Extantia Capital
Extantia Capital is a climate-first venture capital firm, based in Berlin, Germany, founded in 2020. It concentrates on supporting deep decarbonisation technologies and mission-driven ventures aiming to accelerate the transition away from fossil fuels. It seeks to back companies capable of delivering substantial CO2e reductions, targeting scalable business models with high impact. Extantia collaborates with scientists, investors, and business leaders to advance climate solutions and align funding with measurable environmental outcomes. The firm has over €100 million in assets under management. It operates two investment approaches: Extantia Flagship, which backs scalable decarbonisation technology companies, and Extantia Allstars, which invests in climate-focused venture capital funds. The emphasis is on selecting emerging leaders with the potential to drive large-scale emissions reductions and commercial viability.
Top Stages
25 past transactions
RepAir
Series A in 2025
RepAir specializes in large-scale carbon removal technology. Its fully electric, zero-heat process efficiently separates CO2 from air using minimal energy, producing no hazardous waste or liquids.
Epoch Biodesign
Series A in 2025
Epoch Biodesign develops natural solutions to scale and industrialize biology to address climate challenges. The company designs and develops enzymes by combining biology, artificial intelligence, and engineering to break down plastics into reusable chemicals, enabling biorecycling as a tunable enzymatic process that converts plastic waste into everyday chemicals. It provides industrial biotechnology services aimed at reducing plastic waste and advancing sustainability.
Vema Hydrogen
Seed Round in 2025
Vema Hydrogen is a trailblazing company specializing in clean hydrogen production. It tackles the global challenge of decarbonization by generating hydrogen through geologic stimulation, offering a clean and cost-effective alternative to traditional methods. The company employs advanced numerical simulations, geochemical analysis, and multiphase flow studies to optimize hydrogen production. It also identifies and tests suitable geological locations for pilot projects, obtains necessary permits, and optimizes catalyst use to enhance efficiency.
Modern Synthesis
Seed Round in 2025
Modern Synthesis is a biotechnology company that develops biofabricated materials by converting bacterial nanocellulose, a by‑product of fermentation, into sustainable textiles and coatings. Its materials offer performance and aesthetics without plastics, petrochemicals, or animal inputs, enabling durable options for the fashion industry and beyond. The process leverages abundant raw materials and integrates with existing manufacturing infrastructure to scale production without starting from scratch, helping brands replace animal leather and plastic‑based textiles while reducing environmental impact and expanding design possibilities.
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 develops reversible, carbon-negative power plants using patented technology. Their containerized units achieve electrical efficiencies of up to 80%, doubling the electricity output of conventional gas engines while reducing greenhouse gas emissions and achieving a negative CO2 balance.
UP Catalyst
Seed Round in 2024
UP Catalyst is a manufacturer focused on producing sustainable carbon nanomaterials and graphite for the green energy storage industry. The company specializes in utilizing carbon dioxide through electrolysis to recycle waste materials, addressing the growing demand for graphite while ensuring environmentally friendly sourcing of carbon materials. This innovative approach enables clients to incorporate UP Catalyst's nanomaterials into various applications, including battery and supercapacitor technologies, conductive and strengthening coatings, polymer formulations, and water filtration systems. Through its commitment to sustainability, UP Catalyst aims to contribute to the development of greener energy solutions.
SiTration
Seed Round in 2024
SiTration, founded in Cambridge, Massachusetts in 2020 by Brendan Smith, specializes in developing ultra-durable filtration membrane technology. This technology is designed to efficiently separate substances in harsh and challenging industrial environments while reducing energy consumption compared to conventional methods. The company's membranes combine the advantages of various state-of-the-art commercial membranes, offering users resource-efficient operations even in unpleasant industrial settings.
WASE
Venture Round in 2024
WASE is a London-based company founded in 2017, specializing in decentralized sanitation solutions aimed at promoting the global adoption of 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's system facilitates the recovery of water and nutrients, allowing for the production of fertilizers. By transforming waste into valuable resources, WASE empowers clients to harness the potential of waste to support sustainable practices and drive future growth.
UP Catalyst
Seed Round in 2023
UP Catalyst is a manufacturer focused on producing sustainable carbon nanomaterials and graphite for the green energy storage industry. The company specializes in utilizing carbon dioxide through electrolysis to recycle waste materials, addressing the growing demand for graphite while ensuring environmentally friendly sourcing of carbon materials. This innovative approach enables clients to incorporate UP Catalyst's nanomaterials into various applications, including battery and supercapacitor technologies, conductive and strengthening coatings, polymer formulations, and water filtration systems. Through its commitment to sustainability, UP Catalyst aims to contribute to the development of greener energy solutions.
Reverion
Seed Round in 2023
Reverion develops reversible, carbon-negative power plants using patented technology. Their containerized units achieve electrical efficiencies of up to 80%, doubling the electricity output of conventional gas engines while reducing greenhouse gas emissions and achieving a negative CO2 balance.
