Currently, as we know, humanity is concerned about the problem of energy depletion. Non-renewable resources are running out, besides Most of the sources of this energy are accompanied by pollution and are already poses a danger to humans themselves, as well as to the environment. That's why the problem is becoming global, humanity is faced with new tasks and requirements. With the deterioration of environmental conditions and growing demand for energy, new, more environmentally friendly and cheap energy sources. It's wise to ask for help specifically to nature - to its wind, water, sun. This book provides a comprehensive review of research work on the design and development of small wind turbine blades, including the addition of aerodynamic elements. The characteristics and parametric analysis of rectangular blade profiles are presented in detail. The presented three-dimensional study confirms the significant influence of turbulent flows on the operation of a wind generator. The results obtained can be used to optimize the design of blades and improve the energy production efficiency of wind generators.