Smart Grid defined.

There is a lot of discussion lately regarding Smart Grid technologies. Here is a basic definition: a smart grid is simply overlaying the traditional electrical power grid with a communications network and effectively using the data gathered at all points of the grid so as to optimize its operation. This allows, for example; real time transmission of energy readings to utility companies without the need for manual meter readings. This can be extended in a myriad ways, such as changing power tariffs dynamically by sending data from the utility to the customer during periods of peak usage to encourage reduced consumption.