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A groundbreaking study suggests Earth may harbor an immense, untapped energy source—trillions of tons of hydrogen gas hidden deep beneath the surface.

Even more remarkable? It could power the world for centuries.

Research led by Geoffrey Ellis of the U.S. Geological Survey estimates that geologic hydrogen reserves total approximately 6.2 trillion tons (5.6 trillion metric tons), offering a potential low-carbon energy source that could reduce global dependence on fossil fuels for the next 1,000 years.

This naturally occurring hydrogen forms through geochemical reactions within the Earth's crust. While significant reserves have already been found in Albania and Mali, scientists believe vast deposits exist worldwide. However, much of this hydrogen may be buried too deep or located offshore, posing challenges for large-scale extraction.

A study published in Science Advances suggests that even extracting just 2% of these reserves could supply the world's hydrogen needs for 200 years, contributing to global net-zero carbon goals. The estimated energy potential of these reserves surpasses all proven natural gas deposits, reinforcing hydrogen’s promise as a clean energy alternative.

Despite this potential, experts like Prof. Bill McGuire of University College London caution that developing the necessary infrastructure for large-scale hydrogen extraction would require massive global investment. Nevertheless, the findings highlight the urgency of further research into geologic hydrogen, which could play a pivotal role in the transition to sustainable energy.