Market Notices

Change Number: CHG0102439

Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: Gas Supply Hub
Change Title: NOR Pre-Prod GSH will have scheduled maintenance works outage from 9.00am Mondday 7 April until 12pm (EST)


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

Change Number: CHG0102487

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: 10/04/2025 08:00:00
Change End Date & Time: 10/04/2025 16:00:00
Outage Start Date & Time:
Outage End Date & Time:
Environment: Production

Participant Impact and Requirements: Delivery of FPP calculation results may be delayed at times during the maintenance 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 Number: CHG0100085

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Electricity Market Management System
Change Title: EMMS Production Systems will be transferred to the alternative datacentre for maintenance activities .
Change Start Date & Time: 14/04/2025 08:00:00
Change End Date & Time: 16/04/2025 19:00:00
Outage Start Date & Time: 15/04/2025 13:15:00
Outage End Date & Time: 15/04/2025 14:00:00
Environment: Production

Participant Impact and Requirements: 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 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: CHG0100211


Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Identity Service (IDS)
Change Title: Identity Service Site Transfer
Change Start Date & Time: 15/04/2025 10:00:00
Change End Date & Time: 15/04/2025 18:00:00
Outage Start Date & Time: 15/04/2025 13:05:00
Outage End Date & Time: 15/04/2025 13:15:00
Environment: Production

Participant Impact and Requirements: Identity Service is used by multiple systems for user authorisation and authentication.

Identity Service is mostly used by the following systems:
*MSATS
*APIs (EMMS, GBB, MSATS)
*WEM
*Internal / Markets Portal Services
Identity Service may cause users to experience few session issues for few logins initated between 13:05 to 13:15 Market Time.
Internal / Market Portal Services will have an outage due to EMMS site transfer activities carried out along with this change.

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

Issued by Australian Energy Market Operator Ltd at 2000 hrs on 7 April 2025

CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 7 April 2025.

Refer to market notice: 126420

AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the NSW to VIC directional interconnector.

The negative residue constraint NRM_NSW1_VIC1 ceased operating at 2000 hrs on 7 April 2025.

This is an AEMO autogenerated Market Notice.

AEMO ELECTRICITY MARKET NOTICE

Cancellation - Foreseeable AEMO intervention under clause 4.8.5A (a) of the NER in SA region

The foreseeable circumstance identified in Market Notice 126418 is cancelled.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1700 hrs on 7 April 2025

ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 7 April 2025.

Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the NSW to VIC directional interconnector.

The negative residue constraint set NRM_NSW1_VIC1 commenced operating from 1700 hrs on 7 April 2025.

This constraint set contains an equation with the following interconnectors on the LHS:
VIC1-NSW1

The RHS of the constraint equation may be adjusted to manage residues.


This is an AEMO autogenerated Market Notice.

AEMO ELECTRICITY MARKET NOTICE

Foreseeable AEMO intervention under clause 4.8.5A (a) of the NER in SA region

AEMO has identified a foreseeable circumstance that may require an AEMO intervention event in the SA region from 0900 hrs 08/04/2025.

The foreseeable circumstance requiring the need for intervention is Voltage.

Manager NEM Real Time Operations

Change Number: CHG0102537

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Windows Server
Change Title: NOR Pre-Prod GFRC will have scheduled maintenance works outage from 9.00am Wednesday 9 April until 12pm (EST)
Change Start Date & Time: 09/04/2025 09:00:00
Change End Date & Time: 09/04/2025 12:00:00
Outage Start Date & Time: 09/04/2025 09:00:00
Outage End Date & Time: 09/04/2025 12:00:00
Environment: Pre-Production
Participant Impact and Requirements: Services may be unavailable while maintenance is in progress

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 .