Vertical: Wind turbines that rotate around an upright, vertical axis (like a rotating sign). They work with wind from any direction without needing to turn, are quieter, and are ideal for rooftops and residential areas.
Horizontal: The classic design that looks like a windmill (with the blades in front). It is the most efficient type, as it makes maximum use of the wind’s power, but it must always be oriented toward the direction of the wind.