Transitional Registration Process


As part of WEM Reform there were changes to the registration and participant framework, which:

  • facilitated the participation of new technologies and configurations in the WEM; and
  • allowed provision of more granular registration information to support scheduling and dispatch.

For all existing Rule Participants to continue their participation in WEM, they were required to submit new registration applications to provide data required for the new market. The information required from existing Rule Participants and candidate Rule Participants to ensure they met their transitional registration requirements to be ready for new WEM commencement is outlined below.

What did participants need to do?

Participants were required to review the sections below in relation to Transitional registration:

  1. Registration Schedule - to be aware of when application submission deadlines were.
  2. Facility Migration List - to ensure all Facilities were migrated to the appropriate Facility Class for the new market.
  3. Excel applications forms - to gain provisional approval of Facility data prior to the deployment of the new registration system in WEMS MPI.
  4. Other registration forms - to submit other registration forms for the new market (e.g. Facility Aggregation/ Disaggregation, Facility Class reassessment Forms, and NDL association form for Interruptible Loads).

Registration Schedule

AEMO published a Registration Schedule which outlined relevant events and submission deadlines for registration applications. Rule Participants were strongly encouraged to review the Registration Schedule which was available on the website.

AEMO encouraged applicants to submit their applications as early as practicable to ensure there was adequate time for AEMO to review the information and ensure it was complete and accurate for participation in the processes under the new market.

Facility Migration List

Furthermore, AEMO strongly encourages Rule Participants to review the following Facility Migration List which outlines the respective Facility Class that each existing Registered Facility and candidate Facility will be migrated to for the new market, in accordance with clause 1.47.3.

In particular, only candidate Facilities which have an Indicative Facility Class and have submitted for the upcoming Reserve Capacity Cycle have been migrated.

If your candidate Facility is not on the list and you intend for it participate in the new market or if there are any omissions or inaccuracies, please notify AEMO by 29 May 2023 by emailing

Excel applications forms for provisional approval

To assist AEMO in processing the high quantity of applications prior to the new market and before the new Registration system was available, AEMO made the following Excel application forms available on Reformer to allow Rule Participants to gain provisional approval from AEMO:

  • Facility General Information
  • Facility Standing Data for all Facility Classes/Types including Intermittent Load and Interruptible Loads
  • Facility Technology Type
  • Separately Certified Components (if the Facility is a Scheduled Facility or Semi-Scheduled Facility and certified for Reserve Capacity)

The Excel application forms are available on the left . The set of forms (mentioned above) for each Facility Class were available in the folder as tabs in the forms listed below:

  1. Scheduled Facility - Facility Registration
  2. Semi- Scheduled Facility - Facility Registration
  3. Non-Scheduled Facility - Facility Registration
  4. Non-Dispatchable Load - Facility Registration
  5. Demand Side Programme - Facility Registration
  6. Network - Facility Registration
  7. Interruptible Loads - Facility Registration

The updated Registration Technical Guide is also available on the left and provides field definitions and specifications for the application forms.

Rule Participants were not required to use the Excel application forms and could choose to submit via the online Registration (SCED) interface in WEMS MPI from the week commencing 3 July 2023, however the Excel forms provided a mechanism to get earlier provisional approval from AEMO.

Instructions on how to submit the applications are contained in the form.

Other registration forms

The following Excel application forms were available:

  • Facility Aggregation/ Disaggregation
  • Facility Class reassessment - Transitional Period
  • NDL association form for Interruptible Loads

Instructions on how to submit the applications are contained in the form.

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