In a management device, a state determination table in a first storage portion indicates correspondence relationships in which target achievement levels are respectively associated with combinations with division periods and ranges of amount of power. An action table in a second storage portion indicates correspondence relationships with operations for making an execution portion perform and the target achievement levels. A first extraction portion extracts, from the state determination table, a target achievement level corresponding to a combination with a division period including a date acquired by a date acquisition portion and a range of amount of power including the amount of consumed power acquired by a power acquisition portion. A second extraction portion extracts, from the action table, an operation corresponding to the target achievement level extracted by the first extraction portion. An execution control portion controls the execution portion to perform the operation extracted by the second extraction portion.