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141036POWER SYSTEM EVENTS11/04/2026 02:32:09 PM
Non-credible contingency event - TAS region - 11/04/2026
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - TAS region - 11/04/2026
At 1357 hrs the Farrell -Tribute 220 kV line, Farrell - John Butters 220kV Lines and Farrell - Mackintosh 110kV Line 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 - TAS region - 11/04/2026
At 1357 hrs the Farrell -Tribute 220 kV line, Farrell - John Butters 220kV Lines and Farrell - Mackintosh 110kV Line 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
141012POWER SYSTEM EVENTS10/04/2026 06:04:13 PM
Non-credible contingency event - TAS region - 10/04/2026
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - TAS region - 10/04/2026
At 1646 hrs the Farrell - Reece No.1 220 kV and Farrell - Reece No.2 220 kV lines tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of the trip was identified as due to lightning.
In accordance with SO_OP_3715, the Farrell - Reece No.1 and No.2 220 kV lines are considered vulnerable with a category of probable due to lightning.
At the time of the trip, Farrell - Reece No.1 220 kV and Farrell - Reece No.2 220 kV lines were not reclassified 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 from 16:50 hrs until further notice.
Refer market notice 141010
Manager NEM Real Time Operations
Non-credible contingency event - TAS region - 10/04/2026
At 1646 hrs the Farrell - Reece No.1 220 kV and Farrell - Reece No.2 220 kV lines tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of the trip was identified as due to lightning.
In accordance with SO_OP_3715, the Farrell - Reece No.1 and No.2 220 kV lines are considered vulnerable with a category of probable due to lightning.
At the time of the trip, Farrell - Reece No.1 220 kV and Farrell - Reece No.2 220 kV lines were not reclassified 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 from 16:50 hrs until further notice.
Refer market notice 141010
Manager NEM Real Time Operations
134010POWER SYSTEM EVENTS02/03/2026 02:37:52 AM
Update - Non-credible contingency event - QLD region - 19/02/2026
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - QLD region - 19/02/2026
Refer AEMO Electricity Market Notice 133799
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 cancel the reclassification of this event as a credible contingency event.
Manager NEM Real Time Operations
Update - Non-credible contingency event - QLD region - 19/02/2026
Refer AEMO Electricity Market Notice 133799
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 cancel the reclassification of this event as a credible contingency event.
Manager NEM Real Time Operations
133798POWER SYSTEM EVENTS19/02/2026 05:15:37 PM
Non-credible contingency event - QLD region - 19/02/2026
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - QLD region - 19/02/2026
At 1650 hrs the Goonyella - North Goonyella Tee - Stoney Creek No. 7122 and Goonyella - Newlands No. 7155 132 kV Lines tripped.
AEMO did not instruct load shedding.
AEMO has been advised of 36 MW of bulk electrical load disconnection.
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 - 19/02/2026
At 1650 hrs the Goonyella - North Goonyella Tee - Stoney Creek No. 7122 and Goonyella - Newlands No. 7155 132 kV Lines tripped.
AEMO did not instruct load shedding.
AEMO has been advised of 36 MW of bulk electrical load disconnection.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
133774POWER SYSTEM EVENTS19/02/2026 10:57:53 AM
Non-credible contingency event - NSW region - 19/02/2026
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - NSW region - 19/02/2026
At 0931 hrs the Stockdill - Upper Tumut No 1 330kV line opened at the Stockdill end only.
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 - 19/02/2026
At 0931 hrs the Stockdill - Upper Tumut No 1 330kV line opened at the Stockdill end only.
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
133344POWER SYSTEM EVENTS06/02/2026 02:28:10 PM
Update - Non-credible contingency event - NSW region - 02/02/2026
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - NSW region - 02/02/2026
Refer AEMO Electricity Market Notice 133232
On 02/02/2026 there was an unplanned outage of Vales Point Power Station Unit 5 and Unit 6.
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 - 02/02/2026
Refer AEMO Electricity Market Notice 133232
On 02/02/2026 there was an unplanned outage of Vales Point Power Station Unit 5 and Unit 6.
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
133259POWER SYSTEM EVENTS03/02/2026 07:51:06 PM
Update - Non-credible contingency event - NSW region - 03/02/2026
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - NSW region - 03/02/2026
Refer AEMO Electricity Market Notice 133016
At 1909 hrs the Balranald- Buronga X3 220 kV line 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 - NSW region - 03/02/2026
Refer AEMO Electricity Market Notice 133016
At 1909 hrs the Balranald- Buronga X3 220 kV line 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
133251POWER SYSTEM EVENTS03/02/2026 01:56:13 PM
Update - Non-credible contingency event - QLD region - 03/02/2026
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - QLD region - 03/02/2026
Refer AEMO Electricity Market Notice 133249
At 1310 hrs the Chalumbin 1 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 - 03/02/2026
Refer AEMO Electricity Market Notice 133249
At 1310 hrs the Chalumbin 1 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
133249POWER SYSTEM EVENTS03/02/2026 12:24:05 PM
Non-credible contingency event - QLD region - 03/02/2026
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - QLD region - 03/02/2026
At 1203 hrs the Chalumbin 1 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 - 03/02/2026
At 1203 hrs the Chalumbin 1 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