PURPOSE: To reduce a required space for the whole facility and a construction cost, improve the operation ratio of peripheral devices, and set and change an output easily.

CONSTITUTION: A power generation unit including a fuel cell is taken for a basic output unit, a plural power generation units 1A-1C are disposed in parallel corresponding to a required output, and a plural peripheral devices 2-7 are provided around the power generation units 1A-1C for composing a fuel cell power generation facility, where at least one sort the peripheral devices 5-7 of one sort among the peripheral devices 2-7 are provided for common peripheral devices to a plural power generation units.