Standalone Power Systems (SAPS) – Identifying a SAPS NMI in MSATS

09/05/2022
Market National Electricity Market
StageSecond Stage
ConvenorAEMO NEM
Initiated01/03/2022
Accepting submissions?Yes
Submissions close02/06/2022

AEMO Consultation on Standalone Power Systems (SAPS) – Identifying a SAPS NMI in MSATS

AEMO is continuing its consultation conducted on Identifying a SAPS NMI in MSATS. AEMO has published a Draft Report to consult on proposed amendments. The publication of this Draft Report marks the commencement of the second stage of consultation.

Submissions should be forwarded to AEMO by COB Thursday 2 June 2022. Further details regarding this consultation can be found in the Draft report. Please send your submissions through to NEM.Retailprocedureconsultations@aemo.com.au.

(1) Second Consultation Stage Addition
(2) First Consultation Stage Extension


AEMO commenced the first stage of the Rules consultation process on Tuesday 1 March 2022, on the most efficient way to meet the objectives for implementing the Standalone Power Systems (SAPS) Priority One Framework in the AEMO Retail Electricity Market and Settlement procedures. The consultation commenced with AEMO publishing the Issues Paper, to facilitate informed debate and feedback by industry. In the Issues Paper, AEMO indicated that:

  • Initially, AEMO must determine the appropriate IT design options to support the SAPS Framework, with a focus on the appropriate way to identify in MSATS that a NMI is connected to a SAPS. For this purpose, AEMO identified three options in the Issues Paper.
  • Subsequently, AEMO would need to consult on changes to a number of AEMO Retail Electricity Market and Settlement procedures. 

The period for submissions by stakeholders in response to the Issues Paper closed on Wednesday 6 April 2022.

AEMO convened the industry stakeholder workshop on Friday 29 April 2022 (which followed the initial workshop on 11 March 2022), to discuss the substantive issues, as well as their procedural implications in the consultation. 

The participants raised and discussed a number of issues, including the implications of the use of with Five Minute metering for SAPS connections. 

The discussions enabled the participants to align on a number of issues, which include the need for the industry to provide feedback to AEMO on proposed changes to: 

  • The following procedures, as identified by the AEMC:
    • Service Level Procedure: Metering Data Provider Services – including SAPS-related requirements for the receipt of metering data by the MDP for the generator(s) by MDPs for the load NMIs and the delivery of metering data by the MDPs. 
    • Metrology Procedure: Part A and Part B  – including requirements for MDP appointment and the calculation of SAPS generation metering data.
  • The following additional issues in various procedures:
    • Accreditation/qualification procedure for the new category of SAPS MDPs.
    • MDP appointment requirements.
    • Calculation of the total generation by the MDP i.e. who does estimation for missing NMI load data, if at all.
    • Profiling by generation MDPs.
    • MDP processes at the Market SAPS Resource Provider (MSRP) NMI, where an MDP within a SAPS fails to provide metering data to the MDP at the MSRP NMI.
    • AEMO and MDP processes at the MSRP NMI, where AEMO identifies a variance between the metering data for standard connection points within a SAPS and metering data for the generating units at the MSRP NMIs.
    • Identification and use of methodologies treat missing NMI load data data by the MDP for the SAPS generator, where the MDP does estimation for missing NMI load data.

Accordingly, AEMO confirms that: 

  • The dates in respect of the additional second consultation stage for:
    • The publication of the Second Draft Report will be 17 June 2022.
    • The close of submissions on the Second Draft Report will be 13 July 2022.
  • The dates in respect of the first consultation stage for:
    • The publication of the First Draft Report will be 18 May 2022, instead of  Monday 9 May 2022.
    • The close of submissions on the First Draft Report will be 2 June 2022, instead of Tuesday 24 May 2022.

Finally, AEMO confirms that these date changes will not impact the deadline of Monday 1 August 2022 for AEMO’s publication of the Final Report. This date of Monday 1 August 2022:

  • Aligns to key dates of Monday 1 August 2022 and Tuesday 30 May 2023 for the commencement into operation of the National Electricity Amendment (Regulated Stand-Alone Power Systems) Rule 2022.
  • Replaces the dates of:
    • Wednesday 3 August 2022, which had been discussed at the workshop on Friday 29 April 2022.
    • Tuesday 5 July 2022, which was the indicative date in the Issues Paper.

On 24th of February 2022 the Standalone Power Systems (SAPS) rule change was gazetted. AEMO has prepared this Issues Paper to facilitate informed debate and feedback by industry about the most efficient way to meet the objectives for implementing the SAPS Framework in AEMO Retail Electricity Market and Settlement procedures. AEMO has considered three options so that a participant can identify in MSATS a NMI that is connected to a SAPS and presented these in the issues paper.

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