The end of unverified sustainability claims

For years, sustainability in the events world has run largely on trust. A venue says it is green, an organiser repeats it in a proposal, and a delegate takes it on faith. That arrangement is coming to an end.

From 27 September 2026, the EU’s Empowering Consumers for the Green Transition Directive (2024/825) comes into force. It is designed to stamp out greenwashing by holding businesses to a simple standard: an environmental claim is only as good as the evidence behind it. Self-reporting is no longer enough. Claims now need to be independently verifiable.

The UK’s Green Claims Code has been in place since April 2025, enforced by the Competition and Markets Authority, which has the power to fine businesses up to 10% of global turnover for unsubstantiated green claims. The direction of travel is unmistakable, and it applies as much to the events and hospitality sector as to any consumer brand.

Why this matters for venus, specifically?

Most venues are already doing genuine, meaningful work. Solar panels, locally sourced catering, waste reduction, energy monitoring. The problem has never been effort. The problem is evidence. Under the new rules, saying “we are a sustainable venue” without independent substantiation is exactly the kind of claim regulators are now targeting. The risk is no longer reputational alone. It is legal and financial.

Procurement is where this is likely to impact first. As the rules take effect, carbon and sustainability data moves from a nice-to-have towards a qualifying question, and venues that cannot produce credible, evidenced numbers risk being filtered out before a conversation reaches commercial terms.

The sustainability paradox

There is an awkward truth at the heart of the industry. Some of the events least likely to measure their own footprint are the ones with sustainability in their title. Smart-energy expos, environmental summits, green-tech shows: events built to advance the cause, yet often silent on the emissions they themselves generate.

The scale of the gap is striking. Of the roughly 400 events that have adopted the Better Stands Initiative, one of the industry’s most visible sustainability schemes, only a handful are sustainability-focused events themselves. The initiative is a genuine step forward on reusable stands, but it also shows how few green-themed events are yet turning the lens on their own impact.

Part of the reason is that these events face the hardest version of the problem. Attendee and speaker travel typically accounts for 70% to 90% of an event’s total carbon footprint, and a summit that draws an international audience cannot recycle or digitise its way out of that. Freight, venue energy, and catering add to it. Local recycling bins and digital badges are visible gestures, but they rarely touch the parts of the footprint that matter most.

This is not a reason for green-themed events to stop convening. It is a reason to measure honestly and say what is actually being done, rather than lean on the theme of the event as if it were the same thing as evidence. An environmental summit that can show its footprint, and its plan to reduce it, is far more credible than one that simply assumes its subject matter speaks for itself.

The market is already moving

This is not a distant hypothetical. Certification and reporting standards across hospitality and events are tightening now, with independent third-party auditing fast becoming the expected baseline rather than a premium add-on. Schemes that have relied on self-assessment are retrofitting verification ahead of the September deadline.

Where One Tribe fits

One Tribe has been providing event-specific carbon reporting since 2024, well before verification became a regulatory requirement. Our approach was built around evidence from the outset, rather than adapted to meet a deadline.

Our event calculations are built on a calculator developed with our carbon accounting partners, Tunley Environmental, using recognised ISO and GHG Protocol methodologies. That gives event footprints a solid, defensible foundation.

Every event measured produces a live impact page: a permanent, shareable record built on that methodology, which venues and organisers can put in front of a client at any time.

What a venue can do now

You do not need to wait for a perfect solution to start reducing your exposure:

• Measure first, on a credible basis. An event footprint calculated on recognised methodology is a far stronger position than an estimate or a round number.
• Keep the evidence. A live, shareable impact page is a record you can point a client, or a regulator, to at any time.
• Be precise in your language. There is a meaningful difference between claiming to be “a sustainable venue” and describing the specific, measured actions you are taking. The second is defensible. The first, increasingly, is not.

The shift from intention to evidence is not a threat to venues doing real work. It is an opportunity to stand apart from those who are not.

The venues that can prove it are about to have a genuine advantage over the ones still asking everyone to take their word for it.

Evidence over intent. That is where this is all heading, and it is a direction we welcome.