Deep dive: Corporate climate commitments & accountability — what's working, what's not, and what's next

Over 9,000 companies worldwide have now set climate targets through voluntary frameworks, representing more than $40 trillion in combined annual revenue. Yet the gap between commitment and delivery continues to widen. A 2025 analysis by the NewClimate Institute found that only 4% of the world's largest corporations are on track to meet their stated net-zero targets, while the remaining 96% either lack credible transition plans, rely heavily on offsets, or have quietly diluted their original ambitions. Understanding what separates effective climate accountability from performative pledging has become essential for investors, regulators, consumers, and the companies themselves.

Why It Matters

Corporate emissions represent a decisive share of the global total. The Carbon Disclosure Project (CDP) reports that just 500 companies account for approximately 12% of global greenhouse gas emissions. When Scope 3 value chain emissions are included, the 2,000 largest publicly listed firms influence roughly 40% of total anthropogenic emissions. The credibility and enforceability of their climate commitments directly shapes whether the Paris Agreement's 1.5C target remains achievable.

The UK sits at the centre of this accountability ecosystem. The Financial Conduct Authority (FCA) mandated Task Force on Climate-related Financial Disclosures (TCFD)-aligned reporting for UK-listed companies beginning in 2022, and the UK government extended similar requirements to large private companies and financial institutions through the Companies (Strategic Report) (Climate-related Financial Disclosure) Regulations 2022. The UK's Transition Plan Taskforce (TPT) published its final Disclosure Framework in October 2023, establishing a gold standard for corporate transition plan credibility that is now being adopted by regulators internationally.

The European Union's Corporate Sustainability Reporting Directive (CSRD), which began phasing in from January 2024, requires approximately 50,000 EU and UK-connected companies to report on climate targets, transition plans, and progress against detailed European Sustainability Reporting Standards (ESRS). Meanwhile, the International Sustainability Standards Board (ISSB) standards IFRS S1 and S2, endorsed by the UK government, are creating a global baseline for climate disclosure that makes vague commitments increasingly difficult to sustain.

The financial stakes are substantial. BlackRock, the world's largest asset manager with $10.5 trillion under management, has stated that companies without credible transition plans face capital allocation disadvantages. A 2025 study by the London School of Economics Grantham Research Institute found that FTSE 100 companies with independently assessed, science-aligned transition plans traded at a 6-8% valuation premium relative to peers with weaker climate governance.

What's Working

Science Based Targets Initiative Adoption

The Science Based Targets initiative (SBTi) has emerged as the most widely adopted framework for corporate emissions reduction commitments, with over 7,500 companies having committed or set validated targets by early 2026. SBTi's methodology requires companies to set near-term targets (5-10 years) aligned with limiting warming to 1.5C, covering Scope 1, 2, and material Scope 3 emissions categories.

The framework's strength lies in its specificity. Unlike generic "net-zero by 2050" pledges, SBTi-validated targets specify annual emissions reduction rates, identify which Scope 3 categories are covered, and require companies to demonstrate that their targets are consistent with sector-specific decarbonization pathways. Companies that fail to submit validation documentation within 24 months of commitment are removed from the SBTi database, creating a meaningful accountability mechanism.

UK adoption has been particularly strong. Over 600 UK-headquartered companies have SBTi-validated targets, including 42 of the FTSE 100. Companies with validated targets have, on average, reduced absolute Scope 1 and 2 emissions by 4.2% annually between 2020 and 2025, compared to 1.1% for companies with unvalidated pledges and 0.3% for companies with no public targets, according to analysis by the Transition Pathway Initiative (TPI).

Mandatory Disclosure Regimes

The shift from voluntary to mandatory climate disclosure represents the single most significant accountability development of the past five years. The UK's TCFD mandate, the EU's CSRD, and the ISSB standards have collectively moved climate reporting from a corporate communications exercise to a compliance obligation with legal consequences.

The impact is measurable. A 2025 study by the Carbon Tracker Initiative found that the quality of climate-related financial disclosures by FTSE 350 companies improved by 45% between 2021 and 2025, as measured by completeness, consistency, and connection to financial statements. Critically, mandatory disclosure has forced companies to quantify transition risks, stranded asset exposures, and capital expenditure misalignment that voluntary reporting frequently obscured.

