Eksergi, Vol. 19, No. 1. Januari 2023 https://jurnal.polines.ac.id/index.php/eksergi Copyright © EKSERGI Jurnal Teknik Energi ISSN 0216-8685 (print); 2528-6889 24 Solar Cell Outdoor Bench Design In Open Public Space For Gadged Charging Station Abdul Hamid* (1) , Muhammad Yusuf (2) , Eritrian Bisma Primayanda (3) , Naila Sa'adatil Muna (4) , Rianti Setyarini (5) 1,2,3,4,5 Department of Industrial Engineering , Universitas 17 Agustus 1945 Banyuwangi, Banyuwangi, Indonesia *Email address : hamidbinabdullah@untag-banyuwangi.ac.id Abstract—The increase in electrical energy is increasing in tandem with rapidly developing technological needs. However, on the other hand, electricity technology also produces negative impacts such as air and noise pollution caused by power plants. Electrical energy generation is still mostly generated from fossil fuels. A solution that can overcome this problem is to switch to more environmentally friendly electricity technology, such as solar panels. This solar powet plant can be used as an option as a charging energy source in a smart furniture. This research aims to make Solar Cell Powered Outdoor Charging Bench technology. This bench has several important components, namely: Solar Panel, Solar Charging Controller (SSC), inverter, and battery. This Outdoor Bench is placed in an open place such as a park, Public Open Space and so on which will be used as a charging place for cellphones or laptops. The way this bench works starts with the absorption of solar heat by solar panels on the roof of the bench which is converted into low-voltage electrical energy, then this energy is stored in a dry battery (battery) through SSC, low-voltage electricity is converted through an inverter, and this inverter channels electricity to the socket, so that the charging bench can be used properly. Keywords - Electrical technology, Solar panel, Outdoor Charging Bench I. INTRODUCTION It's very difficult to eliminate the use of devices or gadgets by the public. Almost for every minute, people will need a terminal to charge their device whether it is a cellphone, tablet, or laptop. However, device charging facilities are very minimal in open spaces. Urban areas in tropical countries such as Indonesia have enormous solar energy potential, but its utilization is still not maximized [1]. The potential of solar energy can be used by Public Open Space, especially in urban areas such as in Banyuwangi. Public Open Space is one of the facilities managed by the local government. That is one ofthe urban facilities that must be owned by every region, even almost every region in other countries also have it. With the mention of "Open Public Space", Thats in each location has the same function and purpose [2]. Open space is a shared location that is used publicly. Whether with strangers, friends, or colleagues. It is also a space that can be used for politics, religion, sports, or other needs. The existence of open space can be used to support the needs of daily life in urban areas [3]. The purpose of open space is among others as a medium that provides air and lighting, reduces density, recreational facilities, as an ecological function, and shapes the physical city [4]. In Indonesia, the use of public spaces is usually utilized for recreation and ecological functions to accentuate the impression of "public" in an area [5]. Solar powet plant (SPT) itself is an application tool for utilizing solar energy as renewable electrical energy, namely solar cell technology (photovoltaic) which is used as a power plant [6]. Important components that are installed in this setup so that solar powet plant can function optimally. The components used are: a) Solar panels that convert sunlight into electricity which is an important component that must be present in the solar power plant system. (b) Solar Charge Controller, an electronic device placed between the solar module and the battery. This tool regulates the battery charging power from the output power of the solar module so that the battery does not overcharge [7]. (c) Battery is a component that stores energy generated by solar panels. During battery charging, depth of discharge (DOD) refers to how much battery power can be transmitted to the load through the inverter. Battery power cannot be fully charged until the battery is about 80% empty, which reduces battery life [8]. d) An inverter is a device used to convert direct current (DC) into alternating current (AC). The design of solar panels requires the main components, namely power and charging time, inverter power, solar panel power and battery current [9]. solar power plant produces maximum power depending on the intensity of the incoming light every day, weather is the main disturbance that can interfere with the absorption of light intensity processed by solar panels into electricity [10]. Based on its installation, solar power plant is divided into two parts, namely off-grid system and grid connected system. Off-grid solar power plant is also called a stand-alone system, and on- grid solar power plant is solar power plant connected to a utility network or connected to the PLN network [11]. The total load planned in making this tool is 2 plugs for charging Gadged which has a specification of 0.7 A with a voltage of 220 V and 1 lamp 0.025 A with a voltage of 220 V. In this research, the author aims to create a gagged charging station using an environmentally friendly off-grid. The required energy can be generated from the gadged charging station itself, without PLN power. II. METHODS A. Type of Research Method The research method uses design, with steps of literature study, design, assembly, testing, and analysis. Prototype design is used to create an ergonomic bench design, then assembly of solar panels and testing to see the success of the product and then analysis. With the design method, the design, manufacture, and testing steps are carried out systematically. The first stage begins with assembling the bench frame and continues with the installation of electrical components. The bench frame is made of hollow iron and wood as a seat and backrest. Furthermore, the installation of electrical components such as solar panels, batteries, inverters, outlets, and others is carried out after the bench frame has been completed. Before the components are installed on the bench, the electrical components are tested first. After testing is