE - QLD region - 10/06/2025
At 1000 hrs 10/06/2025 there was a short notice outage of Middle Ridge - Greenbank (8848) 275 kV LINE.
The following constraint set(s) invoked at 1030 hrs 10/06/2025
Q-MRGB_8848_8849
This constraint set(s) contains equations with the following interconnectors on the LHS.
N-Q-MNSP1,NSW1-QLD1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
127484MARKET SYSTEMS09/06/2025 01:25:11 AM
INC0145687 - RESOLVED - Frequency Performance Payments (FPP) System
INC0145687 - RESOLVED - Frequency Performance Payments (FPP) System
AEMO ELECTRICITY MARKET NOTICE
SERVICE INTERRUPTION - RESOLVED
The service interruption relating to Frequency Performance Payments (FPP) System has been resolved.
The FPP System started normal operations from 00:25 Hrs AEST on 09/06/2025
Default Contribution Factors (DCFs) will be used for Regulation Frequency Control Ancillary Service (FCAS) recovery for the trading intervals where CFs were not calculated. No FPP amount will be paid or due for those Trading Intervals.
For further enquiries please contact the AEMO Support Hub
Phone: 1300 236 600
Email: supporthub@aemo.com.au
AEMO IT Duty Manager
AEMO ELECTRICITY MARKET NOTICE
SERVICE INTERRUPTION - RESOLVED
The service interruption relating to Frequency Performance Payments (FPP) System has been resolved.
The FPP System started normal operations from 00:25 Hrs AEST on 09/06/2025
Default Contribution Factors (DCFs) will be used for Regulation Frequency Control Ancillary Service (FCAS) recovery for the trading intervals where CFs were not calculated. No FPP amount will be paid or due for those Trading Intervals.
For further enquiries please contact the AEMO Support Hub
Phone: 1300 236 600
Email: supporthub@aemo.com.au
AEMO IT Duty Manager
127483MARKET SYSTEMS09/06/2025 12:02:59 AM
INC0145687 - ALERT - Frequency Performance Payments (FPP) Syste
INC0145687 - ALERT - Frequency Performance Payments (FPP) System
AEMO ELECTRICITY MARKET NOTICE
SERVICE INTERRUPTION - ALERT
AEMO is experiencing a service interruption relating to Frequency Performance Payments (FPP) System.
The service interruption started from 20:25 hrs AEST on 08/06/2025. The participants will experience a delay in receiving FPP factors.
AEMO is working on resolving the issue and will provide updates as more information becomes available.
For further enquiries please contact the AEMO Support Hub
Phone: 1300 236 600
Email: supporthub@aemo.com.au
AEMO ELECTRICITY MARKET NOTICE
SERVICE INTERRUPTION - ALERT
AEMO is experiencing a service interruption relating to Frequency Performance Payments (FPP) System.
The service interruption started from 20:25 hrs AEST on 08/06/2025. The participants will experience a delay in receiving FPP factors.
AEMO is working on resolving the issue and will provide updates as more information becomes available.
For further enquiries please contact the AEMO Support Hub
Phone: 1300 236 600
Email: supporthub@aemo.com.au
127473RECLASSIFY CONTINGENCY07/06/2025 11:47:43 PM
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.
AEMO ELECTRICITY MARKET NOTICE.
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: 2345 hrs 7/06/2025
Constraint set(s) revoked: Nil
Refer AEMO Electricity Market Notice 127419
Manager NEM Real Time Operations
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: 2345 hrs 7/06/2025
Constraint set(s) revoked: Nil
Refer AEMO Electricity Market Notice 127419
Manager NEM Real Time Operations
127472RECLASSIFY CONTINGENCY07/06/2025 11:47:22 PM
Cancellation of the 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.
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: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines
Cancellation time: 2345 hrs 7/06/2025
Constraint set(s) revoked: Nil
Refer AEMO Electricity Market Notice 127418
Manager NEM Real Time Operations
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: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines
Cancellation time: 2345 hrs 7/06/2025
Constraint set(s) revoked: Nil
Refer AEMO Electricity Market Notice 127418
Manager NEM Real Time Operations
127471RECLASSIFY CONTINGENCY07/06/2025 11:47:12 PM
Cancellation: Reclassification of non-credible contingency event due to existence of widespread abnormal conditions - SA region.
AEMO ELECTRICITY MARKET NOTICE.
AEMO considers the occurrence of a non-credible contingency event due to the widespread abnormal conditions advised in AEMO Electricity Market Notice 127450 is no longer reasonably possible and accordingly its classification has reverted to non-credible.
Cancellation time: 2345 hrs 7/06/2025
Constraint set(s) revoked:
I-VS_250
Manager NEM Real Time Operations
AEMO considers the occurrence of a non-credible contingency event due to the widespread abnormal conditions advised in AEMO Electricity Market Notice 127450 is no longer reasonably possible and accordingly its classification has reverted to non-credible.
Cancellation time: 2345 hrs 7/06/2025
Constraint set(s) revoked:
I-VS_250
Manager NEM Real Time Operations
127450RECLASSIFY CONTINGENCY07/06/2025 12:51:59 PM
Reclassification of non-credible contingency event due to existence of widespread abnormal condition/s - 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 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 to maintain power system security at 1250 hrs 07/06/2025.
Constraint set invoked:
I-VS_250
Duration: 1255 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
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 to maintain power system security at 1250 hrs 07/06/2025.
Constraint set invoked:
I-VS_250
Duration: 1255 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
127449INTER-REGIONAL TRANSFER07/06/2025 12:06:39 PM
Cancellation Inter-Regional Transfer limit variation - Murraylink control unavailable (SA Region)
AEMO ELECTRICITY MARKET NOTICE
Cancellation Inter-Regional Transfer limit variation - Murraylink control unavailable (SA Region)
Refer AEMO Electricity Market Notice 127439
AEMO has been notified that the controls to vary Murraylink output are now available.
Constraint set I-CTRL_ISSUE_ML revoked at 1150 hrs.
Manager NEM Real Time Operations
Cancellation Inter-Regional Transfer limit variation - Murraylink control unavailable (SA Region)
Refer AEMO Electricity Market Notice 127439
AEMO has been notified that the controls to vary Murraylink output are now available.
Constraint set I-CTRL_ISSUE_ML revoked at 1150 hrs.
Manager NEM Real Time Operations
127448INTER-REGIONAL TRANSFER07/06/2025 12:06:34 PM
Cancellation Inter-Regional Transfer limit variation - Directlink control unavailable (NSW Region).
AEMO ELECTRICITY MARKET NOTICE
Cancellation Inter-Regional Transfer limit variation - Directlink control unavailable (NSW Region).
Refer AEMO Electricity Market Notice 127438
AEMO has been notified that the controls to vary Directlink output are now available.
Constraint set I-CTRL_ISSUE_TE revoked at 1150 hrs.
Manager NEM Real Time Operations
Cancellation Inter-Regional Transfer limit variation - Directlink control unavailable (NSW Region).
Refer AEMO Electricity Market Notice 127438
AEMO has been notified that the controls to vary Directlink output are now available.
Constraint set I-CTRL_ISSUE_TE revoked at 1150 hrs.
Manager NEM Real Time Operations