A steam generation apparatus 1 including a high-temperature pipe 10 disposed extending horizontally and through which a high-temperature fluid passes; low-temperature pipes 20 disposed on both sides of the high-temperature pipe 10 in a horizontal direction and through which a low-temperature fluid having a temperature lower than that of the high-temperature fluid passes; and a thermoelectric module 30 interposed between the high-temperature pipe 10 and each of the low-temperature pipes 20 for generating electrical power using a temperature difference between the high-temperature pipe 10 and the low-temperature pipes 20, the low-temperature pipes 20 being configured such that the supplied low-temperature fluid in a liquid form is turned into steam due to heat exchange with the high-temperature fluid and is discharged from an upper portion of the low-temperature pipes 20.