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128458POWER SYSTEM EVENTS07/08/2025 05:40:13 AM
Non-credible contingency event - SA region - 07/08/2025
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - SA region - 07/08/2025
At 0507 hrs the Dorrien end of the Templers West to Dorrien 132 kV line and the Templers battery tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Non-credible contingency event - SA region - 07/08/2025
At 0507 hrs the Dorrien end of the Templers West to Dorrien 132 kV line and the Templers battery tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
128457RESERVE NOTICE06/08/2025 03:16:12 PM
PDPASA - Cancellation of the Forecast Lack Of Reserve Level 1 (LOR1) in the VIC Region on 07/08/2025
AEMO ELECTRICITY MARKET NOTICE
The Forecast LOR1 condition in the VIC region advised in AEMO Electricity Market Notice No. 128455 is cancelled at 1515 hrs 06/08/2025.
Manager NEM Real Time Operations
The Forecast LOR1 condition in the VIC region advised in AEMO Electricity Market Notice No. 128455 is cancelled at 1515 hrs 06/08/2025.
Manager NEM Real Time Operations
128456RESERVE NOTICE06/08/2025 03:07:57 PM
STPASA - Cancellation of the Forecast Lack Of Reserve Level 1 (LOR1) in the TAS Region on 07/08/2025
AEMO ELECTRICITY MARKET NOTICE
The Forecast LOR1 condition in the TAS region advised in AEMO Electricity Market Notice No. 128430 is cancelled at 1400 hrs 06/08/2025.
AEMO Operations
The Forecast LOR1 condition in the TAS region advised in AEMO Electricity Market Notice No. 128430 is cancelled at 1400 hrs 06/08/2025.
AEMO Operations
128455RESERVE NOTICE06/08/2025 01:25:22 PM
PDPASA - Forecast Lack Of Reserve Level 1 (LOR1) in the VIC Region on 07/08/2025
AEMO ELECTRICITY MARKET NOTICE
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the VIC region for the following Period:
[1.] From 0730 hrs 07/08/2025 to 0800 hrs 07/08/2025.
The forecast capacity reserve requirement is 1148 MW.
The minimum capacity reserve available is 942 MW.
Manager NEM Real Time Operations
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the VIC region for the following Period:
[1.] From 0730 hrs 07/08/2025 to 0800 hrs 07/08/2025.
The forecast capacity reserve requirement is 1148 MW.
The minimum capacity reserve available is 942 MW.
Manager NEM Real Time Operations
128434SETTLEMENTS RESIDUE04/08/2025 08:00:21 PM
[EventId:202508042000_NRM_VIC1_SA1_stopped] NEGRES CONSTRAINT NRM_VIC1_SA1 ceased operating from 04 August 2025 20:00
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 2000 hrs on 4 August 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 4 August 2025.
Refer to market notice: 128433
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the VIC to SA directional interconnector.
The negative residue constraint NRM_VIC1_SA1 ceased operating at 2000 hrs on 4 August 2025.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 2000 hrs on 4 August 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 4 August 2025.
Refer to market notice: 128433
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the VIC to SA directional interconnector.
The negative residue constraint NRM_VIC1_SA1 ceased operating at 2000 hrs on 4 August 2025.
This is an AEMO autogenerated Market Notice.
128433SETTLEMENTS RESIDUE04/08/2025 07:00:29 PM
[EventId:202508041900_NRM_VIC1_SA1_started] NEGRES CONSTRAINT NRM_VIC1_SA1 started operating from 04 August 2025 19:00
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1900 hrs on 4 August 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 4 August 2025.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the VIC to SA directional interconnector.
The negative residue constraint set NRM_VIC1_SA1 commenced operating from 1900 hrs on 4 August 2025.
This constraint set contains an equation with the following interconnectors on the LHS:
V-S-MNSP1
V-SA
The RHS of the constraint equation may be adjusted to manage residues.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1900 hrs on 4 August 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 4 August 2025.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the VIC to SA directional interconnector.
The negative residue constraint set NRM_VIC1_SA1 commenced operating from 1900 hrs on 4 August 2025.
This constraint set contains an equation with the following interconnectors on the LHS:
V-S-MNSP1
V-SA
The RHS of the constraint equation may be adjusted to manage residues.
This is an AEMO autogenerated Market Notice.
128430RESERVE NOTICE04/08/2025 02:40:03 PM
STPASA - Forecast Lack Of Reserve Level 1 (LOR1) in the TAS Region on 07/08/2025
AEMO ELECTRICITY MARKET NOTICE
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the TAS region for the following period:
From 0730 hrs to 0830 hrs 07/08/2025.
The forecast capacity reserve requirement is 582 MW.
The minimum capacity reserve available is 549 MW.
AEMO Operations
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the TAS region for the following period:
From 0730 hrs to 0830 hrs 07/08/2025.
The forecast capacity reserve requirement is 582 MW.
The minimum capacity reserve available is 549 MW.
AEMO Operations
128360SETTLEMENTS RESIDUE26/07/2025 09:00:21 AM
[EventId:202507260900_NRM_SA1_VIC1_stopped] NEGRES CONSTRAINT NRM_SA1_VIC1 ceased operating from 26 July 2025 09:00
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0900 hrs on 26 July 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - SA to VIC - 26 July 2025.
Refer to market notice: 128358
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the SA to VIC directional interconnector.
The negative residue constraint NRM_SA1_VIC1 ceased operating at 0900 hrs on 26 July 2025.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 0900 hrs on 26 July 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - SA to VIC - 26 July 2025.
Refer to market notice: 128358
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the SA to VIC directional interconnector.
The negative residue constraint NRM_SA1_VIC1 ceased operating at 0900 hrs on 26 July 2025.
This is an AEMO autogenerated Market Notice.
128359POWER SYSTEM EVENTS26/07/2025 08:58:23 AM
Update - Non-credible contingency event - NSW region - 26/07/2025
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - NSW region - 26/07/2025
Refer AEMO Electricity Market Notice 128353
At 0832 hrs the Canberra A 132kV Bus was returned to service.
The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
Update - Non-credible contingency event - NSW region - 26/07/2025
Refer AEMO Electricity Market Notice 128353
At 0832 hrs the Canberra A 132kV Bus was returned to service.
The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations