This thesis covers the subject of wind power stations. The terms wind, wind energy and wind power station are elaborated. After the definition of the term wind rose its construction is also explicated. This thesis includes a description of wind power stations, their classification and their advantages and shortcomings as well. In addition, all wind power stations in Croatia are listed, as well as their growth and development Special attention was given to the designing of wind power stations, taking into consideration the inception of the project, or rather, the location choice based on technical, economical, and ecological restrictions. This is followed by a more detailed location inspection. The wind velocity is measured by an anemometer, and to avoid deviations in measurements it is necessary to measure velocities for a period of at least 3 years. Based on wind velocity and direction measurements taken at the weather station Gradište, and taken from the Croatian Meteorological and Hydrological Service, a wind turbine was selected for the aforementioned location. Along with the data on electrical energy consumption of a local 25 company, an estimate was drawn up for the selection of a wind turbine to satisfy all the criteria demanded by the client (local company), such as economic and technological effectiveness. By comparing a pair of wind turbines, manufactured by Enercon and EWT it was concluded that the needs of the client would be satisfied by a wind turbine of 500kW. Considering all data collected by measurements and analysis, it was demonstrated that there is no reason to bypass wind power station construction in Eastern Slavonija.