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Procedures Workstream


AEMO has completed the necessary procedural changes that are required to give effect to the Five-Minute Settlement (5MS) and Global Settlement (GS) rule changes.

AEMO consulted on the changes to the procedures as required by the National Electricity Rules (NER). In addition, AEMO carried out industry engagement throughout the development process to help identify any potential areas of concern or contention, as well as identify areas of opportunity to improve outcomes.

Packages and Stakeholder Consultation

AEMO identified approximately 70 procedures, policies and guides that are affected by the 5MS Rule across four functional areas. These procedures were grouped into packages for consultation. The packages are outlined in the table below.

The procedures included in each package, their High-Level Impact Assessments and the consultation history can be found through the links.





  1. Metering data
  2. MSATS and SLPs
  3. Miscellaneous
  1. SRA 
  2. Estimation 
  3. Miscellaneous 
  4. TNSP
  5. Prudentials 
  6. Reallocations                
  1. Bids/offers 
  2. Pricing
  3. Spot Market
  4. Miscellaneous

No packages, but one procedure required for formal consultation.           

Procedure Working Group (PWG)

AEMO established the Procedures Working Group to provide a forum to engage with industry stakeholders during the procedure development process. Information on the working group is available here

As the procedure workstream is now complete, the PWG has been closed. Stakeholders can still raise changes to the procedures through the AEMO business-as-usual channels as shown in the table.

Area Channel
 Metering / metering data / standing data

 Electricity Retail Consultative Forum (ERCF)

 Information Exchange Committee

 Settlements  email: settlements@aemo.com.au
 Prudentials  email: prudentials@aemo.com.au

 NEM Wholesale Consultative Forum
 email: nemwcf@aemo.com.au

The benefit of this approach, especially for metering, is that AEMO coordinates across all other industry projects and changes: 

  • Consults with the industry via the relevant forum or working group
  • Establishes the optimal approach to bundling procedure changes and IT changes
  • Considers all timelines, including statutory and project milestones.

The 5MS Program will track any relevant issues or changes through an action log to ensure transparency, consistency and integration. 

The 5MS Procedures Working Group may be reactivated on an ad-hoc basis to respond to material procedure issues. 

For further information

Please direct any queries regarding Five-Minute Settlement (5MS) to 5ms@aemo.com.au.

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