Green Claims Directive: Proof Obligation for Sustainability Advertising

Introduction: The End of Generic Green Claims

The era of vague sustainability marketing is officially ending. The new European Union (EU) Directive 2024/825 on 'Empowering Consumers for the Green Transition' (ECGT Directive) will start to apply from 27 September 2026. It amends existing EU consumer laws and imposes new consumer information requirements that will require website changes for traders selling to EU customers. It shifts the burden of proof to the company. You cannot simply claim to be green anymore. You must prove it with specific, verifiable data.

This landmark directive represents the most comprehensive overhaul of green marketing rules in EU history. Recent studies by the European Commission found that over half of environmental claims in the EU were misleading or unfounded. The ECGT Directive responds to this crisis of consumer trust by establishing strict proof obligations that will fundamentally reshape how businesses communicate their environmental performance.

For legal professionals advising companies with EU market exposure, understanding these new proof obligations is critical. The directive doesn't merely regulate what companies can say about sustainability – it establishes stringent requirements for how they must prove those claims.

Core Proof Obligations Under the ECGT Directive

The Fundamental Shift in Burden of Proof

The ECGT works on a "blacklist" principle. This means it establishes a list of marketing behaviours that are prohibited in all circumstances. Regulators do not need to prove a consumer was tricked. The simple use of a banned term is enough to constitute a violation. This approach fundamentally alters the legal landscape by removing the traditional requirement for authorities to prove consumer deception.

The Directive notably enhances the existing EU Consumer Protection Directives (2005/29/EC and 2011/83/EU) by: Updating the list of prohibited misleading commercial practices, explicitly including certain environmental claims into Annex I of the Unfair Commercial Practices Directives and establishing new substantiation requirements.

Specific Categories of Proof Requirements

The ECGT Directive establishes distinct proof obligations across several categories:

Source: Cooley LLP ECGT Analysis, 2026; Senken.io Green Claims Analysis, 2026

Banned Practices and Absolute Prohibitions

Generic Environmental Claims Without Substantiation

Generic environmental claims without recognised excellent environmental performance: Terms like "environmentally friendly," "climate friendly," "green," or "biodegradable" are prohibited unless you can demonstrate outstanding, relevant performance that's been certified or officially recognised. Words like "eco-friendly," "sustainable," "green," and "climate-friendly" can no longer appear in marketing unless you can prove exceptional environmental performance. Not average. Exceptional. And you need third-party verification to back it up.

This represents a significant departure from previous advertising standards, where such terms could be used with minimal substantiation. Under the ECGT, companies must demonstrate measurable environmental excellence that has been independently verified.

Offset-Based Climate Claims

Offset-based product claims: Any claim that a product has a "neutral, reduced or positive impact in terms of greenhouse gas emissions" when it's based on offsetting is flatly banned. This kills product-level "climate neutral" or "CO₂ neutral" labels that rely on carbon credits. The EU has effectively criminalized this practice for products.

To write ECGT-compliant green claims, replace generic language with specific, verifiable statements. For carbon claims, demonstrate real emissions reductions, not just offsets. Companies can still use carbon offsetting for corporate-level communications, but product-level neutrality claims must be based on actual value chain reductions.

Self-Created Sustainability Labels

The era of the self-certified label is over. Many brands have created their own icons that look like official certifications. The ECGT bans the display of any sustainability label that is not based on a certification scheme or established by public authorities.

This prohibition extends beyond obvious logos to include certain visual elements, such as green leaves, water drops, or similar nature-related icons, may be interpreted by consumers as implicit environmental claims, that in combination with a claim made in written form or with a logo, depending on the context and presentation, could be subject to the requirements of the ECGT Directive. Overall, traders should exercise caution when using icons, symbols, images, or artwork that could be perceived as (implicit) environmental claims or trust marks.

Third-Party Verification Requirements

Mandatory Independent Monitoring

From 27 September 2026, consumer-facing claims will need to be supported by certification or sustainability labelling schemes with independent third-party verification, creating a greater opportunity for brand differentiation and to communicate climate action with greater confidence.

