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128160POWER SYSTEM EVENTS18/07/2025 08:49:29 AM
Non-credible contingency event - QLD region - 18/07/2025
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - QLD region - 18/07/2025
At 0825 hrs the H11_Nebo 275/132 kV No.1 Transformer was switched out on a planned outage and the H11_Nebo 275 kV SVC 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 - 18/07/2025
At 0825 hrs the H11_Nebo 275/132 kV No.1 Transformer was switched out on a planned outage and the H11_Nebo 275 kV SVC 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
128159NON-CONFORMANCE18/07/2025 06:30:29 AM
NON-CONFORMANCE Region QLD1 Friday, 18 July 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE QLD1 Region Friday, 18 July 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: DDPS1
Duration: 18/07/2025 06:25 to 18/07/2025 06:30
Amount: -14 MW
Constraint: NC-Q_DDPS1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE QLD1 Region Friday, 18 July 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: DDPS1
Duration: 18/07/2025 06:25 to 18/07/2025 06:30
Amount: -14 MW
Constraint: NC-Q_DDPS1
Auto-generated on behalf of Manager NEM Real Time Operations
128133NON-CONFORMANCE16/07/2025 07:20:23 AM
NON-CONFORMANCE Region QLD1 Wednesday, 16 July 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE QLD1 Region Wednesday, 16 July 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: ULPBESS1
Duration: 16/07/2025 07:10 to 16/07/2025 07:20
Amount: 7 MW
Constraint: NC-Q_ULPBESS1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE QLD1 Region Wednesday, 16 July 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: ULPBESS1
Duration: 16/07/2025 07:10 to 16/07/2025 07:20
Amount: 7 MW
Constraint: NC-Q_ULPBESS1
Auto-generated on behalf of Manager NEM Real Time Operations
128086NON-CONFORMANCE10/07/2025 08:45:11 AM
NON-CONFORMANCE Region NSW1 Thursday, 10 July 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE NSW1 Region Thursday, 10 July 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: WTAHB1
Duration: 10/07/2025 08:40 to 10/07/2025 08:45
Amount: 12 MW
Constraint: NC-N_WTAHB1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE NSW1 Region Thursday, 10 July 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: WTAHB1
Duration: 10/07/2025 08:40 to 10/07/2025 08:45
Amount: 12 MW
Constraint: NC-N_WTAHB1
Auto-generated on behalf of Manager NEM Real Time Operations
128070SETTLEMENTS RESIDUE09/07/2025 08:30:20 PM
[EventId:202507092030_NRM_VIC1_NSW1_stopped] NEGRES CONSTRAINT NRM_VIC1_NSW1 ceased operating from 09 July 2025 20:30
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 2030 hrs on 9 July 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 9 July 2025.
Refer to market notice: 128067
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the VIC to NSW directional interconnector.
The negative residue constraint NRM_VIC1_NSW1 ceased operating at 2030 hrs on 9 July 2025.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 2030 hrs on 9 July 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 9 July 2025.
Refer to market notice: 128067
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the VIC to NSW directional interconnector.
The negative residue constraint NRM_VIC1_NSW1 ceased operating at 2030 hrs on 9 July 2025.
This is an AEMO autogenerated Market Notice.
128067SETTLEMENTS RESIDUE09/07/2025 07:05:23 PM
[EventId:202507091905_NRM_VIC1_NSW1_started] NEGRES CONSTRAINT NRM_VIC1_NSW1 started operating from 09 July 2025 19:05
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1905 hrs on 9 July 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 9 July 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 NSW directional interconnector.
The negative residue constraint set NRM_VIC1_NSW1 commenced operating from 1905 hrs on 9 July 2025.
This constraint set contains an equation with the following interconnectors on the LHS:
VIC1-NSW1
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 1905 hrs on 9 July 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 9 July 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 NSW directional interconnector.
The negative residue constraint set NRM_VIC1_NSW1 commenced operating from 1905 hrs on 9 July 2025.
This constraint set contains an equation with the following interconnectors on the LHS:
VIC1-NSW1
The RHS of the constraint equation may be adjusted to manage residues.
This is an AEMO autogenerated Market Notice.
128066SETTLEMENTS RESIDUE09/07/2025 06:30:29 PM
[EventId:202507091830_NRM_VIC1_NSW1_stopped] NEGRES CONSTRAINT NRM_VIC1_NSW1 ceased operating from 09 July 2025 18:30
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1830 hrs on 9 July 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 9 July 2025.
Refer to market notice: 128065
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the VIC to NSW directional interconnector.
The negative residue constraint NRM_VIC1_NSW1 ceased operating at 1830 hrs on 9 July 2025.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1830 hrs on 9 July 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 9 July 2025.
Refer to market notice: 128065
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the VIC to NSW directional interconnector.
The negative residue constraint NRM_VIC1_NSW1 ceased operating at 1830 hrs on 9 July 2025.
This is an AEMO autogenerated Market Notice.
128065SETTLEMENTS RESIDUE09/07/2025 05:35:22 PM
[EventId:202507091735_NRM_VIC1_NSW1_started] NEGRES CONSTRAINT NRM_VIC1_NSW1 started operating from 09 July 2025 17:35
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1735 hrs on 9 July 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 9 July 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 NSW directional interconnector.
The negative residue constraint set NRM_VIC1_NSW1 commenced operating from 1735 hrs on 9 July 2025.
This constraint set contains an equation with the following interconnectors on the LHS:
VIC1-NSW1
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 1735 hrs on 9 July 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 9 July 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 NSW directional interconnector.
The negative residue constraint set NRM_VIC1_NSW1 commenced operating from 1735 hrs on 9 July 2025.
This constraint set contains an equation with the following interconnectors on the LHS:
VIC1-NSW1
The RHS of the constraint equation may be adjusted to manage residues.
This is an AEMO autogenerated Market Notice.
128063NON-CONFORMANCE09/07/2025 04:30:16 PM
NON-CONFORMANCE Region VIC1 Wednesday, 9 July 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE VIC1 Region Wednesday, 9 July 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MOKOSF1
Duration: 09/07/2025 12:55 to 09/07/2025 16:30
Amount: 15 MW
Constraint: NC-V_MOKOSF1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE VIC1 Region Wednesday, 9 July 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MOKOSF1
Duration: 09/07/2025 12:55 to 09/07/2025 16:30
Amount: 15 MW
Constraint: NC-V_MOKOSF1
Auto-generated on behalf of Manager NEM Real Time Operations