As the global energy landscape shifts toward renewables like wind and solar, the need for large-scale, flexible energy storage becomes increasingly urgent. Hydrogen, with its high energy density and clean combustion, stands out as a key enabler of this transition. Underground geological formations—including depleted hydrocarbon reservoirs, saline aquifers, and salt caverns—offer a promising solution for large-scale and long-term storage.
Underground Hydrogen Storage (UHS) is therefore emerging as a critical technology for balancing energy supply and demand at scale.