@inproceedings{oai:kutarr.kochi-tech.ac.jp:00000921, author = {Uchida, Kenetsu and Ishiguro, Yukako and Kagaya, Seiichi}, book = {Society for Social Management Systems Internet Journal}, issue = {1}, month = {Mar}, note = {Natural gas is highly demanded in various industries due to low emission of CO2 compared with the other fossil fuels. Natural gas cogeneration system which provides inhabitants living in an area with electricity and heat energy has high energy conversion efficiency. One of the challenges of the natural gas cogeneration system under the present situation where some counter measures against environmental issue are urgently required is its promotion. The natural gas cogeneration system is regarded as a good system to cope with environmental issues, however, the profitability of the system may prevent the promotion. In this study, a project scheme for the natural gas cogeneration system is developed, and an economical analysis method developed based on the scheme is also proposed. The stake holders addressed in the present study are project company, financial institution, gas supply company, local authority, and inhabitants of the district. The project company operates the cogeneration system without seeking a profit. The financial institution supplies funds to the project company with an interest rate. The gas supply company provides the project company with natural gas, and invests in the project. It is assumed that the local authority guarantees the debt of the project company, and that the guarantee of the debt by the local authority enables lower interest rate from the banking institution. Among the stake holders, a cooperative behavior is assumed. Accordingly, the behavior by the stake holders is not to maximize their own benefits by the project but to maximize the total benefit subject to the constraint where no stake holder has debt by the project. Distributions on costs and benefits among the stake holders were clarified by an analysis carried out by assuming that the natural gas cogeneration system was introduced to downtown Sapporo. All of the stakeholders received positive net benefit form the project.}, publisher = {Society for Social Management Systems}, title = {A Study on Feasibility Evaluation of a Gas Cogeneration System Considering Demand Fluctuation Risk}, volume = {4}, year = {2008} }