Book excerpt: This book presents the essentials of thermal energy storage techniques along with recent innovations and covers in-depth knowledge of thermal energy applications. Different aspects of thermal energy storage systems are covered, ranging from fundamentals to case studies. Major topics covered include application of thermal energy in water heating, solar cooking and solar pond, thermal energy storage materials for indoor comfort in buildings, thermal management of battery, hydrogen production, reducing carbon footprints, and so forth. Key features: Presents current research and technological updates along with applications and market scenarios in thermal energy storage, thermal management, and applications of thermal energy Explores sensible, latent, and thermochemical energy storage aspects Emphasizes the need and adequate utilization of abundant heat energy for clean energy perspectives Reviews use of thermal energy in hydrogen production, the oil and gas sector, along with market analysis Includes pertinent case studies This book is aimed at researchers and graduate students in energy and mechanical engineering, energy storage, and renewables.