Development Area for Floating Solar Panel and Dam in The Former Mine Hole (Void) Samarinda City, East Kalimantan Province

Abstract

<p class='IJASEITAbtract'>This study discusses using a multi-criteria decision model (MCDM) to determine a suitable area for floating solar panels and dams in former mine holes (voids) in Samarinda City. The existence of open coal mining activities causes damage to the surrounding environment. One of the damages is the formation of former mine holes (voids). The voids can be detected by satellite imagery. Samarinda City has hundreds of voids and has the potential to increase. Therefore, this study aims to describe areas that can become areas for developing floating solar panels and dams. In this study, MCDM was implemented using Fuzzy GIS (a technique that integrates Fuzzy Logic and GIS) concepts. Fuzzy GIS is used to determine the suitability area of several predetermined criteria. The land suitability criteria are classified using the Fuzzy Membership and the Fuzzy Overlay process. The results showed that there were 442 voids with a total area of 7,901 km². The suitability of floating solar panels and dams is divided into four classes, namely S1, S2, S3, and N. The number of voids in the suitability class of floating solar panels is 17, 26, 40, and 359 respectively. The number of voids in the suitability of the dams are 45, 133, 210, and 54, respectively. The majority of voids are spread in areas with low accessibility with more distances from 1 km, are in an area with high enough solar radiation with 1800-1900 kWh/m2/year, and are in an area with a slope of more than 10%.