A thermoacoustic electric generator system comprising: a tube component that is configured by including an annular tube and a branched tube branched from the annular tube and communicating with the annular tube and, in which specified working gas is enclosed in both of the annular tube and the branched tube ; a thermoacoustic engine that includes: a stack incorporated in an inside of the annular tube in the tube component and having plural channels, each of which extends in a tube longitudinal direction; and a heat exchanger exchanging heat with the working gas such that a temperature gradient is generated between both ends of each of the plural channels in the stack , so as to cause thermoacoustic oscillation of the working gas; a turbine that includes: a turbine blade provided in an inside of the branched tube in the tube component and rotating by the thermoacoustic oscillation of the working gas in the thermoacoustic engine ; and a turbine rotational shaft configured to be coupled to the turbine blade , penetrate a tube wall of the branched tube , and extend from the inside to an outside thereof; characterized by a generator provided on the outside of the branched tube in the tube component , coupled to the turbine rotational shaft of the turbine , and converting rotational energy of the turbine blade to electric energy, and in that the branched tube includes a crank tube section that is bent in a crank shape, and the turbine rotational shaft of the turbine is configured to extend in the same direction as an axial direction of the branched tube while penetrating a tube wall of the crank tube section . a tube component that is configured by including an annular tube and a branched tube branched from the annular tube and communicating with the annular tube and, in which specified working gas is enclosed in both of the annular tube and the branched tube ; a thermoacoustic engine that includes: a stack incorporated in an inside of the annular tube in the tube component and having plural channels, each of which extends in a tube longitudinal direction; and a heat exchanger exchanging heat with the working gas such that a temperature gradient is generated between both ends of each of the plural channels in the stack , so as to cause thermoacoustic oscillation of the working gas; a turbine that includes: a turbine blade provided in an inside of the branched tube in the tube component and rotating by the thermoacoustic oscillation of the working gas in the thermoacoustic engine ; and a turbine rotational shaft configured to be coupled to the turbine blade , penetrate a tube wall of the branched tube , and extend from the inside to an outside thereof; characterized by a generator provided on the outside of the branched tube in the tube component , coupled to the turbine rotational shaft of the turbine , and converting rotational energy of the turbine blade to electric energy, and in that the branched tube includes a crank tube section that is bent in a crank shape, and the turbine rotational shaft of the turbine is configured to extend in the same direction as an axial direction of the branched tube while penetrating a tube wall of the crank tube section . <EOS>