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.
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Past deals in Sustainability
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.
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.
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.
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.
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.
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.
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