Extantia Capital is a climate-first venture capital firm dedicated to advancing the transition to a decarbonized world. The company focuses on investing in deep decarbonization technologies that aim to significantly reduce greenhouse gas emissions. Extantia seeks to identify and support mission-driven entrepreneurs and innovative companies with the potential to become "Gigacorns," defined as firms capable of saving over 1 gigaton of CO2e emissions annually. The firm evaluates investment opportunities based on their ability to deliver substantial CO2e reductions, targeting companies that can directly or indirectly mitigate at least 100 megatons of emissions each year. With more than €100 million in assets under management, Extantia Capital employs dual investment strategies: Extantia Flagship, which supports scalable deep decarbonization technologies, and Extantia Allstars, which invests in climate-focused venture capital funds. Through these efforts, Extantia aims to promote sustainable practices that benefit both the planet and humanity.
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.
Epoch Biodesign
Series A in 2025
Epoch Biodesign focuses on creating natural solutions to address climate challenges through the development of innovative enzymes. By integrating insights from nature with expertise in computational and biological sciences, the company enables the biorecycling of plastic waste into everyday chemicals. Their enzymatic process is tunable, allowing for efficient conversion of unrecyclable plastics into low-carbon alternatives. Epoch Biodesign's approach not only facilitates the recycling of plastic waste but also enhances the discovery and development of products using complex proteins, positioning the company as a significant player in advancing sustainable practices in waste management.
Vema Hydrogen
Seed Round in 2025
Vema Hydrogen is a pioneering clean hydrogen production company. It helps to fight the enormous decarbonization issue.
Modern Synthesis
Seed Round in 2025
Modern Synthesis is a biomaterial company focused on creating sustainable textiles for the fashion industry through innovative microbial weaving techniques. By harnessing the capabilities of bacteria, the company develops a new class of biobased textiles that offer significant advantages over traditional materials. These textiles provide strength and durability without the use of harmful petrochemical binders or toxic byproducts, and they eliminate the need for animal inputs, allowing for a diverse range of aesthetics to meet designers' needs. Modern Synthesis' technology utilizes bacterial nanocellulose, a highly versatile and robust form of cellulose, to produce customizable bio-textiles and composites. This approach not only replaces conventional materials such as animal leathers and plastic-based synthetics but also integrates efficiently with existing manufacturing practices, promoting scalability and sustainability within the industry.
Vamo
Seed Round in 2024
Vamo specializes in heat pumps and provides proficient guidance and planning, as well as rapid and easy installation.
Reverion
Series A in 2024
Reverion specializes in developing reversible, carbon-negative power plants that leverage patented technology to maximize the potential of biogas. The company's containerized units, designed for mass production, achieve remarkable electrical efficiencies of 80% for both power generation and energy storage. This innovative approach not only doubles the electricity output of traditional gas engines but also significantly reduces greenhouse gas emissions, resulting in a negative CO2 balance. Additionally, Reverion's technology is capable of utilizing excess solar and wind power, enhancing electricity production in existing biogas plants and stabilizing the power grid during electrolysis. Through these advancements, Reverion aims to promote a renewable and decarbonized energy future.
UP Catalyst
Seed Round in 2024
UP Catalyst is a manufacturer focused on producing sustainable carbon nanomaterials and graphite for the green energy storage sector. The company utilizes innovative electrolysis methods to convert carbon dioxide into these materials, addressing supply challenges in the graphite market while promoting environmental sustainability. By recycling waste materials, UP Catalyst provides eco-friendly solutions that enable clients to incorporate its nanomaterials into various applications, including battery and supercapacitor technologies, conductive coatings, polymer formulations, and water filtration systems.
SiTration
Seed Round in 2024
SiTration, founded by Brendan Smith in 2020 and based in Cambridge, Massachusetts, specializes in the development of ultra-durable filtration membranes tailored for efficient separations in harsh environments. The company's innovative technology enhances energy efficiency in challenging industrial applications by integrating the low cost and exceptional durability of various advanced commercial membranes. This enables users to achieve resource-efficient operations even in demanding conditions, setting SiTration apart in the filtration industry.
WASE
Venture Round in 2024
WASE is a London-based company founded in 2017 that specializes in decentralized sanitation systems aimed at promoting circular waste treatment. The company focuses on enhancing energy recovery from previously non-viable waste streams through its innovative waste-to-energy technology. In addition to energy recovery, WASE also recovers water and nutrients from waste, which can be transformed into fertilizers. By providing these solutions, WASE empowers clients to harness the potential of waste, contributing to more sustainable practices in waste management and resource recovery.
