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127823SETTLEMENTS RESIDUE24/06/2025 08:00:35 PM
[EventId:202506242000_NRM_VIC1_SA1_stopped] NEGRES CONSTRAINT NRM_VIC1_SA1 ceased operating from 24 June 2025 20:00
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 2000 hrs on 24 June 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 24 June 2025.
Refer to market notice: 127821
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 24 June 2025.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 2000 hrs on 24 June 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 24 June 2025.
Refer to market notice: 127821
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 24 June 2025.
This is an AEMO autogenerated Market Notice.
127822SETTLEMENTS RESIDUE24/06/2025 08:00:25 PM
[EventId:202506242000_NRM_VIC1_NSW1_stopped] NEGRES CONSTRAINT NRM_VIC1_NSW1 ceased operating from 24 June 2025 20:00
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 2000 hrs on 24 June 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 24 June 2025.
Refer to market notice: 127820
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 2000 hrs on 24 June 2025.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 2000 hrs on 24 June 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 24 June 2025.
Refer to market notice: 127820
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 2000 hrs on 24 June 2025.
This is an AEMO autogenerated Market Notice.
127821SETTLEMENTS RESIDUE24/06/2025 07:10:17 PM
[EventId:202506241910_NRM_VIC1_SA1_started] NEGRES CONSTRAINT NRM_VIC1_SA1 started operating from 24 June 2025 19:10
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1910 hrs on 24 June 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 24 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 1910 hrs on 24 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 1910 hrs on 24 June 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 24 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 1910 hrs on 24 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.
127820SETTLEMENTS RESIDUE24/06/2025 07:05:26 PM
[EventId:202506241905_NRM_VIC1_NSW1_started] NEGRES CONSTRAINT NRM_VIC1_NSW1 started operating from 24 June 2025 19:05
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1905 hrs on 24 June 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 24 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 NSW directional interconnector.
The negative residue constraint set NRM_VIC1_NSW1 commenced operating from 1905 hrs on 24 June 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 24 June 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 24 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 NSW directional interconnector.
The negative residue constraint set NRM_VIC1_NSW1 commenced operating from 1905 hrs on 24 June 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.
127819RESERVE NOTICE24/06/2025 06:42:59 PM
STPASA - Forecast Lack Of Reserve Level 2 (LOR2) in the SA Region beginning on 02/07/2025
AEMO ELECTRICITY MARKET NOTICE
AEMO declares a Forecast LOR2 condition under clause 4.8.4(b) of the National Electricity Rules for the SA region for the following period:
From 0000 hrs 02/07/2025 to 0400 hrs 02/07/2025.
The forecast capacity reserve requirement is 239 MW.
The minimum capacity reserve available is 193 MW.
AEMO is seeking a market response.
AEMO has not yet estimated the latest time at which it would need to intervene through an AEMO intervention event.
Manager NEM Real Time Operations
AEMO declares a Forecast LOR2 condition under clause 4.8.4(b) of the National Electricity Rules for the SA region for the following period:
From 0000 hrs 02/07/2025 to 0400 hrs 02/07/2025.
The forecast capacity reserve requirement is 239 MW.
The minimum capacity reserve available is 193 MW.
AEMO is seeking a market response.
AEMO has not yet estimated the latest time at which it would need to intervene through an AEMO intervention event.
Manager NEM Real Time Operations
127818RESERVE NOTICE24/06/2025 06:42:48 PM
STPASA - Update of the Forecast Lack Of Reserve Level 2 (LOR2) in the SA Region on 01/07/2025
AEMO ELECTRICITY MARKET NOTICE
The Forecast LOR2 condition in the SA region advised in AEMO Electricity Market Notice No. 127812 has been updated at 1830 hrs 24/06/2025 to the following:
[1.] From 0400 hrs 01/07/2025 to 1000 hrs 01/07/2025.
The forecast capacity reserve requirement is 230 MW.
The minimum capacity reserve available is 123 MW.
2. From 1700 hrs to 2359 hrs 01/07/2025.
The forecast capacity reserve requirement is 234 MW.
The minimum capacity reserve available is 97 MW.
AEMO is seeking a market response.
AEMO has not yet estimated the latest time it would need to intervene through an AEMO intervention event.
Manager NEM Real Time Operations
The Forecast LOR2 condition in the SA region advised in AEMO Electricity Market Notice No. 127812 has been updated at 1830 hrs 24/06/2025 to the following:
[1.] From 0400 hrs 01/07/2025 to 1000 hrs 01/07/2025.
The forecast capacity reserve requirement is 230 MW.
The minimum capacity reserve available is 123 MW.
2. From 1700 hrs to 2359 hrs 01/07/2025.
The forecast capacity reserve requirement is 234 MW.
The minimum capacity reserve available is 97 MW.
AEMO is seeking a market response.
AEMO has not yet estimated the latest time it would need to intervene through an AEMO intervention event.
Manager NEM Real Time Operations
127817RECLASSIFY CONTINGENCY24/06/2025 06:26:05 PM
Reclassification of a Non-Credible Contingency Event: Palmerston - Hadspen 3 & 4 110kV line and 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: Palmerston - Hadspen 3 & 4 110kV and
Duration: 24/06/2025 18:25 until further notice
Constraint set(s) invoked:
T-HAPM_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: Palmerston - Hadspen 3 & 4 110kV and
Duration: 24/06/2025 18:25 until further notice
Constraint set(s) invoked:
T-HAPM_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
127816RECLASSIFY CONTINGENCY24/06/2025 06:26:02 PM
Reclassification of a Non-Credible Contingency Event: Norwood - Scottsdale 1 110kV line and Norwood-Derby-Scottsdale 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: Norwood - Scottsdale 1 110kV and Norwood-Derby-Scottsdale 110kV
Duration: 24/06/2025 18:25 until further notice
Constraint set(s) invoked:
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: Norwood - Scottsdale 1 110kV and Norwood-Derby-Scottsdale 110kV
Duration: 24/06/2025 18:25 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
127815RECLASSIFY CONTINGENCY24/06/2025 05:47:40 PM
Reclassification of non-credible contingency event due to existence of widespread abnormal condition/s - SA region.
AEMO ELECTRICITY MARKET NOTICE.
AEMO has identified that a non-credible contingency event impacting the power system is more likely to occur and is considered reasonably possible because of the existence of widespread abnormal conditions namely severe weather in the SA region.
AEMO has therefore reclassified the occurrence of a non-credible contingency event involving multiple plant due to these abnormal conditions as credible.
AEMO has taken the following action to maintain power system security at 1750 hrs 24/06/2025.
Constraint set invoked:
I-VS_250
Duration: 1750 hrs until further notice
Need for further measures is being monitored and further measures may be implemented in line with the Power System Security Guidelines (SO_OP_3715).
Manager NEM Real Time Operations
AEMO has identified that a non-credible contingency event impacting the power system is more likely to occur and is considered reasonably possible because of the existence of widespread abnormal conditions namely severe weather in the SA region.
AEMO has therefore reclassified the occurrence of a non-credible contingency event involving multiple plant due to these abnormal conditions as credible.
AEMO has taken the following action to maintain power system security at 1750 hrs 24/06/2025.
Constraint set invoked:
I-VS_250
Duration: 1750 hrs until further notice
Need for further measures is being monitored and further measures may be implemented in line with the Power System Security Guidelines (SO_OP_3715).
Manager NEM Real Time Operations