In the case where a user changes a set state of apparatuses, an apparatus
operation control portion repressively controls the apparatuses, in spite
of an instruction of a control signal according to that change, so that
an increasing amount of power consumption of the apparatuses obtained
from an apparatus power consumption measuring portion will not exceed an
increasing amount of the generating capacity of a generator obtained from
a generating capacity measuring portion so as to gradually bring it
closer to a target set state set up by the user.