A power generating system of the present invention includes: a package (70); a power generator (1); a combustible gas passage (23); a first device configured to operate by a first voltage using a DC power generated by the power generator (1); a second power supply circuit (13) configured to generate the DC power of the first voltage; a first connecting unit (8) arranged between the first device and the second power supply circuit (13); a control circuit (7) configured to control the first device using the DC power of the first voltage; and a first power supply circuit (11) configured to generate a power of a second voltage higher than the first voltage, and the package (70) is divided by a dividing wall (71) into a first space (72) in which the power generator (1), the combustible gas passage (23), the first device, the first connecting unit (8), and the control circuit (7) are arranged and a second space (73) in which the first power supply circuit (11) and the second power supply circuit (13) are arranged.