Joel Fitzgibbon Warns High Court Hunter Coal Mine Case Could Have Major Economic Impact

Former federal Labor minister Joel Fitzgibbon has described High Court proceedings beginning today as potentially more significant than the Federal Budget, as Australia’s top court prepares to hear a landmark appeal involving the Hunter Valley’s Mount Pleasant coal mine.

The case centres on an appeal by MACH Energy against a 2025 NSW Court of Appeal ruling that found the state’s planning authority should have considered “Scope 3 emissions” when approving an extension of the Mount Pleasant coal mine.

Scope 3 emissions refer to greenhouse gas emissions generated when exported coal is ultimately burned overseas.

The earlier court decision overturned approval for the proposed mine extension, with environmental groups arguing downstream emissions must be factored into planning decisions for major fossil fuel projects.

MACH Energy was granted special leave to appeal to the High Court in December 2025, with the matter now being heard in Canberra.

In a statement released ahead of the hearing, Mr Fitzgibbon warned the implications could extend far beyond a single mine project.

“If this decision is not rejected by the High Court or later fixed by government, it will kill our economy,” he said.

Mr Fitzgibbon argued coal and gas exports account for roughly one-third of Australia’s export income and warned the ruling could create significant uncertainty for future resource developments.

He also criticised the growing role of litigation in environmental approvals, claiming many activist groups challenging projects are backed by major green investment funds and overseas interests.

The High Court’s eventual ruling is expected to have major implications for future coal, gas and mining approvals across Australia, particularly regarding how climate impacts are assessed in planning decisions.