On 23 May 2013, the AEMC published the final rule determination and final (more preferable) rule for the Market Operator Service (MOS) – Timing and Eligibility rule change request.

The Commission has decided to make a more preferable rule that largely adopts the changes proposed by the rule change proponent, the Australian Energy Market Operator (AEMO), in their rule change request.

The final rule reduces the MOS period to one month in the National Gas Rules (NGR) and broadens the MOS provider eligibility requirements to include trading right holders.

The final rule will commence on 1 April 2014, with the new monthly MOS period in effect from 1 June 2014.