能源费用托管型合同下嵌入视角的供应链合作减排决策研究

Research on the Decision of Cooperative Emission Reduction in Supply Chain under Energy Costs Hosting Contract from the Perspective of Embeddedness

研究能源费用托管型合同下节能服务公司(ESCO)提供嵌入式低碳服务的供应链合作减排决策问题。首先,分别建立无节能服务公司参与,以及基于能源费用托管型合同有节能服务公司参与的供应链合作减排博弈模型;其次,讨论两种情形下的减排效果,分析供应链与节能服务公司合作减排的条件;最后,基于能源费用托管型合同,探讨嵌入式低碳服务对供应链减排决策的影响,具体分析相关参数对供应链最优决策的影响。结果表明:满足一定条件下,供应链才会选择与ESCO进行合作减排;当嵌入度(合同期内的等额现值系数与项目经济寿命期内的等额现值系数之比)达到某一既定值时,二者碳减排项目价值的关注开始趋于一致;高水平的嵌入度可实现较好的减排效果,且嵌入度与供应链的期望利润呈U型变动关系,与ESCO的期望利润呈正相关关系。

Energy performance contracting has become the popular method to solve the carbon emission problem for manufacturers.In academia,research on the problem of supply chain cooperation and emission reduction under share savings or guarantee savings contracts has been studied,and the emission reduction issues under energy cost hosting contracts have not been considered.In view of the above considerations,the decisionmaking issue of cooperative emission reduction in the supply chain when energy service company(ESCO)provides embedded low-carbon services under energy costs hosting contract is explored.Two scenarios of game models are established including cooperative emission reduction in the supply chain without the participation of ESCO,and with the participation of ESCO under energy costs hosting contract.The results indicate that,only when certain condition is met,the supply chain will choose to cooperate with ESCO;when the embedding degree(the ratio of the equal present value coefficient during the contract period to the equal present value coef⁃ficient during the economic life of the project)reaches a certain value,the degree of commonality in the value of carbon emission reduction begins to converge;A high level of embedding degree could achieve better emission reduction effects,and the embedding degree has an U-shaped relationship with the expected profit of the supply chain,and is positively correlated with the expected profit of the ESCO;For manufacturers,it is better to build a medium and long-term cooperative relationship with ESCO.These conclusions provide theoretical reference for the effective application of energy cost hosting contracts in the context of supply chain.