Consider Building Management (comprehensive monitoring and analytics) and Building Automation Systems (Lighting and HVAC) integration to optimize your facility performance and maximize control of energy expenditures.  Automation of systems using a BMS can result in energy savings through effective use of systems only when required (automatic turning on / off of HVAC systems and lighting for example), while the detailed information provided by an EMS can assist facility managers to understand and optimize energy use. A combination of BMS and EMS is highly effective with the EMS informing the settings of the BMS to achieve best performance and energy savings.