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144020NON-CONFORMANCE30/04/2026 01:25:18 PM
NON-CONFORMANCE Region VIC1 Thursday, 30 April 2026
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE VIC1 Region Thursday, 30 April 2026
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: RYANCWF1
Duration: 30/04/2026 13:15 to 30/04/2026 13:25
Amount: 15 MW
Constraint: NC-V_RYANCWF1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE VIC1 Region Thursday, 30 April 2026
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: RYANCWF1
Duration: 30/04/2026 13:15 to 30/04/2026 13:25
Amount: 15 MW
Constraint: NC-V_RYANCWF1
Auto-generated on behalf of Manager NEM Real Time Operations
144009NON-CONFORMANCE28/04/2026 02:45:17 PM
NON-CONFORMANCE Region NSW1 Tuesday, 28 April 2026
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE NSW1 Region Tuesday, 28 April 2026
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: VP6
Duration: 28/04/2026 14:40 to 28/04/2026 14:45
Amount: -159 MW
Constraint: NC-N_VP6
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE NSW1 Region Tuesday, 28 April 2026
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: VP6
Duration: 28/04/2026 14:40 to 28/04/2026 14:45
Amount: -159 MW
Constraint: NC-N_VP6
Auto-generated on behalf of Manager NEM Real Time Operations
143947NON-CONFORMANCE27/04/2026 09:10:16 PM
NON-CONFORMANCE Region QLD1 Monday, 27 April 2026
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE QLD1 Region Monday, 27 April 2026
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MPP_1
Duration: 27/04/2026 19:10 to 27/04/2026 21:10
Amount: -35 MW
Constraint: NC-Q_MPP_1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE QLD1 Region Monday, 27 April 2026
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MPP_1
Duration: 27/04/2026 19:10 to 27/04/2026 21:10
Amount: -35 MW
Constraint: NC-Q_MPP_1
Auto-generated on behalf of Manager NEM Real Time Operations
143524NON-CONFORMANCE26/04/2026 07:55:20 AM
NON-CONFORMANCE Region QLD1 Sunday, 26 April 2026
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE QLD1 Region Sunday, 26 April 2026
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: SWANBBF1
Duration: 26/04/2026 07:50 to 26/04/2026 07:55
Amount: 130 MW
Constraint: NC-Q_SWANBBF1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE QLD1 Region Sunday, 26 April 2026
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: SWANBBF1
Duration: 26/04/2026 07:50 to 26/04/2026 07:55
Amount: 130 MW
Constraint: NC-Q_SWANBBF1
Auto-generated on behalf of Manager NEM Real Time Operations
143503NON-CONFORMANCE25/04/2026 10:10:18 AM
NON-CONFORMANCE Region VIC1 Saturday, 25 April 2026
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE VIC1 Region Saturday, 25 April 2026
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: LANCSF1
Duration: 25/04/2026 10:05 to 25/04/2026 10:10
Amount: 30 MW
Constraint: NC-V_LANCSF1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE VIC1 Region Saturday, 25 April 2026
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: LANCSF1
Duration: 25/04/2026 10:05 to 25/04/2026 10:10
Amount: 30 MW
Constraint: NC-V_LANCSF1
Auto-generated on behalf of Manager NEM Real Time Operations
143123NON-CONFORMANCE23/04/2026 03:45:20 PM
NON-CONFORMANCE Region SA1 Thursday, 23 April 2026
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE SA1 Region Thursday, 23 April 2026
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: BUNGAMB1
Duration: 23/04/2026 15:20 to 23/04/2026 15:45
Amount: -55 MW
Constraint: NC-S_BUNGAMB1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE SA1 Region Thursday, 23 April 2026
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: BUNGAMB1
Duration: 23/04/2026 15:20 to 23/04/2026 15:45
Amount: -55 MW
Constraint: NC-S_BUNGAMB1
Auto-generated on behalf of Manager NEM Real Time Operations
141087POWER SYSTEM EVENTS15/04/2026 03:45:55 PM
Non-credible contingency event - VIC region - 15/04/2026
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - VIC region - 15/04/2026
At 1506 hrs the JLysaght - Tyabb 1 220kV Line and the JLysaght - Tyabb 2 220kV Line tripped.
AEMO did not instruct load shedding.
AEMO has been advised of disconnection of 16 MWs 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 - VIC region - 15/04/2026
At 1506 hrs the JLysaght - Tyabb 1 220kV Line and the JLysaght - Tyabb 2 220kV Line tripped.
AEMO did not instruct load shedding.
AEMO has been advised of disconnection of 16 MWs 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
141069POWER SYSTEM EVENTS13/04/2026 08:39:49 PM
Update - Non-credible contingency event - TAS region - 11/04/2026
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - TAS region - 11/04/2026
Refer AEMO Electricity Market Notice 141053
At 1357 hrs 11/04/2026 the Farrell -Tribute 220 kV line, Farrell - John Butters 220kV Line and the Farrell - Mackintosh 110kV Line tripped. These lines have been returned to service.
The cause of the trip was identified as due to lightning
There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible.
Region: TAS1
Lines: Farrell -Tribute 220 kV line, Farrell - John Butters 220kV Line and the Farrell - Mackintosh 110kV lines
Cancellation time: 13/04/2026 20:25
Constraint set(s) revoked: T-JB_MC_TI_250, F-T-JB_MC_TI_N-2
The following interconnector(s) are on the left hand side: T-V-MNSP1
Manager NEM Real Time Operations
Update - Non-credible contingency event - TAS region - 11/04/2026
Refer AEMO Electricity Market Notice 141053
At 1357 hrs 11/04/2026 the Farrell -Tribute 220 kV line, Farrell - John Butters 220kV Line and the Farrell - Mackintosh 110kV Line tripped. These lines have been returned to service.
The cause of the trip was identified as due to lightning
There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible.
Region: TAS1
Lines: Farrell -Tribute 220 kV line, Farrell - John Butters 220kV Line and the Farrell - Mackintosh 110kV lines
Cancellation time: 13/04/2026 20:25
Constraint set(s) revoked: T-JB_MC_TI_250, F-T-JB_MC_TI_N-2
The following interconnector(s) are on the left hand side: T-V-MNSP1
Manager NEM Real Time Operations
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