NOVELTY - A solar roof tile (1) comprises a roof tile (2), a solar panel (3), a deepened part (4), and at least a set of side gutters (13) running at least from headlap end to downstream end of solar panel, where side gutters fluidly coupled to fluid channel that exits at downstream end of roof tile. The solar roof tile has an upstream end which in use is positioned closest to a ridge of a roof and a downstream end which in use is positioned closest to eave of a roof, and having at its upstream end a headlap part (7) that in use is overlapped by a lower part of similar solar roof tile.    USE - As solar roof tile, for a roof sloped roof of regular overlapping, similar solar roof tiles (claimed).    ADVANTAGE - The solar roof tile is durable and weathering resistant, and is leak tight during its (long) period of outdoor use and exposure to the elements.    DETAILED DESCRIPTION - A solar roof tile (1) for a roof sloped roof of regular overlapping, similar solar roof tiles, comprises a roof tile (2), a solar panel (3), a deepened part (4) in roof tile in which solar panel is attached, and at least a set of side gutters (13) between solar panel and roof tile and running at least from the headlap end to the downstream end of the solar panel. The solar roof tile has an upstream end which in use is positioned closest to a ridge of a roof and a downstream end which in use is positioned closest to the eave of a roof, and having at its upstream end a headlap part (7) that in use is overlapped by a lower part of a similar solar roof tile. The side gutters fluidly coupled to at least one fluid channel (19) that exits at the downstream end of the roof tile. The solar roof tile further comprises a lower gutter; and inner gutter. The fluid channel comprises at least one hole in lower gutter and/or in the downstream ends of side gutters. The roof tile is made from a composite material comprising a polymer material and inorganic filler. INDEPENDENT CLAIMS are included for the following:    (1) a solar roof system comprising several solar roof tiles, where downstream ends of solar roof tiles overlap the headlap of downstream solar roof tiles, and at least one fluid channel of upstream solar roof tile exits at least at the headlap of downstream solar roof tiles; and    (2) a roof tile and solar panel having features, for the solar roof tile.    DESCRIPTION OF DRAWING(S) - The figure shows a 3D front view of the solar roof tile.    Solar roof tile (1)    Roof tile (2)    Solar panel (3)    Deepened part (4)    Headlap part (7)    Side gutters (13)    Fluid channel (19)