solar cell is an electronic device that catches sunlight and turns it directly into electricity. It’s about the size of an adult’s palm, octagonal in shape, and colored bluish black. Solar cells are often bundled together to make larger units called solar modules, themselves coupled into even bigger units known as solar panels.
It’s true that the more light the panels receive, the more electricity they can generate. But they still work on cloudy days – just as a solar-powered calculator does.