Enterprise comprehensive energy efficiency management system is to provide company a complete set of solutions for energy management, power quality and energy safety monitoring. It includs energy sources (such as state grid, green energy like solar power or wind power, water, gas, fuel etc.), monitoring of the energy use, classification statistics of energy consumption and energy safety use monitoring. It can help enterprises to avoid blind area of energy consumption, improve the operation of distribution system and energy safety use, reduce the costs for the enterprise. Main function:1, real-time warning, find out the abnormal situation of power distribution system; (2) operation monitoring, make energy consumption process visible; (3) energy consumption data analysis; (4) power quality monitoring: power factor, harmonic distortion rate, voltage pass rate, imbalance degree monitoring etc.