Mantle8 is a natural hydrogen exploration company that develops proprietary subsurface modelling and exploration technologies, including HOREX, a multiphysics platform that produces 4D images of active underground hydrogen systems. Its exploration framework identifies reservoirs where an active hydrogen-generating source, continuous replenishment, and a sufficiently sealed reservoir converge.
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Capital activity and funding progression
Frequently Asked Questions
Where is Mantle8 located?
Mantle8 is located in Grenoble, France.
What industries does Mantle8 operate in?
Mantle8 operates in the following industries: natural hydrogen, hydrogen, energy, clean technology, exploration technology.
When was Mantle8 founded?
Mantle8 was founded on 2026-05-14.
How much total funding has Mantle8 raised?
Mantle8 has raised a total of $33,060,000.
Who are the investors in Mantle8?
The investors in Mantle8 are: European Union Just Transition Fund (via FEDER/FSE+/JTF programme, Auvergne-Rhône-Alpes region), Undisclosed Private Investors, Sandwater, Breakthrough Energy Ventures, Ecotechnologies 2 fund managed on behalf of the French government by Bpifrance, IP Group, Wind Capital, Calderion.
What is Mantle8 and what does the company do?
Mantle8 is a deep-tech company based in Grenoble, France, that specializes in the exploration and assessment of natural hydrogen resources. It uses proprietary geoscience technologies to identify, image, and quantify underground natural hydrogen reservoirs.
How does the Mantle8 exploration technology work?
Mantle8 employs a science-first approach that integrates geological, geophysical, and geochemical data to create accurate predictive models. Its technology stack includes GeoLogix for identifying hydrogen-generating zones, HOREX for 3D imaging of subsurface systems, APoGeH for geochemical quantification, and Simul8 for reservoir simulation.
Why is natural hydrogen important for Mantle8?
Natural hydrogen is considered a promising clean energy source because it burns without releasing CO2 and has high energy density. Mantle8 aims to unlock this resource as a low-cost, sustainable alternative to fossil fuels and energy-intensive green hydrogen production methods.
What is the Mantle8 mission regarding hydrogen production costs?
Mantle8 is working to make natural hydrogen a commercially viable energy solution by 2030, with economic models projecting production costs as low as 0.80 euros per kilogram.
Does Mantle8 exploration harm the local environment?
Mantle8 designs its technologies to minimize environmental impact. Unlike conventional techniques that may use seismic vibrators or explosives, the company utilizes methods with a very limited footprint.