Zero Carbon Capital, founded in 2019 and based in Hampshire, United Kingdom, is a venture capital firm dedicated to facilitating the transition to a zero-carbon future. The firm focuses on investing in pre-seed and seed-stage climate tech companies across the UK and Europe, specifically targeting innovative solutions that address significant emissions challenges. With a commitment to scientific and hardware innovations, Zero Carbon Capital seeks to support teams that are tackling unsolved emissions areas with the potential to mitigate at least 0.5 gigatons of CO2 equivalent per year by 2050. The firm prioritizes ambitious, vision-aligned teams that are developing hard-science solutions for a sustainable future.
Porpoise Power develops a tidal energy system using oscillating hydrofoil technology inspired by dolphin swimming mechanics.
Vema Hydrogen
Seed Round in 2025
Vema Hydrogen is a pioneering clean hydrogen production company. It helps to fight the enormous decarbonization issue.
IONATE
Series A in 2025
IONATE develops an innovative hardware-software system for smart grids, centered around its Hybrid Intelligent Transformer (HIT). This advanced device replaces traditional transformers, integrating the control of voltage, harmonics, and reactive power into a single unit. By utilizing magnetics, the HIT enables users to manage these critical power characteristics simultaneously, enhancing efficiency and minimizing energy loss. The technology is designed to stabilize power distribution across various applications, including power generation, industrial facilities, and data centers, while facilitating real-time control capabilities.
Spark e-Fuels
Pre Seed Round in 2025
Spark e-Fuels is a provider of carbon-neutral aviation fuel that addresses the environmental impact of air travel. The company produces sustainable aviation fuels from renewable energy, air, and water through an integrated and modularized approach. This innovation allows for the scalable production of sustainable e-fuels, overcoming challenges related to limited availability and high costs associated with sustainable aviation fuel (SAF). By utilizing proprietary load-flexible production processes, Spark e-Fuels connects directly to low-cost renewable electricity, enabling efficient and cost-effective e-fuels production tailored for the aviation industry.
Exergy3
Pre Seed Round in 2024
Exergy3 is an energy storage company that increases energy efficiency and reduces carbon dioxide emissions from industrial processes. It is a spinout from the University of Edinburgh.
twig bio
Pre Seed Round in 2023
twig bio operates as a bioengineering startup. twig bio using AI and robotics to find sustainable replacements for harmful ingredients.
Nitrofix
Seed Round in 2023
NitroFix is focused on reducing the global carbon footprint by producing ammonia through a novel, emission-free manufacturing process. Utilizing an innovative electrochemical reaction facilitated by a new catalyst, the company achieves a production method that generates zero carbon dioxide. This sustainable ammonia production system not only offers a zero-carbon footprint solution but also promotes stable pricing and enables local ammonia production for various applications. NitroFix's green ammonia serves as a renewable energy source, a carrier for hydrogen fuel, and a foundational component for nitrogen fertilizers, contributing to a more sustainable future.
RepAir
Series A in 2022
RepAir is at the forefront of advancing a carbon-negative future through its innovative carbon removal technology. The company has developed an electrochemical device that effectively captures carbon dioxide from the atmosphere by utilizing electricity. This process involves drawing in ambient air and passing it through a specialized membrane that selectively separates carbon dioxide, allowing clean air to be released back into the environment. RepAir's fully electric and zero-heat technology is designed for large-scale deployment, emphasizing environmental sustainability while minimizing energy consumption. Importantly, the system operates without the use of liquids, solvents, or hazardous materials, producing no waste and supporting clients in reducing their carbon footprints and energy costs.
ClimateCrop
Seed Round in 2022
ClimateCrop is an agriculture technology company founded in 2021 and based in Ness Ziona. The company specializes in gene editing to enhance the ability of plants to store carbon and energy, thereby increasing crop yields in biomass and fruit production. By improving the resilience of crops to extreme weather conditions, ClimateCrop enables agricultural companies to better adapt to current and future climate challenges, ultimately leading to more sustainable and productive farming practices.
IONATE
Seed Round in 2022
IONATE develops an innovative hardware-software system for smart grids, centered around its Hybrid Intelligent Transformer (HIT). This advanced device replaces traditional transformers, integrating the control of voltage, harmonics, and reactive power into a single unit. By utilizing magnetics, the HIT enables users to manage these critical power characteristics simultaneously, enhancing efficiency and minimizing energy loss. The technology is designed to stabilize power distribution across various applications, including power generation, industrial facilities, and data centers, while facilitating real-time control capabilities.
