The total capacity of 172 wind turbines in Hungary is 329.325 MW. Their yearly all electric power output is over 600 GWh. Hungary's total exploitable wind power potential is 532.8 PJ/year. The aim of research shown in this book is to work out those statistical methods which permit of the increase of efficiency of wind energy utilization. First the statistical structure of wind directions is shown: the characteristic and energetic prevailing wind directions, alteration of energetic parameters of the wind directions, connection between the change of wind directions and the potential wind...