| With the continuous highlighting of global environmental issues,all countries in the world have adopted corresponding environmental protection policies in an attempt to maintain a sustainable production and living environment.In the face of the status quo of green economy,energy conservation and emission reduction and sustainable development,and in order to achieve the goal of the Copenhagen conference that the greenhouse gas emissions per unit of GDP will be 40% to 50% lower in 2020 than in 2005,it is imperative to optimize the energy and electric power structure.As a new renewable energy support policy,the renewable energy quota system and the accompanying green transaction certificate have received extensive attention from countries around the world.The establishment of a green certificate trading market is the most important role of the renewable energy quota system.Then,how will the establishment of a green certificate transaction market under the renewable energy quota system affect the strategic choices of fossil energy power generation companies and renewable energy power generation companies in the Chinese power system? What kind of promotion will be given to the energy saving and emission reduction targets in the power industry? Is the main issue discussed in this paper.This paper first establishes a market equilibrium model for renewable energy power generation companies that choose to participate in the green certificate transaction and not participate in the green certificate transaction strategy.Then use the MATLAB software to simulate the built equilibrium model to compare two types of analysis.Under the strategy,the proportion of different renewable energy quotas and the delay in the issuance of different subsidy funds will have an impact on the equilibrium output of renewable energy and fossil energy power generation enterprises,the total supply of electricity in the electricity market,the on-grid electricity price,and the earnings of power generation companies.The analysis shows that:(1)Although two different strategies can promote the development of renewable energy,the strategy of participating in the green certificate transaction can not only promote the development of renewable energy,but also help renewable energy companies increase their technological level.(2)With the increase in the number of years of delayed payment of subsidized funds,the amount of electricity generated by renewable energy power generation enterprises and the total supply of electricity in the electricity market are continuously decreasing.At this time,renewable energy power generation enterprises are required to change their development ideas of “waiting for,relying on,and demanding”,with the help of Green certificate trading system to enhance their weight in the power market competition and the right to speak.(3)Taking into account that the total power supply of the electricity market and total corporate income are not declining due to the formulation of the quota ratio,the optimal interval for the government to establish the proportion of renewable energy quotas should be(0.0947,0.3896].(4)In this interval,when choosing to participate in the green certificate trading strategy,as the proportion of quotas continues to increase,the amount of electricity generated by renewable energy power generation companies,the total power supply market,green certificate prices,and the number of green certificate transactions will continue to increase.The generation of fossil-energy power generation companies,the on-grid electricity prices in the electricity market,and the profits of fossil-fired power generation companies will continue to decrease,while the revenue and total revenue of renewable energy power generation companies will continue to increase.It shows that adopting the strategy of participating in the green certificate transaction can stimulate the enthusiasm of renewable energy without compromising the total revenue of the entire company,and it can be described as "two birds with one stone". |
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