The FCA's supervision of TCFD compliance has also created enforcement precedent. In 2025, the FCA issued its first formal warning to a FTSE 250 company for materially misleading climate disclosures, signalling that reporting quality is now subject to regulatory scrutiny comparable to financial reporting standards.

Investor Engagement and Stewardship

Institutional investors have developed increasingly sophisticated approaches to climate accountability. Climate Action 100+, a coalition of over 700 investors managing $68 trillion, has engaged directly with the 170 highest-emitting companies globally. The initiative's Net Zero Company Benchmark assesses companies across 12 indicators including emissions reduction targets, capital allocation alignment, and lobbying policy consistency.

In the UK, the Stewardship Code 2020 requires asset managers and asset owners to report on how they have exercised stewardship to address climate risks. The UK Investment Association reported that 85% of its members now incorporate climate transition assessments into proxy voting decisions, up from 35% in 2020. This has produced tangible results: shareholder resolutions on climate strategy received majority support at 23 UK-listed companies in 2024-2025, compared to just 4 in 2019-2020.

What's Not Working

Scope 3 Measurement and Target Setting

Scope 3 emissions, which typically represent 65-95% of a company's total carbon footprint, remain the most significant gap in corporate climate accountability. Despite SBTi requiring Scope 3 targets when these emissions exceed 40% of total emissions, the quality of Scope 3 data remains poor.

A 2025 analysis by the Partnership for Carbon Accounting Financials (PCAF) found that 70% of corporate Scope 3 disclosures rely primarily on spend-based estimation rather than activity-based measurement. Spend-based approaches use economic input-output models to estimate emissions from procurement spending, producing results with uncertainty ranges of plus or minus 50-100%. This means a company reporting 1 million tonnes of Scope 3 emissions may actually be producing anywhere between 500,000 and 2 million tonnes, rendering year-over-year comparisons nearly meaningless.

The challenge is structural. A typical consumer goods company has 5,000-15,000 direct suppliers, the majority of which do not measure or report their own emissions. Cascading reporting requirements through supply chains requires significant investment in supplier capacity building and data infrastructure that most companies have not yet made.

Carbon Offset Reliance

The reliance on carbon offsets to bridge the gap between stated ambitions and actual emissions reductions remains one of the most contentious issues in corporate climate accountability. A 2024 investigation by The Guardian and Corporate Accountability found that 73% of corporate net-zero plans reviewed included offset provisions covering 20-50% of residual emissions, with several high-profile companies planning to offset more than they reduce.

The integrity of offsets has been severely undermined by quality concerns. Studies published in Science (West et al., 2023) found that over 90% of rainforest carbon credits issued by Verra, the largest voluntary carbon market standard, did not represent genuine emissions reductions. While the voluntary carbon market has since implemented reforms, including Verra's updated methodology for jurisdictional REDD+ programmes, corporate buyers face significant reputational and regulatory risk from offset reliance.

The SBTi's controversial 2024 decision to allow limited use of Environmental Attribute Certificates for Scope 3 abatement, subsequently revised after significant stakeholder pushback, illustrates the ongoing tension between practical flexibility and environmental integrity in target-setting frameworks.

Greenwashing and Target Dilution

A concerning trend has emerged in which companies quietly weaken their climate commitments after initial announcements. The NewClimate Institute's 2025 Corporate Climate Responsibility Monitor found that 24% of the 51 largest corporate emitters reviewed had revised their targets downward or extended their target dates since initial publication, often without public announcement.

Common dilution tactics include: shifting from absolute emissions targets to intensity-based targets that allow emissions to grow with revenue; excluding acquired or divested business units from baseline recalculations; reclassifying Scope 3 categories as "not material" to reduce target coverage; and replacing near-term reduction commitments with longer-dated aspirational goals.

The UK's Advertising Standards Authority (ASA) and Competition and Markets Authority (CMA) have begun enforcement actions against misleading environmental claims, issuing formal rulings against companies including Shell, HSBC, and Repsol for advertisements that overstated their climate credentials. However, enforcement capacity remains limited relative to the scale of potentially misleading corporate climate communications.

