A control system includes a management unit configured to control a power supply device toward a target value for an output performance value of the power supply device that supplies power to a predetermined device, and an acquisition unit configured to acquire information related to a post-shutdown task scheduled to be executed after a shutdown condition of the predetermined device is satisfied, in which the management unit refers to the information acquired by the acquisition unit, and, when the post-shutdown task is scheduled to be executed, sets the target value to a second target value which is higher than a first target value set when the post-shutdown task is scheduled to be executed, before the shutdown condition is satisfied.