Wind power occupies the same areas as large-scale hydropower projects and much of the area occupation is due to the safety zones around the turbines. The safety zone is set by the authorities as 500 m in all directions because of the risk for the windmill itself or the wings to fall down or the risk of ice-falls from the blades (Holter et al., 2010). There is also a certain distance between the wind mills to avoid aerodynamic disturbance.