Kitami, Tomoya

Currently, ESG investment, which invests in environmental projects, is attracting attention to achieve the “2 ° C target” adopted at COP21, which is the goal of global climate change countermeasures. An increasing number of organizations are in favor of disclosing information on climate change related to ESG assessments. As the global situation surrounding sustainable finance changes drastically, more attention is being paid to green bonds, which help companies that make reliable green investment proposals and effectively reduce their environmental impact. According to the Ministry of the Environment’s Green Bond Guidelines, disclosure of environmental improvement effects is desired to be as quantitative as possible. Furthermore, in the case of green buildings, it is important to verify from a comprehensive perspective, as multiple indicators such as energy efficiency, carbon performance, and waste management are listed. The contribution of LCA, which quantitatively analyzes the environmental impact of the life cycle from a comprehensive perspective, is significant for these needs. In this study, we use LCA to evaluate the environmental impact of the energy-saving office building construction business, which is one of the investment processes for issuing bonds to allocate funds to the environmental business, which is called “green bond”. To verify the feasibility of quantitatively analyzing the return on investment from the environmental perspective by clarifying the environmental impact reduction effect from the perspective of the life cycle by evaluating the environmental bond business. Was aimed at. In this study, we evaluated the environmental impact of the building construction project subject to this study, which was certified as an environmental bond business, and compared the results with other standard buildings to analyze the effect of reducing environmental impact from a comprehensive perspective. In addition to the energy-saving effect, it was confirmed