Solar panels can lower your power bill and are environmentally friendly. Solar cells absorb light rays from the sun and convert them into energy. Solar cells are unlike any other kind of cell because they don’t require a constant flow of power to generate energy as most other cells do. They only need sun rays, which means that once it’s been made solar panels can produce even more energy than they took in. 
Solar panels are expensive. But why pay money when you can make your own for way less? In this video, you will learn how to build a solar panel out of aluminum cans.