Battery autonomous of photo voltaic off-grid solar energy systems and economic analysis of system

Off-Grid solar power plants store the energy obtained from the sun via photovoltaic panels in a battery group. The stored energy is used when there is no sun. Installing an off-grid power plant to be used individually or jointly in any place requires high costs. In such systems, the main expectation is to recover the initial investment costs of the system and to make the system profitable. However, after the systems work regularly for a while, the batteries lose their energy storage capacity. In this case, the installed system negatively affects the users economically. In this study, the battery lifespans of a standard system and a system with battery autonomy were compared, and the system that would provide battery autonomy of a PV off-grid solar power plant was experimentally designed. The economic analysis values of the system were calculated with the data obtained at the end of the study. In the light of these values, it has been seen that a system with battery autonomy works more efficiently and pays for itself in a short time, although a standard system is constantly losing. In addition, it has been determined that system efficiency can be increased by adding a basic level of software and hardware. As a result, it has been seen that the developed system can be used in different applications from the simplest electric vehicles using batteries to the most complex power plants, and the recovery times can be significantly reduced.