On 8 August 2013, the AEMC published a final rule determination in respect of the rule change request from Trans Tasman Energy Group on the cost allocation method and negotiated service pricing principles.

In its final determination the Commission determined not to make a rule. The existing rules provide sufficient opportunities for customer engagement and access to relevant cost information for negotiated services. Negotiated services are intended to have a degree of competitive provision and the light handed regulatory framework that currently exists is sufficient.