Market Notices

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: 1040 hrs 23/06/2021 until further notice
Constraint set(s) invoked: Nil

Manager NEM Real Time Operations

Change Number: CHG0064164

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: Gas Supply Hub

Change Title: Implement trading restriction between related entities for Trayport in the GSH system

Change Start Date & Time: 24/06/2021 19:00:00 AEST

Change End Date & Time: 24/06/2021 22:00:00 AEST

Outage Start Date & Time: 24/06/2021 19:00:00 AEST

Outage End Date & Time: 24/06/2021 22:00:00 AEST

Change Description:

Preproduction Gas Supply Hub system (Trayport interface) will experience brief outages during the outage window due to planned maintenance.

Environment: Production

Participant Impact and Requirements:

Brief outages during the outage window due to planned maintenance.

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

AEMO ELECTRICITY MARKET NOTICE

Update: Actual Lack Of Reserve Level 1 (LOR1) in the NSW region - 22/06/2021

Refer Market notice 87604

An Actual LOR1 condition has been declared under clause 4.8.4(b) of the National Electricity Rules for the NSW region from 1700 hrs.

The Actual LOR1 condition is now forecast to exist until 2000 hrs.

The capacity reserve requirement is 1400 MW

The minimum capacity reserve available is 935 MW

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation of Actual (LOR1) condition in the NSW region - 22/06/2021

The Actual LOR1 Condition in the NSW region advised in AEMO Electricity Market Notice No.87606 is cancelled at 1940 hrs 22/06/2021.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Actual Lack Of Reserve Level 1 (LOR1) in the NSW region - 22/06/2021

An Actual LOR1 condition has been declared under clause 4.8.4(b) of the National Electricity Rules for the NSW region from 1730 hrs.

The Actual LOR1 condition is forecast to exist until 1830 hrs.

The capacity reserve requirement is 1400 MW

The minimum capacity reserve available is 1361 MW

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Direction - SA region 22/06/2021

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 dispatch intervals during the event to be intervention dispatch intervals, commencing from the interval ending 1705 hrs on 22/06/2021.

Intervention pricing does not apply to this AEMO intervention event.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Possible intervention to manage power system security in South Australia (SA) Region

The synchronous generating units expected to be synchronised in SA from 2300 hrs 22/06/2021 to 1700 hrs 23/06/2021 in Pre-dispatch published at 1430 hrs 22/06/2021 are inadequate to maintain sufficient system strength in SA and hence a secure operating state.

AEMO currently estimates that, in the absence of sufficient market response by 1700 hrs 22/06/2021, 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

The Forecast LOR1 condition in the NSW region advised in AEMO Electricity Market Notice No. 87597 has been updated at 1145 hrs to the following:

From 1730 hrs 22/06/2021 to 1900 hrs 22/06/2021

The contingency forecast capacity reserve requirement is 1430 MW.

The minimum capacity reserve available is 1266 MW.

Manager NEM Real Time Operations

The MTPASA result published on 22 June 2021 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 market intervention or direction from AEMO.

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 87204 published on 15th June 2021.

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-Electricity-Market-NEM/Planning-and-forecasting/Reliability-Standard-Implementation-Guidelines

Forecasting
AEMO