TD Installations, issue 4/2013 introduces the subject of Energy renovation of residential buildings with European funding. Comments on the topic are made by representatives of the Ministry of Regional Development, the Bulgarian Association for Construction Insulation, as well as some of the leading companies offering solutions in this field. The Lighting section in the current issue is dedicated to the criteria for office lighting design set in the standard BS EN 12464-1:2011. In the Electrical section readers can learn about the latest online software platforms to design electrical installations in buildings. Among other topics in the issue are: "Intelligent components for building automation", "Substations", "Perimeter security systems", etc.