In this article, which is discussed at a time when initiatives towards renewable energy sources are increasing and reducing fossil fuel consumption; the factors that need to be examined for the installation of an off-grid solar panel system were examined and in line with the data obtained, a system was designed for a tiny-house. An off-grid system with 10KWh power consumption with optimum irradiance data has been found on how many square meters of PV system will be needed to operate it. How to meet the stable 10KWh need for the worst month, the amount of battery capacity required has been examined. A system inventory has been allocated. The province of Pamukkale in Turkey, with a latitude of 37.89°, was chosen for the solar panel installation; It is aimed to meet all the electricity needs of the house, which was built in a forest area 8 km away from the mains, with the solar panel system to be installed. From theory to practice with an academic approach as well as solar energy sector jargon; in this article, includes a two-way study. A solar panel system was installed in line with the data obtained and the 7600Wh value that the house to be built would need, and 29 batteries integrated into the system were sized for cases where the system could not provide sufficient energy through the sun with a 1% probability. Thus, the design of the optimum "Solar Energy System" desired for a certain location and compatible estimation calculations will be able to provide examples of this study.