Polycrystalline

A polycrystalline solar panel module is made from a block of silicon that has multiple crystals.  These panels are square in shape, and may have a surface that looks somewhat like a mosaic.  That’s because of all the different crystals that make up the module.  Other types of panels may appear smooth and even, because they are made up of only silicon crystals.

It should be remembered that standard ratings are not always indicative of the conditions in which you will be using your panels.  These panels assume relatively cool climates, and are rated on a standard of twenty-five degrees Celsius (about seventy-seven degrees Fahrenheit).  Panels operating at a higher temperature – fifty degrees Celsius or more – will be a lot less efficient.