The major shortcoming of the current wind turbines is that only about half of the wind force is rotating the turbine to generate electricity. The other half of the wind energy is actually working against us - as it applies strong forces against the propeller, the tower and the base. This not only reduces the electrical output of the turbine but also affects the lifespan of the blades and requires a more expensive infrastructure (tower and base) All this leads to an increased cost of the wind generated energy.

The good news is that this situation may soon change thanks to a new VAWT turbine created by Canadian engineer Dan Bostan. Here is a brief illustration of this solution nicknamed:

"The Chopper"

 

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