1 Introduction

1.1 Audience

AEMO Australian Energy Market Operator provides this information as a service targeting business analysts and IT staff in Registered Participant See Relevant Rules or Procedures companies.

The primary audience for this technical specification is B2B Business-to-Business. Generic term used to refer to defined business-to-business interactions between participants; excludes interactions between a participant and market systems such as MSATS. and B2M Business-to-Market Retail Market Participants.

1.2 Objective

The MSATS Market Settlement and Transfer Solutions. The procedures published by AEMO under clause 7.2.8 of the National Electricity Rules, which include those governing the recording of financial responsibility for energy flows at a connection point, the transfer of that responsibility between market participants, and the recording of energy flows at a connection point. - Technical Specification - October 2025 (Release) describes the projects planned by AEMO from a participant perspective and includes any system related changes for participants.

1.3 Status

Version

Status

1.03

In progress. The design is not ready for participants’ builds.

1.02

In progress. The design is not ready for participants’ builds.

1.01

In progress. The design is not ready for participants’ builds.

1.00

In progress. The design is not ready for participants’ builds.

0.03

Initial draft for review. The design is not ready for participants’ builds.

Presents the MSATS - Technical Specification - October 2025 evolving design. Please send feedback to Contact Us. In the Details of your enquiry section, mention the DCC Knowledge Management team as the Resolver group.

 

1.4 Release dates

Scheduled for implementation in:

1.5 Projects and enhancements

Changes and enhancements for this Release include:

Project

Description

Type

MSR Package 1

Procedural and technical changes for the Retail market which includes:

  • Accelerated LMRP

  • Site Defects

Project

Embedded Network Settlement Anomalies

CATS Change Requests restricted from updating embedded network child NMI datastreams retrospectively

Project

ROLR Retailer of Last Resort. A scheme principally designed to ensure that in the event of retailer failure, arrangements are in place to ensure customers continue to receive electricity and/or gas supply. reporting

Discontinue obsolete ROLR reports

ROLR report delivery to the Participant File Server

Enhancement

ICF_077

Last Consumer Change Date (LCCD) auto populated in MSATS based on NMI status

Enhancement

ICF_078

Update NEM address element definitions as a result of B2M Procedures aligning with AS4590.1:2017 standard

Enhancement

IEC - B004/22

Update B2B field lengths according to B2B Procedures aligning with AS4590.1:2017 standard

Enhancement

IEC - B002/22

Address inconsistencies field, field lengths and associated enumerations in the B2M and B2B procedures and schemas

Enhancement

MSR Package 2

Meter Exemption changes to support new metering testing and inspection requirements

Project

1.6 Forums and meetings

1.6.1 MSUG meetings

The Market Systems User Group (MSUG Market Systems User Group) is an industry user group established to discuss NEM wholesale and retail IT systems releases. Its purpose is to facilitate the continuing improvement of AEMO's IT systems by seeking feedback and collaboration from participants.

It is open to all interested parties, with invitations sent to all Registered Participants Energy Rules Terms If you have a technical question for a project and want to attend the MSUG, so you get an invite, ask your company’s support team to include your email address in their AEMO Help Desk Bulletin (CRM).

1.6.2 NEM Reform program stakeholder engagement

Details about the NEM Reform Forums, Working Groups, and related AEMO forums: NEM Reform Stakeholder Engagement.

1.6.3 Electricity Retail Consultative Forum

The Electricity Retail Consultative Forum (ERCF) provides a platform for participants operating in the NEM to participate in the enhancement of the Retail Electricity Market Procedures The number of procedures that govern the operation of the retail market. Framework (except B2B Procedures The documents that comprise the B2B Procedures prescribing the content of, the processes for, and the information to be provided to support B2B communication.).

1.7 Rule and procedure changes

Title

Status

Effective

B2B Procedures v3.9 Consultation

Final

1 December 2025

B2B Procedure: Technical Delivery Specification v3.9

Final

1 December 2025

B2B Procedure: Service Order Process v3.9

Final

1 December 2025

B2B Procedure One Way Notification Process v3.9

Final

1 December 2025

B2B Procedure Meter Data Process v3.9

Final

1 December 2025

B2B Procedure Customer and Site Details Notification Process v3.9

 

Final

1 December 2025

MSATS Procedures - Principles and Obligations for All Connection Points v7.1

Final

1 December 2025

Standing Data for MSATS v6.1

Draft

1 December 2025

National Electricity Amendment (Accelerating smart meter deployment) Rule 2024

Final

28 November 2024

Exemption Procedure Meter Installation Malfunctions v2.0

Amendment

1 December 2025

Metrology Procedure Part C v1.0  

Draft

1 December 2025

National Electricity Amendment (Unlocking CER benefits through flexible trading) Rule 2024

Final

15 August 2024

1.8 Related technical specifications

None

1.9 Related software

Software

Change

Available

B2B Validation Module

See B2B Validation Module

Pre-production:
Tuesday 2 September 2025

Production:
Sunday 26 October 2025

MSATS Participant Batcher

New version updated for aseXML schema r46

1.10 Related documents

These guides and resources are updated according to this technical specification and published for the pre-production Release Date.

Title

Description

Status

aseXML r46 schema release

aseXML r46 schema files

Final

B2B Mapping to aseXML

Describes the mapping between the MSATS B2B procedures and the B2B aseXML schema

Not started

B2M Mapping to aseXML

Describes the mapping between the MSATS B2M procedures and the B2M aseXML schema

Not started

Guide to MSATS B2B

Information about the B2B e-Hub functions available in the Market Settlement and Transfer System (MSATS)

Not started

Guide to MSATS Reports

Information about MSATS C1, C4, C7, and Snapshot reports

Not started

Guide to MSATS Web Portal

Information about the B2M functions available in the Market Settlement and Transfer System (MSATS) web portal

Not started

API portal

Blind Update API and Meter Exemptions API changes

Not started

Guide to Metering Exemptions

Information about submitting and managing metering exemptions in the MSATS web portal

Not started

1.11 Approval to change

AEMO is seeking Participant feedback from the Electricity Retail Consultative Forum (ERCF Electricity Retail Consultative Forum), B2B Working Group, and interested parties.

1.12 Market systems user group meetings

The Market Systems User Group (MSUG) is an industry user group established to discuss NEM wholesale and retail IT systems releases. Its purpose is to facilitate the continuing improvement of AEMO's IT systems by seeking feedback and collaboration from participants.

MSUG meetings are open to all interested parties, with invitations sent to all included on the distribution list. If you have a technical question for a project and want to attend the MSUG ask your company’s support team to include your email address in their AEMO Help Desk Bulletin (CRM) distribution list.

1.13 Version numbers

Incremental version numbers such as 1.01, 2.01 and so on mean there is a minor change to the technical specification.

Major version numbers such as 1.00, 2.00 means there are substantial changes to the technical specification. Participants must carefully review these changes, detailed Page 1.

1.14 Changes in this version

This version includes the following changes: