IT change and release management

This page lists schedules for IT changes and releases across AEMO’s electricity and gas market systems. All change management is governed under the IT Change Management Policy and Procedure.

IT changes

AEMO’s IT change schedule informs AEMO participants in advance about IT changes and provides a consolidated view of the changes planned. This is another step towards standardising the maintenance and outage windows for AEMO’s market-facing systems, helping to better manage any impact as well as overall planning of changes and releases.

Forward schedule of IT changes

The fortnightly forward schedule of IT changes lists all planned maintenance, as well as the status history of each of AEMO’s business services.

Visit Service now

Outage and maintenance windows

The IT outage and maintenance windows (change windows) for major system changes outline specific timeframes when IT changes will occur.

15/07/2016
AEMO change windows
An overview of the designated change windows for each of AEMO’s market systems.
170.59 KB

Release schedules

Release schedules for AEMO markets and systems.

National Electricity Market (NEM)

Wholesale Electricity Market (WEM)

Environments

The table below details the Wholesale Energy Market System (WEMS) release and build that is currently running in each environment. The snapshot date indicates the date at which the last snapshot of live market data was taken for the environment, as applicable.

Environment	Version	Snapshot date	Link
Live	WEMS 3.36 (Build 3.36-1529-2); RCM 1.16 (Build 1.16-2984-1); Prudential 1.4 (Build 1.4-780-3)		https://wems.aemo.com.au/
Trial	WEMS 3.36 (Build 3.36-1529-2); RCM 1.16 (Build 1.16-2984-1); Prudential 1.4 (Build 1.4-780-3)	7 June 2020	https://wems-mkt.aemo.com.au/

Trial environments can simulate the operation of the WEM, but actual market outcomes may vary in these environments due to testing activities of Market Participants and AEMO, differences in software versions, and the time since the last snapshot.

Gas markets and systems

Gas Bulletin Board (GBB)
WA Gas Bulletin Board (WA GBB)
Release notes
Declared Wholesale Gas Market (DWGM)

No current releases.
Short Term Trading Market (STTM)
- 09/02/2017
  STTM release schedule – March 2017
  792.55 KB
- 09/02/2017
  STTM technical specification – March 2017
  731.3 KB
Gas Supply Hub (GSH)
- 08/12/2017
  EMMS release schedule – December 2017
  803.82 KB
- 08/12/2017
  EMMS technical specification – December 2017
  1.68 MB
Pipeline Capacity Trading (PCT)
- 21/05/2019
  GSH release schedule and technical specification – Pipeline Capacity Trading – March 2019
  1.16 MB
Gas Full Retail Contestability (FRC)
- 28/11/2016
  Gas FRC release schedule and technical specifications
  661.88 KB
Gas Day Harmonisation

IT change and release management

IT changes

Forward schedule of IT changes

Outage and maintenance windows

AEMO change windows

Release schedules

National Electricity Market (NEM)

Market Settlement and Transfer Solution (MSATS)

MSATS Release Schedule and Technical Specification - 5MS - Meter Data v3

Energy Market Management System (EMMS)

EMMS Release Schedule - Data Interchange - October 2020

EMMS Technical Specification - 5MS - Data Model v5.00

EMMS Technical Specification - 5MS - Dispatch and Operations

EMMS Technical Specification - 5MS - Settlements v4.02

EMMS Technical Specification - 5MS - Prudentials

EMMS Release Schedule - Data Interchange - February 2020

EMMS Technical Specification 5MS Reallocations December 2019

Draft EMMS release schedule and technical specification – 5MS reallocations

EMMS release schedule and technical specification – SRA – October 2019

EMMS Release Schedule - August 2018 - Market Participant Self Forecast

Wholesale Electricity Market (WEM)

Environments

Releases (2021-2020)

WEMS 336 Release Notes

Prudential Services 1-4 Release Notes

WEMS 3.35 (Build 3.35-1513-3) Prudential Service 1.3 (Build 1.3-735-2)

WEMS 3.35 (Build 3.35-1513-2); RCM 1.15 (Build 1.15-2980-1)

WEMS 3.34 (Build 3.34-1509-1); RCM 1.14 (Build 1.14-2979-1)

Releases (2019-2018)

RCM 1.8-2765

WEMS 3.24 (Build 3.24-1356): RCM 1.5-2570

WEMS 3.25 (Build 3.25-1379): RCM 1.6-2679

WEMS 3.26 (Build 3.26 - 1397-1): RCM 1.7-2714

WEMS 3.27 (Build 3.27-1410-1): RCM 1.9-2787-2

WEMS 3.27 (Build 3.27-1410-1): RCM 1.9-2787-2

WEMS 3.28 (Build 3.28-1438-2): RCM 1.10-2871-6

WEMS 3.28 (Build 3.28-1438-2): RCM 1.10-2871-6

WEMS 3.29 (Build 3.29-1457-2)

WEMS 3.30 (Build 3.30-1459-26); RCM 1.11 (Build 1.11-2970-14)

WEMS 3.31 (Build-3.31-1478-2)

WEM)S 3.32 (Build 3.32-1480-1); RCM 1.12 (Build 1.12-2974-1

WEMS 3.33 (Build 3.33-1497-3); RCM 1.13 (Build 1.13-2976-2)

Releases (2017-2016)

WEMS 3.23 (Build 3.23-1336-1): RCM 1.4-2366-6

WEMS 3.22 (Build 3.22-1297-5): RCM 1.3-2272-1

WEMS 3.22 (Build 3.22-1297-5): RCM 1.2-2176-5

WEMS 3.21 (Build 3.21-1236-24): RCM 1.1-2098-8

WEMS 3.21 (Build 3.21-1236-22)

WEMS 3.19 Patch 1 (Build 3.19-1192-13)

WEMS 3.19 (Build 3.19-1192-10)

WEMS 3.18 (Build 3.18-1183-5)

WEMS 3.17 (Build 3.17-1149-11)

WEMS 3.16 (Build 3.16-1105-2)

WEMS 3.14 (Build 3.14-1016-3)

WEMS 3.13.1 (Build 3.13.1-981-6)

Releases (2015-2014)

WEMS 3.13 (Build 3.13-981-1)

WEMS 3.12 Patch 1 (Build 3.12-913-35)

WEMS 3.12 (Build 3.12-913-9)

WEMS 3.11 Patch 4 (Build 3.11-374-128)

WEMS 3.11 Patch 3 (Build 3.11-374-116)

WEMS 3.11 Patch 2 (Build 3.11-374-93)

WEMS 3.11 Patch 1 (Build 3.11-374-81)

WEMS 3.11 (Build 3.11-374-63)

WEMS 3.10 Patch 2 (Build 3.10-99-63)

WEMS 3.10 Patch 1 (Build 3.10.1)

Gas markets and systems

Gas Bulletin Board (GBB)

GBB – Release FAQ – September 2018

GBB data model QRG

GBB release schedule and technical specification – September 2018

GBB release schedule and technical specification – 938A – October 2016

WA Gas Bulletin Board (WA GBB)

Release notes

GBB 1.15 Release Notes

GBB 1.15 Release Notes

GBB 1.13 Release Notes

GBB 1.12 Release Notes

GBB 1.11 Release Notes

GBB 1.10 Release Notes