PURPOSE: To easily check, even in the night, a module type power generation facility from the external side.

CONSTITUTION: Windows 21 to 33 for checking are provided at respective points of a module type power generation facility, caution plates 31a to 33a, on which the major check items (check corresponding points of object apparatus and check contents) are described in such a manner as can be read even at night, are also provided in the vicinity of these windows 31 to 33 and check is conducted for the corresponding points of the apparatus on the basis of the major check items of these caution plates 31a to 33. Moreover, alternatives are method of providing check points indicating lamps in the vicinity of the corresponding points of the major check items to check the check points illuminated by these lamps and a method of respectively displaying the corresponding points of the major check items with liquid crystal or with the display plate coated with the fluorescent paint and conducting the check based on this display plate.