Elering’s new office building is technically a reconstruction, an extension. Although everything is new, the small remaining part of the former structural frame came to define the building’s location as well as its overall height and width. It is actually the old building extended by three times, a simple rectangle with two particular islands in the middle of the office spaces located along the perimeter. The former atrium has become a secluded inner courtyard balanced by the second enclosed and highly secured control centre in the middle part of the extension.