Tour Danube :
The Danube Tower, programmed and developed by Elithis engineering / real estate is the first active residential building in France. This means that it will produce more energy that it uses.
Equiped with an ISSOL semi transparent solar facade full south, and designed with a shape that lowers north winds effects and brings more southern array in the building, it will set the energy bill at 80€/year.
The high-performance building was achieved at a price of 1400€/m².