Market Notices

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Bulgana-Horsham 220kV LINE - VIC region - 19/07/2025

A planned outage of Bulgana-Horsham 220kV LINE in the VIC region was scheduled from 0700 hrs 19/07/2025 to 1730 hrs 19/07/2025.

The outage has been completed and Bulgana-Horsham 220kV LINE returned to service at 1525 hrs 19/07/2025

Constraint set(s) revoked: V-BUHO

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - TAS region - 19/07/2025

At 1240 hrs the Liapoota - Wadamana - Palmerston 220 kV line and the Cattle Hill Wind Farm - Wadamana 220 kV line tripped.

AEMO did not instruct load shedding.

AEMO has been advised of a 70 MW load reduction at Nyrstar.

The cause of this non credible contingency event is not known at this stage.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - S3 Greenbank 275 kV SVC - QLD region - 18/07/2025

At 1207 hrs 18/07/2025 there was an unplanned outage of S3 Greenbank 275 kV SVC.

The following constraint set(s) invoked at 1215 hrs 18/07/2025
Q-GB_VC

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

Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - QLD region - 18/07/2025

At 0825 hrs the H11_Nebo 275/132 kV No.1 Transformer was switched out on a planned outage and the H11_Nebo 275 kV SVC tripped.

AEMO did not instruct load shedding.

AEMO has not been advised of any disconnection of bulk electrical load.

The cause of this non credible contingency event is not known at this stage.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Calvale-Halys 8810 275kV LINE - QLD region - 17/07/2025

A planned outage of Calvale-Halys 8810 275kV LINE in the QLD region was scheduled from 2300 hrs 15/07/2025 to 1600 hrs 18/07/2025.

The outage has been completed and Calvale-Halys 8810 275kV LINE returned to service at 1500 hrs 17/07/2025

Constraint set(s) revoked: Q-HACL

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Heywood M1 Transformer- VIC region - 16/07/2025

A planned outage of Heywood M1 Transformer in the VIC region was scheduled from 0700 hrs 16/07/2025 to 1800 hrs 16/07/2025.

The outage has been completed and Heywood M1 Transformer returned to service at 1335 hrs 16/07/2025

Constraint set(s) revoked: V-HYTX_M12

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-Regional Transfer limit variation - Directlink - NSW Region

There has been an unplanned outage of the No 3 Leg of Directlink .

The following constraint set was invoked at 2255 hrs 12/07/2025

N-X_MBTE_3

The constraint set contains the following interconnector on the left hand side.

N-Q-MNSP1

Refer AEMO Network Outage Scheduler (NOS) for further details.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Braemar (R2) No.1 330/275 kV Transformer - QLD region - 12/07/2025

At 2145 hrs 12/07/2025 there was an unplanned outage of Braemar (R2) No.1 330/275 kV Transformer.

The following constraint set(s) invoked at 2145 hrs 12/07/2025
Q-BRTX1

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

Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-Regional Transfer limit variation - Directlink - NSW Region

There has been an unplanned outage of the No 2 Leg of Directlink .

The following constraint set was invoked at 1350 hrs 12/07/2025

N-X_MBTE_2

The constraint set contains the following interconnector on the left hand side.

N-Q-MNSP1

Refer AEMO Network Outage Scheduler (NOS) for further details.

Manager NEM Real Time Operations