Science & TechFact

No wind turbine can harvest more than 59 percent of the wind.

In 1919 Albert Betz showed that a turbine can't stop the air completely, or it would pile up and nothing would flow through. The optimum leaves one third of the wind speed behind the rotor. That gives a physical ceiling of 16/27, or 59.3 % of the wind's energy. Modern turbines reach about 45 to 50 % at their best.

Useful: Wind power scales with the cube of speed: twice the wind means eight times the power.

Source: en.wikipedia.org

Energie PhysikWind

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