Phase Change Materials and Nano-PCMs offers a comprehensive exploration of nano-PCMs and nano-enhanced phase change materials, with particular emphasis on their applications. Divided into ten chapters, it delves into the history of thermal energy storage and PCM technologies, their chemistry, synthesis, and kinetics. Additionally, the book covers the crystallization processes involved. In later chapters, it examines the properties and applications of PCMs, their use in renewable energy, and the role of nanotechnology in phase change materials. It also addresses environmental and economic issues associated with PCM use, concluding with case studies to enhance reader understanding. This book is a valuable and timely reference for those focused on thermal energy storage. It is an essential resource for researchers and students interested in thermal energy storage.