Communicating sustainability effectively is a genuine competitive advantage. Communicating it poorly is a reputational risk and, from 2024, a legal risk as well. Greenwashing has gone from being a questionable practice to becoming a regulated area within the European Union, with direct consequences for companies that make environmental claims they cannot substantiate. Knowing where the line lies between genuine sustainable communication and greenwashing is not just a question of ethics: it is a question of risk management.
What is greenwashing and why is it a growing reputational and legal risk in 2026?
Greenwashing is the practice of presenting products, services or the company itself as more sustainable than they actually are, whether through omission, exaggeration or unverifiable claims. The European directive against greenwashing, Adopted in 2024 and currently being transposed into national law by Member States, the directive prohibits generic environmental claims without verifiable evidence, sustainability labels not accredited by third parties, and communications that mislead consumers about a product’s actual impact. Penalties include fines, the withdrawal of communications and collective consumer actions. In Spain, the CNMC has already initiated proceedings against companies for misleading environmental advertising.
The 7 sins of greenwashing: how to spot them in your own communications
The ‘7 Sins’ model, documented by TerraChoice and widely adopted in the field of sustainable marketing, provides a practical framework for to audit your own green communications before a regulator or the media does.
What makes sustainability communication credible?
The difference between credible green communication and communication suspected of greenwashing boils down to four criteria. The first is the details: verifiable facts as opposed to generic adjectives. The second is the independent source: certifications from recognised third parties versus in-house seals. The third party is internal consistency: that the external message reflects actual practices within the organisation – exactly the same logic that applies to the B2B corporate branding. And the fourth, perhaps the most distinctive, is the acknowledgement of what has not yet been achieved: Companies that acknowledge their limitations and communicate their commitments with specific deadlines inspire greater confidence than those that project an image of perfect sustainability that nobody believes.
How to build your company’s sustainability narrative step by step
The starting point is always internal: What do we actually do? Before communicating anything, an honest assessment of the company’s current impact is required, identifying which practices are genuinely sustainable, which are in the process of being improved, and which are not yet. This internal overview is the only valid starting point for a credible green narrative.
From that point on, the narrative unfolds in three stages: What to say now (verifiable achievements), what to commit to by a specific date (ongoing improvements with specific milestones) and what not to say just yet (which is at an early stage or lacks sufficient data). The frequency and channels of communication must be tailored to the type of audience: investors and partners require sustainability reports based on GRI or CSRD methodology; end customers need clear, concrete messages free from technical jargon; and the media are looking for new and comparable data.
Certifications and labels that bolster the credibility of your green messaging
Third-party certifications are the most effective way of safeguarding sustainable communication against accusations of greenwashing. The main ones in the Spanish and European context are FSC (responsible forest management, for paper and timber products), European Ecolabel (for products and services with a verified low environmental impact), ISO 14001 (environmental management system, applicable to any organisation), Biosphere (sustainable tourism, with a strong presence in the Spanish hotel sector) and B Corp (the most rigorous and globally recognised standard, which assesses social and environmental impact in a comprehensive manner).
Achieving each one requires a different level of effort: ISO 14001 is achievable for medium-sized companies within six to twelve months; B Corp certification requires a more profound transformation of management practices. To report each certification correctly means always providing a link to the official register confirming its validity, Never use the logo without checking that the licence is up to date.
Green marketing and team training: who needs to know what
Credible, sustainable communication is not the sole responsibility of the marketing team: it requires alignment between marketing, sales, customer service and management. The sales team needs to know what claims they can and cannot make when a customer asks about a product’s sustainability. The customer service team needs to handle enquiries and complaints relating to green claims correctly, and to do so, they need a solid foundation in communication skills. The marketing department needs to have a thorough understanding of the legal requirements of the European Directive and the standards for sustainable communication. And senior management needs to understand that the Sustainability is a business decision before it is a communications decision.
From the Educa.Pro Marketing Catalogue You’ll find specialist training in green marketing and sustainable communication, which is eligible for funding through FUNDAE for the whole team.
Greenwashing is not just a communication error: it is a sign that the sustainability strategy is not sufficiently developed. Companies that build the reality first and then communicate it have a green narrative that no regulator or media outlet can question.
