Fuel cell and control unit in a housing

A generator section (7) and a control section (29) are arranged in a housing of a fuel cell. The generator section has an electromotive unit (52) which generates power based on a chemical reaction, a fuel tank (50) which contains a fuel, a fuel circulation passage through which the fuel is circulated between the electromotive unit and the fuel tank, and a radiator section (70) which cools the fuel circulation passage. The control section has a heat generating electronic component (28a) and controls the operation of the generator section. A part of the fuel circulation passage is connected thermally to the heat generating electronic component.