Energy-generating revolving door

The world's first energy-revolving door, developed by Thomas Rau and OPAi in co-operation with Boon Edam

As part of the concept to turn an existing restaurant into an energy neutral one, OPAi, RAU and Boon Edam have developed the world’s first energy producing revolving door. When you enter the La Porte restaurant at Driebergen railway station (NL), you produce energy yourself.

As you make a full turn of 360 degrees, think of OPAi because Boon Edam donates 360 Euro to OPAi for every door sold world-wide.

See also also the following article by inhabitat.