Abandoned mine hydrogen energy storage

Can underground space energy storage technology be used in abandoned coal mines?

The underground space resources of abandoned coal mines in China are quite abundant, and the research and development of underground space energy storage technology in coal mines have many benefits.

Can abandoned mines be turned into energy storage?

Turning abandoned mines into energy storage is one example of many solutions that exist around us, and we only need to change the way we deploy them,” study co-author Behnam Zakeri said. A novel technique called Underground Gravity Energy Storage turns decommissioned mines into long-term energy storage solutions.

Where is hydrogen storage feasible?

Hydrogen storage is feasible in aboveground infrastructures as well as in underground constructions. Proper geological environments for underground hydrogen storage are porous media and rock cavities.

Can pumped storage be used in abandoned mines?

Many countries in the world have already begun to study the pumped storage of underground reservoirs in abandoned mines. For example, in 2011, the Niedersachsen State Energy Research Institute in Germany planned to use the Grund abandoned gold mine roadway in Upper Harz region to build an all-underground pumped storage power station [ 62 ].

Why do abandoned mines and depleted hydrocarbon reservoirs need to be built?

In the case of abandoned mines and depleted hydrocarbon reservoirs, the initial construction aimed to extract natural resources, not gas storage. Thus, the available storage volume is fixed and only slight changes can occur. Moreover, the stages of geological investigation and exploitation are missing in these options minimising the cost.

Can coal mines be used as hydrogen storage sites?

Coal mines have been investigated for their potential to serve as storage sites for natural gas and carbon dioxide. Recently, some authors have also suggested exploring their suitability to serve as hydrogen storage sites. Only a limited number of studies are available in this regard.