To improve power generation efficiency, prevent a reverse current from flowing in the case fuel cells are connected in parallel, and reduce the loss of electric power or prevent the loss from occurring.

This power generating system uses the fuel cell and is configured such that a plurality of the fuel cells 11, 21 are connected in parallel via capacitors 13, 23, and the fuel cells 11, 21 share the supply of generated electricity to an electric load 50. At output terminals of the fuel cells 11, 21, coils 12, 22, first switches 14, 24 to control electric currents which flow in the coils 12, 22, and reflux diodes 16, 26 to reflux the currents flowing in the coils 12, 22 are installed, second switches 15, 25 to selectively connect the output terminals of the fuel cells 11, 21 and the electric load 50 to the capacitors 13, 23 are installed, and furthermore, a control means CU to control the first switches 14, 24 and the second switches 15, 25 are installed.