Store excess heat in the ground

Seasonal thermal energy storage

Seasonal Thermal Energy Storage (STES) is a rather new method and notably more affordable and simple than storing electricity. Heat is recovered when it is available, stored into wells in the ground, and used to heat rooms and domestic water during the cold season. Respectively cold can be stored in the ground to use in a building in the summer.

Solar heat is recovered with collectors or, for example, tube sets integrated on the roof or in wall surfaces. In addition to buildings, these tube sets can be installed in parking areas and roads paved with asphalt. Moreover, cooling heat and waste heat from ventilation can be recovered and stored in the ground.

Storage can be applied to houses of various sizes, and it can be used locally by several houses. Seasonal storage in the ground requires that ground water conditions and existing infrastructure are taken into consideration.

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