A device for the production of energy from biomass, includes: a first train of shafts to which are connected a compressor and a first turbine, a first exchanger that ensures heat exchanges between a so-called working fluid that was first compressed by the compressor and expanded into the first turbine, and hot gases that are obtained from the combustion of the biomass, a second train of shafts to which are connected a second turbine and elements for converting kinetic energy into another energy, a second exchanger that ensures heat exchanges between a working fluid that supplies the second turbine, and hot gases that are obtained from the combustion of the biomass, wherein the working fluid that is used in the second turbine is the working fluid that exits from the compressor, without passing through the first turbine.
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