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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
127341NON-CONFORMANCE31/05/2025 12:50:15 PM
NON-CONFORMANCE Region QLD1 Saturday, 31 May 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE QLD1 Region Saturday, 31 May 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MPP_2
Duration: 31/05/2025 12:30 to 31/05/2025 12:50
Amount: 10 MW
Constraint: NC-Q_MPP_2
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE QLD1 Region Saturday, 31 May 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MPP_2
Duration: 31/05/2025 12:30 to 31/05/2025 12:50
Amount: 10 MW
Constraint: NC-Q_MPP_2
Auto-generated on behalf of Manager NEM Real Time Operations
127340NON-CONFORMANCE30/05/2025 11:00:14 PM
NON-CONFORMANCE Region QLD1 Friday, 30 May 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE QLD1 Region Friday, 30 May 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MPP_2
Duration: 30/05/2025 22:25 to 30/05/2025 23:00
Amount: -32 MW
Constraint: NC-Q_MPP_2
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE QLD1 Region Friday, 30 May 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MPP_2
Duration: 30/05/2025 22:25 to 30/05/2025 23:00
Amount: -32 MW
Constraint: NC-Q_MPP_2
Auto-generated on behalf of Manager NEM Real Time Operations
127337NON-CONFORMANCE30/05/2025 01:00:13 PM
NON-CONFORMANCE Region QLD1 Friday, 30 May 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE QLD1 Region Friday, 30 May 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MPP_1
Duration: 30/05/2025 11:50 to 30/05/2025 13:00
Amount: -63 MW
Constraint: NC-Q_MPP_1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE QLD1 Region Friday, 30 May 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MPP_1
Duration: 30/05/2025 11:50 to 30/05/2025 13:00
Amount: -63 MW
Constraint: NC-Q_MPP_1
Auto-generated on behalf of Manager NEM Real Time Operations
127335MARKET SYSTEMS29/05/2025 07:39:52 PM
Resolved - INC0145274 - Markets Portal - Unable to View Menu
AEMO ELECTRICITY MARKET NOTICE
SERVICE INTERRUPTION - RESOLVED
The service interruption relating to the Market Portal has been resolved.
For further enquiries please contact the AEMO Support Hub
Phone: 1300 236 600
Email: supporthub@aemo.com.au
SERVICE INTERRUPTION - RESOLVED
The service interruption relating to the Market Portal has been resolved.
For further enquiries please contact the AEMO Support Hub
Phone: 1300 236 600
Email: supporthub@aemo.com.au
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
127330GENERAL NOTICE29/05/2025 02:42:44 PM
Fast Frequency Response Market - Local dispatch of Very Fast Contingency FCAS in SA and QLD
AEMO ELECTRICITY MARKET NOTICE
Following a review of the operation of the Very Fast FCAS market, AEMO will commence local dispatch of Very Fast FCAS in the South Australia (SA) and Queensland (QLD) regions from 10th June 2025, during periods where islanding of the region is considered credible.
An initial dispatch cap of 100 MW will apply in the SA region, and 20 MW in the QLD region. These caps will be reviewed and updated regularly.
From the same date, AEMO will also dispatch Very Fast FCAS in the QLD region when an actual islanding event occurs. In this scenario, no dispatch cap will apply.
Dispatch of Very Fast FCAS in the SA region under actual islanding conditions commenced in 2024. Refer to Market Notice 117238 for further details.
For more information on the Fast Frequency Response (FFR) initiative, please visit:
https://www.aemo.com.au/initiatives/major-programs/fast-frequency-response
Andrew Groom
AEMO Operations
Following a review of the operation of the Very Fast FCAS market, AEMO will commence local dispatch of Very Fast FCAS in the South Australia (SA) and Queensland (QLD) regions from 10th June 2025, during periods where islanding of the region is considered credible.
An initial dispatch cap of 100 MW will apply in the SA region, and 20 MW in the QLD region. These caps will be reviewed and updated regularly.
From the same date, AEMO will also dispatch Very Fast FCAS in the QLD region when an actual islanding event occurs. In this scenario, no dispatch cap will apply.
Dispatch of Very Fast FCAS in the SA region under actual islanding conditions commenced in 2024. Refer to Market Notice 117238 for further details.
For more information on the Fast Frequency Response (FFR) initiative, please visit:
https://www.aemo.com.au/initiatives/major-programs/fast-frequency-response
Andrew Groom
AEMO Operations
127326NON-CONFORMANCE28/05/2025 06:00:15 PM
NON-CONFORMANCE Region QLD1 Wednesday, 28 May 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE QLD1 Region Wednesday, 28 May 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MPP_1
Duration: 28/05/2025 17:55 to 28/05/2025 18:00
Amount: -20 MW
Constraint: NC-Q_MPP_1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE QLD1 Region Wednesday, 28 May 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MPP_1
Duration: 28/05/2025 17:55 to 28/05/2025 18:00
Amount: -20 MW
Constraint: NC-Q_MPP_1
Auto-generated on behalf of Manager NEM Real Time Operations
127325MARKET SYSTEMS28/05/2025 05:21:32 PM
Completed - CHG0103591 - Pre-Prod MSATS 54.2 CICD Maintenance Release (MSATS App deployment only)
Change Number: CHG0103591
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: MSATS - Consumer Administration and Transfer Solution(CATS)
Change Title: Pre-Prod MSATS 54.2 CICD Maintenance Release (MSATS App deployment only)
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: MSATS - Consumer Administration and Transfer Solution(CATS)
Change Title: Pre-Prod MSATS 54.2 CICD Maintenance Release (MSATS App deployment only)
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.