Abstract: A power supply switching device (20) according to the present disclosure is used in supplying power to chargers (30) installed in the parking lot of a housing complex. The power supply switching device (20) includes switches (21) and a controller (22). The switches (21) switch the power supply on and off to each group among groups into which the chargers (30) are divided. The controller (22) controls the switches (21). The controller (22) controls the switching on and off of the switches (21) so that only one switch (21) among the switches (21) is on, or all of the switches (21) are off.