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127755RESERVE NOTICE25/06/2025 04:35:24 PM
STPASA - Cancellation of the Forecast Lack Of Reserve Level 1 (LOR1) in the SA Region on 01/07/2025
AEMO ELECTRICITY MARKET NOTICE
The Forecast LOR1 condition in the SA region advised in AEMO Electricity Market Notice No. 127793 has been cancelled at 1500 hrs 25/06/2025.
AEMO Operations
The Forecast LOR1 condition in the SA region advised in AEMO Electricity Market Notice No. 127793 has been cancelled at 1500 hrs 25/06/2025.
AEMO Operations
127753RESERVE NOTICE23/06/2025 09:53:46 PM
STPASA - Forecast Lack Of Reserve Level 3 (LOR3) in the SA Region on 30/06/2025
AEMO ELECTRICITY MARKET NOTICE
AEMO declares a Forecast LOR3 condition under clause 4.8.4(b) of the National Electricity Rules for the SA region for the following period[s]:
[1.] From 0730 hrs 30/06/2025 to 0930 hrs 30/06/2025.
The maximum load (other than interruptible loads) forecast to be interrupted is 87 MW at 0800 hrs.
[2.] From 1700 hrs 30/06/2025 to 2300 hrs 30/06/2025.
The maximum load (other than interruptible loads) forecast to be interrupted is 112 MW at 1900 hrs.
AEMO is seeking a market response.
AEMO has not yet estimated the latest time it would need to intervene through an AEMO intervention event.
Manager NEM Real Time Operations
AEMO declares a Forecast LOR3 condition under clause 4.8.4(b) of the National Electricity Rules for the SA region for the following period[s]:
[1.] From 0730 hrs 30/06/2025 to 0930 hrs 30/06/2025.
The maximum load (other than interruptible loads) forecast to be interrupted is 87 MW at 0800 hrs.
[2.] From 1700 hrs 30/06/2025 to 2300 hrs 30/06/2025.
The maximum load (other than interruptible loads) forecast to be interrupted is 112 MW at 1900 hrs.
AEMO is seeking a market response.
AEMO has not yet estimated the latest time it would need to intervene through an AEMO intervention event.
Manager NEM Real Time Operations
127752RECLASSIFY CONTINGENCY23/06/2025 09:41:56 PM
Reclassification of a Non-Credible Contingency Event: Yallourn - Rowville 7 220 kV line and Yallourn - Rowville 8 220 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: Yallourn - Rowville 7 220 kV and Yallourn - Rowville 8 220 kV
Duration: 23/06/2025 21:41 until further notice
Constraint set(s) invoked:
V-ROYP78_R_N-2 Constraint set contains the following interconnector(s) on the left hand side:
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: Yallourn - Rowville 7 220 kV and Yallourn - Rowville 8 220 kV
Duration: 23/06/2025 21:41 until further notice
Constraint set(s) invoked:
V-ROYP78_R_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
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
127743INTER-REGIONAL TRANSFER23/06/2025 05:44:44 PM
Inter-regional transfer limit variation - Darlington Point - Wagga No.63 330 kV line - NSW region - 23/06/2025
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Darlington Point - Wagga No.63 330 kV line - NSW region - 23/06/2025
At 1719 hrs 23/06/2025 there was an unplanned outage of Darlington Point - Wagga No.63 330 kV line. The Darlington Point - Balranald No. X5 220 kV line consequently tripped due to a control scheme for the trip of the above line as per design.
The following constraint set(s) invoked at 1725 hrs 23/06/2025
N-DPWG_63_X5
This constraint set(s) contains equations with the following interconnectors on the LHS.
VIC1-NSW1,N-Q-MNSP1,NSW1-QLD1,V-S-MNSP1,V-SA
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Darlington Point - Wagga No.63 330 kV line - NSW region - 23/06/2025
At 1719 hrs 23/06/2025 there was an unplanned outage of Darlington Point - Wagga No.63 330 kV line. The Darlington Point - Balranald No. X5 220 kV line consequently tripped due to a control scheme for the trip of the above line as per design.
The following constraint set(s) invoked at 1725 hrs 23/06/2025
N-DPWG_63_X5
This constraint set(s) contains equations with the following interconnectors on the LHS.
VIC1-NSW1,N-Q-MNSP1,NSW1-QLD1,V-S-MNSP1,V-SA
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
127741RESERVE NOTICE23/06/2025 03:01:39 PM
STPASA - Forecast Lack Of Reserve Level 1 (LOR1) in the SA Region on 01/07/2025
AEMO ELECTRICITY MARKET NOTICE
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the SA region for the following period:
From 0230 hrs to 0400 hrs 01/07/2025.
The forecast capacity reserve requirement is 460 MW.
The minimum capacity reserve available is 230 MW.
AEMO Operations
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the SA region for the following period:
From 0230 hrs to 0400 hrs 01/07/2025.
The forecast capacity reserve requirement is 460 MW.
The minimum capacity reserve available is 230 MW.
AEMO Operations