Underground Hydrogen Storage

Underground Hydrogen Storage refers to the process of storing hydrogen gas in subterranean geological formations. This technique is used as a means of energy storage, aimed at balancing energy supply and demand, especially in relation to renewable energy sources like wind and solar power. The stored hydrogen can be used later for energy production, fueling stations, or chemical feedstock.Typically, suitable geological formations for underground hydrogen storage include depleted oil and gas reservoirs, aquifers, and salt caverns. The process involves injecting hydrogen into these formations under pressure, where it is secured by the impermeable geological layers above, preventing leakage. This method is of particular interest in the context of transitioning to a hydrogen economy, as it allows for large quantities of hydrogen to be stored efficiently and economically, addressing challenges related to its low energy density and volatility.