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128377MARKET INTERVENTION26/07/2025 04:52:58 PM
Update Direction - AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
AEMO ELECTRICITY MARKET NOTICE.
Update Direction - AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
Refer to Market Notice 128318
The TORRB2 TORRENS ISLAN direction is now expected to stay in place until 0400 hrs 28/07/2025.
The direction update is issued at 1700 hrs 26/07/2025.
Manager NEM Real Time Operations
Update Direction - AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
Refer to Market Notice 128318
The TORRB2 TORRENS ISLAN direction is now expected to stay in place until 0400 hrs 28/07/2025.
The direction update is issued at 1700 hrs 26/07/2025.
Manager NEM Real Time Operations
128376MARKET INTERVENTION26/07/2025 02:13:59 PM
Update - Foreseeable AEMO intervention in SA region
AEMO ELECTRICITY MARKET NOTICE
Update - Foreseeable AEMO intervention in SA region
Refer AEMO Electricity Market Notice 128373
AEMO has identified a foreseeable circumstance that may require an AEMO intervention event in the SA region from 2230 hrs 26/07/2025.
The foreseeable circumstance requiring the need for intervention is Voltage.
AEMO estimates that, in the absence of sufficient market response by 1700 hrs 26/07/2025, AEMO may need to intervene by issuing a direction.
Manager NEM Real Time Operations
Update - Foreseeable AEMO intervention in SA region
Refer AEMO Electricity Market Notice 128373
AEMO has identified a foreseeable circumstance that may require an AEMO intervention event in the SA region from 2230 hrs 26/07/2025.
The foreseeable circumstance requiring the need for intervention is Voltage.
AEMO estimates that, in the absence of sufficient market response by 1700 hrs 26/07/2025, AEMO may need to intervene by issuing a direction.
Manager NEM Real Time Operations
128375NON-CONFORMANCE26/07/2025 02:05:19 PM
NON-CONFORMANCE Region VIC1 Saturday, 26 July 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE VIC1 Region Saturday, 26 July 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: KESSB1
Duration: 26/07/2025 13:40 to 26/07/2025 14:05
Amount: 55 MW
Constraint: NC-V_KESSB1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE VIC1 Region Saturday, 26 July 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: KESSB1
Duration: 26/07/2025 13:40 to 26/07/2025 14:05
Amount: 55 MW
Constraint: NC-V_KESSB1
Auto-generated on behalf of Manager NEM Real Time Operations
128374NON-CONFORMANCE26/07/2025 01:00:19 PM
NON-CONFORMANCE Region VIC1 Saturday, 26 July 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE VIC1 Region Saturday, 26 July 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: RANGEB1
Duration: 26/07/2025 12:45 to 26/07/2025 13:00
Amount: 102 MW
Constraint: NC-V_RANGEB1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE VIC1 Region Saturday, 26 July 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: RANGEB1
Duration: 26/07/2025 12:45 to 26/07/2025 13:00
Amount: 102 MW
Constraint: NC-V_RANGEB1
Auto-generated on behalf of Manager NEM Real Time Operations
128373MARKET INTERVENTION26/07/2025 01:18:35 PM
Foreseeable AEMO intervention under clause 4.8.5A (a) of the NER in SA region
AEMO ELECTRICITY MARKET NOTICE
Foreseeable AEMO intervention under clause 4.8.5A (a) of the NER in SA region
AEMO has identified a foreseeable circumstance that may require an AEMO intervention event in the SA region from 2230 hrs 26/07/2025.
The foreseeable circumstance requiring the need for intervention is Voltage.
Manager NEM Real Time Operations
Foreseeable AEMO intervention under clause 4.8.5A (a) of the NER in SA region
AEMO has identified a foreseeable circumstance that may require an AEMO intervention event in the SA region from 2230 hrs 26/07/2025.
The foreseeable circumstance requiring the need for intervention is Voltage.
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.
128353POWER SYSTEM EVENTS26/07/2025 06:00:15 AM
Non-credible contingency event - NSW region - 26/07/2025
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - NSW region - 26/07/2025
At 0449 hrs the Canberra 132 kV A Bus and the Canberra to Latham A2 132 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
Non-credible contingency event - NSW region - 26/07/2025
At 0449 hrs the Canberra 132 kV A Bus and the Canberra to Latham A2 132 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