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STTM IIR 14-003 Addition of Hexham CTP and MOS Validation

26/08/2019
Market STTM
StageImpact Implementation Report
ConvenorAEMO Gas
Initiated28/07/2014
Accepting submissions?Yes
Submissions close25/08/2014

STTM Procedures – Hexham Custody Transfer Point at Sydney hub and zero MOS decrease offer or MOS increase offer quantity

Notice of Consultation

AEMO gives notice of consultation on proposed changes to the STTM Procedures for the Short Term Trading Market (STTM) under Rule 135EE of the National Gas Rules.

This notice of consultation is dated 28 July 2014.


Proposed procedure changes

The proposed changes to the STTM Procedures (sections 2.2 and 5.4) are to:

  • Add a new Custody Transfer Point (CTP) at Hexham for the Sydney hub. AEMO proposes adding the CTP to reflect AGL’s upstream gas infrastructure developments that will connect to the Sydney network at the Hexham receipt point.
  • Allow a MOS offer quantity to be greater than or equal to zero. This corrects a misalignment between the minimum allowable MOS offer quantity in the STTM Procedures and the STTM Web-exchanger (SWEX) / SWEX Interface Engine (SWEXIE) applications. Currently the procedures only allow a MOS quantity offer to be greater than zero gigajoules (GJ), whereas the SWEX/SWEXIE applications also allow a MOS offer to be equal to zero.

Impact and Implementation Report

AEMO has published an Impact and Implementation Report (IIR) below, which details the proposed changes to the STTM Procedures.

STTM IIR 14-003 Addition of Hexham CTP and MOS Validation
28 July 2014 | filesize: 304 KB (.pdf)

Notice to Participants of AEMOs decision on making the STTM Procedures - version 9.0

AEMO has published a notice to participants of AEMOs decision on making the STTM Procedures - version 9.0. New STTM Procedures come into effect on Friday, 26 September 2014.

Notice to Participants of AEMOs decision on making the STTM Procedures - version 9.0
05 September 2014 | filesize: 269 KB (.pdf)

Updated STTM Procedures can be found here: Rules Procedures and Interface Protocol

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