BHP Billiton Iron Ore Pty Ltd v National Competition Council & Anor

The applicant, BHP Billiton Iron Ore Pty Ltd, sought judicial review of a decision by the National Competition Council (NCC) and the Commonwealth of Australia (the respondents) to refuse to declare iron ore rail infrastructure in the Pilbara region of Western Australia. The dispute concerned whether the NCC had erred in its assessment of the public benefit and detriment associated with declaring the infrastructure, which would have subjected it to third-party access under the *Competition Policy Reform Act 1995* (Cth). The matter was heard in the High Court of Australia.

The primary legal issue before the High Court was whether the NCC had acted unlawfully in its determination. Specifically, the court was required to consider whether the NCC had failed to properly consider the public benefit and detriment arising from the declaration, particularly in relation to the potential for increased competition and the impact on the existing operator's investment incentives. The court also had to determine if the NCC had misinterpreted or misapplied the relevant provisions of the *Competition Policy Reform Act 1995* in reaching its decision.

Hayne J found that the NCC had not erred in its assessment. His Honour reasoned that the NCC was entitled to conclude that the public detriment of declaring the infrastructure, including the potential disincentive for future investment by the incumbent operator, outweighed the public benefit of increased competition. The court applied the principles of administrative law, focusing on whether the NCC's decision was within the bounds of reasonableness and whether it had properly considered all relevant factors as mandated by the legislation. The court affirmed that the NCC's role was to weigh competing public interests, and its conclusion that declaration was not in the public interest was a permissible one.