Transition Plan Credibility

While the UK's Transition Plan Taskforce framework represents a significant advance in defining what constitutes a credible corporate transition plan, actual plan quality remains highly variable. A 2025 assessment by Carbon Tracker found that only 15% of FTSE 100 transition plans included quantified capital expenditure alignment with their stated climate targets, and only 22% addressed the revenue implications of their transition strategy.

The gap between having a plan and having a credible plan reflects deeper challenges: many companies lack internal carbon pricing mechanisms to guide capital allocation; board-level climate competence remains insufficient (only 28% of FTSE 350 boards have directors with material climate expertise); and executive compensation structures rarely incorporate climate performance metrics with meaningful financial weighting.

What's Next

Regulatory Convergence and Enforcement

The next phase of corporate climate accountability will be defined by regulatory enforcement rather than voluntary ambition. The EU's CSRD implementation, which requires third-party assurance of sustainability reporting, will create an audit trail comparable to financial statements. The UK is expected to adopt ISSB-aligned mandatory reporting requirements by 2027, building on existing TCFD mandates.

Enforcement is likely to intensify. The FCA has signalled that climate disclosures will be subject to the same supervisory scrutiny as financial reporting. The European Securities and Markets Authority (ESMA) has established a dedicated sustainability reporting supervision function. Legal liability for misleading climate disclosures is expanding through both regulatory action and private litigation, with ClientEarth's 2023 case against Shell's directors establishing precedent for holding individual board members accountable for inadequate climate governance.

Supply Chain Decarbonization Infrastructure

Addressing the Scope 3 challenge requires fundamentally new data infrastructure. The Partnership for Carbon Accounting Financials, the World Business Council for Sustainable Development's Pathfinder Framework, and the Open Footprint Forum are developing standardised primary data exchange protocols that will enable companies to share verified emissions data across supply chains. Early adoption by major procurement organisations including the UK Government's Crown Commercial Service and Walmart's Project Gigaton suggest that supplier-level emissions reporting will become a procurement condition rather than a voluntary exercise within 3-5 years.

Climate Litigation as Accountability Mechanism

Climate litigation is emerging as a powerful complement to regulatory enforcement. The Grantham Research Institute tracks over 2,700 climate-related legal cases globally, with corporate greenwashing and inadequate transition planning becoming the fastest-growing case categories. In the UK, ClientEarth's legal actions and the Advertising Standards Authority's enforcement decisions have established that corporate climate claims must be substantiated, specific, and consistent with actual business strategy.

The combination of mandatory disclosure, investor stewardship, and litigation risk is creating a convergent accountability framework in which the cost of unsubstantiated climate commitments increasingly exceeds the cost of genuine decarbonization investment.

Corporate Climate Commitment Quality: Assessment Framework

Dimension	Weak	Developing	Strong	Best Practice
Target Scope	Scope 1-2 only	Scope 1-2 + partial Scope 3	Full material Scope 3	SBTi-validated with FLAG targets
Transition Plan	Aspirational narrative	High-level milestones	Quantified capex alignment	TPT Framework-compliant
Governance	ESG committee only	Board-level oversight	Board climate competence	Exec comp tied to targets
Disclosure Quality	Basic CDP response	TCFD-aligned	ISSB/CSRD compliant	Third-party assured
Offset Strategy	Offsets for 30%+ residual	Offsets for 10-30%	Offsets for <10% residual only	No offsets; direct reductions only
Progress Tracking	Annual qualitative update	Emissions inventory published	Independently verified data	Real-time dashboard with MRV

