Mantle8 launches Pyrenees natural hydrogen search after winning five-year permit

June 7, 2026 |

In the UK, Gas World reported that French start-up Mantle8 is set to begin piloting natural hydrogen detection and quantification technologies in the Pyrenees after securing a five-year exploration permit from the French government.

The five-year natural hydrogen and helium permit covers a 739km2 area in the mountain range where it previously detected the presence of an “active hydrogen generating source” that replenishes sealed reservoirs, according to the report.

The permit will allow the firm to conduct geophysical surveys ahead of seeking final approval to start drilling.

Natural hydrogen, also known as white hydrogen, is formed by natural geological processes within the Earth’s crust, where it can accumulate and continue to be generated over time.

Under the Hydrogeco demonstration project, Mantle8 aims to characterize and quantify natural hydrogen resources and validate its detection and quantification technologies, the report added.

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Category: Fuels

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