Vertical-axis wind turbines (VAWTs) are a type of wind energy system where the main rotor shaft is oriented vertically, allowing the blades to rotate around a vertical axis. Unlike traditional horizontal-axis turbines, VAWTs can capture wind from any direction without the need for orientation mechanisms, making them ideal for urban or turbulent environments.
They are valued for their compact design, quiet operation, and suitability for rooftop, small-scale, or densely built areas. VAWTs generally have lower startup speeds and require less maintenance due to fewer mechanical components at the top of the tower.