The 165-metre, 41-storey tower hosts the headquarters of the French electric company. The raised technical flooring is 50×50 cm SFloor type. A change compared to the usual standard 60×60 cm, used to better adapt to and follow the specific needs of the customer and building plan. This greatly prestigious architectural work is located at the centre of the Defense parvis. The entire building was constructed on just 2 thousand square metres of land surface. The special SFloor feature of immediate treadability and use (even with large loads) make very difficult site logistics possible, which was supplied completely at night time only for all its needs.