4-blade wind turbine (or 3)

This DIY project allows you to build a small wind turbine with blades that are profiled like those of the 'big ones'. With the help of a motor coupled to a gearbox, both of which are used in reverse mode, it is even possible to produce enough electricity to light a small LED.

Wind energy is exploited on a large scale in our neighbouring countries of Austria and Germany, which already produce 10% and 22% of their electricity respectively thanks to the wind. In Switzerland, this share is currently only 0.24% (2021), whereas the target of the Confederation's 2050 Strategy is almost 7%. According to a 2022 study commissioned by the Confederation, Switzerland could even produce 14% of its electricity from wind energy.

The canton of Vaud, for its part, is one of the regions of Switzerland (plateau and Jura) with the greatest wind energy potential. The overall objective of the canton is to produce between 12% and 25% of the cantonal electricity consumption. The development of this energy resource is therefore logically part of the priority objectives of the canton and will have to be carried out in line with other territorial interests, such as the landscape or biodiversity.

Wind energy is one of the solutions that will enable Switzerland to switch to almost exclusively renewable electricity production, thus contributing to the fight against global warming and to our energy independence. Moreover, wind energy is particularly well suited to complement other renewable energy sources, such as solar energy, hydropower and geothermal energy, to achieve the goal of a 100% renewable electricity supply in the future