Energy management is a key issue in the European and global economic landscape. BMS is a system of monitoring and control of electrical systems with dual objective: Safety and Energy Saving. The system presents in real time the status of the switches of an electrical panel promptly signaling fault conditions. Allows you to monitor energy consumption on single and three phase loads with high level of accuracy. Process maps functional and organizational energy expenditure company. It ‘a useful tool to support strategic decisions aimed at saving energy. The BMS integrates the communication model “Cisco Energy Wise”, based on the assumption that the data network is an intelligent system able to acquire, adapt and aggregate the information and present management systems domain energy.