CLEANTECH VENTURE DAY
LONDON
22 June 2026
KPMG, Canary Wharf
This year, we’re kicking off London Climate Action Week with a day built for the people pushing climate tech forward. The focus will be on the companies and technologies that have deep scientific or engineering research at the core.
Cleantech Venture Day started in London, which remains the flagship of the series.
It now runs across London, Paris and Amsterdam as part of the Climate Tech SuperCluster, the ecosystem connecting some of the most active climate tech communities in the UK and Europe. What began as a single event has grown into something the region was missing — a shared stage for the founders, investors and others who are actually moving the needle on climate.
Each year we bring together a carefully selected group of pitching companies alongside the investors, corporates and partners drawn from across the network. The format is intentionally focused — this isn't a big conference, and that's the point. The people in the room are there because they want to be, and the conversations that happen on the day have a habit of turning into something real.
Pitch at Cleantech Venture Day
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You're early, but the technical foundation is there. We're looking for founders who have a clear sense of the problem they're solving, early evidence that their approach works, and the conviction to see it through. The right introduction at this stage can genuinely change the trajectory of a company.
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You've proven the core technology works and you're starting to build commercial momentum. We're looking for companies that have moved beyond the lab, with early customer or partner traction and a clear case for why now is the moment to scale.
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You know what you're building, you know who it's for, and you have the numbers to back it up. We're looking for founders ready to make a compelling case for significant growth capital and a credible path to scale.
More than just a map
This isn’t just a nice idea on a map. It’s already one of the world’s most powerful climate tech ecosystems.
What you’re looking at is a collection of some of the world’s most prolific climate tech clusters. What’s special is that they’re all reachable within four hours by train from London.
Within this region, you’ll find a critical mass of world-leading universities, ambitious climate investors, deep tech hubs, and some of Europe’s most forward-thinking cities: Cambridge, Paris, Cologne, Amsterdam, Antwerp, London, Eindhoven, Charleroi, Oxford. The list goes on.
We don’t believe the world needs another isolated innovation district or local hub. What it does need is a joined-up ecosystem that moves at the speed of the climate crisis.
An ecosystem where founders, researchers, investors, corporates, and governments collaborate across borders to scale solutions that work.
This is the ecosystem we’re building. We call it the Climate Tech SuperCluster.
Cleantech Venture Day in Amsterdam
Watch below for a taste of what it was like last year in Amsterdam at our first venture from London and into Europe.