Power supply system and moving object

A power supply system includes: a first power supply circuit for supplying, to a first load device, DC power output from a first power generation device; a second power supply circuit for supplying, to a second load device, DC power output from a second power generation device; and a first connection circuit including a first connection device capable of connecting the positive side of the first power supply circuit and the positive side of the second power supply circuit, and a second connection device capable of connecting the negative side of the first power supply circuit and the negative side of the second power supply circuit. The first connection device and the second connection device are disposed on one end side and the other end side of the first connection circuit, respectively.