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127970RECLASSIFY CONTINGENCY06/07/2025 03:21:15 PM
Reclassification of a Non-Credible Contingency Event: Bayswater - Mt Piper No.5A3 500kV line and Wollar - Mt Piper No.5A5 500kV line in NSW1 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: NSW1
Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV
Duration: 06/07/2025 15:21 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: NSW1
Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV
Duration: 06/07/2025 15:21 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
127967RECLASSIFY CONTINGENCY06/07/2025 02:50:20 PM
Reclassification of a Non-Credible Contingency Event: Bannaby - Mt Piper 5A6 500kV line and Bannaby - Mt Piper 5A7 500kV line in NSW1 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: NSW1
Lines: Bannaby - Mt Piper 5A6 500kV and Bannaby - Mt Piper 5A7 500kV
Duration: 06/07/2025 14:50 until further notice
Constraint set(s) invoked:
N-5A6+5A7_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
VIC1-NSW1
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: NSW1
Lines: Bannaby - Mt Piper 5A6 500kV and Bannaby - Mt Piper 5A7 500kV
Duration: 06/07/2025 14:50 until further notice
Constraint set(s) invoked:
N-5A6+5A7_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
VIC1-NSW1
Auto-generated on behalf of Manager NEM Real Time Operations
127964MARKET INTERVENTION06/07/2025 02:37:15 PM
Update - Foreseeable AEMO intervention in SA region
AEMO ELECTRICITY MARKET NOTICE
Update - Foreseeable AEMO intervention in SA region
Refer AEMO Electricity Market Notice 127960
AEMO has identified a foreseeable circumstance that may require an AEMO intervention event in the SA region from 2230 hrs 07/07/2025.
The foreseeable circumstance requiring the need for intervention is Voltage
AEMO estimates that, in the absence of sufficient market response by 1700 hrs 06/07/2025, 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 127960
AEMO has identified a foreseeable circumstance that may require an AEMO intervention event in the SA region from 2230 hrs 07/07/2025.
The foreseeable circumstance requiring the need for intervention is Voltage
AEMO estimates that, in the absence of sufficient market response by 1700 hrs 06/07/2025, AEMO may need to intervene by issuing a direction.
Manager NEM Real Time Operations
127963MARKET INTERVENTION06/07/2025 02:23:44 PM
Cancellation - AEMO Intervention Event - SA region 05/07/2025
AEMO ELECTRICITY MARKET NOTICE
Cancellation - AEMO Intervention Event - SA region 05/07/2025
Refer to Market Notice 127952
The AEMO Intervention Event and all associated directions are cancelled from 1430 hrs on 06/07/2025.
Manager NEM Real Time Operations
Cancellation - AEMO Intervention Event - SA region 05/07/2025
Refer to Market Notice 127952
The AEMO Intervention Event and all associated directions are cancelled from 1430 hrs on 06/07/2025.
Manager NEM Real Time Operations
127962MARKET INTERVENTION06/07/2025 02:23:24 PM
Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN
AEMO ELECTRICITY MARKET NOTICE
Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN
Refer to Market Notice 127953
Direction is cancelled from: 1430 hrs 06/07/2025
Manager NEM Real Time Operations
Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN
Refer to Market Notice 127953
Direction is cancelled from: 1430 hrs 06/07/2025
Manager NEM Real Time Operations
127960MARKET INTERVENTION06/07/2025 01:05:57 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 1130 hrs 07/07/2025.
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 1130 hrs 07/07/2025.
The foreseeable circumstance requiring the need for intervention is Voltage.
Manager NEM Real Time Operations
127955MARKET INTERVENTION05/07/2025 02:55:44 PM
Cancellation - AEMO Intervention Event - SA region 04/07/2025
AEMO ELECTRICITY MARKET NOTICE
Cancellation - AEMO Intervention Event - SA region 04/07/2025
Refer to Market Notice 127935
The AEMO Intervention Event and all associated directions are cancelled from 1500 hrs on 05/07/2025.
Manager NEM Real Time Operations
Cancellation - AEMO Intervention Event - SA region 04/07/2025
Refer to Market Notice 127935
The AEMO Intervention Event and all associated directions are cancelled from 1500 hrs on 05/07/2025.
Manager NEM Real Time Operations
127954MARKET INTERVENTION05/07/2025 02:55:38 PM
Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN
AEMO ELECTRICITY MARKET NOTICE
Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN
Refer to Market Notice 127936
Direction is cancelled from: 1500 hrs 05/07/2025
Manager NEM Real Time Operations
Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN
Refer to Market Notice 127936
Direction is cancelled from: 1500 hrs 05/07/2025
Manager NEM Real Time Operations
127953MARKET INTERVENTION05/07/2025 01:55:02 PM
Direction - SA region to AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN
AEMO ELECTRICITY MARKET NOTICE
Direction - SA region to AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN
Refer to Market Notice 127952
In accordance with section 116 of the National Electricity Law, AEMO is issuing a direction to AGL SA Generation Pty Limited. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a1)(1).
Direction issued to: AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN at 1400 hrs 05/07/2025
Type of resource: generating unit
Required actions: Remain synchronised and follow dispatch targets at 2200 hrs 05/07/2025
Services provided: Voltage Control
Circumstances necessitating the Direction: Voltage
Circumstances necessitating the Direction additional detail: The synchronous generating units currently expected to be synchronised in SA will be inadequate to maintain sufficient Voltage Control in SA. Intervention is required to maintain the power system in a secure operating state
Expected duration: 1430 hrs 06/07/2025.
AGL SA Generation Pty Limited does not incur any civil monetary liability for a relevant action taken in accordance with this direction unless the action is taken in bad faith.
Manager NEM Real Time Operations
Direction - SA region to AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN
Refer to Market Notice 127952
In accordance with section 116 of the National Electricity Law, AEMO is issuing a direction to AGL SA Generation Pty Limited. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a1)(1).
Direction issued to: AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN at 1400 hrs 05/07/2025
Type of resource: generating unit
Required actions: Remain synchronised and follow dispatch targets at 2200 hrs 05/07/2025
Services provided: Voltage Control
Circumstances necessitating the Direction: Voltage
Circumstances necessitating the Direction additional detail: The synchronous generating units currently expected to be synchronised in SA will be inadequate to maintain sufficient Voltage Control in SA. Intervention is required to maintain the power system in a secure operating state
Expected duration: 1430 hrs 06/07/2025.
AGL SA Generation Pty Limited does not incur any civil monetary liability for a relevant action taken in accordance with this direction unless the action is taken in bad faith.
Manager NEM Real Time Operations