The vertical axis turbine may include a frame rotatable about the central axis. In one variation at least two masts, each having a boom, are coupled to the frame and at least one sail is coupled to each mast and boom. In another variation, at least two blades are rotatably coupled to the frame and being substantially perpendicular to the frame. The frame may also include at least two retaining members being attached to the frame. Each retaining members defines an opening and corresponds to each mast or blade. A cord is coupled between the two generally opposing booms or blades. The cord extends within the opening of the corresponding retaining members, wherein the cord is configured to regulate the position of the at least one blade or sail. Alternatively, the vertical axis turbine may include a central hub. The cords from each boom or blade extend through each retaining member and then attach to the central hub.