Next steps in two big market changes (in terms of transparency)

Worth a short note today (Friday 27th June 2025) to note the publication of MN127877 – which references (Change Number: CHG0103089 with respect to) two market changes that will improve market transparency for all types of participants:

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MARKET NOTICE
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From :              AEMO
To   :              NEMITWEB1
Creation Date :     27/06/2025     09:08:43

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Notice ID               :         127877
Notice Type ID          :         MARKET SYSTEMS
Notice Type Description :         Status of Market Systems
Issue Date              :         27/06/2025
External Reference      :         CHG0103089 – ERI & STPASA Recall Period Production Release

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Reason :

Change Number: CHG0103089

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: EMMS – Dispatch
Change Title: ERI & STPASA Recall Period Production Release
Change Start Date & Time: 30/06/2025 09:00:00
Change End Date & Time: 04/07/2025 18:00:00
Outage Start Date & Time: 30/06/2025 11:45:00
Outage End Date & Time: 30/06/2025 11:55:00
Environment: Production
Participant Impact and Requirements: Under this change, AEMO will upgrade the NEMDE solver used in Production for Dispatch, 5-Minute Predispatch, Predispatch and PD7 to a new version. AEMO will also upgrade other relevant applications for Dispatch, 5-Minute Predispatch, Predispatch, PD7, Bidding, SOMMS and?Registration. This change will become effective upon rule commencement on 1 July, 2025

Impact : A Planned outage for BIDDING application is scheduled on 30th June 2025 between 11:45 AM and 11:55 AM. The application will be unavailable for approximately 5-7 min during this window.

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.

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END OF REPORT
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With respect to these two changes:

• We’ve already prepared and released ez2view v9.12 for the ST PASA changes;
• But our chosen approach with the ERI changes is to wait until we see real data (and real market situations) before adding this data into certain widgets.