On 11 December 2008, the AER released its proposed statement (transmission) and proposed statement of regulatory intent (distribution) on the revised WACC parameters. The AER also published its explanatory statement on the proposed WACC parameters, and consultants reports commissioned by the AER in the context of the proposed statements.

In the context of the proposed statements, the AER comissioned expert reports from Associate Professors John Handley and Olan Henry from Melbourne University and Deloitte. The reports are attachments to the explanatory statement

Submissions on the explanatory statement closed on 28 January 2009. The AER granted an extension to 2 February 2009, for the submissions from the Joint Industry Associations, ENA, Energex, Ergon Energy, ESAA, Grid Australia and Queensland Government.

On 17 December 2008, the AER held a public forum for the purposes of explaining its proposed statements on the WACC parameters and to receive oral submissions from interested stakeholders.

Submissions on the explanatory statement closed on 28 January 2008. The AER granted an extension to 2 February 2009, for the submissions from the Joint Industry Associations, ENA, Energex, Ergon Energy, ESAA, Grid Australia and Queensland Government.