An electric energy transmission tether for an airborne wind power station comprises an elastic core, a first layer of one or more electric conductors helically wound around the elastic core, an electric insulation layer surrounding the first layer of electric conductors, a second layer of one or more electric conductors helically wound around the electric insulation layer, and a load bearing layer surrounding the second layer of electric conductors, for absorbing tensile forces and radial pressure forces acting on the tether.