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126600POWER SYSTEM EVENTS20/04/2025 06:23:59 AM
Update - Non-credible contingency event - NSW region - 19/04/2025
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - NSW region - 19/04/2025
Refer AEMO Electricity Market Notice 126598
At 0617 hrs the Uralla - New England Solar Farm No.1 330/33 kV Transformer and New England No.2 Solar Farm 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 - 19/04/2025
Refer AEMO Electricity Market Notice 126598
At 0617 hrs the Uralla - New England Solar Farm No.1 330/33 kV Transformer and New England No.2 Solar Farm 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
126598POWER SYSTEM EVENTS19/04/2025 02:39:05 PM
Non-credible contingency event - NSW region - 19/04/2025
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - NSW region - 19/04/2025
At 1351 hrs the Uralla - New England Solar Farm No.1 330/33 kV Transformer and New England No.2 Solar Farm 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 - 19/04/2025
At 1351 hrs the Uralla - New England Solar Farm No.1 330/33 kV Transformer and New England No.2 Solar Farm 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
126580POWER SYSTEM EVENTS17/04/2025 12:38:34 PM
Update - Non-credible contingency event - QLD region - 16/04/2025
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - QLD region - 16/04/2025
Refer AEMO Electricity Market Notice 126579
At 1231 hrs the Greenbank - Molendinar 8825 275kV 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 - QLD region - 16/04/2025
Refer AEMO Electricity Market Notice 126579
At 1231 hrs the Greenbank - Molendinar 8825 275kV 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
126579POWER SYSTEM EVENTS16/04/2025 11:10:49 PM
Non-credible contingency event - QLD region - 16/04/2025
AEMO ELECTRICITY MARKET NOTICE.
Refer market notice: 126577
Non-credible contingency event - QLD region - 16/04/2025
At 2110 hrs the Greenbank - Molendinar 8825 275kV line tripped at the Molendinar 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
Refer market notice: 126577
Non-credible contingency event - QLD region - 16/04/2025
At 2110 hrs the Greenbank - Molendinar 8825 275kV line tripped at the Molendinar 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
126271POWER SYSTEM EVENTS04/04/2025 07:44:04 AM
Update - Non-credible contingency event - QLD region - 04/04/2025
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - QLD region - 04/04/2025
Refer AEMO Electricity Market Notice 126262
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 - 04/04/2025
Refer AEMO Electricity Market Notice 126262
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
126262POWER SYSTEM EVENTS04/04/2025 02:15:54 AM
Non-credible contingency event - QLD region - 04/04/2025
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - QLD region - 04/04/2025
At 0152 hrs the Ross - Townsville South No 7156 and 7249 132kV lines tripped and auto reclosed.
The cause of this non credible contingency event is not known at this stage.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.
Region: QLD
Elements: Ross - Townsville South No 7156 and 7249 132kV lines.
Duration: 0152 hrs 04/04/2025 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
Non-credible contingency event - QLD region - 04/04/2025
At 0152 hrs the Ross - Townsville South No 7156 and 7249 132kV lines tripped and auto reclosed.
The cause of this non credible contingency event is not known at this stage.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.
Region: QLD
Elements: Ross - Townsville South No 7156 and 7249 132kV lines.
Duration: 0152 hrs 04/04/2025 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
125963POWER SYSTEM EVENTS26/03/2025 04:20:27 PM
Non-credible contingency event - TAS region - 26/03/2025
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - TAS region - 26/03/2025
At 1551 hrs the Palmerston A 220kV Bus tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
Approximately 40MW of generation was disconnected.
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 - TAS region - 26/03/2025
At 1551 hrs the Palmerston A 220kV Bus tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
Approximately 40MW of generation was disconnected.
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
125701POWER SYSTEM EVENTS16/03/2025 11:47:57 AM
Non-credible contingency event - QLD region - 16/03/2025
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - QLD region - 16/03/2025
At 1131 hrs the H35 Strathmore 132 kV No 2 bus tripped. Whitsunday Solar farm and Hamilton Solar farm were disconnected.
AEMO did not instruct load shedding.
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 - 16/03/2025
At 1131 hrs the H35 Strathmore 132 kV No 2 bus tripped. Whitsunday Solar farm and Hamilton Solar farm were disconnected.
AEMO did not instruct load shedding.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
125568POWER SYSTEM EVENTS12/03/2025 03:00:00 PM
Update - Non-credible contingency event - TAS region - 12/03/2025
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - TAS region - 12/03/2025
Refer AEMO Electricity Market Notice 125564
The cause of this non credible contingency event is not known at this stage.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.
Region: TAS
Elements: Ulverstone - Emu Bay 110kV Line and the Ulverstone - Sheffield tee Paloona 110kV Line
Duration: 1500 hrs 12/03/2025 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
Update - Non-credible contingency event - TAS region - 12/03/2025
Refer AEMO Electricity Market Notice 125564
The cause of this non credible contingency event is not known at this stage.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.
Region: TAS
Elements: Ulverstone - Emu Bay 110kV Line and the Ulverstone - Sheffield tee Paloona 110kV Line
Duration: 1500 hrs 12/03/2025 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations