East Australian Pipeline Pty Ltd v Australian Competition and Consumer Commission

The High Court of Australia considered an appeal by East Australian Pipeline Pty Limited (EAPL) against a decision of the Full Court of the Federal Court of Australia. The dispute concerned the Australian Competition and Consumer Commission's (ACCC) rejection of EAPL's proposed Access Arrangement for its natural gas pipeline, which was subject to a third-party access regime under the National Third Party Access Code for Gas Pipeline Systems. The ACCC had adopted its own Access Arrangement, including a Reference Tariff based on a lower Initial Capital Base (ICB) than EAPL proposed, employing a novel valuation methodology.

The central legal issues before the High Court were the proper construction of section 8.10 of the Code, which outlines factors for establishing the ICB for an existing pipeline, and whether that section permitted the ACCC's novel asset valuation methodology. Additionally, the Court examined the scope of the Australian Competition Tribunal's jurisdiction to review regulatory decisions, specifically whether the Tribunal correctly found the ACCC's exercise of discretion to be unreasonable, and whether the Federal Court erred in law by setting aside the Tribunal's determination.

The High Court reasoned that the Tribunal had correctly interpreted section 8.10 of the Code, finding that the ACCC's departure from established valuation methodologies in favour of a "novel fashion" was unreasonable and a misconstruction of the section. The Tribunal had emphasised that the ICB is defined by the Code and that while discretion exists, both the operator and the regulator are bound by its provisions. The Tribunal viewed the factors in section 8.10 as guiding the consideration of recognised valuation methods, not as permitting their abandonment in favour of a quest for justice or equity, and concluded that the ICB should accord with depreciated replacement cost calculated on original cost, including a contingency for omissions.

The High Court allowed the appeal, setting aside the orders of the Full Court of the Federal Court and remitting the remaining aspects of the judicial review application for further directions. EAPL was awarded its costs of the appeal and its costs incurred to date in the Federal Court.