Climate Change Litigation and Contract Risk: What the Supreme Court Case Means for Business

What the Supreme Court Climate Case Is Actually About

The United States Supreme Court is currently deliberating over whether state-level climate liability lawsuits against major fossil fuel companies can proceed in state courts, or whether federal law displaces them entirely. The core legal question involves the preemption doctrine: can a patchwork of state tort claims govern conduct that is already subject to federal environmental regulation? The justices appeared genuinely divided during oral argument, with several pressing both sides on where the jurisdictional line sits.

For businesses watching from outside the courtroom, the significance is not merely academic. A ruling that allows these cases to proceed in state courts would open dozens of parallel legal fronts, each with its own evidentiary standards, damage calculations and disclosure requirements. A ruling the other way would consolidate the battleground at the federal level, but would not extinguish the underlying political and regulatory pressure.

Why Climate Litigation Risk Is Now a Contract Problem

The instinct is to treat climate litigation as a matter for insurers and environmental counsel. That instinct is increasingly wrong. Contract portfolios carry embedded climate risk in at least three ways.

First, long-term supply and offtake agreements, particularly in energy, infrastructure and manufacturing, often lack any mechanism to address a dramatic shift in the regulatory or liability landscape. If a counterparty faces a multi-billion-dollar state court judgment, their ability to perform under existing contracts may be materially compromised.

Second, indemnity and hold-harmless clauses drafted before the current wave of climate litigation may be poorly scoped. A company that agreed to indemnify a partner against "environmental claims" a decade ago may not have contemplated state-level nuisance or public trust tort actions of the kind now before the Supreme Court.

Third, corporate climate disclosure obligations, whether under the SEC's climate rules, the EU's CSRD or emerging state-level equivalents, are beginning to appear as contractual representations and warranties. A misstatement in a sustainability report can now constitute a contractual breach, not merely a regulatory infraction.

Force Majeure and Material Adverse Change: Are Your Clauses Fit for Purpose?

Two standard contract provisions deserve particular scrutiny in light of the Supreme Court climate litigation uncertainty.

Force majeure clauses, even well-drafted ones, rarely contemplate protracted litigation-driven disruption. They are designed for discrete, external events. A supplier whose operations are constrained not by a storm but by an injunction arising from climate tort liability sits in a legal grey zone that most force majeure definitions do not cleanly resolve. Contracts that enumerate specific triggering events rather than relying on broad language are especially vulnerable to gaps here.

Material adverse change clauses in M&A and financing agreements are equally exposed. If a target company is a named defendant in state climate litigation, or if the Supreme Court ruling dramatically alters the liability exposure of an entire sector, buyers and lenders will want to argue that a MAC has occurred. Whether their clause actually supports that argument depends entirely on how the definition was drafted, and specifically whether it carves out industry-wide or regulatory changes from the MAC definition.

How Companies Should Be Reviewing Contracts Right Now

The practical response is not to wait for the Supreme Court's ruling before acting. The ruling will clarify jurisdiction, not eliminate risk. Companies with material exposure to energy, extractives, transportation, agriculture or heavy industry should be doing the following.

Conduct a targeted audit of long-term contracts for indemnity scope, force majeure triggers and MAC definitions. Identify counterparties who are defendants in existing climate litigation and assess the credit and performance risk that litigation represents. Review representations and warranties in financing agreements to confirm that climate disclosure obligations are accurately described and achievable. Where contracts are approaching renewal, use the opportunity to introduce explicit climate litigation carve-outs, or conversely, to ensure such carve-outs do not inadvertently shield counterparties from legitimate claims.

AI-assisted contract review is particularly well-suited to this kind of portfolio-wide risk scan. Reviewing thousands of agreements for specific clause language, identifying outliers and flagging counterparty exposure can be done in hours rather than months when the right tools are in place.

What a Supreme Court Ruling Either Way Will Change

If the Court allows state climate lawsuits to proceed, the immediate effect will be a proliferation of litigation in plaintiff-friendly state jurisdictions. Companies with any connection to fossil fuel production, distribution or financing should expect to appear in discovery requests even as non-parties. Contracts containing broad cooperation and compliance obligations may require active management.

If the Court rules that federal law preempts these claims, the litigation does not disappear. Congress, the EPA and international regulatory bodies retain significant authority. More importantly, a federal preemption ruling may actually accelerate federal legislative action, producing new statutory liability frameworks that again reshape contractual risk.

Either outcome reinforces the same lesson: climate change is no longer a background environmental issue that contract lawyers can leave to specialists. It is a front-line commercial law problem, and contracts that were not drafted with that reality in mind need urgent attention.