The invention relates to a photovoltaic concentration submodule (1) for photovoltaic concentration modules, including solar energy concentrators which are used to capture solar radiation and which comprise Fresnel lenses (15) and secondary optical elements. The inventive submodule is formed by a laminar body (2) comprising a central section and two essentially-perpendicular lateral flanges, such as to define an essentially U-shaped element which is made from aluminium. According to the invention, fixing means are used to fix photovoltaic cells to the central section, which are supplied to each of the concentrators. The aforementioned laminar body (2) serves as a support structure for the concentrators and as a heat-dissipating element for the photovoltaic cells. Moreover, the Fresnel lenses are disposed on a front mount (3) which is joined with the laminar body (2), said lenses being disposed in a row.