Creating low-cost energy-management systems for homes using non-intrusive energy monitoring devices

This paper demonstrates how non-intrusive energy monitoring systems can be used to create powerful low-cost energy-management systems for use in homes. The paper describes the basic operation of non-intrusive devices, and it places particular emphasis on their ability to detect equipment degradation using only aggregate current measurements. The method used for detection of loads is described in detail. Also several field tested diagnostics that were developed to detect equipment degradations are presented.