Market Notices

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1310 hrs on 8 March 2025

ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 8 March 2025.

Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the VIC to SA directional interconnector.

The negative residue constraint set NRM_VIC1_SA1 commenced operating from 1310 hrs on 8 March 2025.

This constraint set contains an equation with the following interconnectors on the LHS:
V-S-MNSP1
V-SA

The RHS of the constraint equation may be adjusted to manage residues.


This is an AEMO autogenerated Market Notice.

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1300 hrs on 8 March 2025

CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 8 March 2025.

Refer to market notice: 125373

AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the VIC to SA directional interconnector.

The negative residue constraint NRM_VIC1_SA1 ceased operating at 1300 hrs on 8 March 2025.

This is an AEMO autogenerated Market Notice.

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1210 hrs on 8 March 2025

ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 8 March 2025.

Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the VIC to SA directional interconnector.

The negative residue constraint set NRM_VIC1_SA1 commenced operating from 1210 hrs on 8 March 2025.

This constraint set contains an equation with the following interconnectors on the LHS:
V-S-MNSP1
V-SA

The RHS of the constraint equation may be adjusted to manage residues.


This is an AEMO autogenerated Market Notice.

Change Number: CHG0101876

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

Service/ Component: MDM - Meter Data Management_PreProd
Change Title: Pre-Prod eMDM Hotfix Maintenance Release
Change Start Date & Time: 12/03/2025 13:00:00
Change End Date & Time: 12/03/2025 17:00:00
Outage Start Date & Time: 12/03/2025 13:00:00
Outage End Date & Time: 12/03/2025 17:00:00

Environment: Pre-Production
Participant Impact and Requirements: Users will not be able to access MSATS during the outage period.

Meter data processing and RM reports will not be available during the outage period.

User Rights Management (URM) will continue to operate, however the administration screens will not be accessible.

MSATS B2B/B2M Transactions and B2B MSATS Screens will be unavailable during this outage

AEMO ELECTRICITY MARKET NOTICE

Cancellation - Reclassification of a Non-Credible Contingency Event: Darling Downs Power Station in Queensland Region - 06/03/2025

Refer to MN 125332

AEMO no longer considers the simultaneous trip of all the generators at Darling Downs Power Station as a credible contingency event.

Accordingly, its classification has reverted to a non-credible contingency event.

Constraint set Q-DARLING_DOWNS_N-2 revoked from 1500 hrs 07/03/2025

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - NSW region - 07/03/2025

At 0612 hrs the following plant tripped.

Lismore132 - Mullumbimby 9U6 132kV Line
Lismore132 - Mullumbimby 9U7 132kV Line
Ewingsdale - Mullumbimby 9G5 132kV Line
No 1 and 2 cables of Directlink

AEMO did not instruct load shedding.

Approximately 7MW of bulk electrical load has been disconnected.

The cause of this non credible contingency event is not known at this stage.


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: QLD1

Lines: Collinsville - Stoney Creek 7306 132KV LINE and Collinsville - Newlands 7121 132KV LINE

Cancellation time: 06/03/2025 23:14

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 125333

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: QLD1

Lines: Collinsville North - Proserpine No.7125 132 kV and Collinsville North - Proserpine No.7126 132 kV

Cancellation time: 06/03/2025 23:14

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 125334

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: QLD1

Lines: Strathmore - Clare South No.7208 132 kV and Strathmore - Clare South tee King Creek No.7128 132 kV

Cancellation time: 06/03/2025 23:04

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 125342

Auto-generated on behalf of Manager NEM Real Time Operations