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126619RECLASSIFY CONTINGENCY20/04/2025 03:39:40 PM
Cancellation of a Non-Credible Contingency Event: Norwood - Scottsdale 1 110kV line and Norwood-Derby-Scottsdale 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: Norwood - Scottsdale 1 110kV and Norwood-Derby-Scottsdale 110kV
Cancellation time: 20/04/2025 15:39
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 126605
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: Norwood - Scottsdale 1 110kV and Norwood-Derby-Scottsdale 110kV
Cancellation time: 20/04/2025 15:39
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 126605
Auto-generated on behalf of Manager NEM Real Time Operations
126606MARKET INTERVENTION20/04/2025 08:05:47 PM
Cancellation: Direction issued to: Origin Energy Electricity Limited - QUARANTINE PS UNIT 5
AEMO ELECTRICITY MARKET NOTICE
Cancellation: Direction issued to: Origin Energy Electricity Limited - QUARANTINE PS UNIT 5
Refer to Market Notice 126603
Direction is cancelled from: 2000 hrs 20/04/2025
Manager NEM Real Time Operations
Cancellation: Direction issued to: Origin Energy Electricity Limited - QUARANTINE PS UNIT 5
Refer to Market Notice 126603
Direction is cancelled from: 2000 hrs 20/04/2025
Manager NEM Real Time Operations
126605RECLASSIFY CONTINGENCY20/04/2025 02:37:50 PM
Reclassification of a Non-Credible Contingency Event: Norwood - Scottsdale 1 110kV line and Norwood-Derby-Scottsdale 110kV line in TAS1 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: TAS1
Lines: Norwood - Scottsdale 1 110kV and Norwood-Derby-Scottsdale 110kV
Duration: 20/04/2025 14:37 until further notice
Constraint set(s) invoked:
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: TAS1
Lines: Norwood - Scottsdale 1 110kV and Norwood-Derby-Scottsdale 110kV
Duration: 20/04/2025 14:37 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
126604MARKET INTERVENTION20/04/2025 02:36:44 PM
Update Direction - Pelican Point Power Limited - PPCCGT PELICAN POINT
AEMO ELECTRICITY MARKET NOTICE.
Update Direction - Pelican Point Power Limited - PPCCGT PELICAN POINT
Refer to Market Notice 126597
The PPCCGT PELICAN POINT direction is now expected to stay in place until 0400 hrs 22/04/2025.
The direction update is issued at 1435 hrs 20/04/2025.
Manager NEM Real Time Operations
Update Direction - Pelican Point Power Limited - PPCCGT PELICAN POINT
Refer to Market Notice 126597
The PPCCGT PELICAN POINT direction is now expected to stay in place until 0400 hrs 22/04/2025.
The direction update is issued at 1435 hrs 20/04/2025.
Manager NEM Real Time Operations
126603MARKET INTERVENTION20/04/2025 02:34:12 PM
Update Direction - Origin Energy Electricity Limited - QUARANTINE PS UNIT 5
AEMO ELECTRICITY MARKET NOTICE.
Update Direction - Origin Energy Electricity Limited - QUARANTINE PS UNIT 5
Refer to Market Notice 126596
The QUARANTINE PS UNIT 5 direction is now expected to stay in place until 2000 hrs 20/04/2025.
The direction update is issued at 1430 hrs 20/04/2025.
Manager NEM Real Time Operations
Update Direction - Origin Energy Electricity Limited - QUARANTINE PS UNIT 5
Refer to Market Notice 126596
The QUARANTINE PS UNIT 5 direction is now expected to stay in place until 2000 hrs 20/04/2025.
The direction update is issued at 1430 hrs 20/04/2025.
Manager NEM Real Time Operations
126602MARKET INTERVENTION20/04/2025 02:35:24 PM
Direction - SA region to AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
AEMO ELECTRICITY MARKET NOTICE
Direction - SA region to AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
Refer to Market Notice 126592
In accordance with section 116 of the National Electricity Law, AEMO is issuing a direction to AGL SA Generation Pty Limited. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a1)(1).
