On February 23, 2026, the U.S. Supreme Court granted three fossil fuel companies’ petition for a writ of certiorari seeking review of the Colorado Supreme Court’s opinion allowing the County Commissioners of Boulder County and the City of Boulder (together, Boulder) to proceed with their state-law claims that the companies are liable for climate change-related injuries suffered by Boulder. In their petition for writ of certiorari, the companies—Suncor Energy (U.S.A.) Inc., Suncor Energy Sales Inc., and Exxon Mobil Corporation—asked the Supreme Court to consider the question of “[w]hether federal law precludes state-law claims seeking relief for injuries allegedly caused by the effects of interstate and international greenhouse-gas emissions on the global climate.” In its order granting certiorari, the Court asked the parties to brief both this question and also the additional issue of whether the Court has statutory and Article III jurisdiction to hear the case.

Action by Colorado local governments seeking damages and other relief from fossil fuel companies for climate change harms.

Suncor Energy (U.S.A.) Inc. v. County Commissioners of Boulder County

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Supreme Court Granted Certiorari in Boulder’s Climate Case Against Fossil Fuel Companies

Filed

United States of America

Colorado

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Supreme Court Granted Certiorari in Boulder’s Climate Case Against Fossil Fuel Companies

Fossil fuel

Greenhouse gas

Economic sector

Finance