According to an aspect of the present invention, there is provided an information processing apparatus that is operable in a first operation state and a second operation state, the apparatus including: a history storage unit configured to accumulate: a power usage reduction that is calculated based on a power usage difference between the first operation state and the second operation state; and an acquisition time at which the power usage reduction is acquired; an adding-up unit configured to add up values of the power usage reduction for a given period thereby calculating a power usage reduction amount; and an image generation unit configured to generate an image indicating a difference between the power usage reduction amount and a target value therefor and to display the image on a display device.