On 20 May 2010, the Commission gave notice under section 311 of the NGL of the making of the final Rule determination for the first gas Rule change request - the Prioritisation of Tied Controlled Withdrawal Bids Rule change request.

In its final Rule determination, the Commission decided to make the Rule proposed by AEMO following its consideration of submissions on the draft Rule determination and further analysis. The Commission made the Rule as it was satisfied that the Rule will or is likely to contribute to the achievement of the National Gas Objective.