UP Catalyst
Seed Round in 2023
UP Catalyst is a manufacturer focused on producing sustainable carbon nanomaterials and graphite for the green energy storage sector. The company utilizes innovative electrolysis methods to convert carbon dioxide into these materials, addressing supply challenges in the graphite market while promoting environmental sustainability. By recycling waste materials, UP Catalyst provides eco-friendly solutions that enable clients to incorporate its nanomaterials into various applications, including battery and supercapacitor technologies, conductive coatings, polymer formulations, and water filtration systems.
Reverion
Seed Round in 2023
Reverion specializes in developing reversible, carbon-negative power plants that leverage patented technology to maximize the potential of biogas. The company's containerized units, designed for mass production, achieve remarkable electrical efficiencies of 80% for both power generation and energy storage. This innovative approach not only doubles the electricity output of traditional gas engines but also significantly reduces greenhouse gas emissions, resulting in a negative CO2 balance. Additionally, Reverion's technology is capable of utilizing excess solar and wind power, enhancing electricity production in existing biogas plants and stabilizing the power grid during electrolysis. Through these advancements, Reverion aims to promote a renewable and decarbonized energy future.
MagnoTherm
Seed Round in 2023
MAGNOTHERM, founded in 2019 and headquartered in Darmstadt, Germany, specializes in innovative cooling and heating technology utilizing magnetic materials. The company has assembled a team of over 40 experts with significant expertise in magnetic cooling and magnetocaloric materials. MAGNOTHERM aims to address the climate crisis by providing energy-efficient alternatives to traditional gas compression cooling, which contributes to at least 7% of global CO2 emissions. Its technology, which operates at low pressure, is designed to be up to 30% more energy efficient than existing systems while being non-explosive, non-flammable, and low maintenance. The company focuses on developing magnetic cooling systems suitable for various applications, including room temperature environments and hydrogen liquefaction plants, offering a sustainable solution that can help transition industries away from outdated gas compression methods.
LAVA
Seed Round in 2022
LAVA addresses the key challenges of renewable energy: efficiency, intermittency, and financial viability. Its proprietary liquid-based thermodynamic cycle operates at near-perfect efficiency (70-80% of Carnot), significantly improving both the efficiency and economics of heat-to-electricity and electricity-to-heat conversion. The company’s roadmap features an isothermal heat engine that converts heat into zero-emission electricity, a high-efficiency isothermal heat pump offering a clean alternative to emission-heavy industrial boilers, and the Carnot Battery for long-duration storage, capable of turning any solar or wind installation into reliable baseload power. Designed for low CAPEX and high efficiency, Lava delivers strong returns on investment with short payback periods, making clean energy not only a responsible choice but also a sound financial decision.
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.
Reverion
Seed Round in 2022
Reverion specializes in developing reversible, carbon-negative power plants that leverage patented technology to maximize the potential of biogas. The company's containerized units, designed for mass production, achieve remarkable electrical efficiencies of 80% for both power generation and energy storage. This innovative approach not only doubles the electricity output of traditional gas engines but also significantly reduces greenhouse gas emissions, resulting in a negative CO2 balance. Additionally, Reverion's technology is capable of utilizing excess solar and wind power, enhancing electricity production in existing biogas plants and stabilizing the power grid during electrolysis. Through these advancements, Reverion aims to promote a renewable and decarbonized energy future.
GA Drilling
Venture Round in 2022
GA Drilling is a high-tech company focused on developing and commercializing its innovative drilling technology platform, PLASMABIT. This technology aims to deliver significant time and cost savings compared to traditional drilling methods, making it applicable across various sectors, including oil and gas, geothermal energy, mining, and tunneling. The company emphasizes the potential of its patented technology to facilitate the production of clean and renewable energy, offering scalable solutions that support zero-carbon emissions energy production. Through its advancements, GA Drilling seeks to open new avenues for efficient and sustainable resource extraction.
BeZero Carbon
Series A in 2022
BeZero Carbon operates as a global rating agency focused on the voluntary carbon market. The company offers independent, risk-based, project-level carbon ratings that are crucial for investing in carbon projects, which play a vital role in addressing climate change. By providing these ratings and associated risk tools, BeZero Carbon empowers organizations with the necessary knowledge and confidence to make informed climate decisions. The ultimate goal of the company is to enhance investment in environmental markets, contributing to a sustainable future.
