What is the difference between a solar cell and a photovoltaic panel or array?
A solar cell is a single device. A photovoltaic or solar panel consists of multiple solar cells connected together into a single unit to protect the solar cells and increase the voltage and power above that of a single solar cell. Typically, you cannot buy solar cells, only photovoltaic panels. “Photovoltaic panel” and “photovoltaic array” are sometimes used interchangeably, but a photovoltaic array refers to all of the photovoltaic panels in particular systems that are connected together.