A concept that offers smart grid energy monitoring system is XentiQ, an innovative creation of Wan Xuan Lim that suggest to incorporate a digital power usage meter every plug in your home, simply monitoring work for electricity consumption.
Either in the office or you home, XentiQ offers a smart real-time energy monitoring. Would be best if it could include an alarm inside the power meter for alerting user about over usage.
[ Source: iGreenSpot ; Wan Xuan Lim ]