Leko Labs
Series A in 2022
Leko Labs is a Luxembourg-based company founded in 2014 that specializes in the manufacturing of sustainable building components. The company focuses on providing glue-free mass timber construction solutions, utilizing cross-laminated timber to create structures that replace traditional materials like concrete and steel, thus significantly reducing the carbon footprint of construction projects. Leko Labs employs advanced technology to enhance the efficiency of the construction process, including prefabrication on demand and the use of machine learning algorithms to automate various design phases. By integrating structural and insulation performance, Leko Labs aims to revolutionize building practices while promoting environmentally friendly construction methods.
H2Pro
Series B in 2022
H2Pro, Ltd. is a renewable energy company based in Caesarea, Israel, founded in 2019. The company specializes in developing innovative water-splitting technology aimed at producing hydrogen fuel efficiently. Its proprietary method, known as E-TAC (Electrochemical–Thermally-Activated Chemical water splitting), effectively decouples the hydrogen and oxygen evolution reactions, allowing for the generation of hydrogen and oxygen in separate phases. This technology is designed to facilitate the widespread adoption of sustainable hydrogen fuel by providing an efficient, affordable, safe, and environmentally friendly means of hydrogen production.
INERATEC
Series A in 2022
INERATEC is a company dedicated to developing sustainable energy solutions through the production of innovative synthetic fuels and power-to-X plants. By focusing on replacing fossil fuels with carbon-neutral alternatives, INERATEC aims to contribute to a post-fossil fuel economy. The company specializes in generating renewable hydrogen and converting greenhouse gases, such as carbon dioxide and hydrogen, into various synthetic products, including e-kerosene, carbon dioxide-neutral diesel, synthetic waxes, and methanol. These products enable chemical plant operators to utilize synthetic fuels, which are derived from climate-neutral energy sources, thereby minimizing chemical waste and enhancing climate protection.
Modern Hydrogen
Series B in 2021
Modern Hydrogen is an innovative energy technology company focused on delivering affordable electricity and clean hydrogen solutions. The company develops a distributed hydrogen production system that enables on-site generation of clean hydrogen while efficiently sequestering carbon. Their technology is designed to convert the heat from industrial and commercial boilers and furnaces into usable power, which helps minimize energy waste. By implementing these systems, Modern Hydrogen aims to assist clients in reducing operational costs, lowering carbon emissions, and enhancing energy resilience during power outages.
Betteries
Seed Round in 2021
Betteries is a company that specializes in providing mobile and affordable power solutions through its multipurpose power systems. Each system can store between 3 kWh and 12 kWh of energy and is designed for fast charging, delivering up to 5 kW of both DC and AC power. The modular configuration of Betteries systems allows for horizontal or vertical stacking, and they can be charged using various energy sources. Equipped with smart electronics, including Wi-Fi and GPS, these systems can be remotely monitored and controlled via an IoT platform. Betteries is committed to sustainability, offering battery-as-a-service solutions that focus on recycling and reducing costs for customers. Their products cater to diverse applications such as e-mobility, off-grid productive use, and on-grid backup power, while adhering to circular economy principles.
Bloom Biorenewables
Seed Round in 2021
Bloom Biorenewables Ltd is a Swiss company founded in 2019, focused on developing technology that transforms wood and agricultural waste into renewable materials as alternatives to petroleum. The company specializes in creating bio-based materials for the chemical industry, targeting various markets including fragrances, plastics, and textiles. By introducing innovative production methods for biorenewable products and fuels, Bloom Biorenewables aims to provide sustainable solutions that reduce reliance on fossil fuels and contribute to climate change mitigation.
GA Drilling
Series C in 2021
GA Drilling is a high-tech company focused on developing and commercializing its innovative drilling technology platform, PLASMABIT. This technology aims to deliver significant time and cost savings compared to traditional drilling methods, making it applicable across various sectors, including oil and gas, geothermal energy, mining, and tunneling. The company emphasizes the potential of its patented technology to facilitate the production of clean and renewable energy, offering scalable solutions that support zero-carbon emissions energy production. Through its advancements, GA Drilling seeks to open new avenues for efficient and sustainable resource extraction.
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