Market Notices

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - QLD region - 12/03/2024

Refer AEMO Electricity Market Notice 115596

Based on advice from the asset owner, AEMO no longer considers the trip of Strathmore - Clare South No 7208 132 kV Line CB 72082 at Strathmore as a credible contingency event.

Therefore AEMO cancels the reclassification as a credible contingency event.

Region: QLD

Elements: Strathmore - Clare South No 7208 132 kV Line CB 72082 at Strathmore
Cancellation time : 1130 hrs 19/03/2024
Constraint set(s) invoked: Nil

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: NSW1

Lines: Armidale - Dumaresq 8C 330kV and Armidale - Sapphire WF 8E 330kV

Cancellation time: 18/03/2024 15:29

Constraint set(s) revoked:
N-ARDM_ARSR_1PH_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1


Refer AEMO Electricity Market Notice 115683

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Direction - SA region 18/03/2024

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 1605 hrs on 18/03/2024.

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 115677

The synchronous generating units currently expected to be synchronised in SA from 0030 hrs 19/03/2024 will be inadequate to maintain a secure operating state in SA .

AEMO estimates that, in the absence of sufficient market response by 1600 hrs 18/03/2024, 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: CHG0085822
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: MSATS - Consumer Administration and Transfer Solution(CATS)
Change Title: Pre-Prod MSATS Lifecycle Maintenance
Change Start Date & Time: 19/03/2024 12:00:00 AEST
Change End Date & Time: 19/03/2024 21:00:00 AEST
Outage Start Date & Time: 19/03/2024 12:30:00 AEST
Outage End Date & Time: 19/03/2024 20:00:00 AEST
Environment: Pre-Production
Participant Impact and Requirements: There will be login outages impacting MSATS, OPDMS, NOS, and EMMS Pre-Production web portals. Users are advised to log in before the outage begins and stay logged in. Note that during the MSATS outage, you won't be able to log back in until it's over.
URM outage will occur from 18:00:00 - 18:30:00 AEST, lasting up to 30 minutes. New login sessions into TMM, OPDMS, NOS, or EMMS WebPortal won't be possible during this time, but users already logged in won't be affected.
During the MSATS outage from 12:30:00 - 20:00:00 AEST:
MSATS services like Meter data processing, RM reports, B2B, B2M screen, NMI Discovery, CDR, CDP will be unavailable.
Participant passwords will be retained.
Users logging out or trying to log in during the URM outage can only log in after it's over. Password resets or new account creations during this time will need to be redone.
Plain English constraints won't be available via the EMMS web portal during the URM outage. The redirection menu won't be accessible during the MSATS outage via https://menu.preprod.nemnet.net.au.

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: CHG0087184
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal

Service/ Component: Short Term Trading Market
Change Title: Maintenance activities to be performed on the Gas Short Term Trading Market Systems Pre-Production.
Change Start Date & Time: 21/03/2024 10:00:00 AEST
Change End Date & Time: 21/03/2024 17:00:00 AEST
Outage Start Date & Time: 21/03/2024 10:00:00 AEST
Outage End Date & Time: 21/03/2024 12:00:00 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 .

The MTPASA result published on 19 March 2024 identifies Low Reserve Conditions as annual unserved energy exceeds the Reliability Standard between:
-- March 2025 - March 2026 in New South Wales.

AEMO declares low reserve conditions in accordance with clause 4.8.4 of the National Electricity Rules for the following region(s) and periods:
-- August 2025 - March 2026 in New South Wales

when forecast demand exceeds supply under some circumstances.

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 115590 published on 12 March 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

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: NSW1

Lines: Armidale - Dumaresq 8C 330kV and Armidale - Sapphire WF 8E 330kV

Duration: 18/03/2024 09:27 until further notice

Constraint set(s) invoked:
N-ARDM_ARSR_1PH_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1


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: NSW1

Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV

Cancellation time: 18/03/2024 00:39

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 115680

Auto-generated on behalf of Manager NEM Real Time Operations