Exergon

Exergon is a venture capital investment firm located in Paris, France, focusing on deep tech solutions aimed at facilitating energy transformation. The company targets investments across various sectors, including energy production, mobility, hydrogen, energy storage, and nuclear energy. By concentrating on these areas, Exergon aims to support innovative technologies that contribute to a sustainable energy future.

Vincent Brillault

Managing Partner

Giuseppe Sangiovanni

Co-Founder and Managing Partner

5 past transactions

Mitico

Seed Round in 2025
Mitico is a company specializing in advanced carbon capture technology aimed at significantly reducing carbon dioxide emissions from various industrial sources. Utilizing its innovative patent-pending granulated metal carbonate sorption technology developed at Caltech, Mitico effectively captures over 95% of CO2 emitted from post-combustion point sources, such as gas-fired power plants and waste-to-energy facilities. By providing carbon capture, utilization, and storage (CCUS) as a service, Mitico enables clients to mitigate their carbon footprints at a competitive cost compared to conventional methods. The company's focus is on helping point source emitters implement effective solutions for mass reduction of carbon emissions.

H2SITE

Series B in 2025
H2SITE is a company specializing in renewable technology for on-site hydrogen production. Their systems and membranes are designed for high-efficiency and purity hydrogen generation, suitable for applications such as separation processes or ammonia cracking. The company's compact technology facilitates the production, transportation, and storage of hydrogen, making it viable to transport and unlocking global hydrogen markets. This approach helps businesses reduce costs associated with transportation and minimize energy waste.

Otrera

Seed Round in 2024
Otrera provides customizable solutions for delivering low-carbon energy to industries and local communities.

TaiSan

Pre Seed Round in 2024
TaiSan is a company focused on the development of innovative battery materials, specifically proprietary quasi-solid gel polymer electrolytes and sodium-potassium metal anodes. These advancements facilitate the creation of quasi-solid-state sodium batteries, which offer superior energy density compared to traditional battery technologies. TaiSan collaborates with battery manufacturers and automotive original equipment manufacturers (OEMs) to scale its technology, having signed 19 non-binding memoranda of understanding. The company's electrolyte and anode materials enhance the performance of sodium batteries, enabling faster charging, minimizing dendrite growth that can limit battery cycle life, and reducing leakage and fire risks. TaiSan's contributions aim to support the automotive industry's transition to more efficient and safer electric vehicles.

VoltR

Seed Round in 2023
VoltR is a manufacturing company focused on restoring lithium batteries to promote sustainability and reduce carbon footprints. The company specializes in collecting and reconditioning lithium batteries, allowing them to be repurposed for various applications, including e-mobility, electronic appliances, and energy storage systems. By extending the lifecycle of these batteries, VoltR enables businesses to achieve cost savings while contributing to environmental conservation.
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