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144166POWER SYSTEM EVENTS29/05/2026 09:41:16 PM
Update - Non-credible contingency event - QLD region - 29/05/2026
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
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
144162POWER SYSTEM EVENTS29/05/2026 10:50:40 AM
Non-credible contingency event - QLD region - 29/05/2026
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
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
144117POWER SYSTEM EVENTS18/05/2026 01:54:51 PM
Update - Non-credible contingency event -NSW region - 17 May 2026
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
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
144112POWER SYSTEM EVENTS18/05/2026 12:00:40 AM
Non-credible contingency event - NSW region - 17/05/2026
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
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
144110MINIMUM SYSTEM LOAD17/05/2026 02:42:23 PM
Cancellation of [Forecast, Actual]Minimum System Load (MSL) MSL1 event in the SA Region on 17/05/2026.
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
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
144105MINIMUM SYSTEM LOAD17/05/2026 01:17:19 PM
Forecast Minimum System Load MSL1 condition in the SA Region on 17/05/2026
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
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
144074POWER SYSTEM EVENTS13/05/2026 01:49:17 PM
Update - Non-credible contingency event - QLD region - 13/05/2026
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - QLD region - 13/05/2026
Refer AEMO Electricity Market Notice 144073
At 1341 hrs the T157 Ingham South No.1 and No.2 132/66kV Transformers were 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
Update - Non-credible contingency event - QLD region - 13/05/2026
Refer AEMO Electricity Market Notice 144073
At 1341 hrs the T157 Ingham South No.1 and No.2 132/66kV Transformers were 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
144073POWER SYSTEM EVENTS13/05/2026 01:23:44 PM
Non-credible contingency event - QLD region - 13/05/2026
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - QLD region - 13/05/2026
At 1255 hrs the T157 Ingham South No.1 and No.2 132/66kV Transformers tripped.
AEMO did not instruct load shedding.
AEMO estimates approximately 6MW of electrical load has been disconnected.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Non-credible contingency event - QLD region - 13/05/2026
At 1255 hrs the T157 Ingham South No.1 and No.2 132/66kV Transformers tripped.
AEMO did not instruct load shedding.
AEMO estimates approximately 6MW of electrical load has been disconnected.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
144053POWER SYSTEM EVENTS06/05/2026 01:21:48 PM
Non-credible contingency event - QLD region - 6/05/2026
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - QLD region - 6/05/2026
At 1239 hrs the Townsville South No. 2 132 kV 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 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
Non-credible contingency event - QLD region - 6/05/2026
At 1239 hrs the Townsville South No. 2 132 kV 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 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