Update to Constraint Violation Penalty (CVP) Factors – effective 19th September 2025

Apologies to readers for what might seem (at least to some) a pretty cryptic article referencing AEMO’s MN129117 published Tuesday 16th September 2025 with respect to this Friday 19th September 2025:

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MARKET NOTICE
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From : AEMO
To : NEMITWEB1
Creation Date : 16/09/2025 16:25:38

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Notice ID : 129117
Notice Type ID : MARKET SYSTEMS
Notice Type Description : Status of Market Systems
Issue Date : 16/09/2025
External Reference : Initial – CHG0106468 – Update to Constraint Violation Penalty (CVP) Factors ? Effective 19 Sep 2025

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Reason :

Change Number: CHG0106468

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: EMMS – Dispatch
Change Title: Update to Constraint Violation Penalty (CVP) Factors ? Effective 19 Sep 2025
Change Start Date & Time: 18/09/2025 08:00:00
Change End Date & Time: 19/09/2025 15:00:00
Outage Start Date & Time:
Outage End Date & Time:
Environment: Production
Participant Impact and Requirements: The following changes to Constraint Violation Penalty (CVP) Factors will be implemented in PRODUCTION:

? Added Minimum System Load (MSL) constraint and a new CVP of 3.
– This change reflects the new MSL constraint CVP in production.

? Updated Profiled Max/Min Energy Limit constraint CVPs.
– This change is to manage potential conflict between the bid MaxAvail constraint and the profiled energy limit constraint. The functional change in the system was implemented under the ERI project.

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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Nothing more, at this point.