Myths vs. realities: Climate litigation & corporate accountability — what the evidence actually supports

Climate litigation cases worldwide have surged past 2,666 as of early 2026, more than doubling since 2020, according to the Grantham Research Institute on Climate Change and the Environment at the London School of Economics. In the EU alone, landmark rulings against Shell, TotalEnergies, and the German government have reshaped expectations for corporate emissions reduction targets. Yet the narratives surrounding climate litigation frequently outpace the evidence, with both proponents and skeptics making claims that do not hold up to scrutiny. For corporate leaders, investors, and policymakers navigating this rapidly evolving legal landscape, distinguishing myth from reality is essential to managing risk and allocating resources effectively.

Why It Matters

Climate litigation is no longer a fringe concern for environmental activists. It has become a material financial and operational risk for companies across energy, finance, manufacturing, and consumer sectors. The Sabin Center for Climate Change Law at Columbia University tracked 233 new climate-related cases filed globally in 2025 alone, with the EU accounting for approximately 38% of all new filings (Sabin Center, 2025). Courts in the Netherlands, Germany, France, Ireland, and Belgium have issued binding rulings that directly affect corporate strategy.

The financial stakes are significant. Swiss Re estimates that climate litigation exposure across the global insurance industry reached $30 billion in potential liabilities by the end of 2025, up from an estimated $12 billion in 2022 (Swiss Re Institute, 2025). For companies named as defendants, legal costs, reputational damage, and the operational disruption of responding to discovery requests and court orders create costs well beyond any eventual judgment or settlement.

At the same time, exaggerated claims about the power of litigation to drive systemic change can lead to misallocated advocacy resources and unrealistic expectations among stakeholders. A balanced, evidence-based assessment helps executives, legal teams, and sustainability practitioners calibrate their strategies appropriately.

Key Concepts

Climate litigation encompasses a broad range of legal actions, from constitutional cases brought by citizens against governments to tort claims against fossil fuel companies, shareholder derivative suits, and regulatory enforcement actions. The EU context includes both national court proceedings and cases brought under EU law, including the European Convention on Human Rights (ECHR). Key legal theories include the duty of care doctrine (as applied in the Milieudefensie v. Shell case), the right to a healthy environment (recognized by the ECHR in 2024), and fiduciary duty arguments used in shareholder litigation against corporate boards.

Corporate accountability in this context refers to the legal and financial consequences companies face when their climate commitments, disclosures, or emissions trajectories are challenged in court. This extends beyond direct emissions liability to include allegations of greenwashing, inadequate transition planning, and failure to disclose material climate risks.

Myth 1: Climate Litigation Only Targets Fossil Fuel Companies

A common misconception holds that climate lawsuits are directed exclusively at oil and gas majors. While fossil fuel companies remain the most frequent targets, the scope of litigation has expanded significantly. The Grantham Research Institute's 2025 database shows that 27% of all climate cases globally now involve non-fossil-fuel defendants, including financial institutions, food and agriculture companies, automotive manufacturers, and consumer goods firms (Grantham Research Institute, 2025).

In the EU, BNP Paribas faced a landmark case in France in 2025 where plaintiffs argued the bank's continued financing of fossil fuel expansion violated its duty of vigilance under France's Devoir de Vigilance law. Danone was challenged over allegedly misleading sustainability claims on packaging. KLM was ordered by a Dutch court to modify advertising that characterized its operations as "sustainable" without adequate substantiation.

The reality: any company making public climate commitments, publishing emissions reduction targets, or marketing products as sustainable is potentially within the scope of climate litigation. The expansion is driven by the broadening of legal theories beyond direct emissions causation to include facilitation, financing, and misrepresentation.

Myth 2: Courts Cannot Force Companies to Cut Emissions

The Milieudefensie v. Royal Dutch Shell ruling in 2021 demonstrated that courts can indeed order specific emissions reduction targets for private companies. The Hague District Court ordered Shell to reduce its net CO2 emissions by 45% by 2030 compared to 2019 levels, covering Scope 1, 2, and 3 emissions. Shell appealed, and the appeals court decision in November 2024 upheld the duty of care framework but modified the specific target methodology, requiring Shell to demonstrate alignment with the Paris Agreement's 1.5 degree Celsius pathway using a science-based methodology of its choosing (The Hague Court of Appeal, 2024).

Critics point to the appeal modification as evidence that courts ultimately lack enforcement power. However, the more significant takeaway is that the duty of care principle survived appeal and is now being applied in cases across multiple EU jurisdictions. In Germany, the Federal Constitutional Court's 2021 Neubauer decision, which ordered the government to strengthen its climate legislation, has been cited as precedent in at least 14 subsequent cases across Europe.

The reality: courts can and do impose binding climate obligations. The obligations may be procedural (requiring companies to develop credible transition plans) rather than prescriptive (mandating specific percentage reductions), but the legal precedent is established and strengthening.

