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127626GENERAL NOTICE17/06/2025 01:30:24 PM
Planned outage of Moorabool - Cressy No 1 500 kV line in the VIC region on 19/06/2025
AEMO ELECTRICITY MARKET NOTICE
The Moorabool - Cressy No 1 500 kV line in the Victoria (VIC) region is planned to be out of service from 0600 hrs to 1700 hrs on 19/06/2025.
A credible contingency event during this planned outage could cause synchronous separation of the South Australia (SA) region from the rest of the NEM.
During this planned outage:
* Power transfer will be restricted across the VIC - SA interconnector (Heywood interconnector); and
* Post contingent FCAS will be sourced within SA following Separation event.
Refer AEMO Network Outage Schedule (NOS) for further details.
AEMO Operations
The Moorabool - Cressy No 1 500 kV line in the Victoria (VIC) region is planned to be out of service from 0600 hrs to 1700 hrs on 19/06/2025.
A credible contingency event during this planned outage could cause synchronous separation of the South Australia (SA) region from the rest of the NEM.
During this planned outage:
* Power transfer will be restricted across the VIC - SA interconnector (Heywood interconnector); and
* Post contingent FCAS will be sourced within SA following Separation event.
Refer AEMO Network Outage Schedule (NOS) for further details.
AEMO Operations
127596SETTLEMENTS RESIDUE16/06/2025 11:45:29 AM
[EventId:202506161145_NRM_VIC1_SA1_stopped] NEGRES CONSTRAINT NRM_VIC1_SA1 ceased operating from 16 June 2025 11:45
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1145 hrs on 16 June 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 16 June 2025.
Refer to market notice: 127594
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 1145 hrs on 16 June 2025.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1145 hrs on 16 June 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 16 June 2025.
Refer to market notice: 127594
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 1145 hrs on 16 June 2025.
This is an AEMO autogenerated Market Notice.
127594SETTLEMENTS RESIDUE16/06/2025 11:05:23 AM
[EventId:202506161105_NRM_VIC1_SA1_started] NEGRES CONSTRAINT NRM_VIC1_SA1 started operating from 16 June 2025 11:05
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1105 hrs on 16 June 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 16 June 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 1105 hrs on 16 June 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 1105 hrs on 16 June 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 16 June 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 1105 hrs on 16 June 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.
127581SETTLEMENTS RESIDUE16/06/2025 10:30:20 AM
[EventId:202506161030_NRM_VIC1_SA1_stopped] NEGRES CONSTRAINT NRM_VIC1_SA1 ceased operating from 16 June 2025 10:30
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1030 hrs on 16 June 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 16 June 2025.
Refer to market notice: 127578
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 1030 hrs on 16 June 2025.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1030 hrs on 16 June 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 16 June 2025.
Refer to market notice: 127578
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 1030 hrs on 16 June 2025.
This is an AEMO autogenerated Market Notice.
127578SETTLEMENTS RESIDUE16/06/2025 09:35:29 AM
[EventId:202506160935_NRM_VIC1_SA1_started] NEGRES CONSTRAINT NRM_VIC1_SA1 started operating from 16 June 2025 09:35
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0935 hrs on 16 June 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 16 June 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 0935 hrs on 16 June 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 0935 hrs on 16 June 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 16 June 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 0935 hrs on 16 June 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.
127502POWER SYSTEM EVENTS15/06/2025 11:14:11 AM
Update - Non-credible contingency event - QLD region - 11/06/2025
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - QLD region - 11/06/2025
Refer AEMO Electricity Market Notice 127500
At 1050 hrs the Belmont - Loganlea 829 275 kV line was returned to service and previously (11/06/25) the Belmont (H3) No. 1 275 kV bus had 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 - QLD region - 11/06/2025
Refer AEMO Electricity Market Notice 127500
At 1050 hrs the Belmont - Loganlea 829 275 kV line was returned to service and previously (11/06/25) the Belmont (H3) No. 1 275 kV bus had 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
127500POWER SYSTEM EVENTS11/06/2025 06:05:55 PM
Update - Non-credible contingency event - QLD region - 11/06/2025
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - QLD region - 11/06/2025
Refer AEMO Electricity Market Notice 127499
At 1713 hrs the Belmont (H3) No.1 275 kV bus and Loganlea - Belmont (829) 275 kV line 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
Update - Non-credible contingency event - QLD region - 11/06/2025
Refer AEMO Electricity Market Notice 127499
At 1713 hrs the Belmont (H3) No.1 275 kV bus and Loganlea - Belmont (829) 275 kV line 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
127499POWER SYSTEM EVENTS11/06/2025 05:24:51 PM
Non-credible contingency event - QLD region - 11/06/2025
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - QLD region - 11/06/2025
At 1713 hrs the Belmont (H3) No.1 275 kV bus 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 - QLD region - 11/06/2025
At 1713 hrs the Belmont (H3) No.1 275 kV bus 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
127474GENERAL NOTICE08/06/2025 12:12:12 AM
Network Augmentation Commissioned - NSW Region - 07/06/2025
AEMO ELECTRICITY MARKET NOTICE
A network augmentation has been commissioned in the NSW region at 2350 hrs 07/06/2025 as follows:
Culcairn Solar Farm substation has been cut into the existing Walla Walla - Wagga 6Y 330 kV Transmission Line to form the following circuits:
Culcairn - Walla Walla 6Y 330 kV Transmission Line
Walla Walla - Wagga 3G 330 kV Transmission Line
Manager NEM Real Time Operations
A network augmentation has been commissioned in the NSW region at 2350 hrs 07/06/2025 as follows:
Culcairn Solar Farm substation has been cut into the existing Walla Walla - Wagga 6Y 330 kV Transmission Line to form the following circuits:
Culcairn - Walla Walla 6Y 330 kV Transmission Line
Walla Walla - Wagga 3G 330 kV Transmission Line
Manager NEM Real Time Operations