Global Trends in Innovation Across Hydrogen Production, Supply and Demand Chains

The global shift away from fossil fuels necessitates swift and transformative action, underscoring the need for timely and accurate insights into emerging low-carbon technologies. This review provides a comprehensive and systematic analysis of innovation trends within the hydrogen technology ecosystem. Drawing on global patent data as a key indicator of industrial innovation, the study offers a forward-looking assessment of technological developments spanning the entire hydrogen value chain like production, storage, distribution, transformation, and end-use applications across various sectors. By evaluating patent activity over time and across regions, the review highlights significant innovation trends, identifies leading industrial contributors, and maps the evolving global competitive landscape. Particular attention is given to regional dynamics and sector-specific breakthroughs, offering a nuanced perspective for policymakers, investors, and stakeholders engaged in energy transition planning. As hydrogen becomes increasingly central to decarbonization strategies worldwide, this study serves as a critical intelligence resource, illuminating current trajectories and signalling potential technological inflection points in the ongoing energy transformation.