As you can see it is a glowing power cord. It is a design approach from Energy Design Studio based in Eskilstuna, Sweden. The glow of the cord is not just a simple show off. It is a representation of the energy that passes through it. The more is the energy expended, the more are the glow and pulse. It acts as an interactive medium for consumers to understand the amount of energy being consumed.
Called the Power Aware Cord, this helpful tool from Energy Design shows how such awesome creations can compel users to change their habits and save energy.
[source : tii.se]