In addition, in this second embodiment, the demand control unit 220 also includes the control history recording unit 225 that records {HEAD ~ an operation history} of {TAIL ~ the air conditioners} controlled by the control unit 223 
In addition , in this second embodiment , the demand control unit 220 also includes the control history recording unit 225 that records { HEAD ~ an operation history } of { TAIL ~ the air conditioners } controlled by the control unit 223
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH