To inexpensively estimate a power consumption for each type of electric power system in a facility.
A power monitoring system 10 is constituted by using a following power monitoring system 11. The consumption power of a PAC air conditioner 20 is estimated using a current value received by an air conditioning information reception part 71 from a communication adaptor 15 in an air-conditioning power estimation part 75. The consumption power for the number of lighted lamps is estimated using on/off information for each of lighting fixtures 42a to 42n received by a lighting information reception part 73 from a lighting control system 40 in an illumination power estimation part 76. A consent consumption power is estimated using on/off information of each of PCs 51a to 51n received by the PC information reception part 74 from a PC information acquisition system 50 in a consent power estimation part 78. A consumption power ratio of each electric power system is acquired from the whole estimation consumption power in an electric power ratio calculation part 79. A measured power consumption of the whole building (facility) of an electric meter 12 is prorated in accordance with a consumption power ratio so as to acquire the consumption power of each electric power system in a power conversion part 80.
KIKUCHI HIRONARI
MIYAMOTO TETSUO
Etsuo Tada