Abstract: A radiation concentrating device, comprising a substantially parabolic mirror, which is adapted to reflect the energy radiation or electromagnetic radiation that reaches it so as to converge toward an active area of a receiving element arranged in front, the active area being interposed between the focal point of the mirror and the mirror itself, the mirror and the receiving element being fixed by way of coupling elements to a same base. The transverse dimension of the active area is smaller than the transverse dimension of the mirror arranged in front. The base is preset to support a plurality of parabolic mirrors and corresponding receiving elements, which are mutually connected by conductors.