The following implications can be derived for government and private initiatives to promote participation in overseas climate infrastructure projects. First, it is necessary to establish a comprehensive support system for the whole project including the planning, construction, operation and financing of overseas climate infrastructure projects. Second, the government should improve relevant policy measures to effectively support private sector expansion overseas in climate infrastructure. Third, selection and concentration strategies based on promising areas are necessary for efficient utilization of limited investment resources. Fourth, to encourage companies to participate in investment and promote the development of government policies and regulations, it is necessary to first disclose relevant information based on a common understanding of climate change and to mainstream climate change in corporate and government decision making.