Market Notices

Change Number: CHG0101808

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: EMMS - Data Store
Change Title: Pre-production EMMS database Maintainence activity
Change Start Date & Time: 11/03/2025 01:00:00
Change End Date & Time: 19/03/2025 17:00:00
Outage Start Date & Time: 13/03/2025 12:00:00
Outage End Date & Time: 13/03/2025 15:00:00
Environment: Pre-Production
Participant Impact and Requirements: The Electricity Market Management System (EMMS) , Gas Supply Hub (GSH) and FPP Pre-Production environment will be unavailable during the outage window.

Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities .

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE QLD1 Region Thursday, 13 March 2025

AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:

Unit: MPP_1
Duration: 13/03/2025 06:55 to 13/03/2025 07:00
Amount: -67 MW
Constraint: NC-Q_MPP_1

Auto-generated on behalf of Manager NEM Real Time Operations

Change Number: CHG0101808

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: EMMS - Data Store
Change Title: Pre-production EMMS database Maintainence activity
Change Start Date & Time: 11/03/2025 01:00:00
Change End Date & Time: 19/03/2025 17:00:00
Outage Start Date & Time: 13/03/2025 12:00:00
Outage End Date & Time: 13/03/2025 15:00:00
Environment: Pre-Production
Participant Impact and Requirements: The Electricity Market Management System (EMMS) , Gas Supply Hub (GSH) and FPP Pre-Production environment will be unavailable during the outage window.

Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities .

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE NSW1 Region Wednesday, 12 March 2025

AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:

Unit: WTAHB1
Duration: 12/03/2025 17:30 to 12/03/2025 17:35
Amount: 16 MW
Constraint: NC-N_WTAHB1

Auto-generated on behalf of Manager NEM Real Time Operations

Change Number: CHG0101876

Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: MDM - Meter Data Management_PreProd
Change Title: Pre-Prod eMDM Hotfix Maintenance Release

Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - TAS region - 12/03/2025

Refer AEMO Electricity Market Notice 125564

The cause of this non credible contingency event is not known at this stage.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.

Region: TAS

Elements: Ulverstone - Emu Bay 110kV Line and the Ulverstone - Sheffield tee Paloona 110kV Line
Duration: 1500 hrs 12/03/2025 until further notice
Constraint set(s) invoked: Nil

Manager NEM Real Time Operations

Change Number: CHG0101704

Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: MSATS - Business to Business data exchange
Change Title: As part of the Platform Services Patching Program, webMethods Inactive Production Application Servers in Brisbane will have critical security patches applied.

Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - TAS region - 12/03/2025

Refer AEMO Electricity Market Notice 125556

The cause of this non credible contingency event is not known at this stage.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.

Region: TAS

Elements: Sheffield - Burnie No. 1 220kV Line, Sheffield - Burnie No. 2 110kV Line and the Ulverstone - Emu Bay 110kV Line
Duration: 1400 hrs 12/03/2025 until further notice
Constraint set(s) invoked: Nil

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - TAS region - 12/03/2025

At 1303 hrs the Ulverstone - Emu Bay 110kV Line and the Ulverstone - Sheffield tee Paloona 110kV Line tripped and auto reclosed.

AEMO did not instruct load shedding.

Approximately 12MW of bulk electrical load was disconnected momentarily.

The cause of this non credible contingency event is not known at this stage.


Manager NEM Real Time Operations