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127343RECLASSIFY CONTINGENCY31/05/2025 05:02:27 PM
Reclassification of non-credible contingency event due to existence of widespread abnormal conditions - All NEM regions.
AEMO ELECTRICITY MARKET NOTICE.
AEMO has identified that a non-credible contingency event impacting the power system is more likely to occur and is considered reasonably possible because of the existence of widespread abnormal conditions namely Severe Space Weather Watch in all NEM regions.
AEMO has therefore reclassified the occurrence of a non-credible contingency event involving multiple plant due to these abnormal conditions as credible.
Need for further measures is being monitored and further measures may be implemented in line with the Power System Security Guidelines (SO_OP_3715).
Manager NEM Real Time Operations
AEMO has identified that a non-credible contingency event impacting the power system is more likely to occur and is considered reasonably possible because of the existence of widespread abnormal conditions namely Severe Space Weather Watch in all NEM regions.
AEMO has therefore reclassified the occurrence of a non-credible contingency event involving multiple plant due to these abnormal conditions as credible.
Need for further measures is being monitored and further measures may be implemented in line with the Power System Security Guidelines (SO_OP_3715).
Manager NEM Real Time Operations
127333RECLASSIFY CONTINGENCY29/05/2025 04:58:51 PM
Cancellation of the Reclassification of a Non-Credible Contingency Event: Loss of the Sheffield - Burnie No. 1 220kV Line, Sheffield - Burnie No. 2 110kV Line and the Ulverstone - Emu Bay 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 .
Based on advice received from the asset owner, AEMO no longer considers the trip of the Sheffield - Burnie No. 1 220kV Line, Sheffield - Burnie No. 2 110kV Line and the Ulverstone - Emu Bay 110kV Line in TAS1 due to lightning as a credible contingency when there is lightning activity in the vicinity.
Accordingly the reclassification as a credible contingency is cancelled .
Region: TAS1
Element: Sheffield - Burnie No. 1 220kV Line, Sheffield - Burnie No. 2 110kV Line and the Ulverstone - Emu Bay 110kV Line
Cancellation time: 29/05/2025 1600 hrs
Constraint set(s) revoked: NONE
Refer AEMO Electricity Market Notices 125566
Manager NEM Real Time Operations
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event .
Based on advice received from the asset owner, AEMO no longer considers the trip of the Sheffield - Burnie No. 1 220kV Line, Sheffield - Burnie No. 2 110kV Line and the Ulverstone - Emu Bay 110kV Line in TAS1 due to lightning as a credible contingency when there is lightning activity in the vicinity.
Accordingly the reclassification as a credible contingency is cancelled .
Region: TAS1
Element: Sheffield - Burnie No. 1 220kV Line, Sheffield - Burnie No. 2 110kV Line and the Ulverstone - Emu Bay 110kV Line
Cancellation time: 29/05/2025 1600 hrs
Constraint set(s) revoked: NONE
Refer AEMO Electricity Market Notices 125566
Manager NEM Real Time Operations
127319PRICES UNCHANGED27/05/2025 06:00:15 PM
[EventId:202505271740_confirmed] Prices for interval 27-May-2025 17:40 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1800 hrs on 27 May 2025
PRICES ARE NOW CONFIRMED for trading interval 27-May-2025 17:40.
In accordance with Market Notice 127309 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1800 hrs on 27 May 2025
PRICES ARE NOW CONFIRMED for trading interval 27-May-2025 17:40.
In accordance with Market Notice 127309 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
127318PRICES UNCHANGED27/05/2025 06:00:15 PM
[EventId:202505271800_confirmed] Prices for interval 27-May-2025 18:00 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1800 hrs on 27 May 2025
PRICES ARE NOW CONFIRMED for trading interval 27-May-2025 18:00.
In accordance with Market Notice 127313 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1800 hrs on 27 May 2025
PRICES ARE NOW CONFIRMED for trading interval 27-May-2025 18:00.
In accordance with Market Notice 127313 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
127317PRICES UNCHANGED27/05/2025 06:00:14 PM
[EventId:202505271755_confirmed] Prices for interval 27-May-2025 17:55 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1800 hrs on 27 May 2025
PRICES ARE NOW CONFIRMED for trading interval 27-May-2025 17:55.
In accordance with Market Notice 127312 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1800 hrs on 27 May 2025
PRICES ARE NOW CONFIRMED for trading interval 27-May-2025 17:55.
In accordance with Market Notice 127312 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
127316PRICES UNCHANGED27/05/2025 06:00:14 PM
[EventId:202505271750_confirmed] Prices for interval 27-May-2025 17:50 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1800 hrs on 27 May 2025
PRICES ARE NOW CONFIRMED for trading interval 27-May-2025 17:50.
In accordance with Market Notice 127311 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1800 hrs on 27 May 2025
PRICES ARE NOW CONFIRMED for trading interval 27-May-2025 17:50.
In accordance with Market Notice 127311 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
127315PRICES UNCHANGED27/05/2025 06:00:13 PM
[EventId:202505271745_confirmed] Prices for interval 27-May-2025 17:45 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1800 hrs on 27 May 2025
PRICES ARE NOW CONFIRMED for trading interval 27-May-2025 17:45.
In accordance with Market Notice 127310 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1800 hrs on 27 May 2025
PRICES ARE NOW CONFIRMED for trading interval 27-May-2025 17:45.
In accordance with Market Notice 127310 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
127314PRICES UNCHANGED27/05/2025 06:00:13 PM
[EventId:202505271735_confirmed] Prices for interval 27-May-2025 17:35 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1800 hrs on 27 May 2025
PRICES ARE NOW CONFIRMED for trading interval 27-May-2025 17:35.
In accordance with Market Notice 127308 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1800 hrs on 27 May 2025
PRICES ARE NOW CONFIRMED for trading interval 27-May-2025 17:35.
In accordance with Market Notice 127308 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
127304POWER SYSTEM EVENTS27/05/2025 12:30:40 PM
Update - Non-credible contingency event - NSW region - 07/03/2025
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - NSW region - 07/03/2025
Refer AEMO Electricity Market Notice 125536
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 no longer reclassify this event as a credible contingency event.
Region: NSW
Elements:
- Lismore132 - Mullumbimby 9U6 132kV Line
- Lismore132 - Mullumbimby 9U7 132kV Line
- Ewingsdale - Mullumbimby 9G5 132kV Line
Duration: 1730 hrs 11/03/2025 until 1230 hrs 27/05/2025
Constraint set(s) invoked: NONE
Manager NEM Real Time Operations
Update - Non-credible contingency event - NSW region - 07/03/2025
Refer AEMO Electricity Market Notice 125536
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 no longer reclassify this event as a credible contingency event.
Region: NSW
Elements:
- Lismore132 - Mullumbimby 9U6 132kV Line
- Lismore132 - Mullumbimby 9U7 132kV Line
- Ewingsdale - Mullumbimby 9G5 132kV Line
Duration: 1730 hrs 11/03/2025 until 1230 hrs 27/05/2025
Constraint set(s) invoked: NONE
Manager NEM Real Time Operations