present invention will be described 0024 fig1 illustrates the configuration of an in store equipment monitoring system the in store equipment monitoring system comprises stores 1 such as a plurality of convenience stores and a monitoring center 2 for providing power saving advice information to each of the stores 1 a controller 10 for synthetically monitoring the operating state of each equipment in the store 1 and measured values by various types of measuring devices as well as controlling each equipment is installed in the store 1 a monitoring personal computer a monitoring pc 20 is installed in the monitoring center 2 the controller 10 in each of the stores 1 is networked to each equipment in the store 1 further the controller 10 in the store 1 is connected to the monitoring pc 20 in the monitoring center 2 through a public line an analog telephone line an isdn integrated services digital network etc 3 as equipment in the store there are provided in this example a solar battery 31 illuminating equipment 32 air conditioning equipment an air conditioner 33 freezing equipment including a freezing showcase a compressor etc 34 refrigerating equipment a refrigerator 35 a garbage disposer 36 and a store outlet inlet door an automatic door 37 the equipment.