The wind power turbines, with horizontal or vertical axis types, are technical equipment that convert wind kinetic energy to mechanical energy used to generate electricity. The applications range from residential appliance battery charge using small wind power turbines to commercial electricity production using large wind power turbine system. Wind power turbines are developed not only to utilize the green wind energy for different energy enterprises but also to protect environment from air pollution. Computer-aided aerodynamic modeling and analysis can be applied to define the height of wind power turbine system, determine turbine blade geometry, specify turbine control system, and choose the number of turbine blades. The major turbine components include rotor with blades installed to change wind kinetic energy to slowly rotated mechanical energy, electrical generator with drive gearbox and electronics controller to change from slow-inlet shaft rotation to high-outlet shaft rotation for electricity generation, and all structural components to support wind power turbine system.