Market Notices

Change Number: CHG0102365

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: DWGM - Web Exchanger
Change Title: Planned System Maintenance in Production for Web Exchanger
Change Start Date & Time: 08/04/2025 18:30:00
Change End Date & Time: 08/04/2025 20:30:00
Outage Start Date & Time: 08/04/2025 18:30:00
Outage End Date & Time: 08/04/2025 19:00:00
Environment: Production
Participant Impact and Requirements: DWGM Web Exchanger system outage due to planned maintenance.


The following impacts are expected during the maintenance activities:
- All access to the DWGM Web Exchanger System will be unavailable.

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 .

Change Number: CHG0102364

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: DWGM - Web Exchanger
Change Title: Planned System Maintenance - DWGM Production Web Exchanger
Change Start Date & Time: 08/04/2025 18:30:00
Change End Date & Time: 08/04/2025 20:30:00
Outage Start Date & Time: 08/04/2025 18:30:00
Outage End Date & Time: 08/04/2025 19:00:00
Environment: Production
Participant Impact and Requirements: DWGM Web Exchanger system outage due to planned maintenance.


The following impacts are expected during the maintenance activities:
- All access to the DWGM Web Exchanger System will be unavailable.

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 .

Change Number: CHG0101896

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Electricity Market Management System_PreProd
Change Title: EMMS Pre-Production Systems will be transferred to the alternative datacentre for maintenance activities .
Change Start Date & Time: 01/04/2025 08:00:00
Change End Date & Time: 11/04/2025 17:00:00
Outage Start Date & Time: 03/04/2025 08:00:00
Outage End Date & Time: 03/04/2025 22:00:00
Environment: Pre-Production
Participant Impact and Requirements: EMMS Pre-Production Systems will be transferred to the alternative datacentre for maintenance activities. Maintenance activities will be conducted on the following dates:
1/04/2025
3/04/2025
8/04/2025

During the window,FPP calculations may be delayed at various points.

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 .

Change Number: CHG0101950

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Cisco IP Phone
Change Title: Telco Outage Notification - Telstra Brisbane Indial (07 3347 XXXX-XXXX)
Change Start Date & Time: 01/04/2025 01:00:00
Change End Date & Time: 01/04/2025 06:00:00
Outage Start Date & Time: 01/04/2025 01:00:00
Outage End Date & Time: 01/04/2025 06:00:00
Environment: Production
Participant Impact and Requirements: External/Market

Outage Duration:
1 x 15 minutes during the window

Impacts:
Reduced redundancy for Inbound and Outbound Calls (automatically rerouted via Sydney).

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 .

Change Number: CHG0102343

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Frequency Performance Payments Engine
Change Title: Frequency Performance Payments (FPP) Maintenance Release
Change Start Date & Time: 02/04/2025 09:00:00
Change End Date & Time: 02/04/2025 16:00:00
Outage Start Date & Time:
Outage End Date & Time:
Environment: Production
Participant Impact and Requirements: During the window, delivery of FPP calculation results may be delayed at various points

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 .

Change Number: CHG0093394

Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: STTM - Market Inputs - Manual
Change Title: Planned Outage for the Gas Short Term Trading Market Systems SWEXIE Pre-Production.

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

Change Number: CHG0101878

Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: MDM - Meter Data Management
Change Title: Production MSATS and eMDM Maintenance Activity

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

Change Number: CHG0101896

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Electricity Market Management System_PreProd
Change Title: EMMS Pre-Production Systems will be transferred to the alternative datacentre for maintenance activities .
Change Start Date & Time: 01/04/2025 08:00:00
Change End Date & Time: 11/04/2025 17:00:00
Outage Start Date & Time: 03/04/2025 08:00:00
Outage End Date & Time: 03/04/2025 22:00:00
Environment: Pre-Production
Participant Impact and Requirements: EMMS Pre-Production Systems will be transferred to the alternative datacentre for maintenance activities. Maintenance activities will be conducted on the following dates:
1/04/2025
3/04/2025
8/04/2025

During the window,FPP calculations may be delayed at various points.

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

AEMO has completed a review of a system normal voltage stability limit in north west Victoria as a result of commissioning of BESS at Koorangie. The revised limit manages pre-contingent flow on the Wemen to Koorangie 220 kV line to avoid voltage collapse at Koorangie, Kerang or Wemen on loss of the Crowlands to Bulgana to Horsham or Horsham to Murra Warra to Kiamal 220 kV line. The revised constraint equation includes the generators in south-west NSW and north-west Victoria on the left-hand side as well as Murraylink and V-SA. Full details on the limits advice are to be published shortly on the AEMO website: https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice

The revised limit will be implemented at 0900 hrs on Monday 31st March 2025, by updating V^^V_NIL_KGTS.

For full details on the factors this constraint equation has now been loaded into AEMO's pre-production systems.

For further details on this constraint equation please contact terry.liu@aemo.com.au

Terry Liu
AEMO Operations