EnergyWatch

Danish subsupplier aims to make millions from wind turbine problems

Danish company PolyTech has developed a protective "swim cap" for wind turbine blade tips, preventing erosion. The industry showed initial skepticism, but sales are now accelerating, tells director Mads Kirkegaard.

Photo: Westar Energy

In five days of average rotations, the outermost tip of a wind turbine blade covers a distance corresponding to Earth's circumference. The speed of its rotation averages at 350 km/h, as it is simultaneously exposed to the elements in the form of sunlight, freezing temperatures and water.

These elements degrade and abrade a turbine blade's tip, cutting short both the productivity and longevity of turbines – something estimated to cost billions globally.

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