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125590RECLASSIFY CONTINGENCY12/03/2025 11:59:31 PM
Cancellation of a Non-Credible Contingency Event: Yallourn - Rowville 7 220 kV line and Yallourn - Rowville 8 220 kV line in VIC1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. 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.
Region: VIC1
Lines: Yallourn - Rowville 7 220 kV and Yallourn - Rowville 8 220 kV
Cancellation time: 12/03/2025 23:59
Constraint set(s) revoked:
V-ROYP78_R_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 125589
Auto-generated on behalf of Manager NEM Real Time Operations
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. 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.
Region: VIC1
Lines: Yallourn - Rowville 7 220 kV and Yallourn - Rowville 8 220 kV
Cancellation time: 12/03/2025 23:59
Constraint set(s) revoked:
V-ROYP78_R_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 125589
Auto-generated on behalf of Manager NEM Real Time Operations
125589RECLASSIFY CONTINGENCY12/03/2025 10:54:20 PM
Reclassification of a Non-Credible Contingency Event: Yallourn - Rowville 7 220 kV line and Yallourn - Rowville 8 220 kV line in VIC1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event 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.
Region: VIC1
Lines: Yallourn - Rowville 7 220 kV and Yallourn - Rowville 8 220 kV
Duration: 12/03/2025 22:54 until further notice
Constraint set(s) invoked:
V-ROYP78_R_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event 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.
Region: VIC1
Lines: Yallourn - Rowville 7 220 kV and Yallourn - Rowville 8 220 kV
Duration: 12/03/2025 22:54 until further notice
Constraint set(s) invoked:
V-ROYP78_R_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
125588RECLASSIFY CONTINGENCY12/03/2025 10:44:30 PM
Cancellation of a Non-Credible Contingency Event: Eildon PS - Mt Beauty No.1 220 kV line and Eildon PS - Mt Beauty No.2 220 kV line in VIC1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. 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.
Region: VIC1
Lines: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV
Cancellation time: 12/03/2025 22:44
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 125578
Auto-generated on behalf of Manager NEM Real Time Operations
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. 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.
Region: VIC1
Lines: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV
Cancellation time: 12/03/2025 22:44
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 125578
Auto-generated on behalf of Manager NEM Real Time Operations
125587RECLASSIFY CONTINGENCY12/03/2025 10:19:31 PM
Cancellation of a Non-Credible Contingency Event: Yallourn - Rowville 7 220 kV line and Yallourn - Rowville 8 220 kV line in VIC1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. 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.
Region: VIC1
Lines: Yallourn - Rowville 7 220 kV and Yallourn - Rowville 8 220 kV
Cancellation time: 12/03/2025 22:19
Constraint set(s) revoked:
V-ROYP78_R_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 125563
Auto-generated on behalf of Manager NEM Real Time Operations
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. 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.
Region: VIC1
Lines: Yallourn - Rowville 7 220 kV and Yallourn - Rowville 8 220 kV
Cancellation time: 12/03/2025 22:19
Constraint set(s) revoked:
V-ROYP78_R_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 125563
Auto-generated on behalf of Manager NEM Real Time Operations
125586RECLASSIFY CONTINGENCY12/03/2025 09:54:31 PM
Cancellation of a Non-Credible Contingency Event: Palmerston - Hadspen 3 & 4 110kV line and line in TAS1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. 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.
Region: TAS1
Lines: Palmerston - Hadspen 3 & 4 110kV and
Cancellation time: 12/03/2025 21:54
Constraint set(s) revoked:
T-HAPM_110_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 125551
Auto-generated on behalf of Manager NEM Real Time Operations
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. 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.
Region: TAS1
Lines: Palmerston - Hadspen 3 & 4 110kV and
Cancellation time: 12/03/2025 21:54
Constraint set(s) revoked:
T-HAPM_110_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 125551
Auto-generated on behalf of Manager NEM Real Time Operations
125585RECLASSIFY CONTINGENCY12/03/2025 09:44:31 PM
Cancellation of a Non-Credible Contingency Event: Tungatinah-Lake Echo-Waddamana 1 110kV line and Tungatinah-Waddamana 2 110kV line in TAS1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. 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.
Region: TAS1
Lines: Tungatinah-Lake Echo-Waddamana 1 110kV and Tungatinah-Waddamana 2 110kV
Cancellation time: 12/03/2025 21:44
Constraint set(s) revoked:
T-TUWA12_110_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 125549
Auto-generated on behalf of Manager NEM Real Time Operations
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. 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.
