“…However, the authors do not take into account either debt-equity conversion or sustainability issues. In this line, studies raised and developed new investment valuation models applied to infrastructure systems (Cooper and Nyborg, 2018;DiMuro et al, 2014;Hajji et al, 2017;Ho and Liu, 2002;Huang and Pi, 2014;Jackowicz et al, 2017;Jeong et al, 2016;Kashani et al, 2015;Kim et al, 2013;Lu et al, 2016;Pantelias and Zhang, 2010;Wibowo, 2006;Yan et al, 2017) and significant works on sustainable infrastructure financing. For example, Büyüközkan and Karabulut (2018) provided a structured overview of analytical assessment methods into conceptual sustainability frameworks; Lee and Zhong (2015) developed a financing instrument that securitises future income in the form of a hybrid bond for renewable energy projects; Shen et al (2016) examined the impacts of the contribution distribution between public and private sectors on project sustainability performance; Shen et al (2002) developed an alternative quantitative model for assessing the feasibility that a construction project gets involved in contributing to sustainable development; Quesnel et al (2017) developed a conceptual financing model for the water sector based on the electricity sector; Quesnel and Ajami (2018) examined advanced water financing through public benefit funds; and Shan et al (2017) analysed innovative models and mechanisms for sustainable construction finance.…”