The sixth workshop with the stakeholder network was organised as a hybrid event in Kaunas, Lithuania on 20 May 2025. The attendees included representatives from the Lithuanian Ministry of Energy, regulatory authorities, research institutions, industry as well as the Euratom funded projects EASI SMR, EUROfusion and HARPERS.

A brief overview of the HARMONISE objectives, partnership and progress made was followed by detailed presentations of the activities performed and results obtained in Work Packages 1 through 4.

Invited presentations regarding suggestions and insights from aviation regulations, the IAEA Nuclear Harmonisation and Standardization Initiative and the OECD-NEA activities regarding SMR safety assessment and regulation were given, as well.