Underground Thermal Energy Storage (UTES) is the concept of storing excess heat in the ground in the summer, to then be extracted in the winter. Renewable energy sources such as solar thermal produce most of their heat when it is not required and hence, it is wasted. For this reason, it is becoming increasingly common to use integrated seasonal heat storage to improve the total system efficiency.
An Underground Thermal Energy Storage (UTES) system is ideal for systems with at least a 100kW energy requirement (predominantly heat) and a storage volume of >10,000m³.
The three main components of the system are:
A borehole thermal energy storage (BTES) probe field differs from standard ground-source boreholes, as the main objective is to store heat effectively. The design is therefore based around these key considerations:
RAUGEO PE-Xa probes are the only ground source probes suitable up to 95°C.