Carbon13 is delighted to invest in five new climate tech ventures through the Carbon13 SEIS Fund IX in partnership with Syndicate Room.
This cohort spans breakthrough innovations across climate intelligence, resilient infrastructure, sustainable food systems, advanced materials, biosensing, and autonomous environmental technologies.
“These ventures are the frontline of the direction of travel for climate tech in 2026 – namely the adaptation to climate change, the resilience of our supply chains, as well as, on the push for further electrification and the use of advanced autonomous vehicles and robotics. From food security to data centre cooling to risk modelling for assets, these five ventures are building Europe’s climate resilient future. In 2026 we’re seeing fierce competition at pre-seed, investors expect more progress at this stage than ever before. These five ventures are meeting those expectations: The founding teams are often led by serial founders, who know what it takes to go from idea to scaling, they have already won grant funding, ensuring they can progress to hit traction milestones and moved through TRLs, before raising much equity funding. Now we are excited to have them enter the new 12-month Growth Phase of Carbon13 which will enable them to progress even faster.“
Meet the ventures
Download the full lookbook
View each venture and their traction so far, including which teams have already raised follow-on funding from the likes of SFC Capital, or won grants from Innovate UK, or have begun working with leading industry partners.
The Numbers
- 100% of teams have at least one PhD cofounder
- 60% have at least one female cofounder
- 10 million tonnes – each startup has demonstrated the potential to mitigate CO2e emissions by at least 10 million tonnes per year when at scale
Our conviction in each venture is built on exceptional founder to market fit, rapid execution, defensible technology, credible climate impact, early commercial validation, and the ambition to reshape critical global industries.
Carbon13’s next SEIS Fund is open now for this tax year
Our tenth SEIS Fund is open now – your chance to invest in the next cohort of Carbon13’s Venture Builder and take advantage of the UK government’s tax reliefs for SEIS, including 50% income relief and 100% CGT and inheritance tax relief (subject to holding terms, and subject to change and status.)
On the 21st July, we’re holding a Q&A evening in London for investors interested in deploying capital in this tax year. Two Carbon13 startups will also present.
Applications are open for our next Venture Builders
Follow in these startups’ footsteps and get building your climate startup this September. You’ll join 80 other founders all looking for co-founders, all ready to go all in on the venture, and all deeply committed to the mission of transforming industries to safeguard the Earth.