Abstract: In order to develop the benchmarking management system for energy efficiency indicators，and improve the energy efficiency indicator management level for domestic gas turbine units，a three-level energy efficiency indicator benchmarking system was established based on the benchmarking experiences in traditional coal-fired units and characteristics of gas turbine units. Data statistical analysis，mechanism analysis，simulation calculation and other methods were used to establish the calculation model for the correction coefficients of power supply gas consumption affected by various boundary factors. According to the calculation model，a plant-level energy efficiency indicator benchmarking management system was established on a digital integrated platform of an E-level gas power generation enterprise，which achieved online benchmarking and analysis of energy efficiency indicators. This system makes it easy for operators to find the energy consumption gap from horizontal and vertical dimensions，and make diagnostic analysis on the location and causes of energy efficiency deviations，which provides guidance for unit operation optimization adjustment.

Key words: gas turbine unit, energy efficiency indicators, benchmarking management, boundary factors, correction coefficients, diagnostic analysis