Due to the requirements of national energy policy, more than 10,000 public and commercial buildings in China installed sub-meters in the last eight years. Energy audit and retro-commissioning were also performed on these buildings. EMS platform that can track and perform analysis on data collected from sub-meters and BAS is becoming essential for analyzing system operation, identifying system issues and faults , and uncovering energy cost-saving opportunities. This presentation introduces an advanced EMS platform used for automatic data collection and archiving, data calibration, energy benchmarking, equipment and system operation performance analysis, energy and operation fault alerting and measurement & verification.