Photovoltaic systems are particularly popular for generating renewable electricity for private households. However, it is also possible to produce and use one's own electricity with small wind turbines on one's own property. Especially business owners, for example from the real estate or agricultural sector, who have a high electricity consumption, but also private homeowners, resort to electricity generation via small wind turbines.
Small wind turbines in Germany have a size of about 10 to 30 meters and a rotor diameter of about 3.5 to 7 meters with a 6 kilowatt (kW) output. According to the definition of the Federal Immission Control Act (BImSchG), one speaks of a small wind turbine if you do not exceed a height of 50 meters and a power of 100 kW. If you decide to purchase a small wind turbine, you should first check whether and which building and approval guidelines are stipulated by the respective state building code. It must also be checked whether the wind conditions on site are sufficient to guarantee successful operation of the plant. The stronger the wind speed on site and the higher the location of the small wind turbine, the more profitable the electricity production.
About 1000 kilowatt hours of renewable electricity can be produced per kilowatt of installed capacity if the small wind turbine has a good inland location. On the coast, where stronger wind conditions can be expected, even more than 2000 kWh per kilowatt of installed capacity can be generated. Especially on sunless days in autumn and winter, the use of a small wind turbine makes sense. This serves as a good supplement to photovoltaic systems in the summer to provide sufficient electricity generation throughout the year. Feeding the electricity produced into the public grid is less than 9 cents per kilowatt hour and is not particularly economical. Therefore, the house or business should have a high energy consumption, so that the use of a small wind turbine is really worthwhile.
Source: energie-experten.org
© photodune.net
