AEPC_2025_07 Identification of Affected Dispatch Intervals

The consultation process

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

Procedure change proposal

Electricity System and Market Rules – Clause 2.10

Date of Notice: 16 May 2025

Matter under consultation

The purpose of this Procedure Change Proposal is to align the WEM Procedure: Identification of Affected Dispatch Intervals to changes made to the ESM Rules, as a result of the Wholesale Electricity Market Amendment (Miscellaneous Amendments No 3).

The WEM Procedure has been amended to include:

• the conditions or circumstances that would require AEMO to determine a replacement Market Schedule under clause 7.11B.1B(bA) [clause 7.11C.1(b)]; and
• the process AEMO must follow to determine a replacement Market Schedule under clause 7.11B.1B(bA) [clause 7.11C.1(c)].

In addition to the above changes, AEMO has also taken the opportunity to:

• make amendments to the WEM Procedure to more accurately reflect the conditions or circumstances which may identify and result in an Affected Dispatch Interval; and
• replace all references to the WEM Rules and WEM Regulations to ESM Rules and ESM Regulations (as applicable) to be consistent with naming conventions as of February 2025.

On 6 February 2025 the State Electricity Objective (SEO) replaced the Wholesale Market Objectives under section 3A of the Electricity Industry Act 2004.  Following an assessment, AEMO considers the Procedure is consistent with the SEO.

Invitation to make submissions

AEMO invited written submissions on this Procedure Change Proposal, including any alternative or additional proposals that may improve the Procedure or better meet the State Electricity Objective under section 3A of the Electricity Industry Act 2004.

AEMO requested that respondents identify any parts of their submission that they wished to remain confidential, explaining why. AEMO advised that it may still publish that information if it does not consider it to be confidential, but will consult with the respondent before doing so.

When making a claim for confidentiality, AEMO encouraged respondents to familiarise themselves with Chapter 10 of the Electricity System and Market Rules (ESM Rules), which imposes obligations in respect to the release of documents.

Meetings

AEMO advised that, before the closing date for submissions, any person may request a meeting with AEMO to discuss the issues and proposed changes raised in the Procedure Change Proposal, stating why they consider a meeting is necessary or desirable.

If appropriate, meetings may be held jointly with other stakeholders.

Subject to confidentiality restrictions, AEMO generally makes details of matters discussed at meetings available to other stakeholders as part of the final published Procedure Change Report (or earlier, where applicable).

Closing date and time

AEMO advised that submissions in response to this Procedure Change Proposal should be sent by email to [email protected], to reach AEMO by 5.00 pm (AWST) on 16 June 2025.

All submissions must be in electronic format (pdf or Microsoft Word) and should use the Procedure Change Submission form.

AEMO advised that it is not obliged to consider submissions received after the closing date and time, and that any late submissions should explain the reason for delay and the detriment expected if AEMO does not consider the late submission.

Publication

AEMO advised that all submissions will be published on AEMO’s website, and that confidential information will not be published, other than as specified above.