Market Notices

AEMO ELECTRICITY MARKET NOTICE

Cancellation - Possible intervention to manage power system security in South Australia (SA) region 08/06/2026

Refer Market Notice 144209

AEMO no longer foresees a possible requirement for intervention to manage power system security in SA region. The advice of possible intervention is cancelled from 1330 hrs 08/06/2026.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Update - Foreseeable AEMO intervention in SA region

Refer AEMO Electricity Market Notice 144208

AEMO has identified a foreseeable circumstance that may require an AEMO intervention event in the SA region from 1300 hrs 08/06/2026.

The foreseeable circumstance requiring the need for intervention is Voltage.

AEMO estimates that, in the absence of sufficient market response by 1245 hrs 08/06/2026, AEMO may need to intervene by issuing a direction.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Foreseeable AEMO intervention under clause 4.8.5A (a) of the NER in SA region

AEMO has identified a foreseeable circumstance that may require an AEMO intervention event in the SA region from 1300 hrs 08/06/2026.

The foreseeable circumstance requiring the need for intervention is Voltage.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation: Direction issued to: Origin Energy Electricity Limited - QUARANTINE PS UNIT 5

Refer to Market Notice 144169

Direction is cancelled from: 2315 hrs 31/05/2026

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation - AEMO Intervention Event - SA region 31/05/2026

Refer to Market Notice 144170

The AEMO Intervention Event and all associated directions are cancelled from 2315 hrs on 31/05/2026.


Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Direction - SA region 31/05/2026

In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the SA region. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a1)(1).

The issue of the direction commences an AEMO intervention event. AEMO declares all trading intervals during the event to be intervention trading intervals, commencing from the interval ending 2150 hrs on 31/05/2026.

Intervention pricing does not apply to this AEMO intervention event.

AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided. A further market notice will be issued when all directions related to this requirement have been cancelled.


Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Direction - in SA region to Origin Energy Electricity Limited - QUARANTINE PS UNIT 5

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

Direction issued to: Origin Energy Electricity Limited - QUARANTINE PS UNIT 5 at 2145hrs 31/05/2026
Type of resource: generating unit
Required actions: Remain Synchronised and follow dispatch targets at 2200 hrs 31/05/2026
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: 2330 hrs 31/05/2026.

Origin Energy Electricity 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

Cancellation - AEMO Intervention Event - SA region 24/05/2026

Refer to Market Notice 144136

The AEMO Intervention Event and all associated directions are cancelled from 1220 hrs on 24/05/2026.


Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation: Direction issued to: AGL SA Generation Pty Limited - BARKER INLET PS

Refer to Market Notice 144135

Direction is cancelled from: 1220 hrs 24/05/2026

Manager NEM Real Time Operations