The U.S. Supreme Court is scheduled to hear oral arguments on Monday, Oct. 5, 2026, in a case that could determine whether local governments can sue oil and gas companies in state courts for climate-related damages. The lawsuit was filed by the city and county of Boulder, Colorado, which seek compensation from Suncor Energy and ExxonMobil for the costs of adapting to disasters linked to climate change. The companies argue that climate change is a global issue that should not be addressed through state-level litigation.
The city and county of Boulder originally filed the lawsuit in 2018, alleging that the energy companies deceived the public about their products' contributions to climate change. Since the filing, the region experienced the 2021 Marshall Fire, which destroyed more than 1,000 homes and caused an estimated $2 billion in damage, becoming the costliest wildfire in Colorado history. Residents like Tawnya Somauroo, whose home was destroyed in the blaze, have spent years rebuilding with fire-resilient materials and argue that the industry should share the financial burden of these safety improvements.
Attorneys for the oil companies and the Trump administration contend that the Clean Air Act gives the federal government the authority to regulate greenhouse gas emissions. They argue that one state should not be able to impose its regulatory preferences on a global problem that exists largely outside its borders. Phil Goldberg, representing the Manufacturers' Accountability Project, stated that climate change is caused by "pretty much everybody living on earth" and that litigation is not a meaningful way to address the issue. Conversely, Sam Sankar of Earthjustice stated that Boulder is not trying to regulate outside its borders but is simply seeking "compensation for things happening now in Colorado."
This ruling will directly affect dozens of local governments across the United States that have filed similar climate change lawsuits against energy firms. If the Supreme Court allows these cases to proceed in state courts, it could expose the oil and gas industry to potential liabilities for local infrastructure damage, disaster recovery, and climate adaptation projects. A decision in favor of the energy companies would likely centralize these disputes under federal law.
The case also addresses the boundary between state and federal jurisdiction over environmental policy. The court will consider whether the justices have the authority to hear the case at this procedural stage, a question experts describe as a potential "off-ramp." Justice Samuel Alito has recused himself from the case, leaving eight justices to decide the matter. This creates the possibility of a tie vote. Following the oral arguments on Monday, a final ruling is expected later in the court's term.