Electric power conditioning device and method for conditioning electric power

An electric power conditioning device which is connected to an apparatus and an electric storage device installed in a house, comprising:

• an electric power receiving section;
• a communication section;
• and
• an operation section,
• wherein
• the electric power receiving section is connected to a commercial power supply to acquire an electric power consumption amount of the commercial power supply,
• the communication section receives information from the apparatus that the apparatus is about to be activated,
• the operation section calculates a first integrated value from an electric power consumption amount of the commercial power supply and an amount of electric power that is generated by activating the apparatus, and
• the communication section transmits to the apparatus a use permission signal for permitting the use of the apparatus when the first integrated value is not larger than a predetermined value, and the communication section transmits to the electric storage device a supply electric power amount inquiry signal for inquiring information regarding an amount of electric power suppliable by the electric storage device when the first integrated value is larger than a predetermined value.