Energy-intensive enterprises (EIEs) are important industrial loads

which have very good adjustment capability. Integrating EIEs into power system dispatch can not only improve the economic efficiency of the entire system

but also reduce the EIEs’ electricity costs under certain mechanisms. The related issues of integrating EIEs into power system dispatch are analyzed

and the models are developed to describe the EIEs’ operational and behavioral characteristics. Then the models are embedded into a security-constrained unit commitment model. On this basis

the three different dispatch modes

i.e.

centralized coordinative dispatch

decomposed coordinative dispatch

and single-step coordinative dispatch

are proposed. Finally

the necessity of the coordinated dispatch is demonstrated

and the different coordination modes are compared via cases

while the benefits of coordinative dispatch are especially shown in helping accommodate large-scale renewable energy generation. This work is supported by National Key Technologies R&D Program （No. 2015BAA01B04） and the Foundation for Innovative Research Groups of the National Natural Science Foundation of China （No. 51321005）.