Abstract: A solar panel comprising a sheet of flexible solar material (42) adhered to a support panel (10, 40) preferably formed of plastic. The support panel comprising a support layer and supports (11) formed at opposite edges of the support layer and protruding from a first side of the support layer. Holes (108) are drilled in the rails to attach the panel to a roof. The holes are preferably drilled at a level below the solar material. The panel may have through holes (105) to allow a cable (107) for the solar material to be tied to the panel.

Abstract: A roof panel comprising a rigid sheet (1) of material for forming a structural roof. The sheet is formed with a plurality of ridges (2), and a flexible solar material (6) attached along at least one of the ridges. The maximum height of at least one ridge (2) above the lowermost plane of the sheet is greater than 50 cm. A method of forming the roof panel comprises forming through holes (11) in the metal sheet, adhering a flexible solar material (6) along at least one of the ridges, and miming electrical connections (7) to the solar panel through the holes to the underside of the ridges (2).