NSW MP Urges Lawyers to Challenge Coal Approvals Following Historic Climate Ruling

A landmark ruling by Australia’s highest court has delivered a decisive blow to fossil fuel project approvals, establishing a critical precedent for how greenhouse gas emissions are evaluated in future developments.

The High Court ruled on Wednesday that the expansion of MACH Energy’s Mount Pleasant coalmine in NSW’s Hunter Valley was unlawful. The verdict marks a pivotal moment in the country’s first major climate litigation case, emphasizing that exported emissions can no longer be overlooked during the approval process.

The decision came after the Denman Aberdeen Muswellbrook Scone Healthy Environment Group (Dams Heg) successfully challenged the expansion in the NSW Court of Appeal on climate-related grounds, prompting MACH Energy to escalate the matter to the nation’s highest judicial authority.

In a narrow 3-2 judgment, the High Court found that the state’s Independent Planning Commission (IPC) had failed to adequately assess conditions aimed at minimizing Scope 3 emissions—greenhouse gases released when the mined coal is burned overseas. These indirect emissions are typically excluded from Australia’s domestic accounting but played a central role in the court’s reasoning.

Deputy Greens leader Senator Sarah Hodgins-May criticized fossil fuel companies for evading responsibility over overseas emissions, stating, “Big coal and gas firms have spent years pretending their pollution ends at the shoreline. But climate harm doesn’t stop at borders—it returns home through more frequent heatwaves, prolonged droughts, devastating bushfires, and worsening floods.”

She added that the judgment served as a powerful rebuke to both corporations and regulators who continue to sideline the broader climate implications of resource extraction.

NSW Greens MP Ms. Higginson—an advocate with deep experience in environmental law—argued that the ruling could jeopardize other ongoing coal projects, particularly the recently approved Hunter Valley Operations (HVO) coalmine extension—the largest in state history.

While acknowledging that the IPC recognized climate risks associated with the HVO project, it ultimately concluded that regional economic benefits outweighed those concerns. However, Higginson pointed out that nearly all emissions tied to these projects fall under Scope 3 classifications—an area where the IPC fell short in its due diligence.

“The environmental impact statement for HVO didn’t even consider Scope 3 emissions,” she said. “This court made it unmistakably clear that consent authorities must take every feasible step to reduce emissions. If this standard isn’t met, legal challenges will follow swiftly.”

She went on to urge legal professionals to act decisively: “Lawyers need to move quickly now, armed with this precedent, and challenge existing coal approvals wherever possible.”

Opposition leaders, including Federal Liberal Leader Angus Thatcher and Nationals Leader Matt Canavan, condemned the outcome as economically damaging and politically motivated. In a joint statement, they warned that the ruling threatened Australia’s reputation as a dependable provider of energy commodities and called on the federal and NSW governments to revise current legislation to exclude overseas emissions from local approval processes.

Meanwhile, Minister for Climate Change Chris Bowen defended the independence of the judiciary while acknowledging tensions around energy policy. Speaking from Fiji during international climate negotiations, Bowen emphasized his government’s respect for the rule of law despite ideological disagreements.

“We accept what the courts decide,” Bowen stated. “To suggest otherwise undermines our democratic foundations—and quite possibly reveals certain political biases.”

Federal Environment Minister Murray Watt cautioned against assuming automatic nationwide applicability of the decision, noting its specific grounding in NSW statutory frameworks rather than Commonwealth regulations.

As momentum builds for renewed debate over energy policies and regulatory standards, stakeholders across industry, activism, and politics brace themselves for further legal scrutiny of major fossil fuel proposals throughout the country.

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