Abstract: An electric-information measurement/acquisition system comprising a sensor unit, a measurement unit, and an acquisition unit. The sensor unit includes sensors for detecting properties such as the voltage, current, temperature, and moisture,. The measurement unit includes: an A/D conversion unit for performing A/D conversion of the properties thus obtained at a predetermined first cycle; a first computing unit for performing computation at the predetermined first cycle and a predetermined second cycle so as to obtain intermediate data including the accumulated values of the averages of the properties including power-consumption data; and a transmission/reception unit for transmitting the intermediate data according to a request from the acquisition unit at a predetermined third cycle. The acquisition unit performs computation processing and correction processing for the intermediate data obtained from the multiple measurement units, thereby obtaining the properties thereof in a final format.