抄録
We developed the scheme of profitability analysis of a microgrid. The scheme consists of 4 processes. The first process is to calculate the optimal sizing of energy supply system in a microgrid by solving mixed integer non-linear programming by using the General Algebraic Modeling System (GAMS). The second one is to determine the distribution of system equipment by taking space in each area into account. The third one is to design electric equipment, such as transmission. The forth one is evaluation of pay-back time, reduction rate of primary energy consumption and that of carbon dioxide emission. By using this scheme we also evaluate pay-back time about construction of a microgrid in Tokyo.
