Australia’s highest bench is poised to hear its first-ever climate case, and environmentalists hope the fight will result in national precedent requiring the study of greenhouse gas emissions before fossil fuel projects are approved.
The case stems from a July 2025 ruling by the New South Wales Court of Appeal, which sided with a local community group and rejected a 2022 approval of an open-cut coal mine expansion. The court found planning authorities were required to consider the local effects of the project’s downstream emissions.
Mach Energy Australia, the coal company behind the mine, has asked the High Court of Australia to overturn the finding.
The case presents a “watershed moment in the history of Australian law,” said Nicole Rogers, a climate law professor at Bond University in Queensland.