Myth 3: Greenwashing Litigation Is Just About Advertising Claims

There is a tendency to dismiss greenwashing cases as minor regulatory enforcement against misleading advertisements. The evidence shows these cases carry far greater strategic significance. The EU's Green Claims Directive, which entered into force in early 2026, requires companies to substantiate environmental claims with verifiable evidence and lifecycle assessment data. Violations carry penalties of up to 4% of annual turnover in the relevant member state.

Beyond advertising, greenwashing litigation increasingly targets corporate sustainability reports, ESG disclosures, and net-zero commitments. ClientEarth's case against the board of Shell (filed in 2023, proceeding through UK courts as of 2026) argues that directors breached their fiduciary duties by failing to adopt a climate strategy aligned with the Paris Agreement. This is not about a misleading advertisement: it is a direct challenge to corporate governance.

In 2025, the Austrian consumer protection agency (VKI) successfully sued Wizz Air over claims that passengers could offset their flights' carbon emissions, with the court ruling the airline's offsetting program lacked the rigor to support such claims (Austrian Supreme Court of Justice, 2025). The French Autorite de Regulation Professionnelle de la Publicite issued 47 formal rulings against environmental advertising claims in 2025, up from 12 in 2022.

The reality: greenwashing litigation is a governance and compliance risk, not merely a marketing inconvenience. It extends to transition plans, emissions disclosures, and board-level decision-making.

Myth 4: Climate Cases Take So Long That They Have No Practical Impact

Skeptics argue that the slow pace of litigation renders it strategically irrelevant for corporate planning. While individual cases can take 3 to 7 years to reach final resolution, this view ignores the interim effects. The filing of a climate lawsuit triggers immediate reputational consequences, can affect credit ratings and insurance premiums, and often prompts accelerated internal policy changes.

Research by the Oxford Sustainable Finance Group found that companies named as defendants in climate litigation experienced an average 0.4% decline in market capitalization within 10 trading days of case filing, with the effect more pronounced for companies with weaker existing climate strategies (Oxford Sustainable Finance Group, 2025). More importantly, 62% of companies that settled or lost climate cases subsequently strengthened their climate commitments beyond what was required by the court ruling or settlement terms.

The Urgenda Foundation v. State of the Netherlands case, filed in 2015 and finalized by the Dutch Supreme Court in 2019, forced the Netherlands to accelerate its emissions reduction timeline. Within three years of the ruling, the Dutch government had closed its remaining coal-fired power plants ahead of schedule and increased its 2030 reduction target from 25% to 55%.

The reality: climate litigation operates on multiple timelines simultaneously. The filing itself functions as a governance intervention, while final rulings establish binding legal precedent that affects entire industries.

What's Working

Strategic litigation by well-resourced NGOs continues to deliver precedent-setting results. ClientEarth, Urgenda, and Milieudefensie have developed sophisticated legal strategies that combine domestic law, EU law, and international human rights law. Their success rate in cases that reach final judgment exceeds 60% in EU jurisdictions (Grantham Research Institute, 2025).

Shareholder activism backed by litigation threats is proving effective. Climate Action 100+, the investor coalition representing $68 trillion in assets under management, has used the credible threat of legal action to secure climate commitments from 75% of its focus companies. In 2025, a shareholder resolution at TotalEnergies backed by institutional investors who explicitly referenced potential litigation exposure received 36% support, up from 19% in 2023.

Youth-led constitutional cases have proven particularly effective at establishing the right to a healthy environment as a justiciable right. The European Court of Human Rights' 2024 ruling in KlimaSeniorinnen v. Switzerland confirmed that states have a positive obligation under Article 8 of the ECHR to protect citizens from the effects of climate change.

What's Not Working

Transboundary enforcement remains a fundamental challenge. An EU court ruling against a European company does not automatically bind its operations in jurisdictions outside the EU. Shell's Nigerian operations, for example, are not directly affected by Dutch court orders regarding the parent company's global emissions, creating enforcement gaps that undermine the practical impact of rulings.

Attribution science, while advancing rapidly, still faces legal challenges. Courts require plaintiffs to establish causation between a specific defendant's emissions and specific climate harms. While attribution studies from institutions like the World Weather Attribution initiative are increasingly accepted as evidence, defense lawyers continue to challenge their admissibility and probative value, particularly in tort cases seeking damages.

Access to justice remains unequal. The cost of bringing complex climate litigation ranges from EUR 500,000 to EUR 5 million for a major case through to final appeal. While litigation funders are increasingly active in this space, the majority of potential plaintiffs, particularly communities in lower-income EU member states most affected by climate impacts, lack the resources to bring cases.

