Market Notices

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation -Sheffield - Georgetown No. 2 220 kV line - TAS region - 30/05/2024

At 2301 hrs 30/05/2024 there was an unplanned outage of Sheffield - Georgetown No. 2 220 kV line

The following constraint set(s) invoked at 2310 hrs 30/05/2024
T-GTSH

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

Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations

Change Number: CHG0090097
Notification issued to: Market Notice

Notification Type: Initial
Change Type: Normal
Service/ Component: Declared Wholesale Gas Market (DWGM)
Change Title: Maintenance activities to be performed on the Declared Wholesale Gas Market Systems Pre-Production.

Change Start Date & Time: 03/06/2024 08:00:00 AEST
Change End Date & Time: 03/06/2024 17:30:00 AEST
Outage Start Date & Time: 03/06/2024 08:00:00 AEST
Outage End Date & Time: 03/06/2024 12:30:00 AEST

Environment: Pre-Production
Participant Impact and Requirements: This is a regular procedure to allow routine maintenance. short service outages over the day for DWGM services, includiing MIBB and Web Exchanger.

Pre-Production Declared Wholesale Gas Market Systems (DWGM)

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.

Change Number: CHG0089701
Notification issued to: Market Notice

Notification Type: Completed
Change Type: Normal

Service/Component: Gas Supply Hub

Change Title: NOR Pre-Prod GSH will have scheduled maintenance works outage from 9.00am Thursday 30 May until 12pm (EST)

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

Change Number: CHG0089701
Notification issued to: Market Notice
Notification Type: Initial

Change Type: Normal
Service/ Component: Gas Supply Hub
Change Title: NOR Pre-Prod GSH will have scheduled maintenance works outage from 9.00am Thursday 30 May until 12pm (EST)

Change Start Date & Time: 30/05/2024 09:00:00 AEST
Change End Date & Time: 30/05/2024 12:00:00 AEST
Outage Start Date & Time: 30/05/2024 09:00:00 AEST
Outage End Date & Time: 30/05/2024 12:00:00 AEST

Environment: Pre-Production

Participant Impact and Requirements: Services may be unavailable while maintenance is in progress

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.

Change Number: CHG0089701
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Gas Supply Hub
Change Title: NOR Pre-Prod GSH will have scheduled maintenance works outage from 9.00am Thursday 30 May until 12pm (EST)
Change Start Date & Time: 30/05/2024 09:00:00 AEST
Change End Date & Time: 30/05/2024 12:00:00 AEST
Outage Start Date & Time: 30/05/2024 09:00:00 AEST
Outage End Date & Time: 30/05/2024 12:00:00 AEST
Environment: Pre-Production
Participant Impact and Requirements: Services may be unavailable while maintenance is in progress
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.

Direction - SA region 28/05/2024

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 1415 hrs on 28/05/2024.

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 116824

The synchronous generating units currently expected to be synchronised in SA from 0000 hrs 29/05/2024 will be inadequate to maintain a secure operating state in SA .

AEMO estimates that, in the absence of sufficient market response by 1400 hrs 28/05/2024, 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

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 0000 hrs 29/05/2024 will be inadequate to maintain a secure operating state in SA.
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

The MTPASA result published on 28 May 2024 identifies no Low Reserve Conditions.

Please note that MTPASA informs the market of potential reliability issues to allow the market to respond in the first instance, potentially avoiding the need for any AEMO intervention.

For further information, please refer to:
https://www.aemo.com.au/Electricity/National-Electricity-Market-NEM/Data/Market-Management-System-MMS/Projected-Assessment-of-System-Adequacy

This notice supersedes Market Notice 116791 published on 23 May 2024.

Background
As part of a broader process of implementing the reliability standard, AEMO runs the Medium Term Projected Assessment of System Adequacy (MTPASA) process weekly to forecast expected unserved energy levels over a two year period. If the expected annual unserved energy exceeds the maximum level specified by the Reliability Standard, a Low Reserve Condition is identified.

For more information about how AEMO implements the reliability standard, please view the Reliability Standard Implementation Guidelines (RSIG) available on AEMO's website at https://www.aemo.com.au/Electricity/National

Forecasting
AEMO


For more information about how AEMO implements the reliability standard, please view the Reliability Standard Implementation Guidelines (RSIG) available on AEMO's website at https://www.aemo.com.au/Electricity/National

Forecasting
AEMO