Digital Twin Technology for the Energy Sector: Fundamental, Advances, Challenges, and Applications introduces the energy sector to this innovative technology and its potential for supporting energy transition. The book outlines the fundamentals of digital twin technology (DTT), giving readers a thorough grounding in its theory and use. Additional chapters provide practical, real-world options for applying the technology in a variety of energy sectors, from wind, solar, and hydropower, to the electrical industry and mobility. Its potential uses for energy flexibility, managing supply and demand in electric grids, and energy modeling in real time are also given significant attention. Including insights from a wide range of expert researchers and industry professionals, this book will guide readers from their first steps in DTT to developing innovative applications for the energy sector of the future. Provides a clear grounding in the fundamentals of DTT and opportunities for this innovative method in the energy industry - Guides students and industry practitioners step-by-step from the discovery of techniques to practical model building - Includes examples and case studies presented by a range of global experts - Led by an experienced editorial team of educators and industry professionals A step-by-step guide to digital twin technologies and their applications for supporting energy transition Digital Twin Technology for the Energy Sector: Fundamental, Advances, Challenges, and Applications introduces the energy sector to this innovative technology and its potential for supporting energy transition. This book outlines the fundamentals of digital twin technology (DTT), giving readers a thorough grounding in its theory and use. It then further chapters provide practical, real-world options for applying the technology in a variety of energy sectors, from wind, solar, and hydropower to electrical industry and mobility. Its potential uses for energy flexibility, managing supply and demand in electric grids, and energy modeling in real time are also given significant attention. Including insights from a wide range of expert researchers and industry professionals, this book will guide readers from their first steps in DTT to developing innovative applications for the energy sector of the future. Mohammadreza Aghaei is a distinguished senior researcher and Professor with more than 18 years of experience and expertise spanning multidisciplinary fields, including energy transition, energy systems integration, renewables, solar photovoltaics, smart buildings and grids, as well as smart technologies such as artificial intelligence, Internet of Things, digital twin, unmanned aerial vehicles, autonomous control systems, and intelligent monitoring. His extensive academic journey includes affiliations with prestigious institutions such as Politecnico di Milano, Fraunhofer ISE, Helmholtz- Zentrum Berlin, Eindhoven University of Technology, University of Freiburg, and Norwegian University of Science and Technology. Throughout his career, Professor Aghaei has been actively engaged in numerous national and EU-funded research projects, showcasing his commitment to advancing knowledge and innovation in the field. Presently, he serves as the Coordinator of the EU Horizon 2020 project “COLLECTiEF” - Collective Intelligence for Energy Flexibility, demonstrating his leadership and expertise in spearheading large-scale initiatives. A senior member of IEEE, he has authored more than 150 publications in internationally refereed journals, book chapters, and conference proceedings. His contributions have significantly impacted the academic community and the broader field of energy research, cementing his reputation as a leading authority in the domain. Amin Moazami is a pioneering researcher in smart buildings and energy flexibility and application of distributed intelligence (swarm intelligence, collective intelligence, and multiagent systems) for energy management. He is a Research Manager in Sintef. He was also appointed as an Associate Professor in the Department of Ocean Operations and Civil Engineering at NTNU and as the Head of the Energy Management and Efficiency Research Group (EMERGE). He has strong experience in building performance simulation, energy flexibility, climate robustness and resilience in buildings, occupant behavior, and so on. He was the Coordinator of COLLECTiEF project and was actively involved in several national and international projects. In 2019, he has been awarded an innovation grant (innovasjonsstipend, 2019) for the proposal “A simulation-based tool for development of Collective Intelligence (CI) at urban scale to mitigate the impacts of extreme climate conditions,” focusing on developing a new solution for increasing the energy demand flexibility of urban areas. Gabriele is an emerging researcher in renewable energy, with a focus on the digitalization of solar energy in the built environment. His