Windstalk concept is a wind farm without the turbines
Wind turbines are an increasingly popular way to generate clean energy with large-scale wind farms springing up all over the world. However, many residents near proposed wind farm sites have raised concerns over the aesthetics and the low frequency vibrations they claim are generated by wind turbines. An interesting Windstalk concept devised by New York design firm Atelier DNA could overcome both these problems while still allowing a comparable amount of electricity to be generated by the wind.
instead of relying on the wind to turn a turbine to generate electricity, when the pole sways in the wind, the stack of piezoelectric discs are compressed, generating a current through the electrodes. In a nice visual way to indicate how much – if any – power the poles are generating, the top 50cm (20 in.) of each pole is fitted with an LED lamp that glows and dims relative to the amount of power. So when the wind stops, the LED’s go dark.
The WIndstalk project is still only a concept, so the designers haven’t determined the optimal shape for the stalks, saying computer simulations could be used to devise the best profile for maximizing the pole’s movement and variation. Even so, the design team estimates that the overall electricity output of the concept would be comparable to that of a conventional wind turbine array because, even though a single wind turbine that is limited to the same height as the poles may produce more energy than a single Windstalk, the Windstalks can be packed in much denser arrays.