Market Notices

AEMO ELECTRICITY MARKET NOTICE

Update - Possible intervention to manage power system security in SA region

Refer AEMO Electricity Market Notice 117126

The synchronous generating units currently expected to be synchronised in SA from 2300 hrs 25/06/2024 will be inadequate to maintain a secure operating state in SA .

AEMO estimates that, in the absence of sufficient market response by 1700 hrs 25/06/2024, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.

Manager NEM Real Time Operations

Change Number: CHG0090919

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: Short Term Trading Market (STTM)

Change Title: Maintenance activities to be performed on the Gas Short Term Trading Market Systems Pre-Production.

Change Start Date & Time: 27/06/2024 08:00:00 AEST

Change End Date & Time: 27/06/2024 17:30:00 AEST

Outage Start Date & Time: 27/06/2024 09:00:00 AEST

Outage End Date & Time: 27/06/2024 13:30:00 AEST

Environment: Pre-Production

Participant Impact and Requirements:

This is a regular procedure to allow routine maintenance. Short service outages over the day for STTM services including SWEX and MIS.

Pre-Production Gas Short Term Trading Market (STTM)

Support Information:

Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any
planned/unplanned maintenance activities .

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - NSW region - 25/06/2024

At 0901 hrs the Sydney West No.1 330 kV SVC tripped during switching for planned outage of Sydney West No.4 330/132 kV transformer.

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 has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.

AEMO will not reclassify this event as a credible contingency event.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Possible intervention to manage power system security in SA Region

The synchronous generating units currently expected to be synchronised in SA from 2300 hrs 25/06/2024 will be inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.

Manager NEM Real Time Operations

Change Number: CHG0090646

Notification issued to: Market Notice

Notification Type: Completed

Change Type: Normal

Service/Component: Market Network

Change Title: Planned maintenance affecting the AEMO Market Network.

Support Information:
Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.

AEMO ELECTRICITY MARKET NOTICE

Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 23/06/2024

Refer Market Notice 117109

The AEMO Intervention Event and all associated directions are cancelled from 1455 hrs 24/06/2024

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Direction - SA region 24/06/2024

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(a).

The direction was necessary to maintain the power system in a secure operating state.

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.

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 1505 hrs on 24/06/2024.

Intervention pricing does not apply to this AEMO intervention event.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Update - Possible intervention to manage power system security in SA region

Refer AEMO Electricity Market Notice 117114

The synchronous generating units currently expected to be synchronised in SA from 0000 hrs 25/06/2024 will be inadequate to maintain a secure operating state in SA .

AEMO estimates that, in the absence of sufficient market response by 1500 hrs 24/06/2024, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.

Manager NEM Real Time Operations

Change Number: CHG0090585

Notification issued to: Market Notice

Notification Type: Completed

Change Type: Normal

Service/Component: EMMS - Dispatch

Change Title: Dispatch Applications Upgrade

Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.