Abstract: The invention relates to a device for generating electrical energy by conversion of calorific energy into electrical energy, comprising: a first duct for a hot fluid (5), the hot fluid having a temperature T1; a second duct for a cold fluid (6), the temperature of which is lower than the temperature T1 of the hot fluid; and a thermoelectrical element (10, 10?), having at least two faces, arranged to generate an electric current between its faces when they are at different temperatures, the faces of the thermoelectrical element (10, 10?) being linked respectively to the ducts for fluids of different temperatures (5, 6) via thermal conduction means (15, 16).