Overview
- The Supreme Court will hear oral argument in Suncor v. Boulder County on Monday, Oct. 5, a case that asks whether state courts can award damages for local climate harms attributed to greenhouse‑gas emissions.
- At the heart of the case is a preemption question about the Clean Air Act and constitutional limits on state authority to regulate conduct that crosses state and national borders.
- Justice Samuel Alito has recused himself because of energy‑sector holdings leaving eight justices and a realistic chance of a 4–4 split that would leave lower‑court rulings in place.
- Defendants warn that large damage awards could raise consumer energy costs and affect national energy policy while plaintiffs say state tort law is a proper avenue for local climate recovery.
- Boulder’s suit is one of roughly three dozen similar municipal and state lawsuits and the decision will shape whether those suits proceed in state courts or are curtailed by federal law and administrative actions by agencies such as the EPA.