Support plate for integrating photovoltaic panels of various dimensions

Support plate (10) suitable for attaching and integrating at least one photovoltaic panel (12) on a roof of a building, said support plate (10) being delimited longitudinally by a downstream end (18) and an upstream end (19) forming an upstream cover portion (20), in a direction of flow of run-off water, and transversely by a first lateral edge (14) and a second lateral edge (16) that are each adapted to be assembled with a complementary edge of an adjacent support plate, characterized in that said support plate (10) comprises first (30) and second (32) bearing surfaces, arranged on either side of a longitudinal median axis (A) of the support plate (10), these first (30) and second (32) bearing surfaces being provided to support a photovoltaic panel, extending longitudinally from the downstream end (18) of the support plate (10) up to the cover portion (20), and being at least as high, or flush, with respect to the first lateral edge (14) and to the second lateral edge (16), so that the support plate (10) permits a free arrangement of all or part of at least one photovoltaic panel on the support plate (10).