Market Notices

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: TAS1

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

Cancellation time: 07/05/2025 14:34

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 126927

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: TAS1

Lines: Gordon - Chapel St No 1 220kV and Gordon - Chapel St No 2 220kV

Cancellation time: 07/05/2025 13:44

Constraint set(s) revoked:
F-T-CSGO Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
T-CSGO_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE


Refer AEMO Electricity Market Notice 126926

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: TAS1

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

Duration: 07/05/2025 12:41 until further notice

Constraint set(s) invoked:
F-T-FARE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
T-GH_RC12_250 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

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: 07/05/2025 12:30 until further notice

Constraint set(s) invoked:
NONE

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: TAS1

Lines: Gordon - Chapel St No 1 220kV and Gordon - Chapel St No 2 220kV

Duration: 07/05/2025 11:43 until further notice

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

Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN

Refer to Market Notice 126906

Direction is cancelled from: 1200 hrs 07/05/2025

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Direction - SA region to AGL SA Generation Pty Limited - TORRB4 TORRENS ISLAN

Refer to Market Notice 126848


In accordance with section 116 of the National Electricity Law, AEMO is issuing a direction to AGL SA Generation Pty Limited. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a1)(1).

Direction issued to: AGL SA Generation Pty Limited - TORRB4 TORRENS ISLAN at 1600 hrs 06/05/2025
Type of resource: generating unit
Required actions: To synchronise and follow dispatch targets at 1200 hrs 07/05/2025
Services provided: Voltage Control
Circumstances necessitating the Direction: Voltage
Circumstances necessitating the Direction additional detail: The synchronous generating units currently expected to be synchronised in SA will be inadequate to maintain sufficient Voltage Control in SA. Intervention is required to maintain the power system in a secure operating state
Expected duration: 0400 hrs 08/05/2025.

AGL SA Generation Pty Limited does not incur any civil monetary liability for a relevant action taken in accordance with this direction unless the action is taken in bad faith.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Update Direction - AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN

Refer to Market Notice 126905

TORRB2 TORRENS ISLAN at 2300 hrs 02/05/2025 to Remain synchronised and follow dispatch targets.

The TORRB2 TORRENS ISLAN direction is now expected to stay in place until 1200 hrs 07/05/2025.

The direction update is issued at 1600 hrs 06/05/2025.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Update Direction - AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN

Refer to Market Notice 126873

TORRB2 TORRENS ISLAN at 2300 hrs 02/05/2025 to Remain synchronised and follow dispatch targets.

The TORRB2 TORRENS ISLAN direction is now expected to stay in place until 0400 hrs 08/05/2025.

The direction update is issued at 1530 hrs 06/05/2025.

Manager NEM Real Time Operations