Underground Hydrogen: New Pilots and Big Questions

Natural hydrogen is hydrogen that forms in rocks underground. People have found it in places like Bourakébougou in Mali, where a well has produced gas for a village. Scientists study how hydrogen forms when water reacts with special rocks.

Startups and labs are testing ways to get this hydrogen. Companies are doing pilots in the United States, for example in Minnesota and Kansas, and researchers say more field work is needed. If it works, this hydrogen could be a low-carbon option for some uses. It may help small towns and industry, but experts warn we do not yet know how much we can safely take from the ground.