Whether the blades rotate clockwise or counterclockwise is irrelevant for the HAWT, but not so for the VAWT. If you are north of the equator, the VAWT should rotate counter clockwise, and then, if you are south of the equator the blades be rotate thus clockwise. While if you reside at the equator......not sure...in this case I would flush some money down the drain, and depending which way the water rotated, THAT'S the direction the VAWT should go too!