The 4th International Sustainable Energy Conference – ISEC 2026 invites researchers, industry leaders, and energy policymakers from around the world to contribute their newest findings, innovations and demonstrations toward a sustainable energy future.

ISEC 2026 will focus on the question: How can we achieve energy sovereignty within a time horizon dictated by climate change and defined by politics?
Global solutions such as the transformation of our economic systems towards a sustainable circular economy, the complete phase-out of fossil fuels, the implementation of sector coupling, energy storage systems, and the smart electrification of the energy supply will be central themes in presentations and discussions.

The European Climate, Infrastructure and Environment Executive Agency (CINEA) is organising the 20th edition of EU’s flagship event for clean energy and renewables, the European Sustainable Energy Week. 

The 20th edition of European Sustainable Energy Week (EUSEW) will take place on 9-11 June 2026 in Brussels and online, under the overarching theme of ‘A clean, secure and competitive Energy Union’.   

The European Sustainable Energy Week is the biggest annual event dedicated to renewables and efficient energy use in Europe, and it features a 3-day Policy Conference, the EUSEW Awards ceremony, as well as networking opportunities at the Energy Fair, celebrating the people, projects, and initiatives advancing Europe’s transition to clean and sustainable energy.  During the conference, youth voices are put forward through the Young Energy Ambassadors and the European Youth Energy Day. Last but not least, the Sustainable Energy Days give visibility to and foster clean energy solutions in the EU and around the world, from March to June 2026.