Phase change materials (PCMs) are used in latent heat storage (LHS) systems to effectively store thermal energy. Compact energy storage systems prefer PCMs because they show minimal size changes and are capable of storing latent heat during phase transitions. However, longer storage and release times are required due to their slower thermal conductivity, which calls for more advanced methods. In this paper investigation, the thermal conductivity of PCM was raised by using a finned HP heat pipe. When compared to a finless pipe, ANSYS simulations demonstrated a 42.8% reduction in melt completion time (four hours) at a surface temperature of 70°C. This development creates the groundwork for the development of a large-scale thermal energy storage system that is effective and overcomes the limitations of PCM heat transfer.