A power supply system is provided. The power supply system includes a first controller for controlling charge and discharge of a first electric storage apparatus and a second controller for controlling charge and discharge of a second electric storage apparatus. The first controller generates first scheduling data indicating transition of electric power to be charged and discharged from the first electric storage apparatus during a first prediction period. The second controller generates second scheduling data indicating transition of electric power to be charged and discharged from the second electric storage apparatus during a second prediction period containing the first prediction period. Generation of the first scheduling data is performed based on the second scheduling data previously generated by the second controller.