To provide a power supply system in a station by which electric power is generated by using wind power in a platform so as to supply the power to a station.

In a platform 12 which tends to be exposed to strong wind, the wind on the platform 12 can be weakened by a plurality of signboards 20. The wind hitting the signboards 20 is effectively guided to a wind power generator 30 by tilting surfaces 2002, 2004 to rotate a propeller. Wind passing through the upper area and lower area of the signboard 20 also rotates the propeller of the wind power generator 30. By doing so, electric energy is generated by the wind power generator 30. The electric energy is supplied to an illuminator 44 for a signboard, an illuminator 46 for a station, a ticket issuing machine 48 or the like, or supplied to a storage battery 60 to be accumulated. In the propeller type wind power generator 30, a fine view on a rotation trajectory of the propeller can be secured. Therefore, an opened atmosphere can be preserved.