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Supreme Court to Hear Climate Lawsuit Appeal
23 Feb
Summary
- Supreme Court will review energy companies' bid to dismiss a climate change lawsuit.
- The case originated in Colorado, brought by Boulder city and county.
- Companies argue climate policy should be a federal issue, not state-by-state.

The Supreme Court will consider whether energy companies can have a climate change lawsuit thrown out. The case, originating in Colorado and filed by the City of Boulder and Boulder County, seeks to hold energy firms accountable for climate change costs.
Plaintiffs allege that the production and sale of fossil fuels by companies like Exxon Mobil and Suncor Energy have caused harms such as extreme temperatures and wildfires. They claim these actions violate various state laws, including consumer protection provisions.
The energy companies contend that climate policy is exclusively a federal concern, as pollution crosses state lines. They believe a piecemeal state-by-state approach is not viable for regulation.
The Supreme Court's decision in this matter carries national implications, potentially determining the fate of numerous similar lawsuits filed by municipalities across the country.
This development follows a May 2025 Colorado Supreme Court ruling that allowed the Boulder case to proceed. The Supreme Court previously declined to hear an appeal on similar lawsuits in 2023.