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Geologic Hydrogen: Study Shows Canadian Mine Seeps 140 Tonnes of Fuel per Year

A new study finds a Canadian mine releases about 140 metric tons of natural hydrogen annually, suggesting geologic hydrogen could be tapped as cleaner fuel, though commercial viability remains unproven.

AI News Feed · 2026-08-17 19:02

The findings add to growing evidence that natural hydrogen generation is a real geological process, but they also highlight the gap between natural seepage and commercial-scale production. Laurent Truche, a geochemist at the University of Grenoble Alpes, said the remaining challenge is not proving that natural hydrogen exists but proving that it can be produced economically and reliably at commercial scale. In 2024, his team reported that at least 200 metric tons of hydrogen flow out of the Bulqizë chromium mine in Albania every year.

Geologic hydrogen is created underground when water reacts with iron-rich rock or when radioactive decay splits water molecules. Unlike conventional hydrogen production, which typically requires energy and generates greenhouse-gas emissions, tapping natural reservoirs could provide a zero-carbon fuel source. The US Geological Survey has estimated that trillions of tons of hydrogen are produced within Earth's crust; if a small fraction could be recovered, it would meet global hydrogen demand for centuries.

A wave of exploration has spread worldwide, involving startups such as Australia's HyTerra and Bill Gates-backed Koloma, which have been exploring ancient oceanic rocks in the US Midwest. However, no commercially viable reservoir has been reported, and public data remains scarce as companies compete for investment.

Earlier this year, a team in the mountains of Oman drilled a one-kilometer borehole and injected 50,000 cubic meters of water into the rock. When the well was opened months later, gas spewed out, and it was 90% hydrogen. Jo Shannon, a geoscientist at the University of Southampton, described the result as promising but cautioned that it remains unknown whether the hydrogen was produced through the stimulation or had been present in the formation all along. Researchers are also exploring ways to accelerate hydrogen-producing reactions by injecting water, heat, or catalysts, with ARPA-E backing more than a dozen such projects.