POWER CONSUMPTION MODE GUIDING DEVICE AND SYSTEM

A power consumption mode guiding device (30) is provided in a local system (10) in which the frequency of power on an AC line (11), to which a power consumption device (14) and a power storage device (12) are connected, is controlled so as to be at a target frequency determined according to the state of charge of the power storage device. The power consumption mode guiding device (30) includes a frequency detection unit (31) that detects the actual frequency of power on the AC line (11), an information storage unit (32) in which pieces of guidance information for guiding the mode of use of the power consumption device (14) by a power consumer (D) to a prescribed mode are stored in advance in association with pieces of frequency information obtained from detection results from the frequency detection unit (31), and a guidance information output unit (34) that reads out, from the information storage unit (32), the piece of guidance information that is associated with the piece of frequency information obtained from the detection result from the frequency detection unit (31), and outputs the piece of guidance information to the power consumer (D).