Currently, there are global efforts being made for energy saving. Lot of efforts are being done exploring the generation of alternative resources of energy – also called renewable energies which includes solar, nuclear, water and wind, to name but a few. Besides investigations of renewable energies, a global attempt is also being made to save energy consumption and reduce carbon emissions. A need to have a comprehensive Energy Management System could not have been felt more by both businesses and individuals. This Chapter describes features required for a complete system of energy management focusing on Electrical Energy. The system is designed making use of wireless sensor network & standard protocols. Chapter will address firstly the theoretical aspects of energy management followed by the detailed model for Automatic Meter Reading concept. We will focus on the features of such an Energy Management System & limits our scope to the detailing of Automatic Meter Reading concept and design.