INFORMATION PROVISION METHOD, INFORMATION MANAGEMENT SYSTEM, AND INFORMATION-TERMINAL DEVICE

摘要

This information management server (2) is provided with: a communication unit (101) via which information indicating electricity usage amounts corresponding respectively to a plurality of user IDs is inputted over a network in association with the respective user IDs; an estimated-usage-duration computation unit (107) that calculates the difference between a first cumulative value and a second cumulative value, said first cumulative value indicating the cumulative electricity usage corresponding to one user ID over a prescribed period and said second cumulative value indicating the cumulative electricity usage corresponding to another user ID over the same period, and converts said difference to a first converted value indicating a usage duration for a first electrical home appliance among a plurality of electrical home appliances associated with the one user ID; a display-data generation unit (108) that converts the abovementioned difference to a first electricity fee value indicating an electricity fee and generates display data indicating that said first electricity fee value corresponds to the aforementioned first converted value; and a communication unit (101) that transmits said display data to a user terminal (4) corresponding to the one user ID.