A photovoltaic (PV) system converts sunlight directly into electricity using panels made of semiconductor cells, typically silicon. It's the technology behind rooftop solar installations, large solar farms, and off-grid power setups. Solar panels, also called PV panels, are combined into arrays in a PV system. It consists of an arrangement of several components, including solar panels to absorb and convert sunlight into electricity, a solar. Photovoltaics (PV) is the conversion of light into electricity using semiconducting materials that exhibit the photovoltaic effect, a phenomenon studied in physics, photochemistry, and electrochemistry. An individual PV cell is usually small, typically producing about 1 or 2 watts of power.