Abstract: An assembly typically comprising solar panel modules is disclosed, which is mounted on a surface exposed to wind, and has a panel mounted at an angle to said surface, and means defining a concave surface extending from the top edge of said panel to the surface on which it is mounted, whereby impingement of wind on said concave surface reduces the wind-induced uplift applied to the assembly. This arrangement reduces the amount of ballast required to prevent the assembly from blowing away.