The directive establishes specific requirements for third-party verification bodies:

Sources: 1% for the Planet Compliance Guide, 2026; Carbon Trust ECGT Analysis, 2026

Legal Separation Requirements

Even if there were certain international standards that might allow for the scheme owner and third party to be the same, compliance with the provisions of the ECGT Directive can only be achieved if the scheme owner and the third party are legally separated, i.e. there are two different legal entities. This requirement eliminates many existing self-verification models.

Substantiation Standards for Future Environmental Claims

Implementation Plan Requirements

Under the ECGT Directive additional legal requirements apply to environmental claims related to future environmental performance (e.g. "climate-neutral by 2030/50"): Such claims require a detailed and realistic implementation plan, including measurable and time-bound targets, and should be regularly verified by an independent third-party expert. The commitments and targets supporting the claim must be clear, objective, verifiable, and publicly available (e.g. by using a QR code).

The directive establishes specific elements that must be included in implementation plans:

• Clear, objective, publicly available and verifiable commitments

• Measurable and time-bound targets

• Resource allocation details

• Regular third-party verification schedule

• Public accessibility of the implementation plan

Ongoing Monitoring Obligations

Statements like "net zero by 2035" must be backed by a clear implementation roadmap, measurable targets, and monitoring mechanisms. This creates ongoing legal obligations beyond the initial claim publication, requiring companies to maintain verification systems throughout the timeline of their commitments.

Enforcement and Penalty Framework

Financial Penalties

The ECGT Directive establishes severe financial consequences for non-compliance. Fines for noncompliance can be up to 4% of a trader's annual turnover in the relevant EU Member State (or more if the relevant EU Member State sets a higher maximum under national law). Penalties start at 4% of annual turnover or fixed fines reaching €3.5M.

Source: Gasilov Group Enforcement Analysis, 2026

Recent Enforcement Examples

Early enforcement actions demonstrate the serious consequences of non-compliance. Shein paid €1 million for calling their collection "sustainable" without evidence. Armani paid €3.5 million for claiming ethical responsibility while their supply chain had illegal labor practices. Apple got banned from using "carbon neutral" in Germany because their offsetting approach relied on short-term reforestation leases that the court deemed insufficient for a credible carbon neutral claim.

Class Action Exposure

The relevant consumer laws are also in scope of the EU's Representative Actions Directive, which allows claimants to bring class-action-style claims in the EU based on noncompliance with these obligations. This creates additional liability exposure beyond regulatory enforcement.

Implementation Timeline and Practical Steps

Critical Dates

The implementation timeline creates specific obligations for companies:

Sources: Loyens & Loeff Implementation Guide, 2026

No Legacy Protection

The Commission clarifies that the Directive applies to all commercial practices in the EU market as of September 27, 2026. This means that products already on shelves are technically subject to the rules, regardless of when they were printed. The Q&A explicitly states that traders have "practical options to ensure compliance," such as using stickers to cover old claims or adding supplementary information at the point of sale.

Legal Documentation and Evidence Requirements

Evidence Quality Standards

For each claim, ask: Do we have the data, methodology, and documentation to defend this in an audit or court challenge? Is the evidence current (updated within the past five years)? Is it centrally stored and accessible? These questions reflect the heightened evidentiary standards under the ECGT.

Companies are expected to verify the claims they make, not simply trust what suppliers report. This mirrors the ECGT's substantiation requirement and signals a global regulatory convergence: the era of accepting environmental data at face value is ending.

Data Authentication Requirements

The answer is not more reporting. It is data certification at the point of collection. This article explains why the ECGT Directive demands a shift from disclosure-based compliance to evidence-based trust.

Companies must establish systems to ensure:

• Data authenticity and integrity

• Traceability to original sources

• Independent verification of collection methods

• Regular updates and validation

• Secure storage and accessibility

Global Applicability and Extraterritorial Reach

Worldwide Application

A common misconception is that EU laws only apply to EU companies. This is false. The ECGT applies to any trader engaging in commercial practices towards EU consumers. Yes, the directive applies to any trader engaging in commercial practices towards EU consumers, regardless of the company's headquarters. US, Canadian, or Asian companies selling goods online or in physical stores in the EU must comply with these regulations.

