DOI: 10.5281/zenodo.16879950
title: Dataset: State-of-the-art review of public perceptions and reactions to hydrogen and fuel cell technologies in the European Union

description: Summary

·       *Purpose.* Provides the underlying tabulations and secondary analyses used to assess public awareness, attitudes, and acceptance of hydrogen energy and technologies across the EU27, together with a curated state‑of‑the‑art literature mapping.

·       *What's here.* Aggregated crosstabs by country, gender, and age for key survey items; descriptive statistics; and succinct literature summaries with identifiers. Content is organised as Appendices A–D inside the accompanying supplementary file.

·       *Status.* This deposit contains derived, publication‑ready tables and figures rather than respondent‑level microdata. Item‑level totals vary because of standard survey routing and missingness.

·       *Audience.* Researchers in energy transition, policy analysts, and replication reviewers.

Contents of this deposit

·       *Appendix A.* Overview of 30 peer‑reviewed and project sources on European public perceptions of hydrogen with links or DOIs; country coverage summary indicating 24 of the EU27 represented; temporal coverage 2005–2024; and short narrative abstracts for each study.

·       *Appendix B.* Secondary analysis by gender and age for awareness and opinion items, including distributions and means.

·       *Appendix C.* Country‑by‑country breakdowns for awareness and four attitudinal items with descriptive patterns.

·       *Appendix D.* Machine‑readable tables reporting Ns, percentages, and means for awareness and attitudinal items, stratified by gender, age, and country.

Geographic and temporal coverage

·       *Geography.* EU27, with full reporting by member state in the secondary analysis.

·       *Time window.* Core literature mapping spans 2005–2024. Underlying Gallup fieldwork year is as per the companion article.

Measures covered (variable labels)

·       *A02_4.* Awareness and familiarity with hydrogen as an energy source.

·       *B07_2.* Views on hydrogen reducing national energy dependence.

·       *B07_3.* Views on hydrogen as a sustainable energy source.

·       *B07_5.* Views on hydrogen being as polluting as diesel or gasoline (reverse coded for positive perception).

·       *B07_6.* Views on the safety of hydrogen compared with other energy sources.

·       *Demographics.* Gender, age groups, country.

File formats and structure

·       *Primary file.* “Supplementary material for Zenodo_State‑of‑the‑art analysis Hypop_Jensen et al. 2025.docx” containing Appendices A–D.

·       *Structure.* Appendices are modular: A (literature), B (gender and age distributions), C (country breakdowns), D (tables with Ns, percentages, and means).

·       *Accessibility.* Tables are laid out for direct extraction to CSV; identifiers embedded in headers.

·       *No microdata.* Respondent‑level records are not included.

Reuse notes

·       *Intended use.* Comparative snapshots, briefing notes, replication of descriptive figures in the companion article, and policy analytics.

·       *Citation granularity.* Cite this Zenodo record for any reuse of Appendix D tables or figures derived from them; cite primary studies in Appendix A when drawing on their findings.

·       *Interoperability.* Variable labels are stable across tables and can be mapped to new codebooks or data dictionaries.

Ethics and privacy

·       *Compliance.* Aggregated reporting only; no personal data or indirect identifiers are present in this deposit.

·       *Consent and fieldwork.* Ethical oversight and consent procedures follow Gallup standards.

Funding and acknowledgements

·       *Funding.* See the companion article for grant details and project identifiers.

·       *Acknowledgements.* Appreciation to survey respondents and to the teams whose studies are synthesised in Appendix A.

Related works and identifiers

·       *Companion article.* Jensen et al., 2025 (update with DOI on publication).

·       *Literature base.* Appendix A lists 30 sources with DOIs or URLs across EU27 contexts (2005–2024).

·       *Coverage pattern.* Germany most represented in literature mapping; Malta, Cyprus, and Sweden lacked eligible English‑language survey sources.

Keywords

·       hydrogen; public opinion; social acceptance; energy transition; EU27; survey; safety; sustainability; energy dependence; pollution perceptions; cross‑country comparison; replication

 

*Change policy.* Any corrections will be listed here with date stamps; tables will maintain variable labels for backward compatibility.