Roof-Mounted PV Systems

Roof-mounted PV systems commonly use PV panels that are often arranged in sets, collectively called arrays. There are also special types of roof tiles and shingles with integrated PV technology, so you might not immediately recognize a roof-mounted system if it uses these rather than traditional solar panels. The solar panels or other PV materials absorb sunlight and turn it into power in the form of direct current (DC), which must be converted into alternating current (AC) before it is ready to run lights, appliances, and devices within a traditional 120-volt AC system.