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在完全竞争的情况下,排污权交易市场是一种有效的污染控制手段。但是在寡头垄断市场中,排污权交易的效率会由于垄断效应而降低。本文证明,当产品市场是寡头垄断的情况下,由于排污权交易市场的价格接受行为,削减效率低的企业可以获得较多的排污权,使得它们在生产市场中更有竞争性,可能导致低产出率和高价格的市场均衡,并可能导致高成本的企业反而生成更多,最终使得行业的总产量减少。如果忽略寡头企业的边际生产成本的差异,指令控制对行业总产量基本不产生影响。
In the case of complete competition, the emission trading market is an effective means of pollution control. However, in oligopolistic markets, the efficiency of emissions trading decreases due to monopoly effects. This paper proves that when the product market is oligopolistic, due to the price acceptance behavior of emission trading market, enterprises with lower reduction efficiency can get more emission rights, making them more competitive in the production market, which may result in low Market equilibrium with high output rates and high prices may result in higher-cost firms generating more and eventually reducing the total output of the sector. If you ignore the differences in the marginal cost of production of oligopolies, command control basically has no effect on the total output of the industry.