The transformation of the global energy system in line with the Paris Agreement requires rapid uptake of renewables throughout all kinds of energy use. As a result the low-carbon heating technologies are growing, but the energy demand is still mostly met by fossil fuels. In order to accelerate a wider transition to renewable energy solutions in the heating sector, thermal energy storage (TES) technologies can be used. TES help to integrate high shares of renewable energy in power generation, industry and buildings. Several energy storage options exist now, but the one that has gained increasing attention and is topic of interest in this thesis is the latent heat thermal energy storage (LHTES) because it offers considerably higher energy density at a nearly constant temperature level if compared to sensible storage systems.