There is provided a power consumption management device including a power measurement unit configured to measure power consumption of an electrical device, an environmental factor measurement unit configured to measure a factor of an environment in which the electrical device is used, a storage unit configured to store a predicted value related to the power consumption in which a value of the factor of the environment is designated as a parameter, and a calculation/control unit. The calculation/control unit obtains the predicted value related to the power consumption stored in the storage unit based on the value of the factor of the environment measured by the environmental factor measurement unit and compares the obtained predicted value related to the power consumption to an actual measurement value related to the power consumption obtained based on a power consumption value measured by the power measurement unit.