Action Checklist

• Assess existing climate commitments against the SBTi Corporate Net-Zero Standard and the UK Transition Plan Taskforce Disclosure Framework
• Conduct a Scope 3 materiality assessment identifying which value chain categories represent more than 5% of total emissions
• Transition Scope 3 measurement from spend-based to activity-based methodologies for top five material categories
• Review carbon offset portfolio for alignment with ICVCM Core Carbon Principles and reduce offset reliance to below 10% of total abatement strategy
• Establish board-level climate competence through director training or recruitment, targeting at least two directors with material climate expertise
• Integrate climate performance metrics into executive compensation with minimum 15% weighting
• Develop a quantified transition plan that specifies capital expenditure allocation, revenue implications, and interim milestones aligned with sectoral decarbonization pathways
• Prepare for ISSB/CSRD-aligned mandatory reporting by establishing internal controls and data governance equivalent to financial reporting standards
• Engage top 50 suppliers (by emissions contribution) with primary data sharing requirements and capacity-building support
• Commission independent third-party verification of emissions data and target progress annually

FAQ

Q: What distinguishes a credible corporate climate commitment from a performative one? A: Credible commitments share several characteristics: they are validated by an independent body (such as SBTi), cover all material emission scopes including Scope 3, include near-term interim targets (not just long-dated goals), are supported by quantified capital expenditure plans, and are subject to regular independent verification. Performative commitments tend to be aspirational, lack specificity about how targets will be achieved, rely heavily on offsets, and are not connected to business strategy or capital allocation decisions.

Q: How are UK regulatory requirements for climate disclosure evolving? A: UK-listed companies are already required to report in line with TCFD recommendations. The UK government has endorsed the ISSB standards (IFRS S1 and S2) and is expected to mandate their adoption by 2027. The FCA is increasing supervisory scrutiny of climate disclosure quality, and the UK Transition Plan Taskforce framework is expected to become a de facto regulatory requirement for large companies. Companies should prepare for a regime where climate disclosures carry legal liability comparable to financial statements.

Q: What is the current state of Scope 3 emissions reporting? A: Scope 3 reporting has improved in coverage but not in quality. Approximately 60% of FTSE 100 companies now disclose some Scope 3 emissions, but the majority rely on spend-based estimates with uncertainty ranges of plus or minus 50-100%. The key development is the emergence of primary data exchange protocols that enable supplier-level emissions reporting. Companies should prioritise transitioning their top 20-30 suppliers to activity-based reporting within the next two years.

Q: Should companies still purchase carbon offsets? A: Carbon offsets have a limited but legitimate role when used correctly. Best practice, aligned with the Voluntary Carbon Markets Integrity Initiative (VCMI) Claims Code, is to use offsets only for genuinely residual emissions that cannot be reduced through direct action, and only credits that meet the Integrity Council for the Voluntary Carbon Market (ICVCM) Core Carbon Principles. Offsets should never substitute for direct emissions reductions, and companies should transparently report offset volumes separately from reduction achievements. The direction of travel is clearly toward minimising offset reliance.

Q: How does climate litigation affect corporate climate strategy? A: Climate litigation creates material legal and financial risk for companies with unsubstantiated or misleading climate commitments. Cases like ClientEarth v. Shell's directors have established that board members can be held personally liable for inadequate climate governance. The ASA and CMA enforce against misleading environmental advertising claims. Companies should ensure that all public climate claims are substantiated, specific, and consistent with actual business strategy and capital allocation. Legal review of climate communications is now a governance best practice.

Sources

• NewClimate Institute and Carbon Market Watch. (2025). Corporate Climate Responsibility Monitor 2025. Cologne: NewClimate Institute.
• Carbon Disclosure Project. (2025). CDP Global Climate Report 2025: Tracking Corporate Emissions and Targets. London: CDP.
• UK Transition Plan Taskforce. (2023). Disclosure Framework: Final Report. London: TPT Secretariat.
• Grantham Research Institute on Climate Change and the Environment. (2025). Global Trends in Climate Change Litigation: 2025 Snapshot. London: London School of Economics.
• Science Based Targets initiative. (2025). SBTi Progress Report 2025: Tracking Corporate Climate Action. London: SBTi.
• Carbon Tracker Initiative. (2025). Absolute Impact 2025: Assessing FTSE 350 Climate Disclosure Quality. London: Carbon Tracker.
• Transition Pathway Initiative. (2025). State of Transition Report 2025: Management Quality and Carbon Performance of the World's Largest Companies. London: TPI.