Abstract: In order to achieve the goal of ’carbon peak and carbon neutrality’, the construction of a unified national power market system is accelerated. A two-stage market clearing model considering load participating in carbon trading is proposed for replacement of clean energy and carbon emission reduction of electricity industry. Firstly, an initial carbon quota allocation method for thermal power units based on Zero Sum Gains-Data Envelopment Analysis(ZSG-DEA) is introduced, and the electricity market clearing model considering carbon trading is established. Secondly, according to the market clearing results of the first stage, the new energy consumption of load is determined by the power flow tracing theory, and the Chinese Certified Emission Reduction(CCER) is calculated. On the basis of CCER carbon offset rules, the second stage of carbon emission trading is started, and the secondary electricity market with carbon emission constraints is cleared according to the carbon trading results. Finally, an example of the improved IEEE 30-bus system is analyzed to verify the effectiveness of the proposed market model. The results show that the proposed model is in favor of reducing the carbon emissions of thermal power units, increasing the marketization consumption ratio of new energy and lowering the average electricity price in the market. And it provides a scheme for large-scale marketization consumption of new energy.

Key words: carbon emission trading, carbon quota allocation, market mechanism, new energy, electricity market, spot market