Most Climate Startups Don’t Have a Marketing Problem — They Have a Credibility Problem
There’s a point in almost every climate startup’s growth where the same conclusion starts to surface.
Pipeline is slower than expected. Conversations with investors feel harder to land. Enterprise buyers show interest, but deals take longer than they should. At some stage, the diagnosis tends to settle on marketing. The assumption is that the company simply needs to be more visible. More content, more activity, more presence.
It feels like a logical conclusion. It also tends to miss what is actually going on.
In many cases, the issue sits one layer beneath that. People are aware of the company, or at least aware enough. What they are less certain about is whether they trust what it is claiming.
That difference is subtle, but it shapes everything that follows. Visibility creates attention, but attention in climate does not operate in a vacuum. It brings scrutiny with it. The more a company puts itself forward, the more closely its claims are examined, especially when those claims relate to emissions, impact or net zero outcomes.
This is where things start to break down.
Over the past few years, expectations around sustainability communication have shifted quite significantly. The market has become more literate, more cautious, and far less willing to take broad claims at face value. Buyers, investors and journalists are all asking more detailed questions, and they are asking them earlier in the conversation.
At the same time, regulatory pressure has tightened. In Australia, ASIC has been increasingly explicit about what constitutes misleading sustainability claims. In the United States, the SEC’s evolving disclosure requirements have pushed companies toward greater precision and accountability. Even outside formal regulation, the direction of travel is clear. Claims need to be specific, defensible and grounded in something more than intent.
Many climate startups have not fully adjusted to this shift.
The language often gives it away. There is a tendency to rely on phrases that sound credible without actually providing much detail. You see references to accelerating decarbonisation, enabling net zero, transforming industries. These statements carry weight in isolation, but they rarely hold up when someone asks a simple follow-up question.
What does that reduction look like in practice?
How is it measured?
What baseline is being used?
What happens if assumptions change?
If those answers are difficult to articulate, the problem is not a lack of marketing activity. It is a lack of clarity and proof within the narrative itself.
This is also where the conversation around greenwashing and greenhushing becomes slightly too simplistic. Framing the issue as a binary between saying too much and saying too little does not quite capture what is happening on the ground. A large number of companies sit somewhere in between. They are communicating, but not with enough precision to build real confidence. The result is a kind of credibility gap. There is a message, but it does not fully withstand scrutiny.
That gap tends to show up in subtle ways. Sales cycles extend because buyers need more reassurance. Investors ask for additional validation. Media coverage becomes more cautious, or disappears altogether. None of this looks like a marketing failure on the surface, but it is all connected to how the company is perceived.
At its core, credibility is built through a combination of evidence, specificity and transparency.
Evidence is the most obvious starting point. Claims need to be supported by data that is not only internally consistent, but also contextualised. It needs to be clear how impact is calculated, how it compares to alternatives, and whether it has been validated externally. Without that, even well-written messaging feels incomplete.
Specificity matters just as much. General statements are easy to produce and easy to ignore. Precise statements require more work, but they signal confidence. They also make it easier for buyers and stakeholders to understand exactly where the value sits. In complex categories like climate, that clarity is often what moves a conversation forward.
Transparency is the element that is still underused. There is a reluctance to acknowledge uncertainty, limitations or trade-offs. In practice, doing so tends to strengthen credibility rather than weaken it. It demonstrates a level of maturity and understanding that is difficult to fake. In a space where overclaiming has been common, restraint can be a powerful differentiator.
When these elements are missing, increasing marketing output rarely solves the problem. Producing more content based on the same underlying narrative simply creates more opportunities for inconsistencies to appear. It can even accelerate scepticism, particularly if the messaging begins to feel repetitive or overstated.
A more effective approach is to pause and examine what is actually being communicated. What claims are being made, and how robust are they under pressure? Which parts of the story are clear, and which rely on assumption or interpretation? Where is the company leaning on language that sounds right, but does not fully explain the reality?
Answering those questions often leads to a different set of priorities. The focus shifts from increasing visibility to strengthening the foundation that visibility sits on. Once that foundation is solid, marketing becomes far more effective. It amplifies something that is already credible, rather than trying to compensate for gaps that are still unresolved.
This is particularly important in climate, where trust is both fragile and cumulative. It takes time to build, but it can erode quickly if expectations are not met. Companies that are able to communicate with clarity and precision tend to move through the market with less friction. Their positioning holds up in different contexts, from investor conversations to procurement processes to media scrutiny.
The ones that struggle are often doing many of the right things operationally, but are not translating that into communication that others can easily understand and believe.
That is why the instinct to default to “more marketing” can be misleading. Activity alone is not what drives confidence. What matters is whether the substance behind that activity is strong enough to support it.
Marketing, in that sense, acts as an amplifier. It extends reach, sharpens positioning and accelerates conversations. What it cannot do is create credibility where it does not already exist.
In a sector where expectations are rising and scrutiny is becoming more consistent, that distinction is becoming harder to ignore.
Explore how Third Hemisphere helps climate companies build credible, high-impact communication strategies.