Key Players

Established: ClientEarth (strategic litigation across EU jurisdictions), Urgenda Foundation (precedent-setting government accountability cases in the Netherlands), Milieudefensie (Friends of the Earth Netherlands, corporate duty of care litigation), Global Witness (corporate accountability investigations and legal support), Climate Action 100+ (investor coalition using litigation-backed engagement)

Startups: Systemiq Legal (climate litigation strategy consulting), Plan A (carbon accounting platform supporting litigation evidence), Right to Know (climate disclosure transparency advocacy), Climate Litigation Accelerator (pro bono legal network for climate cases)

Investors: Children's Investment Fund Foundation (funding strategic climate litigation), European Climate Foundation (supporting legal capacity building across EU), ClimateWorks Foundation (backing litigation research and coordination), Growald Climate Fund (catalytic funding for high-impact climate cases)

Action Checklist

• Conduct a climate litigation risk assessment covering all public climate commitments, advertising claims, and ESG disclosures for legal defensibility
• Audit net-zero and emissions reduction targets against science-based methodology requirements to withstand potential duty of care challenges
• Review board-level governance processes for climate strategy to address potential fiduciary duty claims
• Ensure compliance with the EU Green Claims Directive's substantiation requirements for all environmental marketing before enforcement deadlines
• Establish a cross-functional response protocol (legal, communications, sustainability, investor relations) for potential litigation filings
• Monitor the Grantham Research Institute and Sabin Center litigation databases quarterly for cases affecting your sector or jurisdiction
• Engage with industry associations to develop sector-specific guidance on defensible climate transition planning

FAQ

Q: How likely is it that a mid-sized European company will face climate litigation? A: The probability is rising but remains concentrated among large-cap companies and high-emitting sectors. As of early 2026, approximately 80% of EU climate cases target companies with annual revenues above EUR 10 billion or national governments. However, the EU Green Claims Directive creates enforcement risk for companies of all sizes making environmental marketing claims. Mid-sized companies in energy-intensive sectors (chemicals, cement, steel, heavy manufacturing) or consumer-facing sectors with prominent sustainability branding face the highest near-term risk.

Q: What is the most effective way to reduce climate litigation exposure? A: The single most effective measure is ensuring that all public climate commitments are backed by credible, science-based transition plans with clear interim milestones, transparent methodologies, and regular progress reporting. Companies that can demonstrate good-faith effort toward Paris-aligned targets, even if they have not yet achieved them, are significantly less likely to face successful litigation. Courts have consistently distinguished between companies making genuine but imperfect progress and those making ambitious claims without credible implementation plans.

Q: Should companies avoid making public climate commitments to reduce litigation risk? A: This strategy is counterproductive. Companies that make no climate commitments face increasing regulatory risk (the CSRD mandates transition plan disclosures for large EU companies), investor pressure (Climate Action 100+ targets companies with inadequate climate strategies), and reputational damage. The evidence shows that well-substantiated, scientifically grounded commitments with transparent progress reporting reduce litigation risk compared to either silence or unsubstantiated ambition. The Sabin Center's analysis found that 78% of successful greenwashing cases involved claims that substantially exceeded the defendant's actual performance or plans, not companies that disclosed honestly about the challenges they faced.

Q: How are EU courts treating Scope 3 emissions in litigation? A: The trend is toward including Scope 3 emissions within the scope of corporate climate obligations, though the specific requirements vary by jurisdiction. The Shell ruling addressed Scope 3 directly, while subsequent cases in France and Germany have focused primarily on Scope 1 and 2 with Scope 3 as a secondary consideration. Companies in sectors with high Scope 3 profiles (financial services, retail, automotive) should anticipate increasing legal scrutiny of their value chain emissions. The CSRD's requirement for Scope 3 reporting, once fully phased in, will create an auditable evidentiary record that plaintiffs can use in future litigation.

Sources

• Grantham Research Institute on Climate Change and the Environment. (2025). Global Trends in Climate Change Litigation: 2025 Snapshot. London: London School of Economics.
• Sabin Center for Climate Change Law. (2025). Climate Change Litigation Databases: Annual Report 2025. New York: Columbia Law School.
• Swiss Re Institute. (2025). Climate Litigation and Insurance: Exposure Assessment and Market Implications. Zurich: Swiss Re.
• The Hague Court of Appeal. (2024). Milieudefensie et al. v. Royal Dutch Shell: Appeals Judgment. The Hague: Gerechtshof Den Haag.
• Oxford Sustainable Finance Group. (2025). Market Impact of Climate Litigation: Evidence from 180 Cases. Oxford: University of Oxford Smith School.
• Austrian Supreme Court of Justice. (2025). VKI v. Wizz Air Hungary: Judgment on Carbon Offset Marketing Claims. Vienna: OGH.
• European Court of Human Rights. (2024). KlimaSeniorinnen v. Switzerland: Grand Chamber Judgment. Strasbourg: ECHR.