For vertical turbines based on the Savonius or Darrieus principle, a rotor height of 4 m results in a required diameter of 43 m. In concrete terms, this means a rotor diameter of 14.7 m for horizontal wind turbines. If weĪssume this speed and consider the 4 kW mentioned above as the averageĬonsumption as the desired power generation, we find that a wind turbine thatĬan completely cover this demand has to tap a wind area of 172 m 2. Measurements and not to attach too much importance to average values. Own site assessment, it is strongly recommended to carry out precise wind With moderate to medium wind and is only used for rough orientation. In the following, anĪverage wind speed of 4 m/s is assumed. Of a wind turbine are directly dependent on each other. The graph below, the rotor size, the prevalent wind speed and the power output Assuming that a wind turbine generates electricity continuously throughout the year, this corresponds to a required power of 4 kW. Size and power output of small wind turbinesĮstimation of what one can expect from a private wind turbine in terms ofĮnergy production and to what extent it covers one’s own electricity needs,Īccording to a study on the use of vertical axis small wind turbines in Bavaria, the annual power consumption of a typical German single-family home is about 3,500 kWh. But what can you really expect from a small private wind turbine in terms of the energy it generates and what do you need to consider when installing it at your own home? The idea of being able to generate electricity off-grid as a private person with a wind turbine in the garden of your own house is very attractive.
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