 The E-70 turbines have rotor diameters of 71 m, so the swept area is 3,959 m².The nacelle, in the hub height of 64 m, is assessable through a ladder within the tower, which is 4.2 m in diameter at the base and 2.9 m at top.The nacelle itself has a diameter of 5m the height of a two-storey building.