Abstract: As an important part of the integrated energy system, distributed energy plays a very positive role in the orderly promotion of the "Carbon peak and Carbon neutrality" goal. In this paper, a large commercial complex distributed energy system is taken as an example, through the analysis of cooling load, heating load and electricity load of users, as well as the comparison and selection of gas-fired power generation equipment, waste heat utilization equipment and peak shaving equipment, the installation configuration scheme suitable for the distributed energy system is finally formulated, which not only realizes the matching of energy supply on the source side, but also further reduces the carbon emissions of enterprises. Help enterprises to achieve the goal of energy saving and emission reduction.