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 Nanotechnology
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.
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.
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.
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