The extraterritorial scope extends to digital commerce: If your website ships to the EU and makes a claim like "Carbon Neutral Shipping," you are subject to these laws.

B2B Implications

The ECGT addresses Business-to-Consumer (B2C) practices, and EU case law also supports ECGT requirements being used to define 'misleading' advertising in a Business-to-Business (B2B) context. The implications for B2B businesses are direct and material. Sustainability claims are inherently lifecycle-based, and upstream claims—across product composition, manufacturing, supply chain, and R&D—are often carried into consumer-facing communications.

Strategic Recommendations for Legal Compliance

Immediate Assessment Requirements

Legal counsel should advise clients to undertake comprehensive claims audits immediately. Do an internal assessment on whether you are exposed to ECGT by: a. Mapping all EU consumer communication touchpoints b. Create a list of the various B2C claims and labels being used c. Check the use of implicit claims such as icons, symbols, images, or artwork that could be perceived as or associated with environmental sustainability d. Engage with your buyers and suppliers to understand changes in their needs

Cross-Functional Governance

Sustainability owns the claims policy and sets the evidence standards. You define what "good enough" substantiation looks like and maintain the central repository. Legal/Compliance interprets ECGT, national consumer protection law, and DACH case law. They provide sign-off on high-risk claims and flag regulatory changes.

Establishing proper governance requires:

• Clear allocation of responsibility between legal, marketing, and sustainability teams

• Documented evidence standards and approval processes

• Regular review cycles for existing claims

• Pre-approval requirements for new environmental communications

• Integration with existing brand governance structures

Risk-Based Prioritization

Use the ECGT blacklist and recent DACH case law to identify claims that are high-risk. Generic green claims, offset-based neutrality claims, and weak future promises should be at the top of your review list.

Interaction with Other EU Regulations

CSRD Relationship

CSRD ensures disclosure. The ECGT demands proof. These are fundamentally different requirements, and meeting one does not satisfy the other. In practical terms, a company can be fully CSRD-compliant and still make environmental claims that fail the ECGT substantiation test.

Companies must understand that compliance with sustainability reporting directives does not automatically ensure compliance with advertising requirements under ECGT.

Green Claims Directive Status

The EU Green Claims Directive is not expected to enter into force. The European Commission announced the withdrawal of the legislative proposal in June 2025. The legislative process was suspended after the conservative European People's Party (EPP) and Italy withdrew their support. Important: Even without the Green Claims Directive, strict anti-greenwashing rules will apply from September 27, 2026 through the Empowering Consumers for the Green Transition Directive (ECGT).

Conclusion: A New Era of Accountability

The ECGT Directive represents a fundamental shift in the legal landscape for sustainability communications. The ECGT Directive offers a coherent legal framework to demonstrate that ESG communications are not merely aspirational narratives but grounded in verifiable and substantiated commitments.

The ECGT goes beyond establishing rules on green advertising; it makes sustainability communications a matter of legal and operational responsibility for companies. For legal professionals, this creates new areas of liability and compliance oversight that require immediate attention.

The directive's proof obligations fundamentally alter the relationship between marketing claims and legal compliance. Companies can no longer rely on vague aspirational language or unsubstantiated promises. Instead, they must establish robust evidentiary systems, secure third-party verification, and maintain ongoing documentation of their environmental performance.

As enforcement begins in September 2026, companies that fail to adapt to these new proof obligations face significant financial and reputational risks. The early enforcement examples demonstrate that regulators are prepared to impose substantial penalties for non-compliance. For legal advisors, ensuring client readiness for these new requirements is not just a matter of regulatory compliance—it's essential for business continuity in EU markets.

The ECGT Directive marks the end of the era where sustainability was primarily a marketing consideration. From September 2026, it becomes a matter of legal proof, with standards as rigorous as those applied to financial disclosures. Legal professionals must guide their clients through this transformation to ensure both compliance and competitive advantage in the new regulatory environment.