Market Notices

128389MARKET SYSTEMS28/07/2025 02:04:20 PM

Initial - CHG0104496 - Planned Firewall maintenance in Brisbane

Change Number: CHG0104496

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Local Area Network
Change Title: Planned Firewall maintenance in Brisbane
Change Start Date & Time: 09/08/2025 10:00:59
Change End Date & Time: 09/08/2025 16:00:59
Outage Start Date & Time:
Outage End Date & Time:
Environment: Production
Participant Impact and Requirements: The following impacts are expected to participant connectivity during this planned outage:

IPWAN Participants - No impact is expected

Lan-2-Lan VPN Participants (IPSEC) - Up to 4 hour outage for participants who have established their VPN connection/s via the AEMO QLD datacenter termination point (202.44.76.10 for Policy Based VPN's or 202.44.76.12 for Route Based VPN) only - All L2L connections should be established to both QLD / NSW.

Note: Participants are encouraged to ensure their VPN connections are already established or are configured (as per AEMO best practice) to automatically failover to the alternate AEMO NSW datacenter termination point (202.44.78.10 or 202.44.78.12) prior to this scheduled outage. *** Failure to do so will impact connectivity to Marketnet Services ***.

B2B VPN - No impact is expected.

SSL VPN Participants: None expected as DNS entry will be updated to remove QLD IP.

GASHUB: A brief interuption of up to 60 seconds while services are failover from QLD to NSW Datacenter.

Other Impacts will have been communicated in advance.

Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities.
     
128388MARKET SYSTEMS28/07/2025 01:49:01 PM

Initial - CHG0104998 - Telco Outage Notification - Telstra Norwest Indial (02 8884 5000-5999)

Change Number: CHG0104998

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Cisco IP Phone
Change Title: Telco Outage Notification - Telstra Norwest Indial (02 8884 5000-5999)
Change Start Date & Time: 30/07/2025 00:00:00
Change End Date & Time: 30/07/2025 06:00:00
Outage Start Date & Time: 30/07/2025 00:00:00
Outage End Date & Time: 30/07/2025 06:00:00
Environment: Production
Participant Impact and Requirements: External/Market

Outage Duration:
1 x 10 minutes during the window

Impacts:
Reduced redundancy for Inbound and Outbound Calls (automatically rerouted via Brisbane).

Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities.
     
128387MARKET SYSTEMS28/07/2025 01:45:54 PM

Initial - CHG0104999 - Telco Outage Notification - Telstra Brisbane Indial (07 3347 XXXX-XXXX)

Change Number: CHG0104999

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Cisco IP Phone
Change Title: Telco Outage Notification - Telstra Brisbane Indial (07 3347 XXXX-XXXX)
Change Start Date & Time: 30/07/2025 00:00:00
Change End Date & Time: 30/07/2025 06:00:00
Outage Start Date & Time: 30/07/2025 00:00:00
Outage End Date & Time: 30/07/2025 06:00:00
Environment: Production
Participant Impact and Requirements: External/Market

Outage Duration:
1 x 10 minutes during the window

Impacts:
Reduced redundancy for Inbound and Outbound Calls (automatically rerouted via Sydney).

Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities.
     
128379INTER-REGIONAL TRANSFER27/07/2025 10:56:17 AM

Inter-regional transfer limit variation - South_East N 275kV BUS- SA region - 27/07/2025

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - South_East N 275kV BUS - SA region - 27/07/2025

A planned outage of South_East N 275kV BUS in the SA region was scheduled from 0730 hrs 23/07/2025 to 1730 hrs 27/07/2025.

The outage has been completed and South_East N 275kV BUSt returned to service at 1100 hrs 27/07/2025

Constraint set(s) revoked: S-SECB6611_10

Manager NEM Real Time Operations
     
128359POWER SYSTEM EVENTS26/07/2025 08:58:23 AM

Update - Non-credible contingency event - NSW region - 26/07/2025

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - NSW region - 26/07/2025

Refer AEMO Electricity Market Notice 128353

At 0832 hrs the Canberra A 132kV Bus was returned to service.

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 not reclassify this event as a credible contingency event.

Manager NEM Real Time Operations
     
128353POWER SYSTEM EVENTS26/07/2025 06:00:15 AM

Non-credible contingency event - NSW region - 26/07/2025

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - NSW region - 26/07/2025

At 0449 hrs the Canberra 132 kV A Bus and the Canberra to Latham A2 132 kV Line tripped.

AEMO did not instruct load shedding.

AEMO has not been advised of any disconnection of bulk electrical load.

The cause of this non credible contingency event is not known at this stage.


Manager NEM Real Time Operations
     
128317RESERVE NOTICE25/07/2025 03:07:49 PM

STPASA - Cancellation of the Forecast Lack Of Reserve Level 2 (LOR2) in the SA Region on 28/07/2025

AEMO ELECTRICITY MARKET NOTICE

The Forecast LOR2 condition in the SA region advised in AEMO Electricity Market Notice No. 128313 is cancelled at 1400 hrs 25/07/2025.

No LOR condition is currently forecast in the STPASA period.


AEMO Operations
     
128316MARKET SYSTEMS25/07/2025 02:51:14 PM

Initial - CHG0104554 - Production eMDM Maintenance Release

Change Number: CHG0104554

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: MDM - Meter Data Management
Change Title: Production eMDM Maintenance Release
Change Start Date & Time: 03/08/2025 10:00:00
Change End Date & Time: 03/08/2025 14:00:00
Outage Start Date & Time: 03/08/2025 10:00:00
Outage End Date & Time: 03/08/2025 14:00:00
Environment: Production
Participant Impact and Requirements: Users will not be able to access MSATS during the outage period.

Meter data processing and RM reports will not be available during the outage period.

User Rights Management (URM) will continue to operate, however the administration screens will not be accessible.

MSATS B2B/B2M Transactions and B2B MSATS Screens will be unavailable during this outage

NMI Discovery will not be available during the outage period.

CDR and CDP will not be available during the outage period.

Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities.
     
128313RESERVE NOTICE25/07/2025 10:27:08 AM

STPASA - Forecast Lack Of Reserve Level 2 (LOR2) in the SA Region on 28/07/2025

AEMO ELECTRICITY MARKET NOTICE

AEMO declares a Forecast LOR2 condition under clause 4.8.4(b) of the National Electricity Rules for the SA region for the following period:

From 0730 hrs to 0900 hrs 28/07/2025.
The forecast capacity reserve requirement is 563 MW.
The minimum capacity reserve available is 536 MW.

AEMO is seeking a market response.

AEMO has not yet estimated the latest time it would need to intervene through an AEMO intervention event.


AEMO Operations
     
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