POWER SUPPLY SYSTEM, POWER SUPPLY APPARATUS, AND POWER SUPPLY METHOD

The power supply system includes a plurality of power supply apparatuses configured to transmit power to vehicles by non-contact. The plurality of power supply apparatuses includes a first power supply apparatus installed in a first region positioned on a road directly connected to an exit of an area in which operation of internal combustion engines is prohibited or restricted and where an amount of traffic of vehicles at least temporarily becomes equal to or greater than a predetermined threshold value, and a second power supply apparatus installed in a second region different from the first region. An amount of power supplied from the first power supply apparatus to a vehicle is made greater than an amount of power supplied from the second power supply apparatus to a vehicle.