Anaphite
Seed Round in 2022
Anaphite Limited, established in 2016 and located in Bristol, United Kingdom, focuses on the development of graphene-based nanomaterials. The company specializes in creating graphene-enhanced cathodes designed for high-power, high-energy, and cost-effective lithium-ion batteries. Anaphite's innovative approach involves integrating graphene into composite materials through a scalable and economical process. This technology results in advanced properties that make their nanomaterials suitable for a variety of applications, including energy storage, air purification, and thermal management. By prioritizing affordability and versatility, Anaphite aims to make significant contributions to the commercialization of these technologies.
MicroByre
Venture Round in 2022
MicroByre, Inc. is a biotechnology company based in Berkeley, California, founded in 2017. The company specializes in developing genetically tractable strains from non-model micro-species, focusing on the genetic engineering of bacteria for industrial applications. MicroByre has created a platform for bacterial domestication that utilizes an automated characterization pipeline to identify underutilized bacteria with favorable metabolic traits. These bacteria are capable of converting unrefined biomasses into commodity chemicals more efficiently than traditional fermentation processes. The company’s innovative approach involves minimal genetic modifications to enhance the bacteria's flexibility and yield, reduce the need for nutritional additives, and improve resistance to contamination and phage attacks. By bridging the gap between promising scientific advances and practical applications, MicroByre positions itself as a valuable partner for various industries, offering collaborative opportunities through service agreements or joint development projects.
Multus
Seed Round in 2021
Multus is a London-based company established in 2019 that specializes in providing affordable and efficient growth media for the cultivated meat industry. By employing a machine learning approach, Multus develops entirely animal-free growth media tailored specifically for animal cells, helping cultivated meat companies scale their production while maintaining high performance. The company focuses on optimizing growth factor proteins produced by genetically engineered microorganisms, thereby eliminating the environmental drawbacks associated with traditional animal serum-based media. This innovative solution supports the growth of diverse animal cell types and tissues, enabling clients to produce sustainable meat products while minimizing the environmental and economic impacts of conventional meat production.
Phycobloom
Pre Seed Round in 2020
Phycobloom LTD. is a London-based company founded in 2019 that specializes in producing algae for biofuel production. The company utilizes synthetic biology to develop novel strains of algae capable of converting atmospheric carbon dioxide into affordable and sustainable hydrocarbons. This innovative approach aims to provide a carbon-neutral source of energy, presenting a viable alternative to fossil fuels. Phycobloom's founders, Dr. Ian Hu and Dr. John Waite, bring extensive expertise in genetic engineering and materials science, respectively, driving the company's mission to advance sustainable energy systems. Through their work, Phycobloom seeks to harness the potential of living organisms to contribute to a more sustainable energy future.
Anaphite
Seed Round in 2020
Anaphite Limited, established in 2016 and located in Bristol, United Kingdom, focuses on the development of graphene-based nanomaterials. The company specializes in creating graphene-enhanced cathodes designed for high-power, high-energy, and cost-effective lithium-ion batteries. Anaphite's innovative approach involves integrating graphene into composite materials through a scalable and economical process. This technology results in advanced properties that make their nanomaterials suitable for a variety of applications, including energy storage, air purification, and thermal management. By prioritizing affordability and versatility, Anaphite aims to make significant contributions to the commercialization of these technologies.
MicroByre
Seed Round in 2019
MicroByre, Inc. is a biotechnology company based in Berkeley, California, founded in 2017. The company specializes in developing genetically tractable strains from non-model micro-species, focusing on the genetic engineering of bacteria for industrial applications. MicroByre has created a platform for bacterial domestication that utilizes an automated characterization pipeline to identify underutilized bacteria with favorable metabolic traits. These bacteria are capable of converting unrefined biomasses into commodity chemicals more efficiently than traditional fermentation processes. The company’s innovative approach involves minimal genetic modifications to enhance the bacteria's flexibility and yield, reduce the need for nutritional additives, and improve resistance to contamination and phage attacks. By bridging the gap between promising scientific advances and practical applications, MicroByre positions itself as a valuable partner for various industries, offering collaborative opportunities through service agreements or joint development projects.
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