In Slovenia's capital, Ljubljana has emerged as a hub for advanced lithium battery production. These energy storage systems now power everything from electric vehicles to solar farms, offering 30% higher energy density than conventional alternatives according to 2023 EU energy. Despite the global importance of solar energy, its variability requires energy storage to balance production during peak and off-peak periods. Moreover, the transport sector is undergoing a global transition from internal combustion engines to electric vehicles. Suitable for printing and offline. Since vehicles are idle 95% of the time, electric vehicle batteries, when connected to a grid, can effectively regulate intermittent photovoltaics using vehicle-to-grid technology. This conceptual study investigates the feasibility of a nationwide energy infrastructure that relies solely on solar. How: In this study a Python version 3. program model is used to simulate a system in which EVs using V2G technology are used as the only BESS to store excess PV production.