Sustainability messaging is having a moment right now, but it’s not always for the right reasons.
Over the past year, environmental claims have come under sharper scrutiny from regulators, industry bodies and the public. This scrutiny is not limited to one sector. Energy, heating, transport and food are all being assessed side by side, with regulators taking a more holistic view of how environmental claims are made across industries
Brands are being challenged not just on whether they care about impact, but on whether they can clearly explain, evidence and stand behind what they say.
I was reminded of this recently while attending a webinar on environmental advertising and green claims. What stood out wasn’t a new rule or a dramatic crackdown. It was how familiar the principles felt. The guidance around sustainability is not separate from marketing best practice. It sits squarely alongside the same standards we apply to any other claim, legal, decent, honest and truthful.
What was particularly interesting was that much of the pressure for improvement is coming from within the advertising industry itself. There is a growing expectation that marketing should actively support better behaviours, from supply chains and media choices through to how messages influence everyday decisions.
And yet, green messaging continues to trip businesses up.
Now that’s often not because businesses are trying to mislead, but because environmental impact is complex, expectations are high, and marketing language has a habit of drifting into certainty before the evidence is fully there.
That tension is what this post is about.
How brands can reduce the risk of overclaiming without retreating into silence. How clearer, more grounded messaging often creates more impact than bold declarations, and why the safest route through sustainability marketing is rarely the loudest one.
Most greenwashing is accidental
It’s easy to assume that greenwashing is driven by bad actors. But in reality, most cases come from businesses trying to do the right thing, but moving faster than their proof allows.
Marketing teams are under pressure to show progress whilst Sustainability teams are working through long term change. More often than not, somewhere in the middle, the language or claims that a business uses gets ahead of reality.
The result is rarely an outright falsehood. More often it is a claim that is too broad, too absolute, or too loosely defined. What happens next is that scrutiny follows, and when scrutiny arrives, intent matters far less than cold hard evidence.
This is where reputational damage creeps in, mainly because a business has said too much, too confidently.
Where brands usually get it wrong
The most common problem when it comes to green and sustainable messaging is absolutism.
Yes, terms like green, eco friendly or sustainable sound positive, but they imply total impact. Across a whole product, service or organisation that sets an extremely high bar for proof, and one that very few businesses can realistically meet. It’s also important to note that these kinds of claims are also held to a much higher level of scrutiny, for that exact reason that they’re so vague and undefined.
Another issue is abstraction. Targets like net zero by 2050 might be strategically important, but they are distant and difficult to relate to. For most audiences, they feel more like aspirations than evidence of actual progress.
There is also the challenge of complexity. Environmental impact is technical by nature. When claims rely on specialist language or unexplained metrics, they become hard to understand and easy to mistrust, even when they are accurate. This is where translating claims into plain language, with a clear point of reference, becomes as important for compliance as it is for comprehension.
In many cases, none of this is malicious. It is simply marketing falling back on familiar habits in an unfamiliar space.
Why simpler claims often work better
Green claims are some of the hardest claims to make well. They sit at the intersection of science, systems and behaviour, none of which are intuitive for most people.
That is why simplicity matters.
Incremental claims tend to land better than sweeping ones. Showing how something has changed over time gives people a reference point. Saying where you were, where you are now, and what still needs work feels tangible and believable.
Specificity also builds trust. Rather than using broad terms like “green”, being specific and saying you use “renewable electricity” is much clearer.
Explaining a reduction compared to a previous baseline is easier to grasp than declaring success in absolute terms. Where possible, third party validation or independent benchmarks can further strengthen these claims.
Despite feeling smaller, conditional claims, when used properly, aren’t a weakness. They acknowledge that progress is uneven, that targets are sometimes missed, and that learning happens along the way.
Businesses that are open about this often feel more credible, not less.
Storytelling beats slogans every time
The strongest sustainability campaigns rarely shout about sustainability.
Instead, they focus on everyday decisions and normal behaviour. They spell out what they mean rather than relying on shorthand. They show impact through practical examples, rather than loft statements.
What makes these campaigns work is coherence. Sustainability is treated as a business concern that runs throughout the culture, operations and decision making, and not just something owned by a single team. That consistency tends to show up everywhere, from recruitment and internal communications through to how marketing activity is planned and delivered.
When that happens, your messaging becomes easier and audiences respond to this because it respects their intelligence. It avoids moral pressure and focuses on usefulness, relevance and clarity.
The quieter risk, saying nothing at all
As scrutiny has increased in recent years, another behaviour has emerged.
Some businesses are choosing to say less, or even nothing at all, about environmental progress out of fear of getting it wrong and being called out by the ASA (Advertising Standards Authority). Something called greenhushing.
This instinct is understandable, but it comes with its own risk.
Silence hides progress and slows shared learning. It removes real examples that could help normalise better decisions and behaviours.
Marketing still has a role to play here, and that role is to avoid exaggeration or evangelisation, to translate these realities into language people can understand, assess and trust. That includes being confident enough to make claims that do not require heavy small print or footnotes to explain away, which can often be counter-productive, and undermine trust.
The answer is not louder claims. It is clearer ones.
Precision over perfection
Sustainability messaging does not need to be flawless to be effective. It just needs to be precise.
That means choosing language carefully, being specific about what is included and what is not, showing progress without pretending the journey is finished and being able to show proof.
When brands do this well, they reduce risk and increase their impact at the same time. They build trust by being honest about where they are, rather than confident about where they hope to be.
That’s where the strongest green messaging sits.
If you’re trying to strike that balance between clarity and credibility in your own messaging, it’s something we spend a lot of time helping clients get right at Clockwise Marketing.
From refining claims to shaping the story around them, we help make sure what you say stands up to scrutiny and still connects. Get in touch if you’d like to talk it through.