Market Notices

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Heywood M1 500/275kV XFMR - VIC region - 29/05/2026

A planned outage of Heywood M1 500/275kV XFMR in the VIC region was scheduled from 1100 hrs 25/05/2026 to 1800 hrs 29/05/2026.

The outage has been completed and Heywood M1 500/275kV XFMR returned to service at 0920 hrs 29/05/2026

Constraint set(s) revoked: V-HYTX_M12

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Koorangie to Wemen 220 kV Line - VIC region - 25/05/2026

At 1130 hrs 25/05/2026 there was a short notice outage of Koorangie to Wemen 220 kV Line.

The following constraint set(s) invoked at 1130 hrs 25/05/2026
V-KOWE

This constraint set(s) contains equations with the following interconnectors on the LHS.
V-S-MNSP1,T-V-MNSP1,V-SA,VIC1-NSW1

Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Tailem Bend 275 kV East Bus - SA region - 24/05/2026

At 1250 hrs 24/05/2026 there was a short notice outage of Tailem Bend 275 kV East Bus.

The following constraint set(s) invoked at 1250 hrs 24/05/2026
S-TB275_E_BUS

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

Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - South Morang F2 500/330kV XFMR - VIC region - 20/05/2026

The outage has been rescheduled for 0630 hrs 18/05/2026 to 1700 hrs 22/05/2026.

Constraint set(s) invoked: V-SMTX_F_R

This constraint set(s) contains equations with the following interconnectors on the LHS.
T-V-MNSP1,V-SA,VIC1-NSW1,V-S-MNSP1

Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation of [Forecast, Actual]Minimum System Load (MSL) MSL1 event in the SA Region on 17/05/2026.

Cancellation - [Forecast, Actual]MSL1- SA Region at 1430 hrs 17/05/2026.

Refer to Market Notice 144105for MSL1.

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
Forecast Minimum System Load MSL1 condition in the SA Region on 17/05/2026

AEMO has detected that there is an elevated risk of insufficient demand to maintain a secure operating state in the SA on 17/05/2026.

Minimum System Load (MSL) conditions are forecast when demand is less than the relevant MSL threshold. The advisory MSL thresholds are:
- MSL1: 603 MW
- MSL2: 328 MW
- MSL3: 113 MW

The demand is forecast to be below the MSL1 threshold for the following period[s]:
- From 1300 hrs 17/05/2026 to 1400 hrs 17/05/2026. Minimum demand is forecast to be 576 MW at 1400 hrs.


Forecast demand refers to forecast Operational Demand that excludes contribution from Significant Non-Scheduled Generation: see definitions at https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/data-nem/operational-demand-data .
AEMO is seeking a market response.
AEMO has not yet estimated the latest time it would need to intervene through an AEMO intervention event.


Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-Regional Transfer limit variation - Murraylink

There has been an unplanned outage of Murraylink.

The following constraint set was invoked at 1300 hrs 17/05/2026

I-ML_ZERO

The constraint set contains the following interconnector on the left hand side.

V-S-MNSP1

Refer to AEMO Network Outage Scheduler (NOS) for further details.

Manager NEM Real Time Operations