Market Notices

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 2000 hrs on 1 June 2026

CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 1 June 2026.

Refer to market notice: 144181

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

The negative residue constraint NRM_VIC1_NSW1 ceased operating at 2000 hrs on 1 June 2026.

This is an AEMO autogenerated Market Notice.

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1820 hrs on 1 June 2026

ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 1 June 2026.

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

The negative residue constraint set NRM_VIC1_NSW1 commenced operating from 1820 hrs on 1 June 2026.

This constraint set contains an equation with the following interconnectors on the LHS:
VIC1-NSW1

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


This is an AEMO autogenerated Market Notice.

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - QLD region - 29/05/2026

Refer AEMO Electricity Market Notice 144162

At 2135 hrs the Woolooga to Teebar Creek 8850 275kV Line and the Teebar Ck No2 275kV Bus was returned to service.

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.

Non-credible contingency event - QLD region - 29/05/2026

At 1013 hrs the Woolooga to Teebar Creek 8850 275kV Line and the Teebar Ck No2 275kV Bus tripped.

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 is not known at this stage.


Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - NSW region - 17/05/2026

Refer AEMO Electricity Market Notice 144112

At 1327 hrs the Upper Tumut Units 1, 2, 3 and 4 were made available to return to service.

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.

Non-credible contingency event - NSW region - 17/05/2026

At 2317 hrs the Upper Tumut Units 1, 2, 3 and 4 tripped.

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 is not known at this stage.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

The Forecast LOR2 condition in the QLD region advised in AEMO Electricity Market Notice No. 144106 is cancelled at 1400 hrs 17/05/2026.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

AEMO declares a Forecast LOR2 condition under clause 4.8.4(b) of the National Electricity Rules for the QLD region for the following Period:


[1.] From 1700 hrs 18/05/2026 to 1900 hrs 18/05/2026.
The forecast capacity reserve requirement is 759 MW.
The minimum capacity reserve available is 357 MW.


AEMO is seeking a market response.

AEMO has not yet estimated the latest time at which it would need to intervene through an AEMO intervention event.


Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

The Forecast LOR2 condition in the QLD region advised in AEMO Electricity Market Notice No. 144093 is cancelled at 1030 hrs 17/05/2026.

Manager NEM Real Time Operations