MagnoTherm
Seed Round in 2023
MagnoTherm, founded in 2019 and headquartered in Darmstadt, Germany, specializes in innovative magnetic cooling and heating technologies. With a team of over 40 experts in magnetocaloric materials, the company is committed to addressing the climate crisis by revolutionizing the cooling industry, which accounts for approximately 7% of global CO2 emissions. MagnoTherm's technology offers an alternative to traditional gas compression systems, boasting up to 30% greater energy efficiency while being non-explosive, non-flammable, and requiring low maintenance. The company aims to meet the increasing demand for sustainable and cost-effective cooling solutions, providing a viable pathway for policymakers to transition from outdated gas compression methods that have remained unchanged for nearly two centuries.
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 specializes in large-scale carbon removal technology. Its fully electric, zero-heat process efficiently separates CO2 from air using minimal energy, producing no hazardous waste or liquids.
Reverion
Seed Round in 2022
Reverion develops reversible, carbon-negative power plants using patented technology. Their containerized units achieve electrical efficiencies of up to 80%, doubling the electricity output of conventional gas engines while reducing greenhouse gas emissions and achieving a negative CO2 balance.
GA Drilling
Venture Round in 2022
GA Drilling is a high-tech company developing and commercializing its groundbreaking PLASMABIT technology platform. This innovative solution enables significant time and cost savings compared to traditional drilling methods, opening up vast new possibilities in oil & gas, geothermal energy, mining, and tunneling.
BeZero Carbon
Series A in 2022
BeZero Carbon operates a global rating agency focused on the voluntary carbon market. It provides independent, risk-based assessments of carbon projects, empowering organizations to make informed climate decisions.
Leko Labs
Series A in 2022
Leko Labs SA is a Luxembourg-based manufacturer specializing in sustainable building components. Founded in 2014, the company produces Leko, a glue-free mass timber construction system that serves as a sustainable alternative to traditional concrete and steel. By utilizing sustainably sourced wood, Leko Labs aims to reduce the carbon footprint associated with construction. Their cross-laminated timber technology not only provides structural strength but also enhances acoustic and thermal insulation. The company implements advanced technology, including machine learning algorithms and digital automation, to streamline the design and prefabrication processes. This approach enables faster and more efficient construction, contributing to the shift towards environmentally friendly housing solutions.
H2Pro
Series B in 2022
Founded in 2019, H2Pro develops innovative water-splitting technology for producing hydrogen fuel. Its proprietary E-TAC method decouples hydrogen and oxygen evolution reactions, enabling efficient and sustainable green hydrogen production.
INERATEC
Series A in 2022
INERATEC develops sustainable fuels and power-to-X plants to replace fossil fuels with carbon-neutral alternatives. The company focuses on renewable e-fuels and synthetic chemical products that enable transportation and industrial processes to run on climate-friendly energy. It produces renewable hydrogen and other greenhouse gases, which are transformed into products such as e-kerosene, carbon dioxide-neutral diesel, synthetic waxes, and methanol, allowing chemical plants to operate using synthetic fuels with climate-neutral energy, reduced chemical waste, and enhanced climate protection.
Modern Hydrogen
Series B in 2021
Modern Hydrogen is a pioneering energy technology company that develops distributed hydrogen production systems. Their core mission is to enable commercial and industrial operations to generate clean hydrogen on-site, transforming heat from boilers and furnaces into usable power. This process efficiently sequesters carbon, helping clients reduce emissions, save money, and enhance operational resilience during power outages.
Betteries
Seed Round in 2021
Betteries manufactures modular, scalable energy systems designed to store and deliver electric power. Each system can store between 3 kWh to 12 kWh of energy, offers fast charging capability, and provides up to 5 kW of DC or AC power. They are adaptable for various charging sources and equipped with smart electronics for remote monitoring via an IoT platform. Betteries caters to e-mobility, off-grid productive use, and on-grid backup power needs.
Bloom Biorenewables
Seed Round in 2021
Bloom Biorenewables Ltd is a Swiss company established in 2019, specializing in the development of innovative technologies that convert wood and agricultural waste into renewable materials as substitutes for petroleum-based products. The company focuses on producing bio-based materials for various sectors, including fragrances, plastics, and textiles, thereby offering sustainable alternatives to fossil fuels. By introducing a novel approach to the production of biorenewable products and fuels, Bloom Biorenewables aims to make a significant impact in promoting the use of sustainable resources and addressing climate change challenges.
GA Drilling
Series C in 2021
GA Drilling is a high-tech company developing and commercializing its groundbreaking PLASMABIT technology platform. This innovative solution enables significant time and cost savings compared to traditional drilling methods, opening up vast new possibilities in oil & gas, geothermal energy, mining, and tunneling.
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