Principles of underground energy storage

How do underground thermal energy storage systems work?

Underground thermal energy storage (UTES) systems store energy by pumping heat into an underground space. There are three typical underground locations in which thermal energy is stored: boreholes, aquifers, and caverns or pits. The storage medium typically used for this method of thermal energy storage is water.

What is deep underground energy storage?

Deep underground energy storage is the use of deep underground spaces for large-scale energy storage, which is an important way to provide a stable supply of clean energy, enable a strategic petroleum reserve, and promote the peak shaving of natural gas.

What are the different types of underground thermal energy storage?

There are currently three common types of Underground Thermal Energy Storage ( Fig. 6) [ 77, 78, 79 ]: Aquifer Thermal Energy Storage (ATES) is an open-loop energy storage system that uses an aquifer as a storage medium for thermal energy and groundwater as the thermal energy carrier.

What is underground thermal energy storage (SHS)?

SHS can be developed at a small-scale (<10 MW) above surface technology or at a large-scale system in the subsurface. Underground Thermal Energy Storage (UTES) is a form of energy storage that provides large-scale seasonal storage of cold and heat in underground reservoirs [ 74, 75, 76, 77 ].

Is underground thermal energy storage a good introduction?

Finally, current real life data and statistics are include to summarize major global developments in UTES over the past decades. The concise style and thorough coverage makes Underground Thermal Energy Storage a solid introduction for students, engineers and geologists alike.

What is the history of underground thermal energy storage?

ly cool ground.2.1.2 Historical DevelopmentTechnology of underground thermal energy storage has a 40-year history, which egan with cold storage in aquifers in China. Outside China, the idea of UTES started w