Study on non-energy benefits (NEB) by area-wide energy utilization: Identification and allocation of stakeholders' benefits

In the building field, for the purpose of further energy saving and lower carbon intensity, area-wide energy utilization is expected to play an important role in Japan. But such projects require agreement among stakeholders belonging to the area, which is one of the major hurdles of the realization. This paper describes the promotion measures to motivate agreement among stakeholders as below; 1. Indicating the further improvement of the cost-benefit ratio (B/C) to be shared among stakeholders in consideration of a variety of non-energy benefit (NEB) 2. Identifying B/C for each stakeholder in consideration of the revert of each cost and benefit belonging to some specific stakeholders 3. Expression of the risk caused by the uncertainty of cost and benefit estimation in the early planning phases of projects, and seeking proper allocation of cost and benefit, depending on the difference of the risk preference among stakeholders The effectiveness of the concept above is verified through a case study based on an actual project.