Market Notices

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: TAS1

Lines: Farrell-John Butters and Farrell-Rosebery-Newton-Queenstown

Duration: 12/03/2025 08:02 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Waterloo - Hummocks 132kV Line - SA region - 12/03/2025

At 0641 hrs 12/03/2025 there was an unplanned outage of Waterloo - Hummocks 132kV Line.

The following constraint set(s) invoked at 0650 hrs 12/03/2025
S-HUWT

This constraint set(s) contains equations with the following interconnectors on the LHS.
V-S-MNSP1

Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Cancellation of the 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: TAS

Lines: Farrell - Reece No. 1 and No. 2 220kV lines

Cancellation time: 12/03/2025 06:10
Constraint set(s) revoked: T-GH_RC12_250
F-T-FARE_N-2

Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1

Refer AEMO Electricity Market Notice 125541

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: TAS

Lines: Farrell - Reece No. 1 and No. 2 220kV lines

Duration: 12/03/2025 04:30 until further notice
Constraint set(s) invoked: F-T-FARE_N-2
T-GH_RC12_250

Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1

Manager NEM Real Time Operations

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: 2115 hrs 11/03/2025
Constraint set(s) revoked: Nil
Refer AEMO Electricity Market Notice 125537

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.


Cancellation 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: SA

Lines: Penola West - South East 132 kV line and the Kincraig - Penola West 132 kV line

Cancellation time: 11/03/2025 20:25

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 125528

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: NSW1

Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV

Cancellation time: 11/03/2025 18:23

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 125534

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 severe weather warning.
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: SA
Lines: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines
Duration: 1810 hrs 11/03/2025 until further notice
Constraint set(s) invoked: Nil

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - NSW region - 07/03/2025

Refer AEMO Electricity Market Notice 125355

AEMO is not satisfied that this non credible event is unlikely to re-occur.

AEMO has therefore reclassified this event as a credible contingency event until further notice.

Region: NSW

Elements:
- Lismore132 - Mullumbimby 9U6 132kV Line
- Lismore132 - Mullumbimby 9U7 132kV Line
- Ewingsdale - Mullumbimby 9G5 132kV Line

Duration: 1730 hrs 11/03/2025 until further notice

Constraint set(s) invoked: NONE

Manager NEM Real Time Operations