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.

1.2 Objective

The EMMS Energy Market Management System (formerly MMS); software, hardware, network and related processes. - Technical Specification - Data Model The definition of the interface to participants of data published by AEMO for gas or electricity. A database conforming to the Data Model can contain a local copy of all current participant-specific data recorded in the main database. The Data Model includes database tables, indexes, and primary keys. v5.4 - November 2024 (Release) describes the projects planned by AEMO from a participant perspective and includes any system related changes for participants.

1.3 Status

Version	Status
2.00	Final. The Data Model is available in Production.
1.04	The data model design is 99.9% complete. No further changes are planned, however there may be some minor changes due to certification and testing which is currently in progress. Frequency Performance Payments: Design complete estimation – 99.9%
1.03	The data model design is 99.9% complete. No further changes are planned, however there may be some minor changes due to certification and testing which is currently in progress. Frequency Performance Payments: Design complete estimation – 99.9%
1.02	The design is in progress. Not ready for participants’ builds. Frequency Performance Payments: Design complete estimation - 95%
1.01	The design is in progress. Not ready for participants’ builds. Frequency Performance Payments: Design complete estimation - 95% Forecasting: Design complete estimation - 100%
1.00	The design is in progress. Not ready for participants’ builds. Frequency Performance Payments: Design complete estimation - 95% Forecasting: Design complete estimation - 100%
0.01	Initial Draft for participants review. The design is not ready for participants’ builds Presents the EMMS - Technical Specification - Data Model v5.4 - November 2024 evolving design. Please send feedback to techwriters@aemo.com.au Frequency Performance Payments: Design complete estimation - 80% Forecasting: Design complete estimation - 80%

1.4 Release dates

Scheduled for implementation in:

Pre-production AEMO’s test system available to participants: Wednesday 9 October 2024
Production AEMO’s live system: Wednesday 6 November 2024

1.5 Projects and enhancements

Changes and enhancements for this Release include:

Functionality	Change	Affected interface	Reference
FPP	New data model reports	File interface	Data Model
Existing tables	Modifies existing DISPATCH, DEMAND_FORECASTS and PARTICIPANT_REGISTRATION tables.	File interface	Data Model

Functionality

Change

Affected interface

Reference

FPP

New data model reports

File interface

Data Model

Existing tables

Modifies existing DISPATCH, DEMAND_FORECASTS and PARTICIPANT_REGISTRATION tables.

File interface

Data Model

1.5.1 Frequency Performance Payments (FPP)

Introduces a new system of incentives and penalties for generators and scheduled generators. Generators See Relevant Rules or Procedures will either receive or be liable for payments. Incentives and penalties are based on whether they are helpful or unhelpful to system frequency.

See Data Population Dates.

1.6 Rule and procedure changes

Title		Project		Status		Effective
Primary Frequency Response Incentives rule change	Frequency Performance Payment		In progress		8 June 2025
Frequency Contribution Factors Procedure	Frequency Performance Payment		Final report		1 June 2023

1.7 Related technical specifications

None.

1.8 Related documents

These guides and resources are updated according to this technical specification and published by the dates below.

Title	Description	Published
Data Interchange Online Help	Help for participants using Data Interchange and the Data Model	See DM pre-production and production dates in Timeline.
Data Model Reports	Explains the packages, tables and reports in the Electricity and Gas Data Models
Release Documents	Release Notes

1.9 Approval to change

No further changes.

1.10 Market systems user group 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.

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.

1.11 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 below.

1.12 Changes in this version

The changes in this version are:

Data Model v5.4 is now available in Production.