Abstract: A wind turbine is described comprising two counter-rotating rotors, each rotor comprising an axle (5) carrying a series of blades (1). The rotors are mounted between two opposing aerofoils (2). The aerofoils (2) and the rotors together being mounted on a turntable (3). The turntable (3) is in turn mounted on a static housing (4) that contains gearing (6) and drive (8) mechanisms that are driven by the action of wind on the rotors and further drive a generator that generates electrical power.