Circular11 has raised £2.4 million to scale a technology that turns non-recyclable plastic waste into durable composite lumber. By tackling both plastic incineration and timber scarcity, the team is proving that waste can become a valuable industrial resource. We’re excited to support their next stage of growth.
About us
Building the future together
Image Nium‘s novel nanotechnology is replacing Haber-Bosch, the most polluting industrial process on the planet to enable the synthesis of truly green ammonia for fertilisers and fuel.
Carbon13 is not just about investing in a few startups, it is about harnessing the entrepreneurial spirit. That means engaging with academia, business, policy makers, NGOs, consumers, new standards and finance. We need pioneers across the spectrum and that is where our community is critical to the success of our ventures and the transformation we need to see.
Get to know us
Meet Our Team
With origins across the Cambridge University ecosystem, world leading multinationals and successfully exited starts-ups, this team has deep experience in supporting founders, partners and investors.
Our Community
Carbon13’s community of climatetech founders, Entrepreneurs in Residence, Experts, Investors and our Industry Partners all contribute to tackle the climate emergency.
Develop a strategic partnership
Corporate partners work with us because they want to achieve ‘net zero’ emissions, drive innovation, engage staff and identify investment opportunities.
Attend an event
The latest events for potential founders, investors and corporate partners.
Leadership Team
Dr Nicky Dee
Co-founder and Chief Executive Officer
Michael Langguth
Co-founder & Chief Strategy Officer
Our impact
At Carbon13, our focus is not only on Carbon emissions or protecting Earth’s systems for the sake of Impact alone. Developing a scaling mentality from day one is essential to tackling an urgent and sizable problem—one that is increasingly shaped by the growing commercial drivers emerging from the fact that the cost of inaction on climate change now outweighs the cost of action. This dual imperative continues to shape how we support founders in building ventures that are both impactful and resilient.
Additionality
As humanity begins to experience the effects of climate change, and organisations increasingly showcase their efforts to join the sustainability conversation, we are seeing a growing number of claims of action. To achieve its mission, Carbon13 focuses on understanding its own additionality—the unique ways it drives climate impact through entrepreneurship.
This is delivered across four key areas:
First, Carbon13 creates ventures that wouldn’t otherwise exist by connecting founders who might never have met, encouraging those unsure about entrepreneurship to take the leap, and helping individuals find the right cofounder. We are the first line in many of our founders’ stories.
Second, it supports ventures in becoming more impactful by accelerating growth through expert guidance, timely input, access to finance, and fostering effective and diverse teams. Founders are also trained to embed impact from the ideation stage, ensuring they become catalysts for meaningful change. Venture growth also naturally supports job creation and economic engagement.
Third, Carbon13 generates new knowledge that benefits even those who don’t progress with a venture. Many alumni report re-engaging with their careers in more impactful ways, applying what they’ve learned to support climate innovation elsewhere.
Fourth, Carbon13 actively addresses the lack of diversity in entrepreneurship through inclusive programme design, targeted outreach to underrepresented groups, and dedicated support for female founders. Indicators and data supporting these claims are presented in the impact report.
Our Community
Carbon13’s community of climatetech founders, Entrepreneurs in Residence, Experts, Investors and our Industry Partners all contribute to tackle the climate emergency. Find out more about the roles across Carbon13 and the impact they have.
Entrepreneur in Residence
Image Amrit Chandan, Entrepreneur-In-Residence, Carbon13
Carbon Expert / Domain Expert
Image James Tabor, BCG Digital Ventures and domain expert at Carbon13
News, raises & milestones
Learn more about Carbon13’s progress and community. Here we share fundraising news from our ventures, collaborations with our partners, and our own news, opinion, and milestones.
Carbon13 invests in six deep tech startups
Carbon13 is delighted to invest in six new climate tech ventures through the Carbon13 SEIS Fund VIII in partnership with Syndicate Room. The startups range from physical AI, to clean fuels, to visible chemistry, and even ceramics. Our conviction in each venture has...
Temperate Secures SAFE Investment from Adapt Capital to Scale Low Energy Cooling Technology
Portfolio company Temperate has announced a new SAFE funding round led by Adapt Capital. This marks a significant step forward in its mission to reinvent cooling for a warming world. For Temperate, the investment will support the expansion of its breakthrough low...
€120,000 in Scholarship Support for Female Climate Founders Through Long-Standing Partnership with Siemens Energy Ventures
Since 2023, Siemens Energy Ventures and Carbon13 have partnered through the Female Equity Scholarship to support female climate founders at the earliest stages of company building.
Carbon13 to $15 million Series A: A Conversation with Cocoon’s Chief Science Officer
Cocoon Carbon is a materials company transforming waste from steel manufacturing into a vital and valuable ingredient for cement – decarbonising two hard-to-abate sectors at once. Their beachhead is the US steel industry and their Series A will fuel their traction...
Turning Methane into Opportunity: How Bluemethane Is Transforming UK Water Systems
Aiming to recover one billion tonnes of methane emissions from global water systems, Bluemethane is working with multiple industry partners such as Thames Water and Anglian Water to test its technology at larger scales.
Our Upcoming Events & Webinars
Whether investor, partner or participant. We show you how Carbon13 is organised and look forward to your questions and ideas. Our regular webinars and in-person events offer a great opportunity to get to know us better.













