Market Notices

Change Number: CHG0103089

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: EMMS - Dispatch
Change Title: ERI & STPASA Recall Period Production Release
Change Start Date & Time: 30/06/2025 09:00:00
Change End Date & Time: 04/07/2025 18:00:00
Outage Start Date & Time: 30/06/2025 11:45:00
Outage End Date & Time: 30/06/2025 11:55:00
Environment: Production
Participant Impact and Requirements: Under this change, AEMO will upgrade the NEMDE solver used in Production for Dispatch, 5-Minute Predispatch, Predispatch and PD7 to a new version. AEMO will also upgrade other relevant applications for Dispatch, 5-Minute Predispatch, Predispatch, PD7, Bidding, SOMMS and?Registration. This change will become effective upon rule commencement on 1 July, 2025

Impact : A Planned outage for BIDDING application is scheduled on 30th June 2025 between 11:45 AM and 11:55 AM. The application will be unavailable for approximately 5-7 min during this 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.

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE SA1 Region Thursday, 26 June 2025

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

Unit: ADPBA1
Duration: 26/06/2025 07:40 to 26/06/2025 10:00
Amount: -6 MW
Constraint: NC-S_ADPBA1

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE VIC1 Region Wednesday, 25 June 2025

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

Unit: MRTLSWF1
Duration: 25/06/2025 16:05 to 25/06/2025 17:05
Amount: -67 MW
Constraint: NC-V_MRTLSWF1

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.

Region: VIC1

Lines: Yallourn - Rowville 7 220 kV and Yallourn - Rowville 8 220 kV

Cancellation time: 25/06/2025 16:34

Constraint set(s) revoked:
V-ROYP78_R_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE


Refer AEMO Electricity Market Notice 127855

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE QLD1 Region Wednesday, 25 June 2025

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

Unit: TARONG#4
Duration: 25/06/2025 15:35 to 25/06/2025 15:45
Amount: -50 MW
Constraint: NC-Q_TARONG#4

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.

Region: VIC1

Lines: Yallourn - Rowville 7 220 kV and Yallourn - Rowville 8 220 kV

Duration: 25/06/2025 15:29 until further notice

Constraint set(s) invoked:
V-ROYP78_R_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE


Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE VIC1 Region Wednesday, 25 June 2025

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

Unit: LVES1
Duration: 25/06/2025 14:25 to 25/06/2025 14:45
Amount: 63 MW
Constraint: NC-V_LVES1

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE QLD1 Region Wednesday, 25 June 2025

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

Unit: ULPBESS1
Duration: 25/06/2025 14:25 to 25/06/2025 14:40
Amount: 6 MW
Constraint: NC-Q_ULPBESS1

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation - AEMO Intervention Event - SA region 21/06/2025

Refer to Market Notice 127682

The AEMO Intervention Event and all associated directions are cancelled from 1400 hrs on 25/06/2025.


Manager NEM Real Time Operations