Smaller wind turbines, often used for residential purposes or small commercial applications, feature blades that are shorter and lighter. These blades usually weigh between 1,500 pounds (680 kg) and 5,000 pounds (2,268 kg). A wind turbine blade is the part of a wind turbine that interacts with the wind, turning kinetic energy into mechanical energy, which is then converted into electricity. Two symmetric in shape airfoils were used to get the final optimized airfoil. The main objective is to optimize the. the case for small-size wind turbines. Blade Number and Efficiency: For small-scale turbines, adding more blades can improve efficiency at low wind speeds by.