Extantia Capital

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.

Yair Re'em

General Partner

Past deals in Nanotechnology

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.

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.

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.
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