Don’t invest unless you’re prepared to lose all the money you invest. This is a high risk investment and you are unlikely to be protected if something goes wrong. Take 2 minutes to learn more.

Don’t invest unless you’re prepared to lose all the money you invest. This is a high risk investment and you are unlikely to be protected if something goes wrong. Take 2 minutes to learn more.

For investors

Carbon13 SEIS Fund VI

The Start-up Accelerator for Carbon Reduction and Removal

About the Carbon13 SEIS Fund VI

Discover Carbon13 SEIS Fund VI (2024/25 tax year) — your gateway to investing in the future of climatetech. We back ventures that pioneer sustainable technologies, aiming for significant decarbonisation or carbon removal impact.

Since 2021, we’ve successfully built, supported, and invested over £9 million in 71 climatetech ventures, achieving impressive markups to date. Our distinct approach centres around selecting talented and mission-driven founders for our Programmes. We strategically invest in ventures poised for massive scale and genuine carbon impact.

Investing in a SEIS Fund provides UK investors with the opportunity to claim up to 50% income tax relief on their investment amount, coupled with exemption from Capital Gains Tax and many other additional benefits.

Investment Rationale



Targeting startups with the potential of high growth and significant ROI by focussing on reducing carbon (CO2e) emissions by 10 million tonnes per annum.


The ventures are balanced across business models and investment themes, encompassing both hardware and software solutions.


Targeting ventures with the potential for delivering a return of 2.5x or more on investment, seeking substantial financial growth.


This is a long term and illiquid investment, investing in pre-seed stage ventures.  



Capital is intended to be deployed in the 2024/25 tax year.


Working across a range of sectors within the climatetech space, encompassing both hardware and software solutions.


It is intended that ventures invested in will be SEIS eligible.


Strong, proprietary deals generated by our Programmes.

Learn more in our upcoming webinar

Min Dhillon

Ask your questions

Contact Min Dhillon, Head of Capital at Carbon13.

This is a high risk investment. Please read our risk summary here.

Interested in investing in Carbon13 SEIS Fund VI?

If you would like more information on our background, portfolio, investment thesis, regulatory structure, and success to date, please complete the below form and we will be in touch:

Meet our climate tech ventures


Natalia Dorfman, CEO
Thomas Merriman, CPO
Paul Young, CTO

Kita is the carbon insurance specialist; developing bespoke carbon insurance products that safeguard the quality and performance of carbon transactions. By reducing risk, carbon insurance channels investment towards high quality carbon projects, enabling them to scale at the pace needed to address the climate crisis.

Materials Nexus

Dr Jonathan Bean, CEO
Robert Forrest, CTO
Dr Jon Pillow, CSO
Nic Stirk MBE, CCO

Materials Nexus is a deep-tech company originated at Cambridge University and Carbon13, who combine the insights of quantum mechanics with the power of AI to predict the properties of materials. Materials such as concrete, steel and glass contribute towards 50% of all CO₂ emissions. New, better materials are needed for a new, low carbon world – but it typically takes 20 years to develop a new material to be commercialised.

Their ground-breaking AI-enabled Materials Discovery Platform transforms the way new materials are designed using a rapid automated process and advanced quantum calculations that give high accuracy at larger scales.


Nium logo


Phil Hunter, COO
Lewis Jenkins, CEO
Yubiao Niu, CTO


Nium eliminates emissions by delivering hydrogen as a more efficient energy vector. Their novel nanotechnology revolutionises the Haber-Bosch process and enables the synthesis of truly green ammonia. With two patents filed, Nium helps build the infrastructure and network for a cleaner future of food and fuel.



Louise Parlons Bentata, CEO
Néstor Rueda-Vallejo, CTO

3 billion tonnes of CO2e are emitted from methane in water each year. There is no way to remove this methane at scale. Until now. Bluemethane measures and removes methane from water. The methane is then used as a new source of clean energy. Their technology is scalable and can be deployed in a variety of settings, including wastewater treatment plants, reservoirs and rice cultivation. With methane’s global warming power 34x that of carbon, Bluemethane is tackling a core problem for global warming.



Sarah Montgomery,  CEO
Tony To, Co-Founder, CTO

Infyos are building a future where every electric vehicle battery is sustainable. Using the team’s expertise in the battery industry and supply chain technology for large organisations around the world, Infyos are helping car makers, battery manufacturers and mining companies map and measure the impact of their supply chain, identify hotspots, and enable collaborative action to improve impact and reduce supply chain risk.