Geothermal Systems in the Energy Transition Era: Applications, Benefits, Challenges and Future Outlook offers a comprehensive synthesis of the fundamentals, advancements, and contemporary applications of geothermal energy in a single volume.Emphasizing the clean and sustainable nature of geothermal energy, the book explores sources, heat exchanger basics, power generation, heating and cooling applications, thermodynamics of geothermal absorption chillers, hybrid energy systems, and smart optimization applications.The text culminates in discussions on challenges and opportunities for geothermal system development, underlining its importance in meeting global energy demands sustainably and supporting the UNSDGs. This book illuminates the diverse applications, performance factors, environmental and economic considerations of geothermal energy systems, highlighting their role in meeting the world's growing energy needs sustainably.It aims to provide students and industry professionals with a holistic understanding of this dynamic field and its significant impact, addressing the lack of comprehensive, up-to-date resources on geothermal energy systems.