Photovoltaics (PV) is a term which covers the conversion of light into electricity using semiconducting materials that exhibit the photovoltaic
effect, a phenomenon studied in physics, photochemistry, and electrochemistry.
A typical photovoltaic system employs solar panels, each comprising a number of solar cells, which generate electrical power.
PV installations may be ground-mounted, rooftop mounted or wall mounted. The mount may be fixed, or use a solar tracker
to follow the sun across the sky.