A wind turbine comprising a support structure for supporting a rotatable, substantially vertical hub wherein at least one substantially horizontal support arm is connected to the hub. At least one wind trap is connected to each of the at least one support arm, and each of the at least one wind trap supports at least one petal that may move between an open position, wherein wind is not blocked by the at least one petal, and a closed position, wherein the at least one petal blocks the wind thereby causing the wind to move the at least one wind trap and rotate the hub.