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134770MARKET SYSTEMS13/03/2026 11:49:15 AM
Completed - CHG0106918 - Maintenance Release Site Transfer
Change Number: CHG0106918
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: Federated RabbitMQ
Change Title: Maintenance Release Site Transfer
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: Federated RabbitMQ
Change Title: Maintenance Release Site Transfer
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
134755MARKET SYSTEMS12/03/2026 04:00:33 PM
Completed - CHG0109566 - MDM AKS 1.34 Maintenance Release
Change Number: CHG0109566
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: MDM - Meter Data Management_PreProd
Change Title: MDM AKS 1.34 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: MDM AKS 1.34 Maintenance Release
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
134733MARKET SYSTEMS11/03/2026 11:30:08 AM
Completed - CHG0108419 - Identity Service Site Transfer
Change Number: CHG0108419
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: Identity Service (IDS)
Change Title: Identity Service Site Transfer
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: Identity Service (IDS)
Change Title: Identity Service Site Transfer
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
134731MARKET SYSTEMS11/03/2026 09:58:33 AM
Completed - CHG0108407 - EMMS Production Systems will be transferred to the alternative datacentre for maintenance activities
Change Number: CHG0108407
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: Electricity Market Management System
Change Title: EMMS Production Systems will be transferred to the alternative datacentre for maintenance activities.
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: Electricity Market Management System
Change Title: EMMS Production Systems will be transferred to the alternative datacentre for maintenance activities.
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
134729MARKET SYSTEMS11/03/2026 07:47:13 AM
Initial - CHG0106918 - Maintenance Release Site Transfer
Notification Type: Initial
Change Type: Normal
Service/ Component: Federated RabbitMQ
Change Title: Maintenance Release Site Transfer
Change Start Date & Time: 11/03/2026 14:00:00
Change End Date & Time: 11/03/2026 17:00:00
Outage Start Date & Time:
Outage End Date & Time:
Environment: Production
Participant Impact and Requirements: Delivery of Frequency Performance Payments (FPP) calculation results via the participant data model may be periodically delayed during the change 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.
Change Type: Normal
Service/ Component: Federated RabbitMQ
Change Title: Maintenance Release Site Transfer
Change Start Date & Time: 11/03/2026 14:00:00
Change End Date & Time: 11/03/2026 17:00:00
Outage Start Date & Time:
Outage End Date & Time:
Environment: Production
Participant Impact and Requirements: Delivery of Frequency Performance Payments (FPP) calculation results via the participant data model may be periodically delayed during the change 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.
134672MARKET SYSTEMS09/03/2026 03:14:45 PM
Completed - CHG0109407 - Planned maintenance to Cisco ISE Servers
Change Number: CHG0109407
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: Local Area Network
Change Title: Planned maintenance to Cisco ISE Servers
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: Local Area Network
Change Title: Planned maintenance to Cisco ISE Servers
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
134671MARKET SYSTEMS09/03/2026 03:13:12 PM
Initial - CHG0109550 - Planned Production System Maintenance - Short Term Trading Market (STTM)
Change Number: CHG0109550
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Windows Server
Change Title: Planned Production System Maintenance - Short Term Trading Market (STTM)
Change Start Date & Time: 12/03/2026 18:30:00
Change End Date & Time: 12/03/2026 19:00:00
Outage Start Date & Time:
Outage End Date & Time:
Environment: Production
Participant Impact and Requirements: Planned Production System Maintenance - Short Term Trading Market (STTM)
The system will be unavailable for up to 15 minutes
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.
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Windows Server
Change Title: Planned Production System Maintenance - Short Term Trading Market (STTM)
Change Start Date & Time: 12/03/2026 18:30:00
Change End Date & Time: 12/03/2026 19:00:00
Outage Start Date & Time:
Outage End Date & Time:
Environment: Production
Participant Impact and Requirements: Planned Production System Maintenance - Short Term Trading Market (STTM)
The system will be unavailable for up to 15 minutes
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.
134573GENERAL NOTICE06/03/2026 07:35:39 AM
Fast Frequency Response Market - Local dispatch of Very Fast Contingency FCAS in QLD
AEMO ELECTRICITY MARKET NOTICE
Following a review of the operation of the Very Fast FCAS market, from 10th Mar 2026 AEMO will increase the cap on dispatch of Very Fast Contingency FCAS in the QLD region from 100 MW to 200 MW, during periods where islanding of the QLD region is considered credible.
No other changes to the dispatch of Very Fast FCAS or FCAS constraint equations will be made on this date.
For more information on the Fast Frequency Response (FFR) initiative, please visit:
https://www.aemo.com.au/initiatives/major-programs/fast-frequency-response
AEMO Operations
Following a review of the operation of the Very Fast FCAS market, from 10th Mar 2026 AEMO will increase the cap on dispatch of Very Fast Contingency FCAS in the QLD region from 100 MW to 200 MW, during periods where islanding of the QLD region is considered credible.
No other changes to the dispatch of Very Fast FCAS or FCAS constraint equations will be made on this date.
For more information on the Fast Frequency Response (FFR) initiative, please visit:
https://www.aemo.com.au/initiatives/major-programs/fast-frequency-response
AEMO Operations
134553MARKET SYSTEMS05/03/2026 01:11:35 PM
Initial - CHG0109413 - EMMS Pre-Production Maintenance Activities
Change Number: CHG0109413
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Electricity Market Management System_PreProd
Change Title: EMMS Pre-Production Maintenance Activities
Change Start Date & Time: 16/03/2026 08:00:00
Change End Date & Time: 10/04/2026 17:00:00
Outage Start Date & Time: 23/03/2026 08:00:00
Outage End Date & Time: 27/03/2026 17:00:00
Environment: Pre-Production
Participant Impact and Requirements: The Electricity Market Management System (EMMS) and Gas Supply Hub (GSH) 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.
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Electricity Market Management System_PreProd
Change Title: EMMS Pre-Production Maintenance Activities
Change Start Date & Time: 16/03/2026 08:00:00
Change End Date & Time: 10/04/2026 17:00:00
Outage Start Date & Time: 23/03/2026 08:00:00
Outage End Date & Time: 27/03/2026 17:00:00
Environment: Pre-Production
Participant Impact and Requirements: The Electricity Market Management System (EMMS) and Gas Supply Hub (GSH) 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.