Technical Specification Roadmap

The information on this page is tentative and the dates are subject to change.

Item

Tentative date

Project

MSUG

17 December 2025

  • Improving Security Frameworks (ISF)

  • Basic Power Quality Data (BPQD)

  • Portfolio Management System (PMS)

  • Generation Information Survey Enhancement (GISE)

  • Metering Services Review (MSR)

  • Flexible Trading Arrangements

  • Gas Supply Hub (GSH)

  • Gas Bulletin Board (GBB)

  • Shortening the Settlement Cycle (SSC)

  • NEMWeb site upgrade

EMMS wholesale pre-production refresh

13 April 2026 - 17 April 2026 (TBC)

  • (TBC)

MSATS retail pre-production refresh

7 April 2026 - 10 April 2026

  • Flexible Trading Arrangements (FTA)

MSATS

Pre-production: 2 September 2025, 30 September 2025

Production: 26 October 2025, - Sunday 30 November 2025

For details, see Release dates

  • Metering Services Review

EMMS - Technical Specification - Data Model v5.6 - November 2025

Pre-production: 14 October 2025

Production: 19 November 2025

  • Frequency Performance Payments (FPP) Settlements

  • Improving Security Frameworks (ISF)

  • Inverter Management System

  • Operational Forecasting

  • ST PASA Procedure and Recall Period

     

Data Model 5.7

Pre-production: 5 May 2026 (TBC)

Production: 2 June 2026 (TBC)

  • Cash Security

  • Improving Security Frameworks (ISF)

  • Project Energy Connect - Market Integration (PEC-MI)

  • Shortening the Settlements Cycle (SSC)

  • ST PASA Replacement

Gas Data Model 2.2.2

Pre-production: 14 October 2025

Production: 19 November 2025

  • Gas Supply Hub (GSH)

  • Gas Bulletin Board (GBB)

NEM retail aseXML schema releases

Project

Schema deployment date

aseXML schema changes

B2M

B2B

B2M n-1

B2B n-1

Industry test

Flexible Trading Arrangements (FTA) Release 1 - Type 9 metering

31 May 2026

Non-versioned enumeration file

r46

r46

r44

r43

20 April - 31 May 2026

Shortening the Settlement Cycle (SSC)

9 August 2026

  • SSC B2M schema changes for RREV0

  • FTA B2M schema new attributes (IsPCPPremisesNMI)

r47

r46

r46

r43

8 June - 7 August 2026

FTA Release 2 - Flexible trading

1 November 2026

  • SSC B2M schema changes for RREV0

r47

r48

r46

r46

7 September - 30 October 2026