An outlet device (100) used in the power consumption measurement system of the invention comprises: a feeding unit (101) to which a load (50) in a consumer system is connected and which feeds electricity to the connected load; a sensor circuit (110) for detecting a current amount flowing from the feeding unit (101) to the load (50); and a power consumption amount measuring unit (121) for measuring the power amount consumed by the load (50) on the basis of the current amount detected by the sensor circuit (110).
