In an information processing device, an operation executing unit executes a requested operation in one of a plurality of operating modes. A monitoring unit monitors an electric power consumed by the execution of the requested operation. Information related to the consumed electric power is stored in a memory unit. A setting unit defines a consumption period and an allowable consumed electric power within the consumption period. A control unit computes a consumed-electric-power log of the consumed electric power monitored at intervals of a predetermined time and a consumed-electric-power total log, and stores consumed-electric-power log related information in the memory unit. When an operation request is received within the consumption period, the control unit controls the execution of the requested operation based on the consumed-electric-power log related information and the allowable consumed electric power.