It is not uncommon to see renewable energy considered in modern design & architecture; here is one innovation that caught my attention: the world’s first revolving door that harnesses power from kinetic energy.
A cafe in the Netherlands has installed an energy generator in their revolving door and so whenever someone walks through it, the energy produced is put back in to their coffee shop.
“The door is expected to generate around 4600 kwh of energy each year, which may not sound like much – but every little bit helps. To enhance the design, the team decided to include a transparent ceiling to show how the system works, and LEDs display the amount of energy that it is generated each time someone walks in the door.”
… and now the World’s funniest revolving door video: