The Window Stakeholders had asked for a meeting with Stefan Moser, Head of Unit DG ENER B.3. and his colleagues to present and discussed the “Joint position paper on the Renovation Wave (March 2021)”. In that meeting the use of transparent building parts and their positive impact on energy efficiency were emphasized. During the meeting the stakeholders also presented the Energy Balance principle to the members of the Commission, which in short stands for a more realistic approach on the energy performance of windows. The meeting was positive and both sides will stay in contact to bring the renovation wave further ahead in order to fulfil the European Union’s climate targets.