There's Enough Hydrogen Underground to Power Earth for 170,000 Years

Why It Matters

If extraction becomes commercial, geologic hydrogen could undercut fossil‑fuel prices and accelerate decarbonisation of heavy industry, reshaping the emerging hydrogen economy.

Key Takeaways

• Geologic hydrogen could meet global energy demand for 170,000 years
• DOE estimates extraction cost under $1 per kilogram, far below green hydrogen
• Canadian Shield identified as major, economically viable hydrogen source
• Start‑up Vema Hydrogen begins test drilling, targeting iron‑rich rock reactions
• Major technical and investment hurdles remain for commercial scale extraction

Pulse Analysis

The concept of geologic hydrogen—hydrogen trapped in ancient rock formations—has moved from academic curiosity to a potential cornerstone of the energy transition. Unlike green hydrogen, which requires costly electrolysis powered by renewable electricity, geologic hydrogen can be mined directly, and the U.S. Department of Energy’s sub‑$1/kg cost estimate puts it in the same price band as conventional natural gas. This cost advantage could make hydrogen a realistic fuel for steelmaking, shipping, and other hard‑to‑abate sectors that have struggled with the economics of green‑hydrogen projects.

Canada’s Canadian Shield, a Precambrian craton spanning much of the country’s north, has emerged as the world’s most promising geologic‑hydrogen basin. A collaborative study by Oxford, Durham and Toronto universities, published in Nature Reviews Earth & Environment, quantified billions of tons of hydrogen locked in iron‑rich basalts. Startup Vema Hydrogen has already drilled two 1,000‑foot test wells in Quebec, using water injection to trigger chemical reactions that release hydrogen from the rock matrix. The company’s early results suggest that similar deposits could be replicated globally, turning a once‑theoretical resource into a commercially viable supply chain.

Nevertheless, the path to market is steep. Locating high‑grade deposits requires new geophysical surveying techniques, and extracting hydrogen safely at scale demands breakthrough engineering to avoid costly water‑rock interactions and ensure environmental compliance. Substantial capital investment will be needed to move from pilot wells to industrial‑scale production, and policymakers must craft incentives that de‑risk early projects. If these challenges are met, geologic hydrogen could reshape the hydrogen economy, offering a low‑cost, zero‑carbon fuel that accelerates decarbonisation goals worldwide.