Accelerating the Transition to a Hydrogen Economy provides a roadmap in the global economy, from carbon to hydrogen. Within the context of the Industrial Revolution 4.0, the book brings together global expertise from academia and industry to accelerate the science, innovation, and practice of the hydrogen economy to address energy challenges and advance UN Sustainable Development Goals. The book highlights the change of paradigm in the global economy from carbon to hydrogen, disseminating knowledge to readers about climate change and providing a critical overview of hydrogen generation and its utilization in various sectors. Each chapter provides a synopsis of the fundamental knowledge and recent developments to ensure readers of all experience levels and backgrounds benefit. Future perspectives and actionable next steps are presented alongside case studies from different region of the world that provide a roadmap to decarbonization and the energy transition.