The aim of the course is to develop a kind of well-balanced, responsible thinking about the natural environment and its protection, to make the students acquainted with issues of sustainability and sustainable development, to give them an overwiev about energy consumption in connection with the built environment throughout the whole life cycle. They will gain theoretical knowledge enabling them to develop energy-conscious architectural concepts, design low-energy, renewable energy using buildings, building complexes and settlements efficiently co-operating with the relevant consultant designers. Students gain practical experiences with energy-conscious designing beginning from concept making to planning of the building details in team work. The results are presented within the frame of a professional dibate where the active, convincing, argueing and analyzing, critical participation of students is expected. This subject consists of lectures and practical training, weekly 2 hours each.  By means of the lectures the paper knowledge is shown according to the schedule. During the trainings the students solve a design task from concept making to the building drawings in teams by means of information and consultation. Connecting to their design the students make energetic calculations as well. They have also personal tasks in which they have to do researches.