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Compressed Air Energy Storage

Underground Thermal Energy Storage

The thermal energy storage potential of underground tunnels used as heat exchangers - ScienceDirect

Aquifer thermal energy storage

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A partially underground rock bed thermal energy storage with a novel air flow configuration - ScienceDirect

The thermal energy storage potential of underground tunnels used as heat exchangers - ScienceDirect

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Overview of Large-Scale Underground Energy Storage Technologies for Integration of Renewable Energies and Criteria for Reservoir Identification - ScienceDirect

Heat recovery from the London Underground in Islington, United Kingdom - Celsius Initiative

The thermal energy storage potential of underground tunnels used as heat exchangers - ScienceDirect

Rechargeable Batteries for Grid Scale Energy Storage