Japan Joins Horizon Europe: Preparing for Open Science
Japan becomes the 23rd associated country to Horizon Europe, unlocking access to a €52.4 billion funding pillar with open-science requirements.

Stock photo for illustration only, not from the actual event
- Japan is now the 23rd and most populous associated country to Horizon Europe with 123 million people
- The association covers Pillar II focusing on global challenges and industrial competitiveness
- Japanese organizations can now participate on equal terms with EU member states
- Open science compliance via trusted repositories like HAL and Zenodo is mandatory
Japan has officially become the 23rd associated country to Horizon Europe, securing its spot as the most populous participant with a population of roughly 123 million. This association fully covers Pillar II: Global Challenges and European Industrial Competitiveness, which stands as the largest segment of the funding programme dedicated to multinational projects in health, digital, climate, energy, mobility, food, and the bioeconomy.
Previously, Japanese researchers largely participated as a "third country," meaning they could join a consortium but were typically required to bring their own funding. Moving forward, Japanese organizations can participate on entirely equal terms with EU member states, in exchange for a financial contribution to the programme.

Stock photo for illustration only, not from the actual event
Under Horizon Europe regulations, open science is strictly a contractual obligation mandated by Article 17 of the Model Grant Agreement rather than an optional bonus. According to OpenAIRE, only five trusted repositories are currently fully ready for compliance, with HAL and Zenodo serving as prominent solutions that many researchers integrate into their daily workflows.
"In Horizon Europe, open science isn't a nice-to-have. It's a contractual obligation under Article 17 of the Model Grant Agreement."
Dev.to Author
HAL functions as a French open archive enabling researchers to generate a persistent author ID (IdHAL) and a public, auto-updating CV HAL page to showcase their credentials to prospective European collaborators. Meanwhile, Zenodo is a general-purpose repository developed by CERN and OpenAIRE, funded by the EU for over a decade, which hosts the EU Open Research Repository and runs automated compliance checks.
Japan joining Horizon Europe marks a major bridge connecting Asian research institutions directly with European open-science frameworks. Utilizing established platforms like CV HAL for professional visibility and Zenodo for code and data versioning with proper DOIs ensures researchers can navigate stringent compliance requirements smoothly when grant calls open.
For best practices, publications should be directed to HAL for heightened visibility, while code and datasets go to Zenodo for reliable version control. Researchers are also advised to apply CC0 or CC BY data licences as recommended by OpenAIRE to meet all standard framework criteria.
Source: Dev.to
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