When Climate Governance Fails, Accountability Goes to Court

Net-zero targets, transition plans, climate risk disclosures, and sustainability commitments have become part of the normal language of governments, companies, and financial institutions. As these commitments have multiplied, so have the expectations attached to them. Investors, regulators, employees, and communities can now compare what an institution says about climate change with the decisions it makes around capital, risk, operations, and investment.

Increasingly, some of those comparisons are ending up in court.

The 2026 Global Trends in Climate Change Litigation report from the Grantham Research Institute records more than 3,600 climate cases across 62 countries, with more than three-quarters filed since the Paris Agreement. Another 249 cases were recorded in 2025. Yet, the more interesting development is where litigation is going and what claimants are asking courts to examine.

Corporate governance, financing decisions, transition planning, disclosure, adaptation, and investment practices are increasingly part of climate related disputes. 

More than 50 strategic climate aligned cases were filed against companies in 2025 across sectors, including energy, finance, transport, real estate, and consumer goods. Institutional investors, financial institutions, state-owned enterprises, and companies further along supply chains are also appearing more frequently as defendants.

Corporate liability cases show how quickly the legal terrain is developing. No systemic polluter pays or corporate framework case has yet resulted in a final upheld damages order, but courts in several jurisdictions have allowed claims to move forward and be considered on their merits. Legal arguments that struggled to get through the courtroom door a decade ago are now reaching questions of evidence, responsibility, and causation.

That evolution deserves attention from corporate leaders because many of the issues being scrutinized originate in everyday management decisions.

A business can provide sophisticated climate risk advice to clients while applying different assumptions to employee pensions. A financial institution can recognize transition risk in its disclosures while continuing to finance activities carrying significant emissions exposure. A company can publish a detailed transition plan without being able to show how it influences capital expenditure, procurement, or operational priorities.

The report identifies inconsistencies in how companies manage climate risk across clients, consumers, and employees as an emerging source of litigation. Shareholder cases are also beginning to combine failure to adapt arguments with transition risk, bringing physical climate impacts into questions of governance and fiduciary responsibility.

These developments expose a structural problem inside many organizations. Sustainability commitments may sit with one team, investment decisions with another, physical risk with operations, fiduciary responsibility with legal, and public claims with communications. Those functions may have different mandates and different information, but external scrutiny increasingly considers whether their decisions form a coherent whole.

Climate washing cases provide one of the clearest examples. They remain the most common type of climate litigation involving corporate actors, and more than 65% of cases decided over time have been resolved in favor of claimants. Political pressure has encouraged some companies to reduce sustainability communications, yet the report warns that "greenhushing" does not remove legal exposure. Saying less cannot resolve weaknesses in the evidence supporting a transition plan or inconsistencies between public commitments and investment decisions.

The stronger position is to ensure that what is communicated can be traced back to evidence, governance processes and actual business decisions.

Climate Accountability and Corporate Governance

The growing sophistication of climate science is adding another layer to this scrutiny. The report describes stronger causal chains connecting emissions, climate change and specific harms, alongside methodologies that are making financed emissions easier to trace. Researchers are also increasingly able to connect individual emitters with quantifiable economic losses associated with extreme heat.

Scientific attribution does not determine legal responsibility by itself, and courts will continue to interpret these questions differently across jurisdictions. It does, however, strengthen the evidence available when someone asks whether a climate risk was foreseeable, whether it was properly assessed and whether an organization responded appropriately.

Those questions can reach surprisingly deep into the business.

Investment committees decide where capital is allocated. Risk teams determine which physical and transition risks enter enterprise risk systems. Procurement decisions influence exposure across supply chains. Operations teams determine how assets, workers, and communities are protected from climate hazards. Boards oversee management and approve major priorities. Communications teams describe commitments that are expected to reflect those underlying decisions.

A climate strategy can therefore look coherent in a report while remaining fragmented across the organization. Litigation creates another route through which those inconsistencies can be examined.

The same dynamic is emerging in the public sector. Courts in many jurisdictions have strengthened legal interpretations of government climate obligations, while litigation is increasingly focused on whether those obligations are actually implemented. At the same time, protective litigation is being used to challenge regulatory rollback, while other cases are questioning whether transition projects sufficiently protect workers, Indigenous peoples, communities, and biodiversity.

The result is a more demanding form of climate accountability. Announcing ambition is increasingly accompanied by scrutiny of how decisions are made, whose interests are considered, what evidence supports them and whether implementation follows.

For companies, many of the vulnerabilities identified in the report therefore originate well before a legal claim appears. They develop when transition plans are disconnected from investment decisions, when different functions operate with conflicting assumptions about climate risk, when public statements cannot be supported by operational evidence, or when foreseeable physical impacts remain outside mainstream risk management.

Reducing that exposure requires stronger links between governance, risk, finance, operations, and sustainability. An organization should be able to explain what it knows about climate risk, how that knowledge influences decisions, who is accountable for acting on it, and what changed as a consequence.

Climate litigation is increasingly providing a forum where those connections can be tested. As courts gain access to stronger evidence, established legal arguments, and more developed methodologies, the quality of corporate climate governance will receive greater scrutiny as well.