多目标碳配额分配下的减排技术投资策略研究

Study on the investment strategies of emission reduction technology under the multi-target carbon quota allocation

本文研究政府在多目标碳配额分配条件下,行业内减排效率差异企业的最优减排技术投资策略.通过建立政府与企业的博弈模型,采用理想点法对多目标规划问题进行求解,分析碳配额政策对企业技术投资决策的影响.数值分析结果显示,在政府兼顾社会效益和经济效益的多目标配额分配条件下,低减排效率企业更有可能投资进行技术升级,以获得政府分配的更多配额,而高效率企业的投资动力不足.另外,技术投资成本下降或减排技术代际差异扩大时,行业内两企业投资升级技术的可能性增加.所得结论对于政府制定合适的碳配额分配政策,以及相关配套措施促进全行业的技术升级具有重要意义.

This paper studies the optimal investment strategies of enterprises with different emission reduction efficiency under government’s multi-objective carbon quota allocation.By establishing a game model among the government and the enterprises and using the ideal point method to solve the multi-objective programming problem,we analyze the impacts of quota allocation policy on the enterprises’ decisionmaking of technology investment.The numerical analyzing results show that,under the multi-objective quota allocation that the government combines social benefits and economic benefits,the enterprises with low emission reduction efficiency are more likely to invest in technology upgrades to obtain more quotas allocated by the government,while the investment motivation of high-efficiency enterprises are insufficient.In addition,when the cost of technology investment declines or the intergenerational difference in emission reduction technologies expands,the possibility increases that all enterprises across the whole industry invest in upgrading technologies.These conclusions are of great significance for the government to formulate appropriate carbon quota allocation policies and corresponding supporting measures to promote industry-wide technology upgrades.