| 摘要 |
PROBLEM TO BE SOLVED: To let consumers individually choose an electrical supply company and power system properly and easily. SOLUTION: The power supply transaction system is provided with a power supply means for supplying to a consumer 1 power supplied by a plurality of power supply companies A and B having various power systems for billing energy charge, a data processing means 7 belonging to a power system selection service company providing selection information for the consumer 1 to select power system, a time-based power consumption amount measuring means 5 belonging to the consumer 1, a measured result transmission means for transmitting the measured result of the time-based power consumption amount measuring means 5 to the data processing means 7 belonging to the power system selection service company. The data processing means 7 belonging to the power system selection service company generates the power selecting condition data including the season- and time-based power consumption amount data based on the result from the time-based power consumption amount measured result so as to offer selection information for selecting power supply unit and power system advantageous to the consumer 1. |
