Filter by:
Filter by category
Filter by Date
From
To
128448INTER-REGIONAL TRANSFER05/08/2025 08:43:31 PM
Inter-regional transfer limit variation - South East 275 kV No. 2 SVC - SA region - 05/08/2025
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - South East 275 kV No. 2 SVC - SA region - 05/08/2025
At 2036 hrs 05/08/2025 there was an unplanned outage of South East 275 kV No. 2 SVC.
The following constraint set(s) invoked at 2045 hrs 05/08/2025
S-SE_VC1
This constraint set(s) contains equations with the following interconnectors on the LHS.
V-SA
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - South East 275 kV No. 2 SVC - SA region - 05/08/2025
At 2036 hrs 05/08/2025 there was an unplanned outage of South East 275 kV No. 2 SVC.
The following constraint set(s) invoked at 2045 hrs 05/08/2025
S-SE_VC1
This constraint set(s) contains equations with the following interconnectors on the LHS.
V-SA
Refer to the AEMO Network Outage Scheduler for further information.
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
128420INTER-REGIONAL TRANSFER02/08/2025 12:56:53 PM
Inter-regional transfer limit variation - constraint automation to manage Power System Security in NSW region - 02/08/2025
AEMO ELECTRICITY MARKET NOTICE
In order to maintain the power system in a secure operating state in the NSW region, AEMO has invoked automated constraint set CA_BRIS_57A00625 from 1235 hrs until further notice.
This constraint set contains equations with the following interconnector on the LHS;
N-Q-MNSP1
NSW1-QLD1
Manager NEM Real Time Operations
In order to maintain the power system in a secure operating state in the NSW region, AEMO has invoked automated constraint set CA_BRIS_57A00625 from 1235 hrs until further notice.
This constraint set contains equations with the following interconnector on the LHS;
N-Q-MNSP1
NSW1-QLD1
Manager NEM Real Time Operations
128379INTER-REGIONAL TRANSFER27/07/2025 10:56:17 AM
Inter-regional transfer limit variation - South_East N 275kV BUS- SA region - 27/07/2025
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - South_East N 275kV BUS - SA region - 27/07/2025
A planned outage of South_East N 275kV BUS in the SA region was scheduled from 0730 hrs 23/07/2025 to 1730 hrs 27/07/2025.
The outage has been completed and South_East N 275kV BUSt returned to service at 1100 hrs 27/07/2025
Constraint set(s) revoked: S-SECB6611_10
Manager NEM Real Time Operations
Inter-regional transfer limit variation - South_East N 275kV BUS - SA region - 27/07/2025
A planned outage of South_East N 275kV BUS in the SA region was scheduled from 0730 hrs 23/07/2025 to 1730 hrs 27/07/2025.
The outage has been completed and South_East N 275kV BUSt returned to service at 1100 hrs 27/07/2025
Constraint set(s) revoked: S-SECB6611_10
Manager NEM Real Time 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
128358SETTLEMENTS RESIDUE26/07/2025 08:05:28 AM
[EventId:202507260805_NRM_SA1_VIC1_started] NEGRES CONSTRAINT NRM_SA1_VIC1 started operating from 26 July 2025 08:05
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0805 hrs on 26 July 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - SA to VIC - 26 July 2025.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the SA to VIC directional interconnector.
The negative residue constraint set NRM_SA1_VIC1 commenced operating from 0805 hrs on 26 July 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 0805 hrs on 26 July 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - SA to VIC - 26 July 2025.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the SA to VIC directional interconnector.
The negative residue constraint set NRM_SA1_VIC1 commenced operating from 0805 hrs on 26 July 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.