• The wind energy depends on wind velocity. Wind velocities at different heights were expressed in terms of the corresponding available velocities at equal heights with and without reducer turbines. The results show that wind speed increases with reducer, starting with 1.35 times at the top of the reducer. The maximum increase is noticeable at about 300 slopes. Therefore it is constructed a typical wind mill about 10 feet height, 300 slope and 10 feet length. Wind energy shall serve as foundation stone and a driving force for the immediate application of a world energy system driven by renewable energies to supplement fossil and nuclear sources. In the Annual 11th World Wind Energy Conference 2012 "CommunityPower – Citizens’ Power" held in
