Book excerpt: Accelerating the Transition to a Hydrogen Economy: Achieving Carbon Neutrality provides a guide to the transition to net zero carbon emissions through the hydrogen economy. Within the context of the Industrial Revolution 4.0, the book explores the implications of the hydrogen economy on the nexus of food-waste-energy and provides an overview of the impacts of the hydrogen economy on the energy industry. The book examines the role of the hydrogen economy in achieving net zero carbon emissions in the waste sector, methods for achieving decarbonization in different industries and parts of the economy, and the technologies that can achieve this. Each chapter provides a synopsis of the fundamental knowledge and latest developments to ensure readers of all experience levels and backgrounds can benefit from the book. Future perspectives and actionable next steps are suggested alongside case studies that provide a roadmap to decarbonization. - Evaluates the nexus of technology, society, environment, and economics for the hydrogen economy from the perspective of sustainability - Critically analyzes current and potential contributions of the hydrogen economy to net zero carbon emission - Offers insights to government and policymakers on how to support and accelerate the hydrogen economy for decarbonization