The Berlin start-up Mowea is developing small-scale wind turbines that can be used in the city. A combination with a solar system is also possible.
Renewable energies are on the rise. According to the Federal Statistical Office, wind power was the most important source of electricity in Germany for the first time last year. At the moment, the focus is still on particularly large and – so criticize – ineffective wind turbines. The young Berlin company Mowea is taking a different approach and has developed small wind turbines that are specifically designed for use in urban areas.
The individual modules can therefore be put together like building blocks to create a wide variety of wind turbine shapes. Mowea is currently advertising three different models: Net, String and Champ. Due to their small size and the possible combinations, the company hopes to be popular with both private households and larger electricity consumers such as factories or office buildings. A single wind turbine only has an output of half a kilowatt, but the combination of four mini wind turbines can cover the electricity budget of a small family. Mowea plans to bring the wind turbines onto the market this year for a unit price of around 500 euros.
Wind power plant only requires low wind strengths
Electricity from wind power has been around for several decades. In order to capture more wind, traditional wind power plants have so far been built higher and higher and have larger rotors. But this not only leads to aesthetic aversion in the population, but according to a study it is also not particularly efficient (read more here). According to the company, the simple structure of Mowea’s mini wind turbines allows more cost-effective production.
In addition, according to their developer, the small wind turbines in the city, in contrast to large systems in the field, require comparatively little wind. Allegedly three meters per second are enough to start the system. Larger wind turbines usually require a significantly higher wind force. Here, speeds of at least ten meters per second are required to get the wheel running and to produce electricity effectively.
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