On 5 May 2011, the Commission published a Rule to help improve the efficiency and accuracy of price setting in the Short Term Trading Market (STTM) for natural gas. Its key purpose is to provide the market operator, AEMO, with more time to review and confirm the accuracy of STTM facility information to reduce the risk of erroneous STTM facility information affecting the setting of schedules and prices in the STTM.

The Commission gave notice under sections 311 and 313 of the National Gas Law of the making of the final Rule determination and Rule as Made in relation to the STTM Data Validation and Price Setting Process Rule change request.