Wind turbines are devices that convert the kinetic energy of wind into mechanical energy, which is then transformed into electricity through a generator. They consist of blades connected to a rotor, which spins when wind flows over them, creating lift and rotation. Wind turbines are categorized into **horizontal-axis** and **vertical-axis** types, with horizontal-axis turbines being the most common. Widely used in renewable energy production, wind turbines are a key component of sustainable energy systems, providing a clean, efficient, and eco-friendly alternative to fossil fuels.