Filter by:
Filter by category
Filter by Date
From
To
132616INTER-REGIONAL TRANSFER09/01/2026 02:21:47 PM
Inter-regional transfer limit variation - constraint automation to manage Power System Security in VIC region - 09/01/2026
AEMO ELECTRICITY MARKET NOTICE
In order to maintain the power system in a secure operating state in the VIC region, AEMO has invoked automated constraint set CA_BRIS_58730C07 from 1410 hrs until further notice.
This constraint set contains equations with the following interconnector on the LHS;
V-S-MNSP1
VIC1-NSW1
Manager NEM Real Time Operations
In order to maintain the power system in a secure operating state in the VIC region, AEMO has invoked automated constraint set CA_BRIS_58730C07 from 1410 hrs until further notice.
This constraint set contains equations with the following interconnector on the LHS;
V-S-MNSP1
VIC1-NSW1
Manager NEM Real Time Operations
132615SETTLEMENTS RESIDUE09/01/2026 02:00:20 PM
[EventId:202601091400_NRM_VIC1_SA1_started] NEGRES CONSTRAINT NRM_VIC1_SA1 started operating from 09 January 2026 14:00
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1400 hrs on 9 January 2026
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 9 January 2026.
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 1400 hrs on 9 January 2026.
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 1400 hrs on 9 January 2026
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 9 January 2026.
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 1400 hrs on 9 January 2026.
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.
132614RECLASSIFY CONTINGENCY09/01/2026 01:54:25 PM
Cancellation of a Non-Credible Contingency Event: Tungatinah-Lake Echo-Waddamana 1 110kV line and Tungatinah-Waddamana 2 110kV line in TAS1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS1
Lines: Tungatinah-Lake Echo-Waddamana 1 110kV and Tungatinah-Waddamana 2 110kV
Cancellation time: 09/01/2026 13:54
Constraint set(s) revoked:
T-TUWA12_110_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 132611
Auto-generated on behalf of Manager NEM Real Time Operations
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS1
Lines: Tungatinah-Lake Echo-Waddamana 1 110kV and Tungatinah-Waddamana 2 110kV
Cancellation time: 09/01/2026 13:54
Constraint set(s) revoked:
T-TUWA12_110_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 132611
Auto-generated on behalf of Manager NEM Real Time Operations
132613SETTLEMENTS RESIDUE09/01/2026 01:30:26 PM
[EventId:202601091330_NRM_VIC1_SA1_stopped] NEGRES CONSTRAINT NRM_VIC1_SA1 ceased operating from 09 January 2026 13:30
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1330 hrs on 9 January 2026
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 9 January 2026.
Refer to market notice: 132609
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 1330 hrs on 9 January 2026.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1330 hrs on 9 January 2026
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 9 January 2026.
Refer to market notice: 132609
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 1330 hrs on 9 January 2026.
This is an AEMO autogenerated Market Notice.
132612RECLASSIFY CONTINGENCY09/01/2026 01:29:26 PM
Reclassification of a Non-Credible Contingency Event: Dederang - South Morang No 1 and 2 330kV lines in VIC due to Bushfire.
AEMO ELECTRICITY MARKET NOTICE.
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Bushfire.
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: VIC
Lines: Dederang - South Morang No 1 and 2 330kV lines
Duration:13:25 hrs 09/01/2026 until further notice
Constraint set(s) invoked: V-DDSM
Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Bushfire.
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: VIC
Lines: Dederang - South Morang No 1 and 2 330kV lines
Duration:13:25 hrs 09/01/2026 until further notice
Constraint set(s) invoked: V-DDSM
Manager NEM Real Time Operations
132611RECLASSIFY CONTINGENCY09/01/2026 12:51:21 PM
Reclassification of a Non-Credible Contingency Event: Tungatinah-Lake Echo-Waddamana 1 110kV line and Tungatinah-Waddamana 2 110kV line in TAS1 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: TAS1
Lines: Tungatinah-Lake Echo-Waddamana 1 110kV and Tungatinah-Waddamana 2 110kV
Duration: 09/01/2026 12:51 until further notice
Constraint set(s) invoked:
T-TUWA12_110_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: TAS1
Lines: Tungatinah-Lake Echo-Waddamana 1 110kV and Tungatinah-Waddamana 2 110kV
Duration: 09/01/2026 12:51 until further notice
Constraint set(s) invoked:
T-TUWA12_110_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
132610RECLASSIFY CONTINGENCY09/01/2026 12:29:25 PM
Cancellation of a Non-Credible Contingency Event: Tungatinah-Lake Echo-Waddamana 1 110kV line and Tungatinah-Waddamana 2 110kV line in TAS1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS1
Lines: Tungatinah-Lake Echo-Waddamana 1 110kV and Tungatinah-Waddamana 2 110kV
Cancellation time: 09/01/2026 12:29
Constraint set(s) revoked:
T-TUWA12_110_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 132603
Auto-generated on behalf of Manager NEM Real Time Operations
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS1
Lines: Tungatinah-Lake Echo-Waddamana 1 110kV and Tungatinah-Waddamana 2 110kV
Cancellation time: 09/01/2026 12:29
Constraint set(s) revoked:
T-TUWA12_110_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 132603
Auto-generated on behalf of Manager NEM Real Time Operations
132609SETTLEMENTS RESIDUE09/01/2026 11:30:23 AM
[EventId:202601091130_NRM_VIC1_SA1_started] NEGRES CONSTRAINT NRM_VIC1_SA1 started operating from 09 January 2026 11:30
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1130 hrs on 9 January 2026
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 9 January 2026.
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 1130 hrs on 9 January 2026.
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 1130 hrs on 9 January 2026
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 9 January 2026.
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 1130 hrs on 9 January 2026.
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.
132608POWER SYSTEM EVENTS09/01/2026 11:29:12 AM
Non-credible contingency event - VIC region - 09/01/2026
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - VIC region - 09/01/2026
At 1055 hrs the Geelong Moorabool No 1 and 2 220kV lines 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.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.
Region: VIC
Elements: Geelong Moorabool No 1 and 2 220kV lines
Duration: 11:15 hrs 09/01/2026 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
Non-credible contingency event - VIC region - 09/01/2026
At 1055 hrs the Geelong Moorabool No 1 and 2 220kV lines 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.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.
Region: VIC
Elements: Geelong Moorabool No 1 and 2 220kV lines
Duration: 11:15 hrs 09/01/2026 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations