Supreme Court Weighs Whether Local Governments Can Sue Oil Companies for Climate Damage
The Supreme Court is considering whether Boulder, Colorado, can pursue state-law claims against ExxonMobil and Suncor Energy for climate-related damages, with the outcome poised to affect similar lawsuits nationwide.
Chanan Zevin - Chief Editor and Head of Desks
Background of the Case
The Supreme Court recently heard oral arguments in Suncor Energy Inc. v. County Commissioners of Boulder County, a case stemming from an eight-year legal battle initiated by Boulder, Colorado, against ExxonMobil and Suncor Energy. Boulder seeks compensation for costs incurred due to climate change impacts, alleging the companies' production and marketing of fossil fuels contributed to these harms. The case is one among dozens filed by local governments seeking damages for climate-related injuries. [S1]
Boulder’s lawsuit claims that Exxon and Suncor have long deceived the public about the effects of climate change and the role of fossil fuels in causing those effects. The city and county argue that the companies’ actions have led to increased expenses for mitigating extreme weather, wildfires, and ecosystem damage. The case was originally filed in Colorado state court, and the companies’ attempt to move it to federal court was unsuccessful. [S2]
After the state trial court refused to dismiss the case, the Colorado Supreme Court ruled that Boulder’s state-law claims were not preempted by federal law, allowing the suit to proceed. Exxon and Suncor then appealed to the U.S. Supreme Court, which agreed to review the case, focusing on whether federal law bars such claims and whether the Supreme Court has jurisdiction to review the state court’s decision. [S1]
Key Legal Questions: Preemption and Jurisdiction
Central to the Supreme Court’s review are two questions: whether Boulder’s claims are preempted by federal law, and whether the Court has jurisdiction to review the Colorado Supreme Court’s decision. The energy companies argue that federal law, particularly the Clean Air Act, governs interstate air pollution and precludes state-law claims seeking to address global climate change. [S2]
Kannon Shanmugam, representing Exxon and Suncor, described Boulder’s lawsuit as an unprecedented use of state law to regulate global conduct, asserting that the Constitution bars states from regulating out-of-state conduct based solely on effects within their borders. He warned that allowing the case to proceed could enable thousands of municipalities to pursue similar claims, potentially influencing national and international energy policy. [S2]
On the other hand, Boulder’s counsel, Kevin Russell, argued that states have long provided remedies for injuries occurring within their borders, even when caused by conduct elsewhere. He emphasized that Congress retains the authority to preempt state law if it chooses, and that Boulder’s suit does not seek to regulate the companies’ actions directly, but rather to recover costs for damages incurred. [S1]
The Justices’ Reactions and Alito’s Recusal
The justices’ questions during oral argument revealed a lack of consensus. Chief Justice John Roberts expressed skepticism toward the energy companies’ arguments, noting that state-court lawsuits often address conduct occurring outside the state with in-state effects. He questioned what distinguishes Boulder’s case from other mass tort actions permitted under state law. [S1]
Justice Elena Kagan drew parallels between Boulder’s claims and historic lawsuits against tobacco and opioid manufacturers, suggesting that state-law claims in those contexts were not preempted by federal law. However, Justice Brett Kavanaugh cited Supreme Court precedents indicating that interstate air and water pollution are inherently federal matters unless Congress specifies otherwise. [S2]
Justice Samuel Alito recused himself from the case, leaving only eight justices to decide. No reason was given for his recusal, but financial disclosures indicated holdings in other energy companies. This raises the possibility of a 4-4 split, which would leave the Colorado Supreme Court’s decision intact and allow Boulder’s case to proceed. [S2]
Broader Implications for Climate Litigation
The outcome of Suncor Energy v. Boulder County carries significant implications for dozens of similar lawsuits filed by states and local governments against energy companies. If the Supreme Court rules in favor of Boulder, it could open the door for more local governments to pursue damages for climate change impacts under state law. [S2]
Conversely, a ruling for the energy companies could foreclose such claims, consolidating authority over interstate pollution and climate-related damages at the federal level. Several justices voiced concerns about the potential for a flood of litigation if Boulder’s theory prevails, but Boulder’s counsel argued that existing legal doctrines would limit the scope of such suits. [S1]
The sources do not specify the exact number of similar cases pending nationwide, but note that Boulder’s lawsuit is one of dozens. The decision is thus closely watched by both environmental advocates and the energy industry, as it may set a precedent for the viability of state-law climate claims. [S2]
Next Steps and Potential Outcomes
With Justice Alito’s recusal, a 4-4 deadlock is possible. In that scenario, the Colorado Supreme Court’s decision would stand, and Boulder’s lawsuit would proceed in state court. This would not create a binding Supreme Court precedent but would allow similar cases to advance in other jurisdictions. [S1]
If a majority of justices agree that federal law preempts Boulder’s claims, the case could be dismissed, potentially halting similar state-law climate lawsuits. However, several justices appeared uncertain about whether the Court should intervene at this stage, with Justice Ketanji Brown Jackson suggesting that the review may be premature. [S2]
The timing of a decision remains uncertain, and the sources do not specify when the Court will issue its ruling. Regardless of the outcome, the case underscores the evolving legal landscape for climate accountability and the ongoing debate over the respective roles of state and federal law in addressing global environmental harms. [S2]