Region: TAS1
Lines: Tungatinah-Lake Echo-Waddamana 1 110kV and Tungatinah-Waddamana 2 110kV
Cancellation time: 12/03/2025 21:44
Constraint set(s) revoked:
T-TUWA12_110_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 125549
Auto-generated on behalf of Manager NEM Real Time Operations
125584RECLASSIFY CONTINGENCY12/03/2025 10:02:49 PM
Cancellation of the reclassification of a Non-Credible contingency event: Ulverstone - Emu Bay 110kV Line and Ulverstone - Sheffield tee Paloona 110kV Line in TAS due to Non-Credible Event.
AEMO ELECTRICITY MARKET NOTICE.
Cancellation of the reclassification of a Non-Credible contingency event as a Credible contingency event due to Non-Credible Event. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible Further investigation on the exact cause is required, however AEMO suspects the cause is due to lightning. There is no longer any lightning activity in the vicinity of the following elements. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS
Elements:
- Ulverstone - Emu Bay 110kV Line
- Ulverstone - Sheffield tee Paloona 110kV Line
Cancellation time: 22:00 hrs 12/03/2025
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 125568.
Manager NEM Real Time Operations
Cancellation of the reclassification of a Non-Credible contingency event as a Credible contingency event due to Non-Credible Event. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible Further investigation on the exact cause is required, however AEMO suspects the cause is due to lightning. There is no longer any lightning activity in the vicinity of the following elements. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS
Elements:
- Ulverstone - Emu Bay 110kV Line
- Ulverstone - Sheffield tee Paloona 110kV Line
Cancellation time: 22:00 hrs 12/03/2025
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 125568.
Manager NEM Real Time Operations
125583RECLASSIFY CONTINGENCY12/03/2025 10:02:49 PM
Cancellation of the reclassification of a Non-Credible contingency event: Sheffield - Burnie No.1 and No.2 220kV Lines and the Ulverstone - Emu Bay 110kV Line in TAS due to Non-Credible Event.
AEMO ELECTRICITY MARKET NOTICE.
Cancellation of the reclassification of a Non-Credible contingency event as a Credible contingency event due to Non-Credible Event. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible Further investigation on the exact cause is required, however AEMO suspects the cause is due to lightning. There is no longer any lightning activity in the vicinity of the following elements. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS
Elements:
- Sheffield - Burnie No.1 220 kV Line
- Sheffield - Burnie No.2 220 kV Line
- Ulverstone - Emu Bay 110kV Line
Cancellation time: 22:00 hrs 12/03/2025
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 125566.
Manager NEM Real Time Operations
Cancellation of the reclassification of a Non-Credible contingency event as a Credible contingency event due to Non-Credible Event. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible Further investigation on the exact cause is required, however AEMO suspects the cause is due to lightning. There is no longer any lightning activity in the vicinity of the following elements. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS
Elements:
- Sheffield - Burnie No.1 220 kV Line
- Sheffield - Burnie No.2 220 kV Line
- Ulverstone - Emu Bay 110kV Line
Cancellation time: 22:00 hrs 12/03/2025
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 125566.
Manager NEM Real Time Operations
125582RECLASSIFY CONTINGENCY12/03/2025 10:02:38 PM
Cancellation of the reclassification of a Non-Credible contingency event: Sheffield George Town No. 1 and No.2 220kV Lines plus 40 MW of Nystar Load and 56 MW of Temco Load in TAS due to Non-Credible Event.
AEMO ELECTRICITY MARKET NOTICE.
Cancellation of the reclassification of a Non-Credible contingency event as a Credible contingency event due to Non-Credible Event. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible Further investigation on the exact cause is required, however AEMO suspects the cause is due to lightning. There is no longer any lightning activity in the vicinity of the following elements. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS
Elements:
- Sheffield George Town No. 1 220kV Line
- Sheffield George Town No. 2 220kV Line
- 40 MW of Nystar Load
- 56 MW of Temco Load
Cancellation time: 22:00 hrs 12/03/2025
Constraint set(s) revoked: T-GTSH_N-2
Refer AEMO Electricity Market Notice 125561.
Manager NEM Real Time Operations
Cancellation of the reclassification of a Non-Credible contingency event as a Credible contingency event due to Non-Credible Event. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible Further investigation on the exact cause is required, however AEMO suspects the cause is due to lightning. There is no longer any lightning activity in the vicinity of the following elements. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS
Elements:
- Sheffield George Town No. 1 220kV Line
- Sheffield George Town No. 2 220kV Line
- 40 MW of Nystar Load
- 56 MW of Temco Load
Cancellation time: 22:00 hrs 12/03/2025
Constraint set(s) revoked: T-GTSH_N-2
Refer AEMO Electricity Market Notice 125561.
Manager NEM Real Time Operations