In the early of 1970s, solar photovoltaic (PV) was employed in Libya to power tiny remote systems like rural electrification schemes. It was actually used in isolated places where it's costly to connect to the electricity grid. Contrary to standard off-grid energy systems like diesel generators, these systems are viable due to the cost of carrying fuel and the difficulty of reaching these sites. Therefore, this study was conducted for the purpose of the design and simulation of an autonomous photovoltaic (PV) system. Under a variety of climatic situations, we discussed the power/voltage and current/voltage characteristics of the photovoltaic module. After that, we modelled the various components of the photovoltaic system, including the PV array, the DC/DC boost converter, as well as its MPPT controller, and the battery as storage system. As findings, the study concludes by demonstrating that the P&O MPPT approach tracked the optimal operating point optimal with suitable dynamics and acceptable oscillations, and this by examining two scenarios of irradiation and temperature variation.