Supreme Court to Hear Oil Companies' Bid to Toss Local Climate Lawsuit

The justices will consider a request from ExxonMobil and Suncor to dismiss a suit brought by the city and county of Boulder, Colorado.

Feb. 23, 2026 at 5:07pm

The Supreme Court has agreed to take up a case where oil companies ExxonMobil and Suncor are seeking to dismiss a lawsuit filed by the city and county of Boulder, Colorado, which alleges the companies knowingly contributed to climate change. The oil companies argue that regulating interstate pollution is a federal matter, while Boulder contends states should be able to hold bad actors accountable for out-of-state conduct that harms their communities.

Why it matters

The Supreme Court's decision could have far-reaching implications, as cities and states across the nation have filed similar lawsuits against energy firms over their contributions to climate change. A ruling in favor of the oil companies could make it more difficult for local governments to hold these companies legally responsible for climate-related harms.

The details

Boulder sued ExxonMobil and Suncor, alleging the companies 'knowingly and substantially contributed to the climate crisis by producing, promoting and selling a substantial portion of the fossil fuels.' The oil companies argue that regulating interstate pollution is an 'inherently federal area' and that Boulder 'cannot make energy policy for the entire country.' The Supreme Court will also consider whether it has jurisdiction to take up the case in the first place.

  • The Supreme Court decided to take up the case on February 23, 2026.

The players

ExxonMobil

A major American oil and gas corporation that is one of the defendants in the lawsuit brought by Boulder, Colorado.

Suncor

A Canadian energy company that is the other defendant in the lawsuit brought by Boulder, Colorado.

Boulder, Colorado

The city and county that filed the lawsuit against ExxonMobil and Suncor, alleging the companies knowingly contributed to climate change.

Got photos? Submit your photos here. ›

What’s next

The Supreme Court will hear arguments in the case and decide whether to allow the lawsuit brought by Boulder, Colorado against ExxonMobil and Suncor to proceed.

The takeaway

This case highlights the ongoing legal battles between local governments and major energy companies over responsibility for climate change. The Supreme Court's ruling could set an important precedent on whether states and municipalities can hold fossil fuel producers accountable for their contributions to global warming.