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Australia's High Court Blocks Coal Mine Expansion
7 Oct
Summary
- High Court ruled local authorities ignored climate impact rules.
- Scope 3 emissions were 98% of the mine's greenhouse gas output.
- Community group's legal challenge led to the landmark decision.

In a pivotal climate change case, Australia's High Court has upheld a decision to prevent the expansion of the Mount Pleasant coal mine in New South Wales. The ruling by the nation's highest court dismissed MACH Energy's appeal to extend the mine's operations until 2048 and double its production.
The court found that authorities failed to properly consider imposing conditions to mitigate the project's significant climate footprint. Justice James Edelman highlighted that by focusing only on 2% of the project's emissions, the commission neglected its duty to ensure greenhouse gas emissions were minimized.
This legal battle was initiated by the Denman Aberdeen Muswellbrook Scone Healthy Environment Group, a local residents' organization. Their successful challenge in the New South Wales Court of Appeal paved the way for this High Court hearing, marking the first time the court has ruled on a climate change case.
Advocates hailed the decision as historic, emphasizing that planning authorities can no longer ignore the direct link between fossil fuel projects and local climate harm. MACH Energy acknowledged the outcome and stated they would review the judgment for future implications.