A lighting device includes a support structure, a light source connected to the support structure, and an attachment bracket connected to the support structure. The lighting device further includes a support bracket moveably connected to the attachment bracket, wherein the support bracket has an arched shape, and a solar panel attached to the support bracket. The solar panel with respect to the solar radiation source is altered as a function of the moveable connection of the support bracket to the attachment bracket and the arched shape of the support bracket.