LARGE THERMAL ENERGY STORAGE (LTES) WILL HELP SHAPE THE FUTURE ENERGY LANDSCAPE
By Geoffroy Gauthier, Energy and Calculation Engineer - Project Manager, PlanEnergi
LTES emerges as a key for the energy transition, facilitating cost-effective and reliable renewable heating and cooling for District Heating and other large-scale applications. Moreover, it enables sector coupling, harnessing excess heat and bolstering electricity grid flexibility. During periods of surplus renewable electricity, heat or cold can be generated, stored, and later deployed during peak demand, curbing additional electricity consumption. Similarly, excess heat from renewable-energy-based combined heat and power plants can be stored in LTES for later use, mitigating demand spikes while generating more profits for the plant operators. This use is key in the business model behind the Pit Thermal Energy Storage (PTES) in Høje Taastrup.
Figure 1: Aerial view of the Pit Thermal Energy Storage in Høje Taastrup (Denmark), finished in 2022 and commissioned in 2023. Photo: Ioannis Sifnaios
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