Electric power has been supplied by an electric power company to every building or facility wherever needed. "Internet" is often used as an analogy of Smart Grid since various information generators are connected to the internet. In this context, the electric power supply network has been used as "down load" only while Smart Grid will enable us to download and upload of the electricity for multiple directions as the information traffic flows on the internet.
An important difference from Internet, however, Smart Grid has to assure stable and continuous power supply without no delay. No "Best Effort" is allowed on Smart Grid.
Smart Grid sounds pretty smart and beautiful as written and pronounce. However a huge amount of new technologies and efforts for standardization will be required to build it on this planet. A small piece of information released by National Institute of Advanced Industrial Science and Technology (AIST) has driven me to think of the new vision of power electric distribution network.