US Supreme Court to Hear Bid by Oil Companies to Dismiss Climate Change Lawsuits

WASHINGTON, Feb 23 (Reuters) – The U.S. Supreme Court has agreed to hear a case brought by ExxonMobil and Suncor Energy, who are seeking to dismiss a lawsuit filed by Boulder, Colorado. The lawsuit alleges that the oil companies are responsible for fueling climate change and seeks to hold them accountable for the costs the city has incurred in mitigating its effects. This case has the potential to influence numerous similar lawsuits across the United States.

Appeal to Dismiss Lawsuit

The Supreme Court justices on Monday agreed to review an appeal from ExxonMobil and Suncor Energy, challenging a lower court’s ruling that allowed the lawsuit to proceed. The lawsuit, which involves state law violations, is seeking unspecified damages for costs related to climate change mitigation, including infrastructure repairs, environmental damage, emergency management, and public health concerns.

The Trump administration has supported the appeal from the oil companies, arguing that the case should not be allowed to move forward.

Wider Implications for Fossil Fuel Litigation

The Boulder case is part of a broader trend where various U.S. jurisdictions are seeking compensation from companies involved in the extraction, production, distribution, or sale of fossil fuels. These jurisdictions argue that the companies’ actions contributed significantly to climate change, leading to economic and environmental damage.

Fossil fuel combustion releases greenhouse gases, such as carbon dioxide, into the atmosphere, which traps more heat from the sun and leads to a gradual rise in global temperatures over time.

Boulder’s Allegations

In its 2018 lawsuit, the Boulder government accused ExxonMobil (U.S.) and Suncor Energy (Canada) of misleading the public about the role of their products in exacerbating climate change. The city also claims that these companies profited from fossil fuel sales while failing to address the negative impact of their products on the environment. Both companies have denied any wrongdoing.

Legal Challenges and Government Support

The companies have argued that the Boulder lawsuit violates the federal regulation of greenhouse gas emissions, particularly under the Clean Air Act. They pushed for the case to be dismissed, but in May 2025, the Colorado Supreme Court denied their request, which led to their appeal to the U.S. Supreme Court.

Oil companies have faced increasing pressure from similar climate-related lawsuits, but so far, they have been largely unsuccessful in dismissing these cases. According to the companies, nearly 60 state and local governments have filed similar lawsuits seeking billions of dollars in damages.

Trump Administration’s Involvement

The Trump administration has supported the oil companies in various ways, including launching two preemptive cases to stop Hawaii and Michigan from filing climate-related lawsuits. The administration argued that such actions could threaten domestic energy production.

Previous Supreme Court Rejection

The U.S. Supreme Court previously declined to intervene in a similar case involving Sunoco and other oil companies, which sought to dismiss a climate-related lawsuit filed by Honolulu. The Hawaii Supreme Court allowed the case to proceed, which seeks to hold the companies accountable for their role in contributing to extreme weather patterns and rising sea levels along the Honolulu coastline.