A novel supercooling long-term thermal energy storage material for efficient utilization of solar and waste heatWe have invented a completely new long-term heat storage material, which is based on a mixture of supercooling phase change material and cross-linked polymer. The aim of the research is to further develop properties of the novel material for efficient utilization of heat in practical scale. In addition, this research will estimate the feasibility of the material for improving the energy efficiency of buildings and industry by using solar and waste heat.