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Reclassification of a Non-Credible Contingency Event: Armidale - Dumaresq 8C 330kV line and Armidale - Sapphire WF 8E 330kV line in NSW1 due to Lightning.
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: NSW1
Lines: Armidale - Dumaresq 8C 330kV and Armidale - Sapphire WF 8E 330kV
Duration: 27/07/2025 16:22 until further notice
Constraint set(s) invoked:
N-ARDM_ARSR_1PH_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE Region QLD1 Saturday, 26 July 2025
NON-CONFORMANCE QLD1 Region Saturday, 26 July 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: ULPBESS1
Duration: 26/07/2025 21:15 to 26/07/2025 21:25
Amount: 6 MW
Constraint: NC-Q_ULPBESS1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE Region VIC1 Saturday, 26 July 2025
NON-CONFORMANCE VIC1 Region Saturday, 26 July 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: KESSB1
Duration: 26/07/2025 13:40 to 26/07/2025 14:05
Amount: 55 MW
Constraint: NC-V_KESSB1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE Region VIC1 Saturday, 26 July 2025
NON-CONFORMANCE VIC1 Region Saturday, 26 July 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: RANGEB1
Duration: 26/07/2025 12:45 to 26/07/2025 13:00
Amount: 102 MW
Constraint: NC-V_RANGEB1
Auto-generated on behalf of Manager NEM Real Time Operations
[EventId:202507260945_confirmed] Prices for interval 26-Jul-2025 09:45 are now confirmed
Issued by Australian Energy Market Operator Ltd at 1005 hrs on 26 July 2025
PRICES ARE NOW CONFIRMED for trading interval 26-Jul-2025 09:45.
In accordance with Market Notice 128362 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.
[EventId:202507261005_confirmed] Prices for interval 26-Jul-2025 10:05 are now confirmed
Issued by Australian Energy Market Operator Ltd at 1005 hrs on 26 July 2025
PRICES ARE NOW CONFIRMED for trading interval 26-Jul-2025 10:05.
In accordance with Market Notice 128366 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.
[EventId:202507261000_confirmed] Prices for interval 26-Jul-2025 10:00 are now confirmed
Issued by Australian Energy Market Operator Ltd at 1005 hrs on 26 July 2025
PRICES ARE NOW CONFIRMED for trading interval 26-Jul-2025 10:00.
In accordance with Market Notice 128365 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.
[EventId:202507260955_confirmed] Prices for interval 26-Jul-2025 09:55 are now confirmed
Issued by Australian Energy Market Operator Ltd at 1005 hrs on 26 July 2025
PRICES ARE NOW CONFIRMED for trading interval 26-Jul-2025 09:55.
In accordance with Market Notice 128364 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.
[EventId:202507260950_confirmed] Prices for interval 26-Jul-2025 09:50 are now confirmed
Issued by Australian Energy Market Operator Ltd at 1005 hrs on 26 July 2025
PRICES ARE NOW CONFIRMED for trading interval 26-Jul-2025 09:50.
In accordance with Market Notice 128363 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.