Underground hydrogen energy storage system

Where can hydrogen be stored underground?

Underground hydrogen storage options include storage in depleted hydrocarbon fields, saline aquifers, and salt caverns. Geological storage of by-product CO 2 will also be required depending on the source of the hydrogen. Source: adapted from Griffioen et al. (2014).

Is underground hydrogen storage a viable solution for large-scale energy storage?

This review paper provides a critical examination of underground hydrogen storage (UHS) as a viable solution for large-scale energy storage, surpassing 10 GWh capacities, and contrasts it with aboveground methods.

What is underground hydrogen storage (UHS)?

A key enabler of this transition is underground hydrogen storage (UHS), which has the potential to store hydrogen (H 2) at scale; however, its deployment remains a critical challenge due to technical, operational, and engineering complexities.

Where is hydrogen stored in geological media?

Experience to date with hydrogen storage in geological media is limited to four salt-cavern projects at Teesside (UK) and the US Gulf Coast, and to three aquifer storage projects for town gas (50% hydrogen) storage in the 1960s and 1970s (Panfilov 2016).

What is underground storage?

Underground storage is a proven way to store a huge amount of energy (electricity) after converting it into hydrogen as it has higher energy content per unit mass than other gases such as methane and natural gas.

Why is hydrogen storage important?

Hydrogen storage, especially in underground storage (because of its high capacity and lower cost) as energy storage and in the way to the success of fossil to the renewable energy revolution, has gained lots of attention worldwide in the last decade.