Ascending energy demand and vanishing nonrenewable energyresources have increased the prominence of energy efficiency nowadays. In orderto accomplish an energy efficient future for the forthcoming generations ofhumanity, traditional devices possessing low efficiency should be altered withintelligent devices having high efficiency. Thanks to internet of things (IoT),conventional devices have been turned into intelligent devices which can beremotely accessed, monitored and controlled by utilizing ubiquitous sensormechanisms. In this study, enhancement of a low-cost intelligent device (iDev) istargeted to develop in order to compute and store electrical energy consumptioninto a database by an embedded card named as Arduino which has the capabilityof measuring voltage, current, frequency and power factor for improving energyefficiency in buildings. When a classic device is connected to the enhanced iDev,the device is converted to an intelligent device that is remotely controllable. As aconsequence, if a whole building is equipped with the proposed iDev, it isconsidered that a large amount of electrical energy will be saved for a better andlivable Earth.