Initial - CHG0109281 - Planned System Maintenance - Declared Wholesale Gas Market (DWGM) Production

Change Number: CHG0109281

Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Declared Wholesale Gas Market
Change Title: Planned System Maintenance - Declared Wholesale Gas Market (DWGM) Production

Change Start Date & Time: 05/05/2026 08:00:00
Change End Date & Time: 06/05/2026 18:00:00
Outage Start Date & Time: 05/05/2026 22:20:00
Outage End Date & Time: 06/05/2026 04:00:00
Environment: Production

Participant Impact and Requirements: Dear User,
Please be aware of a DWGM market system outage due to a planned server migration in the Production environment.
 
The following impacts are expected during the maintenance activities:
 
DWGM interfaces Web Exchanger, Web Services, DWGM CC Auction and Prudential Dashboard, will either be unavailable or have intermittent availability during the outage window.

Participants should not assume that any submissions made during the outage window will be successful or retained. If submissions are attempted and successful, participants should review them or resubmit after AEMO notifies that maintenance has ended. This only applies to submissions attempted during the maintenance, any submissions prior to the outage start time will not be impacted.
MIBB will be available to retrieve reports generated prior to the outage.

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.