Change Number: CHG0090790

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: Gas FRC - CATS

Change Title: Maintenance activities to be performed on the Gas Full Retail Contestability (VIC/QLD) Market systems Production

Change Start Date & Time: 30/06/2024 09:00:00 AEST

Change End Date & Time: 30/06/2024 17:00:00 AEST

Outage Start Date & Time: 30/06/2024 10:00:00 AEST

Outage End Date & Time: 30/06/2024 14:00:00 AEST

Environment: Production

Participant Impact and Requirements: The following impacts are expected during this maintenance:

- All access to the VIC & QLD RETAIL GFRC Production Systems will be unavailable.

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 .

Change Number: CHG0090805

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: Identity Service (IDS)

Change Title: Identity Service Site Transfer

Change Start Date & Time: 25/06/2024 12:01:26 AEST

Change End Date & Time: 26/06/2024 17:01:35 AEST

Outage Start Date & Time: 25/06/2024 13:05:00 AEST

Outage End Date & Time: 25/06/2024 13:15:00 AEST

Environment: Production

Participant Impact and Requirements: Identity Service is used by multiple systems for user authorisation and authentication.

Identity Service is mostly used by the following systems:

*MSATS
*APIs (EMMS, GBB, MSATS)
*WEM
*Internal / Markets Portal Services

Identity Service might have an intermittemt outage between 13:05 to 13:15 AEST and during this outage period few users might face login issues.

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?d=pp_services_status for any planned/unplanned maintenance activities .

Change Number: CHG0090802

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: Electricity Market Management System

Change Title: EMMS Production Systems will be transferred to the alternative
datacentre for maintenance activities .

Change Start Date & Time: 24/06/2024 08:00:00 AEST

Change End Date & Time: 26/06/2024 17:30:00 AEST

Outage Start Date & Time: 25/06/2024 13:25:00 AEST

Outage End Date & Time: 25/06/2024 13:30:00 AEST

Environment: Production

Participant Impact and Requirements: The maintenance activity is not expected to have any impact however delays to Dispatch cycles, bid submission, and outage to the AEMO Markets Portal are possible during the outage window on Tuesday 25th June around 13:25 to 13:30 AEST.CDR 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?d=pp_services_status for any planned/unplanned maintenance activities .

AEMO ELECTRICITY MARKET NOTICE

Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 19/06/2024

Refer Market Notice 117076

The AEMO Intervention Event and all associated directions are cancelled from 1300 hrs 20/06/2024

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Direction - SA region 19/06/2024

In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the SA region. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a).

The direction was necessary to maintain the power system in a secure operating state.

AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided. A further market notice will be issued when all directions related to this requirement have been cancelled.

The issue of the direction commences an AEMO intervention event. AEMO declares all trading intervals during the event to be intervention trading intervals, commencing from the interval ending 1650 hrs on 19/06/2024.

Intervention pricing does not apply to this AEMO intervention event.

Manager NEM Real Time Operations

Change Number: CHG0090808

Notification issued to: Market Notice

Notification Type: Cancelled

Change Type: Normal

Service/ Component: Short Term Trading Market

Change Title: CANCELLED - Planned Outage for the Gas Short Term Trading Market Systems Production

Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600

Change Number: CHG0090631

Notification issued to: Market Notice

Notification Type: Completed

Change Type: Normal

Service/Component: Internet Access

Change Title: Planned Maintenance to Norwest Internet firewall.

Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.

Change Number: CHG0090631

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: Internet Access

Change Title: Planned Maintenance to Norwest Internet firewall.

Change Start Date & Time: 18/06/2024 20:00:49 AEST

Change End Date & Time: 18/06/2024 23:30:49 AEST

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 - Nil

Lan-2-Lan VPN Participants (IPSEC) - Nil

B2B VPN - May experience a short 5-10 second drop of VPN tunnel connectivity to Norwest DC.

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 QLD datacenter termination point prior to this scheduled outage.

SSL VPN Participants: Nil

GASHUB: Nil

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 .

AEMO ELECTRICITY MARKET NOTICE

Update - Possible intervention to manage power system security in SA region

Refer AEMO Electricity Market Notice 117061

The synchronous generating units currently expected to be synchronised in SA from 0100 hrs 20/06/2024 will be inadequate to maintain a secure operating state in SA .

AEMO estimates that, in the absence of sufficient market response by 1600 hrs 19/06/2024, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.

Manager NEM Real Time Operations