碳税政策对市场进入者低碳技术策略选择的影响分析

An Analysis of the Impact of the Carbon Tax Policy on the Low-carbon Technology Strategy Choice for the Market Entrant

考虑潜在制造商的市场进入成本,采用两阶段分析法研究了碳税对市场进入制造商技术策略选择的影响,以及政府社会福利最大的碳税政策制定问题。第一阶段,政府和制造商stackelberg博弈制定碳税政策标准。第二阶段,在位制造商和市场进入制造商Cournot博弈决策技术选择。研究发现:①如果在位制造商采用普通技术,增加碳税有利于制造商采用减排效率较高的低碳技术进入市场;②如果在位制造商采用低碳技术,增加碳税不利于制造商进入市场;③市场进入成本较高情形下,碳税能够引导在位制造商采用低碳技术;市场进入成本较低情形下,当市场需求较大时碳税能够引导制造商都选择低碳技术;市场需求较小时,碳税政策部分或完全失效。

Considering the market entry cost of potential manufacturer,the impact of carbon tax on the technology strategy choice of manufacturer and the optimal carbon tax policy of the government were studied.It is found:1.If the incumbent manufacturer adopts common technology,the stringent carbon tax can be benefit for entrant into the market,who adopts the low-carbon technology with carbon emission decreasing efficiently;otherwise the stringent carbon tax is not conducive to potential manufacturer’s entering into the market.2.If the incumbent manufacturer adopts the low-carbon technology,increasing the carbon tax is not conducive to the potential manufacturer’s entering into the market.3.When the cost of the entering the market is higher,the incumbent manufacturer monopolizes the market and adopts the low-carbon technology if the carbon-tax is high.When the cost of the entering the market is lower,the incumbent and entrant manufacturer’s technology choice is influenced by the market volume and the carbon reducing efficiency.If the market demand is large,the strict carbon tax policy can guide the manufacturer to use the low carbon technology;but if the market demand is small,the carbon tax policy is partly or completely invalid.