Welcome to the AeH2 Census of Projects Interactive Map!

The AeH2 Census of Projects, compiled by the Spanish Hydrogen Association (AeH2), is a key reference tool for tracking the development of Spain’s hydrogen sector. It brings together projects led by AeH2 members or involving their participation, providing an overview of initiatives across the entire hydrogen value chain, from research, development and innovation (R&D&I) to commercial projects.

The Census covers projects with a Technology Readiness Level (TRL) of 3 and above, making it possible to track the progress of initiatives from technology development through to industrial and commercial deployment. The interactive map allows users to explore projects using a range of filters and consult the information in table format, facilitating analysis of their geographical distribution, areas of activity and level of technological maturity.

Important information

• Project locations. The locations shown on the map are indicative and may not always correspond to the exact location of each project. For research initiatives carried out by consortia, for example, the location may indicate that of the project coordinator or the main demonstrator.
• Source of information. The published data corresponds to the 2026 update of the AeH2 Census of Projects and has been compiled from information provided by the Association’s members.
• Confidentiality. Members may designate certain data as confidential. This information is not displayed on the interactive map, although the AeH2 technical team may use it to prepare the aggregated analyses included in the Census.

New for the 2026 edition: Annex II

This edition introduces Annex II, dedicated to research projects and demonstrators in relevant environments completed before 1 January 2026. This addition broadens the overview of the hydrogen innovation ecosystem and highlights initiatives that contribute to the sector’s technological advancement.

Explore the full analysis of the AeH2 Census of Projects 2026 to discover the key findings of this edition, the progress of projects, their development prospects and the main barriers facing the sector.