Market Notices

Change Number: CHG0108534

Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: MSATS - Market Settlement & Transfer System
Change Title: MSATS 56.0 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 - QLD region - 19/02/2026

Refer AEMO Electricity Market Notice 133799

The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.

AEMO will cancel the reclassification of this event as a credible contingency event.

Manager NEM Real Time Operations

Change Number: CHG0108534

Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: MSATS - Market Settlement & Transfer System
Change Title: MSATS 56.0 Maintenance Release

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

Change Number: CHG0109382

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Gas Supply Hub GSH
Change Title: NOR Pre-Prod GSH will have scheduled maintenance works outage on 3/03/2026 from 1:00 PM to 5:00 PM (AEST)
Change Start Date & Time: 03/03/2026 13:00:00
Change End Date & Time: 03/03/2026 17:00:00
Outage Start Date & Time: 03/03/2026 13:00:00
Outage End Date & Time: 03/03/2026 17:00:00
Environment: Pre-Production
Participant Impact and Requirements: The service will be unavailable while the maintainence is going on, maintainence will be done per server basis so only one service will have outage at a single time

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: CHG0109280

Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: EMMS - Dispatch
Change Title: NEM Dispatch Engine (NEMDE) ? Scheduled Maintenance Activity

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

Change Number: CHG0109280

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: EMMS - Dispatch
Change Title: NEM Dispatch Engine (NEMDE) | Scheduled Maintenance Activity
Change Start Date & Time: 26/02/2026 08:00:00
Change End Date & Time: 26/02/2026 17:59:00
Outage Start Date & Time:
Outage End Date & Time:
Environment: Production
Participant Impact and Requirements: We will be conducting maintenance on the NEM Dispatch Engine (NEMDE) during the implementation window.
No outages or service disruptions are expected.

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: CHG0105738

Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: MDM - Meter Data Management
Change Title: eMDM Lifecycle Maintenance Release

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

Change Number: CHG0108534

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: MSATS - Market Settlement & Transfer System
Change Title: MSATS 56.0 Maintenance Release
Change Start Date & Time: 01/03/2026 10:00:00
Change End Date & Time: 01/03/2026 14:00:00
Outage Start Date & Time: 01/03/2026 10:00:00
Outage End Date & Time: 01/03/2026 14:00:00
Environment: Production
Participant Impact and Requirements: Users will not be able to access MSATS during the outage period.

Meter data processing and RM reports will not be available during the outage period.

User Rights Management (URM) will continue to operate, however the administration screens will not be accessible.

MSATS B2B/B2M Transactions and B2B MSATS Screens will be unavailable during this outage

NMI Discovery will not be available during the outage period.

Network Outage Scheduler (NOS) B2B Transactions submitted via FTP will not be processed during this outage period. The NOS application will still be available.

CDR and CDP will not be available during the outage period.

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: CHG0108351

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Declared Wholesale Gas Market
Change Title: Planned System Maintenance - Declared Wholesale Gas Market (DWGM)
Change Start Date & Time: 03/03/2026 08:00:00
Change End Date & Time: 04/03/2026 17:00:00
Outage Start Date & Time: 03/03/2026 18:30:00
Outage End Date & Time: 03/03/2026 20:30:00
Environment: Production
Participant Impact and Requirements: DWGM market system (Webexchanger and MIBB) outage due to planned maintenance.

The following impacts are expected during the maintenance activities:
- All access to the Declared Wholesale Gas Market Production Systems 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.