16 climate startups, one mission: meet The Greenhouse Cohort 10

Undaunted’s tenth cohort of Greenhouse founders is turning bold ideas into stronger businesses as they tackle some of the world's most pressing climate and sustainability challenges.

Since embarking on The Greenhouse accelerator earlier this year, the sixteen ambitious climate startups participating in Cohort 10 have hit the ground running.

Through a series of intensive two-week sprints covering customer discovery, technology development, commercial strategy and intellectual property, they've been challenging assumptions, refining their propositions and identifying the fastest routes to impact. The process has sparked new customer conversations, product iterations and strategic partnerships. By the time they take to the stage at Demo Day, the teams will have spent a year testing, refining and accelerating their ventures.

We're seeing teams that aren't just developing impressive tech, but building the foundations of businesses that can create meaningful climate impact. Maiko Schaffrath Head of The Greenhouse, Undaunted

The startups represent a broad range of deeptech, cleantech solutions. From clean energy and advanced materials to sustainable food systems, industrial decarbonisation and climate adaptation, each is developing technology designed to accelerate the transition to a low-carbon and climate resilient future.

"One of the most exciting things about this cohort is the pace at which the founders have embraced the programme," says Maiko Schaffrath, Head of The Greenhouse.

"They've approached every sprint with curiosity and ambition, testing their ideas with customers, sharpening their commercial strategies and learning from one another. We're seeing teams that aren't just developing impressive technologies, but building the foundations of businesses that can create meaningful climate impact."

The Greenhouse, which is currently open for applications, provides early-stage climatetech founders with mentorship, up to £20k grant funding, workspace, specialist workshops and access to Imperial's world-class expertise, facilities and networks. Throughout the 12-month programme, participants work closely with experienced entrepreneurs, investors and industry experts to accelerate their progress towards pilots, partnerships and investment.

"HSBC UK’s funding is what makes The Greenhouse possible providing grant support for every Cohort 10 founder and powering the curated acceleration programme that helps bold innovative solutions become investable, scalable businesses," said Natalie Gregoire-Skeete, Head of Sustainability at HSBC UK. "I’m also excited to see applications open for Cohort 11, including the new Opening Opportunities Fund, allowing more founders to take the leap into entrepreneurship."

Meet Greenhouse Cohort 10

Algiplex

 Algiplex is developing modular synthetic ecosystems, boosting microalgae productivity by more than five times for scalable climate solutions.

Calora

Calora’s thermal battery replaces boilers to rapidly decarbonise domestic heating at scale.

eluna

eluna is securing sustainable energy storage.

FluoroCycle

FluoroCycle is developing a low-energy chemical treatment making "forever chemical" destruction simple and affordable. 

FORAGER

FORAGER help farmers mitigate drought risks, nourish their soils, and protect their livelihoods.

Gradient Dynamics

Gradient Dynamics is developing a physics AI engine to make climate hardware easy. 

GreenMixes

GreenMixes turns concrete carbon-negative with a proprietary drop-in biochar composite.

Hydro Flow Energy

Hydro Flow Energy develops tidal technology delivering predictable, baseload renewable power.

InX Tech

InX Tech deploys AUVs to survey the seabed and turn the data into actionable intelligence.

Karbana

Scalable manufacturing for cheaper, greener, more abundant battery anodes. 

Lir Labs

Lir Labs is developing biological wastewater imaging for process control and energy optimisation. 

MermaidAg

MermaidAg is developing precision biostimulants to improve the flood resilience of winter wheat. 

Nature Based Limited

Nature Based Limited is developing kelp forest 'shields' that protect offshore wind, cut costs by £1bn/GW, and restore ocean ecosystems. 

nth Power

nth Power builds the intelligent coordination layer for distributed energy fleets.

Potenix

Potenix is developing engineered biocatalysts and precision dosing to unlock the energy potential of AD plants. 

Resonant Grid

Resonant Grid is developing software that turns smart meters into real-time grid intelligence for utilities.

Could this be you?

While their technologies span different sectors, these founders share a common goal: transforming innovative solutions into scalable businesses capable of delivering real-world impact on climate change and the environment. On graduating from The Greenhouse they will join a thriving alumni network of startups and scale ups including:

• Naked Energy – who recently announced £8.875m investment and whose tech has been installed on the British Library roof, aiming to reduce CO₂ emissions by 55 tonnes a year.​
• Notpla – Earthshot Prize winners, who raised £20m additional investment in 2024 and are now rolled out across Imperial.
• Puraffinity – who raised £17m in 2024 and are now scaling up their water treatment tech.
• Sequinova – who unveiled their plant-based sequins during Stella McCartney’s A/W 2025 show during Paris Fashion Week.
• Lixea – who are building a 25,000 tonne/year biomass processing plant producing commercial volumes of novel materials.

If you think this could be you, apply now for Cohort 11. Deadline: 21 August 2026.