Solar panel and rail with edge connectors

A solar panel assembly comprising an optional solar panel as glass and at least a pair of frames, and a rail, said solar panel assembly having:

• an upper surface;
• wherein an underside of each frame includes a rail coupling part with a rail coupling part groove or a rail coupling part tongue;
• wherein an upper side of the rail includes frame coupling parts, each frame coupling part having a frame coupling part tongue or a frame coupling part groove, wherein end faces of the frame coupling part tongues face each other or groove openings of the frame coupling part grooves face each other;
• wherein the rail coupling part tongue of each frame is configured to lock together with one of the frame coupling part grooves of the rail or the rail coupling part groove of each frame is configured to lock together with one of the frame coupling part tongues of the rail to couple a pair of the solar panels to said rail in a direction perpendicular to a plane of the coupled solar panels,
• wherein each said rail coupling part tongue of each of the frames and the frame coupling part grooves of the rail or each said rail coupling part groove of each of the frames and the frame coupling part tongues of the rail have respective upper and lower surfaces, the upper and lower surfaces of the rail coupling part groove of each frame forming a channel to receive the frame coupling part tongue of the rail or the upper and lower surfaces of each frame coupling part groove of the rail forming a channel to receive the rail coupling part tongue of the frame,
• wherein each rail coupling part groove of the frame has a locking element as a downwardly projecting protrusion located at an outer edge and adjacent the upper surface of the rail coupling part groove, and terminating at a distal upper side lip edge, or
• wherein each frame coupling part groove of the rail has a locking element as an upwardly projecting protrusion located at an outer edge and terminating at a distal lower side lip edge,
• each said locking element including cooperative contact surfaces arranged to be engaged when either the rail coupling part tongue and frame coupling part groove are coupled together or the frame coupling part tongue and rail coupling part groove are coupled together to prevent substantial separation of the coupled solar panel and the rail in a direction perpendicular to the side edges of the frames.