Abstract: A solar panel is provided including a solar energy collector, such as solar collectors or photovoltaic cells, the panel also including a top surface. The solar panel includes a one-piece buoyant structure on which a solar energy collector is mounted, the collector being built into a solar module arranged on the buoyant structure, in particular in a flat manner. The panel has, in a direction perpendicular to the top surface, a substantially constant thickness within at least one peripheral region of the panel. The present panel can be used in the field of sea-based solar power plants or solar power plants in any other aquatic environment.