Paper Title
MULTI-FACTOR MATRIX MODEL FOR OPTIMIZING LOCATION-DEPENDENT COSTS OF GRAVITY ENERGY STORAGE

Abstract
Abstract - The location-dependent costs of Gravity Energy Storage systems are analyzed in a multi-factor spatial parameterization model for evaluating the existence of a point of minimum cost in a suburban mountainous geography. From a case study of 500x500 points in a 50x50km2area around Fukuoka in Japan, it is found that the cost of material transportation and transmission is more dominant in determining the position of minimum costs. The position of the minima is also related to the principal urban area in that the line connecting the Center Business District(CBD) and suburban flat areas (line 1) is where the potential minima lie. The intersection point of an orthogonal to the line connecting the CBD with a substation nearest to the flat area with line 1, is the potential zone of minima location. Keywords - Gravity Energy Storage, Location-Dependent Cost, Suburban Energy Systems, Socio-Economic, SpatialmatrixModeling