Hydrogen policies and legal frameworks in the European Union have advanced significantly in recent years, resulting in a situation where hydrogen regulation has developed ahead of the markets themselves.This has put the EU legal system to a stress test as it strives to enable a trajectory toward ambitious hydrogen targets while navigating structural challenges.Challenges remain in scaling up production capacities, developing infrastructure, and addressing bottlenecks in the permitting regimes.The first dedicated book on the topic, Hydrogen Regulation in Europe offers an in-depth discussion of the permitting regime for the individual components of the hydrogen supply chain, both in upstream and downstream hydrogen market regulation.The chapters in this volume offer diverse case studies and best practice examples from various EU Member States, looking forward to regulatory issues that may arise from scaling up hydrogen production.Featuring contributions from leading and emerging scholars across the EU, Hydrogen Regulation in Europe is poised to be a key reference for anyone hoping to navigate the intricate legal aspects of decarbonizing the gas sector.