During rapid modernization, the policy of technological upgrading of the coordinated operation of the energy supply chain has been tested over many years of practice, with limited potential for future development, and further emission reductions are facing greater technological and cost pressures. Market trading policies mainly include the carbon emissions trading mechanism and the guaranteed mechanism for renewable energy power consumption, and the above policies will be formally implemented in 2020, which will be the main direction of development in the future. After introducing the low-carbon policies, this paper will focus on the coal-power energy supply chain considering the carbon credit quota and renewable electricity consumption limitations and analyze the impacts of the relevant parameters on the coal-power energy supply chain returns under the above policies in both non-cooperative and cooperative game scenarios. Finally, a preferential price-based green power certificate trading mechanism is constructed to propose a cost-reducing trading proposal for power users to purchase green power certificates to fulfill the amount of renewable energy power consumption.