Greenwashing costs businesses millions in fines and consumer trust. With the EU ECGT Directive enforcement starting September 2026, detecting greenwashing in your own marketing — and your competitors' — has never been more important.
What Is Greenwashing?
Greenwashing is the practice of making misleading environmental claims to appear more sustainable than reality supports. It ranges from vague buzzwords ("eco-friendly") to outright false claims ("100% carbon neutral" through offset purchases).
The 7 Sins of Greenwashing
TerraChoice identified these common greenwashing patterns, all of which the ECGT Directive now addresses:
- Sin of the Hidden Trade-Off: Highlighting one green attribute while ignoring significant environmental impacts elsewhere
- Sin of No Proof: Making claims that cannot be substantiated with accessible evidence
- Sin of Vagueness: Using broad terms like "natural" or "green" without definition
- Sin of Irrelevance: Making truthful but unhelpful claims (e.g., "CFC-free" when CFCs are already banned)
- Sin of Lesser of Two Evils: Making green claims about an inherently harmful product category
- Sin of Fibbing: Making factually false environmental claims
- Sin of Worshipping False Labels: Using fake certification logos or self-created labels
How to Detect Greenwashing on Websites
Step 1: Look for Generic Claims
Search for terms like "eco-friendly", "sustainable", "green", "natural", "carbon neutral". Under ECGT, these require substantiation.
Step 2: Check for Evidence
For each claim found, ask: Is there a link to a certification, a third-party audit, or specific data backing this claim? If not, it's likely greenwashing.
Step 3: Verify Certifications
If a sustainability label is displayed, verify it's a recognized certification (EU Ecolabel, FSC, MSC, B Corp) and not a self-created logo.
Step 4: Check Offset Claims
Claims of "carbon neutral" or "climate neutral" that rely on purchasing carbon credits are now restricted under ECGT Art. 3(4).
Step 5: Automated Scanning
Manual checks don't scale. Use automated tools to scan your entire website — including meta tags, alt text, and dynamically loaded content — against the full list of 28 ECGT-regulated terms.
Red Flags to Watch For
- Environmental claims without links to evidence or certifications
- Use of green imagery (leaves, trees, earth) without substantive claims
- Claims about future sustainability goals without current actions
- Prominent display of carbon offset purchases as "carbon neutral"
- Self-created "eco" labels or badges
- Vague percentages without baselines ("50% less emissions" — compared to what?)
Tools for Detection
| Method | Coverage | Speed | Accuracy |
|---|---|---|---|
| Manual review | 1 page/hour | Slow | High |
| ECGT pattern matching | 1 page/second | Fast | Good (28 terms) |
| ClimateBERT AI | 1 page/3 seconds | Medium | Very good (86%) |
| Combined (pattern + AI) | 1 page/3 seconds | Medium | Best |