Power generation plant apparatus (1) for storing and releasing the thermal energy for the can to accommodate the converging solar radiation, flowable granules, modular beds, thus coupling the base to the use of the heat exchanger, and this base to the storage stage and the discharge activation step is independent. Operating thermal separation of the gas from the fluid flow, the selection of the bed of fluidized zone, additional heat input and thermal change of the rate of delivery of the fuel gas, this allows the adjustment of thermal power generation with extremely flexible. Device as described above mainly includes: the receiving surface for solar radiation (20) at least partially, flowable, at least one of the bed (3, 30) of a particle disposed in a; Supply means for supplying a gas flow for fluidization of the particles (14, 142, 21); And the flow from the available bed of particles (3, 30) or is arranged in proximity to the bed in the use comprises the heat exchange element 4 for the fluid motion flow, in the later stages of heat energy received from the solar radiation to store and to release the heat exchange device wherein the thermal energy 4 is stored in the discharge phase, the flow gas are arranged as a whole selectively bed (3, 30) of the particles to move, and the whole due to the arrangement, the heat storage phase and the heat release step is activated independently.