Fuel cell power generation system for providing hot water to a housing

An operation method of a fuel cell power generation system including plural fuel cells executing power generating operations by use of oxidants and fuel, plural hot water storage tanks in which heat energies generated upon the power generating operations of the fuel cells is stored as hot water, a power supplying portion supplying electric energies generated by the fuel cells to plural electric energy consuming portions and a control portion controlling the power generating operations executed by the fuel cells, the method comprising:

• calculating a standard generated power output Wa per one fuel cell by dividing Wload, which is a total loading dose applied to all the fuel cells, by N, which is a total number of the fuel cells that are operated to generate power;
• correcting the standard generated power output Wa of the fuel cells that are operated to generate power on a basis of a heat energy storage capacity of each of the hot water storage tanks corresponding to the fuel cells that are operated to generate power;
• and
• controlling each of the fuel cells that are operated to generate power on a basis of the corresponding corrected Wa.