A fuel cell power generation system that includes: a hydrogen generating apparatus which generates hydrogen; a fuel electrode, of which a portion is coupled to the hydrogen generating apparatus so as to receive the hydrogen and dissociate the hydrogen into hydrogen ions and electrons, and in which a fuel channel is formed that has one side open; a membrane, stacked over the fuel electrode such that the membrane covers the open side of the fuel channel; an air electrode, which is coupled to the membrane, and which receives the hydrogen ions from the fuel electrode through the membrane; and a pressure sensor, which is formed on the portion of the fuel electrode, and which measures a pressure inside the fuel channel and regulates a quantity of hydrogen supplied to the fuel electrode. With this system, the flow rate of hydrogen can be regulated in a simple manner.