Australian Energy Regulator v Australian Competition Tribunal (No 2)

The Australian Energy Regulator (AER) sought judicial review of a decision made by the Australian Competition Tribunal (Tribunal), which had reviewed decisions of the AER. The dispute primarily centred around the Tribunal's interpretation of certain provisions in the National Electricity Rules, specifically those concerning the determination of the rate of return on debt, the value of imputation credits, and the operating expenditure criteria. Additionally, the AER argued that the Tribunal had allowed the distribution network service providers to raise matters in the Tribunal that were not initially presented and maintained in their submissions to the AER, in contravention of section 71O(2) of the National Electricity Law.

The legal issues that the court needed to address were twofold: firstly, whether the Tribunal had erred in its construction of the relevant provisions in the National Electricity Rules; and secondly, whether the Tribunal had permitted the distribution network service providers to raise new matters contrary to the statutory provisions. The AER contended that the Tribunal had misconstrued the provisions and allowed the distribution network service providers to introduce new arguments that had not been raised before the AER. The Tribunal, on the other hand, defended its decisions, arguing that its interpretation of the rules was correct and that the distribution network service providers had not introduced new matters but had rather clarified their submissions.

The court carefully examined the statutory provisions and the submissions made by the parties. It found that the Tribunal had indeed erred in its interpretation of the National Electricity Rules, particularly in how it determined the rate of return on debt and the value of imputation credits. The court also determined that the Tribunal had allowed the distribution network service providers to raise matters that were not initially presented to the AER, thereby contravening the statutory provisions. Consequently, the court quashed the Tribunal's decision and remitted the matter back to the Tribunal for reconsideration in light of the court's findings.

The final orders were that the parties were to consult and, within 21 days, file orders in an agreed form to give effect to these reasons. If the parties could not agree, they were to file, within the same period, the orders for which they contended. The proposed orders were to include orders as to costs, with entry of orders dealt with in Rule 39.32 of the Federal Court Rules 2011.