A solar cell converts sunlight directly into electrical energy by functioning as a semiconductor device that generates a voltage when exposed to solar radiation. To maximize output from a solar photovoltaic (PV) system, panels can be mechanically tracked to always face the sun or electrically tracked to manipulate the load and maximize power under changing temperature conditions. Maximum power point tracking (MPPT) is an electronic system that operates PV modules at their maximum power point to extract more power than otherwise possible, increasing battery charge by up to 30%. It varies the electrical operating point rather than physically moving modules.