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125566POWER SYSTEM EVENTS12/03/2025 02:58:09 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 125556
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: Sheffield - Burnie No. 1 220kV Line, Sheffield - Burnie No. 2 110kV Line and the Ulverstone - Emu Bay 110kV Line
Duration: 1400 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 125556
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: Sheffield - Burnie No. 1 220kV Line, Sheffield - Burnie No. 2 110kV Line and the Ulverstone - Emu Bay 110kV Line
Duration: 1400 hrs 12/03/2025 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
125564POWER SYSTEM EVENTS12/03/2025 02:33:32 PM
Non-credible contingency event - TAS region - 12/03/2025
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - TAS region - 12/03/2025
At 1303 hrs the Ulverstone - Emu Bay 110kV Line and the Ulverstone - Sheffield tee Paloona 110kV Line tripped and auto reclosed.
AEMO did not instruct load shedding.
Approximately 12MW of bulk electrical load was disconnected momentarily.
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 - 12/03/2025
At 1303 hrs the Ulverstone - Emu Bay 110kV Line and the Ulverstone - Sheffield tee Paloona 110kV Line tripped and auto reclosed.
AEMO did not instruct load shedding.
Approximately 12MW of bulk electrical load was disconnected momentarily.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
125561POWER SYSTEM EVENTS12/03/2025 02:12:35 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 125555
Updated elements: Sheffield George Town No. 1 220kV Line, Sheffield George Town No. 2 220kV Line plus 40 MW load loss at Nystar and 56 MW load loss at Temco.
Manager NEM Real Time Operations
Update - Non-credible contingency event - TAS region - 12/03/2025
Refer AEMO Electricity Market Notice 125555
Updated elements: Sheffield George Town No. 1 220kV Line, Sheffield George Town No. 2 220kV Line plus 40 MW load loss at Nystar and 56 MW load loss at Temco.
Manager NEM Real Time Operations
125556POWER SYSTEM EVENTS12/03/2025 01:24:46 PM
Non-credible contingency event - TAS region - 12/03/2025
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - TAS region - 12/03/2025
At 1200 hrs the Sheffield - Burnie No. 1 220kV Line, Sheffield - Burnie 2 110kV Line and the Ulverstone - Emu Bay 110kV Line tripped.
AEMO did not instruct load shedding.
AEMO has been advised that 43MW of bulk 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 - TAS region - 12/03/2025
At 1200 hrs the Sheffield - Burnie No. 1 220kV Line, Sheffield - Burnie 2 110kV Line and the Ulverstone - Emu Bay 110kV Line tripped.
AEMO did not instruct load shedding.
AEMO has been advised that 43MW of bulk electrical load has been disconnected.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
125555POWER SYSTEM EVENTS12/03/2025 12:58:00 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 125554
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: Sheffield George Town No. 1 220kV Line and Sheffield George Town No. 2 220kV Line
Duration: 1300 hrs 12/03/2025 until further notice
Constraint set(s) invoked: T-GTSH_N-2
Manager NEM Real Time Operations
Update - Non-credible contingency event - TAS region - 12/03/2025
Refer AEMO Electricity Market Notice 125554
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: Sheffield George Town No. 1 220kV Line and Sheffield George Town No. 2 220kV Line
Duration: 1300 hrs 12/03/2025 until further notice
Constraint set(s) invoked: T-GTSH_N-2
Manager NEM Real Time Operations
125554POWER SYSTEM EVENTS12/03/2025 12:24:04 PM
Non-credible contingency event - TAS region - 12/03/2025
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - TAS region - 12/03/2025
At 1158 hrs the Sheffield George Town No. 1 220kV Line and the Sheffield George Town No. 2 220kV 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 - 12/03/2025
At 1158 hrs the Sheffield George Town No. 1 220kV Line and the Sheffield George Town No. 2 220kV 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
125550POWER SYSTEM EVENTS12/03/2025 09:47:07 AM
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 125548
At 09:29 hrs the Burnie - Smithton Tee Port Latta No. 1 110kV Line and the Burnie - Smithton Tee Port Latta No. 2 110kV Line tripped and auto-reclosed (2nd event).
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: Burnie - Smithton Tee Port Latta No. 1 110kV Line and Burnie - Smithton Tee Port Latta No. 2 110kV Line
Duration: 0940 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 125548
At 09:29 hrs the Burnie - Smithton Tee Port Latta No. 1 110kV Line and the Burnie - Smithton Tee Port Latta No. 2 110kV Line tripped and auto-reclosed (2nd event).
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: Burnie - Smithton Tee Port Latta No. 1 110kV Line and Burnie - Smithton Tee Port Latta No. 2 110kV Line
Duration: 0940 hrs 12/03/2025 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
125548POWER SYSTEM EVENTS12/03/2025 09:46:32 AM
Non-credible contingency event - TAS region - 12/03/2025
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - TAS region - 12/03/2025
At 0909 hrs the Burnie -Smithton Tee Port Latta No. 1 110kV Line and the Burnie -Smithton Tee Port Latta No. 2 110kV Line tripped and auto-reclosed.
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 - 12/03/2025
At 0909 hrs the Burnie -Smithton Tee Port Latta No. 1 110kV Line and the Burnie -Smithton Tee Port Latta No. 2 110kV Line tripped and auto-reclosed.
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
125524GENERAL NOTICE11/03/2025 01:51:14 PM
NEM Local Temperature Alerts for SA, VIC from 11 Mar 2025 to 15 Mar 2025
AEMO ELECTRICITY MARKET NOTICE
AEMO's weather service provider has issued forecast temperatures equal to or greater than the NEM Local Temperature Alert Levels for listed weather stations below.
SA
Port Augusta Ap (39+ Deg C): 14th Mar, 15th Mar
VIC
Latrobe Valley Ap (39+ Deg C): 15th Mar
Mildura Ap (39+ Deg C): 14th Mar, 15th Mar
The NEM Local Temperature Alert Levels are:
Launceston Ti Tree Bend: 33 Deg C, Dalby Airport: 37 Deg C, for all other selected weather stations: 39 Deg C.
AEMO requests Market Participants to:
1. review the weather forecast in the local area where their generating units / MNSP converter stations are located and,
2. if required, update the available capacity in their dispatch offers or availability submissions consistent with the forecast temperatures.
Further information is available at:
https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/nem-forecasting-and-planning/forecasting-and-reliability/projected-assessment-of-system-adequacy/nem-local-temperature-alerts
AEMO Operations Planning
AEMO's weather service provider has issued forecast temperatures equal to or greater than the NEM Local Temperature Alert Levels for listed weather stations below.
SA
Port Augusta Ap (39+ Deg C): 14th Mar, 15th Mar
VIC
Latrobe Valley Ap (39+ Deg C): 15th Mar
Mildura Ap (39+ Deg C): 14th Mar, 15th Mar
The NEM Local Temperature Alert Levels are:
Launceston Ti Tree Bend: 33 Deg C, Dalby Airport: 37 Deg C, for all other selected weather stations: 39 Deg C.
AEMO requests Market Participants to:
1. review the weather forecast in the local area where their generating units / MNSP converter stations are located and,
2. if required, update the available capacity in their dispatch offers or availability submissions consistent with the forecast temperatures.
Further information is available at:
https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/nem-forecasting-and-planning/forecasting-and-reliability/projected-assessment-of-system-adequacy/nem-local-temperature-alerts
AEMO Operations Planning