Market Notices

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE NSW1 Region Thursday, 10 April 2025

AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:

Unit: QBYNB1
Duration: 10/04/2025 15:25 to 10/04/2025 15:35
Amount: -9 MW
Constraint: NC-N_QBYNB1

Auto-generated on behalf of Manager NEM Real Time Operations

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 20:15:00
Outage End Date & Time: 15/04/2025 21:00:00
Environment: Production

Participant Impact and Requirements: EMMS Production Systems will be transferred to the alternative datacentre for maintenance activities.

During the window, delivery of FPP calculations through the participant data model 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: CHG0102484

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Local Area Network
Change Title: Planned Maintenance to Brisbane Marketnet Router
Change Start Date & Time: 10/04/2025 10:00:24
Change End Date & Time: 10/04/2025 16:00:24
Outage Start Date & Time:
Outage End Date & Time:
Environment: Production

Participant Impact and Requirements: The following impacts are expected to participant connectivity during this planned maintenance:

IPWAN Participants - No impact is expected, however if IPWAN connectivity is lost, please use your backup method for connecting to Marketnet/submitting bids.

Lan-2-Lan VPN Participants (IPSEC) - Nil

B2B VPN - Nil

SSL VPN Participants: Nil

GASHUB: Nil

Other Impacts will have been communicated in advance.

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

Refer to market notice 123956

AEMO, Transgrid and Electranet have reviewed the test results following the PEC Stage 1 testing on 31st January 2025. Hold points 4 and 5 can now be released.

The following limits will be released as of 1000hrs 11th April 2025:
- PEC-1 - 150 MW (both directions)
- Heywood + PEC1 - 750 MW from Vic to SA and 700 MW from SA to Vic
- The existing Heywood limits of 600 and 550 MW are not being changed.

With the release of these limits AEMO will be looking for testing opportunities for increases to Heywood as per the test plan: https://aemo.com.au/-/media/files/stakeholder_consultation/consultations/nem-consultations/2023/project-energyconnect-stage-1-and-hic-capacity-release/pec-stage-1-and-hic---final-test-program.pdf?la=en.

Ben Blake
AEMO Operations

AEMO ELECTRICITY MARKET NOTICE

Update - Inter-regional transfer limit variation - APD - Heywood - Mortlake 500 kV line - VIC region - 10/04/2025

Refer to Market Notice 126464.

The cause of the unplanned outage of APD - Heywood - Mortlake 500 kV line in the VIC region has been identified and resolved. The outage has been completed and the APD - Heywood - Mortlake 500 kV line returned to service at 0948 hrs 10/04/2025

Constraint set(s) revoked: V-HYMO

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - APD - Heywood - Mortlake 500 kV line - VIC region - 10/04/2025

At 0825 hrs 10/04/2025 there was an unplanned outage of the APD - Heywood - Mortlake 500 kV line.

The following constraint set(s) invoked at 0835 hrs 10/04/2025
V-HYMO

This constraint set(s) contains equations with the following interconnectors on the LHS.
V-SA,T-V-MNSP1,V-S-MNSP1,VIC1-NSW1,NSW1-QLD1

Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE NSW1 Region Wednesday, 9 April 2025

AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:

Unit: VP6
Duration: 09/04/2025 19:00 to 09/04/2025 19:05
Amount: -38 MW
Constraint: NC-N_VP6

Auto-generated on behalf of Manager NEM Real Time Operations

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.