From 25-29 October 2021, we celebrated the European Sustainable Energy Week (EUSEW) - the largest event in Europe, organised by the European Commission, dedicated to energy efficiency and renewable energy sources. This year's edition was held under the theme: 'Direction 2030: transforming Europe's energy system', and the MULTIPLY project was given a special place on the agenda: it was the topic of one of the EnergyTalks.