Abstract
The topic of energy storage is crucial because of the rising demand for energy, the finite nature of fossil fuels, the rise in environmental contaminants, and other factors. Phase change material (PCM) latent heat storage systems are an efficient energy storage method that has attracted a lot of attention lately. The introduction of phase change materials and the relations between them for thermal energy storage have been covered in this chapter. The economic rationale behind the usage of these materials is equally as significant as the environmental, and technological concerns will come after these materials undergo phase shift, storing thermal energy and releasing it as needed.