Market Notices

127503INTER-REGIONAL TRANSFER11/06/2025 06:24:21 PM

Cancellation- Inter-regional transfer limit variation - constraint automation to manage Power System Security in NSW region - 11/06/2025

AEMO ELECTRICITY MARKET NOTICE

Cancellation- Inter-regional transfer limit variation - constraint automation to manage Power System Security in NSW region - 11/06/2025

Refer AEMO Electricity Market Notice 127501

In order to maintain the power system in a secure operating state in the NSW region, AEMO invoked automated constraint set CA_SYDS_575BC182 from 1755 hrs until 1810 hrs.

This constraint set contains equations with the following interconnector on the LHS;

N-Q-MNSP1


Manager NEM Real Time Operations
     
127501INTER-REGIONAL TRANSFER11/06/2025 06:01:39 PM

Inter-regional transfer limit variation - constraint automation to manage Power System Security in NSW region - 11/06/2025

AEMO ELECTRICITY MARKET NOTICE

In order to maintain the power system in a secure operating state in the NSW region, AEMO has invoked automated constraint set CA_SYDS_575BC182 from 1755 hrs until further notice.

This constraint set contains equations with the following interconnector on the LHS;

N-Q-MNSP1


Manager NEM Real Time Operations
     
127496INTER-REGIONAL TRANSFER11/06/2025 04:25:53 PM

Inter-regional transfer limit variation - Collector - Yass (3L) 330kV line - NSW region - 11/06/2025

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Collector - Yass (3L) 330kV line - NSW region - 11/06/2025

A planned outage of Collector - Yass (3L) 330kV line in the NSW region was scheduled from 0700 hrs 10/06/2025 to 1500 hrs 16/06/2025.

The outage has been completed and Collector - Yass (3L) 330kV line returned to service at 1611 hrs 11/06/2025

Constraint set(s) revoked: N-CTYS_3L_WG_CLOSE

Manager NEM Real Time Operations
     
127492INTER-REGIONAL TRANSFER10/06/2025 10:35:15 AM

Inter-regional transfer limit variation - Middle Ridge - Greenbank (8848) 275 kV LINE- QLD region - 10/06/2025

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Middle Ridge - Greenbank (8848) 275 kV LINE - QLD region - 10/06/2025

At 1000 hrs 10/06/2025 there was a short notice outage of Middle Ridge - Greenbank (8848) 275 kV LINE.

The following constraint set(s) invoked at 1030 hrs 10/06/2025
Q-MRGB_8848_8849

This constraint set(s) contains equations with the following interconnectors on the LHS.
N-Q-MNSP1,NSW1-QLD1

Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations
     
127484MARKET SYSTEMS09/06/2025 01:25:11 AM

INC0145687 - RESOLVED - Frequency Performance Payments (FPP) System

INC0145687 - RESOLVED - Frequency Performance Payments (FPP) System

AEMO ELECTRICITY MARKET NOTICE

SERVICE INTERRUPTION - RESOLVED

The service interruption relating to Frequency Performance Payments (FPP) System has been resolved.

The FPP System started normal operations from 00:25 Hrs AEST on 09/06/2025

Default Contribution Factors (DCFs) will be used for Regulation Frequency Control Ancillary Service (FCAS) recovery for the trading intervals where CFs were not calculated. No FPP amount will be paid or due for those Trading Intervals.

For further enquiries please contact the AEMO Support Hub
Phone: 1300 236 600
Email: supporthub@aemo.com.au

AEMO IT Duty Manager
     
127483MARKET SYSTEMS09/06/2025 12:02:59 AM

INC0145687 - ALERT - Frequency Performance Payments (FPP) Syste

INC0145687 - ALERT - Frequency Performance Payments (FPP) System

AEMO ELECTRICITY MARKET NOTICE

SERVICE INTERRUPTION - ALERT

AEMO is experiencing a service interruption relating to Frequency Performance Payments (FPP) System.

The service interruption started from 20:25 hrs AEST on 08/06/2025. The participants will experience a delay in receiving FPP factors.

AEMO is working on resolving the issue and will provide updates as more information becomes available.

For further enquiries please contact the AEMO Support Hub
Phone: 1300 236 600
Email: supporthub@aemo.com.au


































     
127473RECLASSIFY CONTINGENCY07/06/2025 11:47:43 PM

Cancellation of the reclassification of a Non-Credible Contingency Event: Para-Templers West and Magill-Torrens Island A 275kV lines in SA due to severe weather warning.

AEMO ELECTRICITY MARKET NOTICE.

Cancellation of the reclassification of a non-credible contingency event as a credible contingency event due to severe weather warning.
AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any severe weather warning in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.

Region: SA
Lines: Para-Templers West and Magill-Torrens Island A 275kV lines
Cancellation time: 2345 hrs 7/06/2025
Constraint set(s) revoked: Nil
Refer AEMO Electricity Market Notice 127419

Manager NEM Real Time Operations
     
127472RECLASSIFY CONTINGENCY07/06/2025 11:47:22 PM

Cancellation of the reclassification of a Non-Credible Contingency Event: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines in SA due to severe weather warning .

AEMO ELECTRICITY MARKET NOTICE.

Cancellation of the reclassification of a non-credible contingency event as a credible contingency event due to severe weather warning.
AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any severe weather warning in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.

Region: SA
Lines: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines
Cancellation time: 2345 hrs 7/06/2025
Constraint set(s) revoked: Nil
Refer AEMO Electricity Market Notice 127418

Manager NEM Real Time Operations
     
127471RECLASSIFY CONTINGENCY07/06/2025 11:47:12 PM

Cancellation: Reclassification of non-credible contingency event due to existence of widespread abnormal conditions - SA region.

AEMO ELECTRICITY MARKET NOTICE.

AEMO considers the occurrence of a non-credible contingency event due to the widespread abnormal conditions advised in AEMO Electricity Market Notice 127450 is no longer reasonably possible and accordingly its classification has reverted to non-credible.

Cancellation time: 2345 hrs 7/06/2025

Constraint set(s) revoked:
I-VS_250

Manager NEM Real Time Operations
     
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