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128284MARKET INTERVENTION23/07/2025 12:59:36 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 0930 hrs 24/07/2025.
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 0930 hrs 24/07/2025.
The foreseeable circumstance requiring the need for intervention is Voltage.
Manager NEM Real Time Operations
128215NON-CONFORMANCE21/07/2025 06:45:14 PM
NON-CONFORMANCE Region SA1 Monday, 21 July 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE SA1 Region Monday, 21 July 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: BLYTHB1
Duration: 21/07/2025 18:40 to 21/07/2025 18:45
Amount: 11 MW
Constraint: NC-S_BLYTHB1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE SA1 Region Monday, 21 July 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: BLYTHB1
Duration: 21/07/2025 18:40 to 21/07/2025 18:45
Amount: 11 MW
Constraint: NC-S_BLYTHB1
Auto-generated on behalf of Manager NEM Real Time Operations
128213MARKET SYSTEMS21/07/2025 05:08:02 PM
CHG0104553 - Pre-Prod eMDM Maintenance
Change Number: CHG0104553
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: MDM - Meter Data Management_PreProd
Change Title: Pre-Prod eMDM Maintenance Release
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: MDM - Meter Data Management_PreProd
Change Title: Pre-Prod eMDM Maintenance Release
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
128211MARKET SYSTEMS21/07/2025 04:32:59 PM
The Gas B2B hub servers will be updated to support TLS (Transport Layer Security) 1.3 version. Also the legacy versions 1.0 and 1.1 will be disabled and not be supported going forward.
Participants are required to use TLS 1.2 as a minimum protocol to communicate with AEMO, failing to do so will impact the connectivity. An outage is not expected but, there may be some minor interruptions during the change period.
Participants are required to make sure the connectivity is intact post change implementation.
In case of any issues noticed, please reach out to AEMO Support Hub.
CHG0102957|PROD|Enable TLS 1.3 for Gas B2B Hub and disable TLS version 1.0/1.1
The Gas B2B hub servers will be updated to support TLS (Transport Layer Security) 1.3 version. Also the legacy versions 1.0 and 1.1 will be disabled and not be supported going forward.
Participants are required to use TLS 1.2 as a minimum protocol to communicate with AEMO, failing to do so will impact the connectivity. An outage is not expected but, there may be some minor interruptions during the change period.
Participants are required to make sure the connectivity is intact post change implementation.
In case of any issues noticed, please reach out to AEMO Support Hub.
128209NON-CONFORMANCE20/07/2025 03:55:18 PM
NON-CONFORMANCE Region QLD1 Sunday, 20 July 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE QLD1 Region Sunday, 20 July 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: SWAN_E
Duration: 20/07/2025 15:45 to 20/07/2025 15:55
Amount: -51 MW
Constraint: NC-Q_SWAN_E
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE QLD1 Region Sunday, 20 July 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: SWAN_E
Duration: 20/07/2025 15:45 to 20/07/2025 15:55
Amount: -51 MW
Constraint: NC-Q_SWAN_E
Auto-generated on behalf of Manager NEM Real Time Operations
128175POWER SYSTEM EVENTS19/07/2025 01:35:42 PM
Non-credible contingency event - TAS region - 19/07/2025
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - TAS region - 19/07/2025
At 1240 hrs the Liapoota - Wadamana - Palmerston 220 kV line and the Cattle Hill Wind Farm - Wadamana 220 kV line tripped.
AEMO did not instruct load shedding.
AEMO has been advised of a 70 MW load reduction at Nyrstar.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Non-credible contingency event - TAS region - 19/07/2025
At 1240 hrs the Liapoota - Wadamana - Palmerston 220 kV line and the Cattle Hill Wind Farm - Wadamana 220 kV line tripped.
AEMO did not instruct load shedding.
AEMO has been advised of a 70 MW load reduction at Nyrstar.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
128174MARKET INTERVENTION19/07/2025 02:31:53 PM
Cancellation - AEMO Intervention Event - SA region 18/07/2025
AEMO ELECTRICITY MARKET NOTICE
Cancellation - AEMO Intervention Event - SA region 18/07/2025
Refer to Market Notice 128167
The AEMO Intervention Event and all associated directions are cancelled from 1430 hrs on 19/07/2025.
Manager NEM Real Time Operations
Cancellation - AEMO Intervention Event - SA region 18/07/2025
Refer to Market Notice 128167
The AEMO Intervention Event and all associated directions are cancelled from 1430 hrs on 19/07/2025.
Manager NEM Real Time Operations
128173MARKET INTERVENTION19/07/2025 02:31:43 PM
Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
AEMO ELECTRICITY MARKET NOTICE
Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
Refer to Market Notice 128166
Direction is cancelled from: 1430 hrs 19/07/2025
Manager NEM Real Time Operations
Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
Refer to Market Notice 128166
Direction is cancelled from: 1430 hrs 19/07/2025
Manager NEM Real Time Operations
128167MARKET INTERVENTION18/07/2025 02:32:25 PM
Direction - SA region 18/07/2025
AEMO ELECTRICITY MARKET NOTICE
Direction - SA region 18/07/2025
In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the SA region. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a1)(1).
The issue of the direction commences an AEMO intervention event. AEMO declares all trading intervals during the event to be intervention trading intervals, commencing from the interval ending 1435 hrs on 18/07/2025.
Intervention pricing does not apply to this AEMO intervention event.
AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided. A further market notice will be issued when all directions related to this requirement have been cancelled.
Manager NEM Real Time Operations
Direction - SA region 18/07/2025
In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the SA region. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a1)(1).
The issue of the direction commences an AEMO intervention event. AEMO declares all trading intervals during the event to be intervention trading intervals, commencing from the interval ending 1435 hrs on 18/07/2025.
Intervention pricing does not apply to this AEMO intervention event.
AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided. A further market notice will be issued when all directions related to this requirement have been cancelled.
Manager NEM Real Time Operations