Aquifer Thermal Energy Storage (ATES) in Germany | Aquiferspeicher in Deutschland
2021
Fleuchaus, Paul | Schüppler, Simon | Stemmle, Ruben | Menberg, Kathrin | Blum, Philipp
The time offset between supply and demand in the energy sector can be equalized with seasonal energy storage (at relatively warm or cold temperatures). For the latter, aquifer thermal energy storage (ATES) is considered a promising solution. However, with only a single low-temperature (LT) and another high-temperatures (HT) storage system currently in operation, ATES is little known and not well established in Germany. This study provides an overview of the current ATES development in Germany and discusses strengths and weaknesses, as well as opportunities and risks. Despite a great potential, the market entry of ATES in Germany is impeded by the absence of incentive plans, lack of knowledge and non-existent pilot systems. Storage temperatures of HT-ATES (> 50 °C) have increased its potential for use, yet result in increased technical and legislative risks. Thus, the commercial application of ATES in Germany is only feasible through the adjustment of legislative requirements, the implementation of funding programs and installation of demonstration plants proving the economic and ecological benefits.
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