Fujitsu Laboratories Ltd. have done a great job with this power strip, at least great for those of us who would care about solutions to avoid energy wastage as much as possible.

It sports 4 outlets each of which are equipped with a contactless power sensor with 1W of resolution that is capable of measuring electrical energy in real time up to 2,000 W. The measured data is then transmitted over a network through a transmitter connected to a USB port on the side of the power strip. Another noteworthy feature is that if you want, it is also possible to know how much energy is consumed in the absence of the user by combining the data with a scheduler.