PROBLEM TO BE SOLVED: To provide a technique capable of highly accurately estimating power consumption of an electric device when the power consumption cannot be measured.;SOLUTION: An electric power acquisition unit 110 acquires a result of measuring electric power supplied from an external power source to an information device 30. An operation state acquisition unit 111 acquires an operation state of the information device 30 from an awareness server 70. An unmeasurable operation period specification unit 112 specifies an unmeasurable operation period in which the information device 30 operates in a period in which the power consumption of the information device 30 is not measured. An electric power storage state estimation unit 113 estimates an electric power storage state of a battery in the information device 30 before and after the period in which the power consumption of the information device 30 is not measured. A power consumption estimation unit 114 estimates power consumption of the information device 30 during the period in which the power consumption of the information device 30 is not measured, on the basis of the unmeasurable operation period and the electric power storage state of the battery.;COPYRIGHT: (C)2012,JPO&INPIT
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