Direction issued to: AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN at 1430 hrs 20/04/2025
Type of resource: generating unit
Required actions: Synchronise and follow dispatch targets at 2000 hrs 20/04/2025
Services provided: Voltage Control
Circumstances necessitating the Direction: Voltage
Circumstances necessitating the Direction additional detail: The synchronous generating units currently expected to be synchronised in SA will be inadequate to maintain sufficient Voltage Control in SA. Intervention is required to maintain the power system in a secure operating state
Expected duration: 0400 hrs 22/04/2025.
AGL SA Generation Pty Limited does not incur any civil monetary liability for a relevant action taken in accordance with this direction unless the action is taken in bad faith.
Manager NEM Real Time Operations
Direction - SA region to AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
Refer to Market Notice 126592
In accordance with section 116 of the National Electricity Law, AEMO is issuing a direction to AGL SA Generation Pty Limited. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a1)(1).
Direction issued to: AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN at 1430 hrs 20/04/2025
Type of resource: generating unit
Required actions: Synchronise and follow dispatch targets at 2000 hrs 20/04/2025
Services provided: Voltage Control
Circumstances necessitating the Direction: Voltage
Circumstances necessitating the Direction additional detail: The synchronous generating units currently expected to be synchronised in SA will be inadequate to maintain sufficient Voltage Control in SA. Intervention is required to maintain the power system in a secure operating state
Expected duration: 0400 hrs 22/04/2025.
AGL SA Generation Pty Limited does not incur any civil monetary liability for a relevant action taken in accordance with this direction unless the action is taken in bad faith.
Manager NEM Real Time Operations
126601RECLASSIFY CONTINGENCY20/04/2025 08:04:30 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 126600, 126598
Further information from the participant revealed 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: NSW
Elements: Uralla - New England Solar Farm No.1 330/33 kV Transformer and New England No.2 Solar Farm
Duration: 0745 hrs 19/04/2025 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
Update - Non-credible contingency event - NSW region - 19/04/2025
Refer AEMO Electricity Market Notice 126600, 126598
Further information from the participant revealed 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: NSW
Elements: Uralla - New England Solar Farm No.1 330/33 kV Transformer and New England No.2 Solar Farm
Duration: 0745 hrs 19/04/2025 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
126597MARKET INTERVENTION19/04/2025 02:15:55 PM
Update Direction - Pelican Point Power Limited - PPCCGT PELICAN POINT
AEMO ELECTRICITY MARKET NOTICE.
Update Direction - Pelican Point Power Limited - PPCCGT PELICAN POINT
Refer to Market Notice 126593
The PPCCGT PELICAN POINT direction is now expected to stay in place until 0400 hrs 21/04/2025.
The direction update is issued at 1415 hrs 19/04/2025.
Manager NEM Real Time Operations
Update Direction - Pelican Point Power Limited - PPCCGT PELICAN POINT
Refer to Market Notice 126593
The PPCCGT PELICAN POINT direction is now expected to stay in place until 0400 hrs 21/04/2025.
The direction update is issued at 1415 hrs 19/04/2025.
Manager NEM Real Time Operations
126596MARKET INTERVENTION19/04/2025 02:14:34 PM
Update Direction - Origin Energy Electricity Limited - QUARANTINE PS UNIT 5
AEMO ELECTRICITY MARKET NOTICE.
Update Direction - Origin Energy Electricity Limited - QUARANTINE PS UNIT 5
Refer to Market Notice 126595
The QUARANTINE PS UNIT 5 direction is now expected to stay in place until 0400 hrs 21/04/2025.
The direction update is issued at 1415 hrs 19/04/2025.
Manager NEM Real Time Operations
Update Direction - Origin Energy Electricity Limited - QUARANTINE PS UNIT 5
Refer to Market Notice 126595
The QUARANTINE PS UNIT 5 direction is now expected to stay in place until 0400 hrs 21/04/2025.
The direction update is issued at 1415 hrs 19/04/2025.
Manager NEM Real Time Operations