Introduction

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.

Objective

The EMMS Energy Market Management System (formerly MMS); software, hardware, network and related processes. - Technical Specification - August 2023 (Release) describes the projects planned by AEMO from a participant perspective and includes any system related changes for participants.

Status

Version	Status
1.00	This technical specification is for participant review only. Please provide feedback in AEMO’s website contact us form

Release dates

Scheduled for implementation in:

Pre-production AEMO’s test system available to participants: Thursday 6 July 2023
Production AEMO’s live system: Wednesday 9 August 2023

Projects and enhancements

Changes and enhancements for this Release include:

No.	Change	Affected interface
1	Adds LOWER1SEC and RAISE1SEC fields to PMS web interface and Dispatch web interface, APIs, and FTP JSON files	Existing Markets Portal > Portfolio Management System Existing Markets Portal > EMMS > Offers & Submissions > Energy & FCAS 5min Bids

Rule and procedure changes

Project	Title	Version/status	Effective
FFR	Fast frequency response market ancillary service	Schedule 1, clauses 3.11.2, 3.15.6A, 4.8.16 Chapter 10, new definitions	27 April 2023
Schedule 2, clause 4, chapter 11	22 July 2021

Project

Title

Version/status

Effective

FFR

Fast frequency response market ancillary service

Schedule 1, clauses 3.11.2, 3.15.6A, 4.8.16

Chapter 10, new definitions

27 April 2023

Schedule 2, clause 4, chapter 11

22 July 2021

Related technical specification

Title	Description
EMMS Technical Specification - Data Model - May 2023	Explains the changes to the MMS Data Model v 5.2

Title	Description	Status
Energy & FCAS Bids on Markets Portal Help	Help using the web interface	Complete
Guide to FTP Energy, FCAS, and MNSP Bids and Offers	Help using the web interface	Complete
NEM Dispatch Bidding Open API Specification Reference	Help building the Dispatch Bidding API	Complete

Approval to change

No approval or agreement to change required from participant change controllers as this is a rule change for Fast frequency response market ancillary service rule change.

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.

Version numbers

Incremental version numbers such as 1.01, 2.01 and so on mean a draft version or a small 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 the changes detailed in this Release.

Changes in this version

Updates status and document version number.