AEPC_2024_20 Credible Contingency Events

The Consultation Process

The consultation process is outlined below. Dates are indicative only and subject to change.

Procedure Change Proposal

Wholesale Electricity Market Rules – Clause 2.10

Date of Notice: 13 December 2024

Matter under Consultation

AEMO has initiated this Procedure Change Proposal to amend the WEM Procedure: Credible Contingency Events to clarify elements of the Procedure and improve alignment with the WEM Rules. The proposed amendments include:

• Clarifying the application of the Credible Contingency Event framework for the potential loss of a node created by a substation busbar.
• Redrafting provisions to better align with the WEM Rules, including the description of Credible Contingency Events under clause 3.8A.2 and Non-Credible Contingency Events under clause 3.8A.3.
• Undertaking minor editorial and typographical changes to improve readability and clarity, including new definitions for specific Power System Elements, redrafting provisions relating to information requests, and updating parts of Appendix B.
• Moving the Procedure to the updated AEMO WEM Procedure template.

Invitation to Make Submissions

AEMO invites written submissions on this Procedure Change Proposal, including any alternative or additional proposals you consider may improve the procedure or better meet the Wholesale Market Objectives in section 122(2) of the Electricity Industry Act 2004 (and clause 1.2.1 of the WEM Rules).

Please identify any parts of your submission that you wish to remain confidential, and explain why. AEMO may still publish that information if it does not consider it to be confidential, but will consult with you before doing so.

When making a claim for confidentiality, AEMO encourages respondents to familiarise themselves with Chapter 10 of the Wholesale Electricity Market Rules, which imposes obligations in respect to the release of documents.

Meetings

Before the closing date for submissions, you may request a meeting with AEMO to discuss the issues and proposed changes raised in the Procedure Change Proposal, stating why you consider a meeting is necessary or desirable.

If appropriate, meetings may be held jointly with other stakeholders. Subject to confidentiality restrictions, AEMO will generally make details of matters discussed at a meeting available to other stakeholders, and may publish those details.

Closing Date and Time

Submissions in response to this Procedure Change Proposal should be sent by email to WA.Marketdevelopment@aemo.com.au, to reach AEMO by 5.00 pm (AWST) on 24 January 2025.

All submissions must be in electronic format (pdf or Microsoft Word). Submissions should use the Procedure Change Submission form available on this page:

https://aemo.com.au/energy-systems/electricity/wholesale-electricity-market-wem/procedures-policies-and-guides/procedures/procedure-changes-process

AEMO is not obliged to consider submissions received after the closing date and time. Any late submissions should explain the reason for delay and the detriment to you if AEMO does not consider your submission.

Publication

All submissions will be published on AEMO’s website. Confidential information will not be published, other than as specified above.