Charging management method, recording medium, and charging management system

A charging management method comprising:

• obtaining location information on a location of an electrified vehicle and battery information on a remaining capacity of a storage battery mounted on the electrified vehicle, the obtaining being first obtaining;
• displaying a user interface for a user of the electrified vehicle to input a proportion of renewable energy and non-renewable energy used for charging the storage battery, displaying of the user interface being first displaying;
• obtaining the proportion input into the user interface, the obtaining of the proportion being second obtaining;
• determining a recommended charging facility recommendable for the user from among a plurality of charging facilities including first power sources derived from the renewable energy and second power sources derived from the non-renewable energy, based on the location information on the location of the electrified vehicle and the battery information obtained in the first obtaining and the proportion obtained in the second obtaining;
• displaying, on a display, location information on a location of the recommended charging facility determined, the displaying of the location information on the location of the recommended charging facility determined being second displaying;
• predicting a charging demand at each of the plurality of charging facilities, based on the battery information obtained in the first obtaining and the proportion obtained in the second obtaining;
• and
• securing the charging power source for each of the plurality of charging facilities, based on the charging demand predicted in the predicting.