In any case, focus systems can Just about only take advantage of direct solar radiation. As a result, this type of solar panel needs a solar tracker. Copper Indium Gallium Selenide (CIGS) is another materials system of the era that achieves equivalent performance to silicon while using fewer poisonous resources. https://wordpress79124.dailyblogzz.com/36326264/solar-cell-phone-charger-no-further-a-mystery