1. solar panels Are power point is about solar panels

2. What are solar panels  Solar panels are devices that convert light into electricity. They are called "solar" panels because most of the time, the most powerful source of light available is the Sun, called Sol by astronomers. Some scientists call them photovoltaics which means, basically, "light- electricity."

3. How solar panels work  Systems can certainly be built that will provide all your electricity requirements, especially in counties receiving a good number of sunshine hours per year.  Once the system has been installed, the electricity generated can be considered to be almost free and environmentally friendly.

4. What does solar panels contain Solar panels contain photovoltaic cells wired together in serial or parallel, topped with protective glass or plastic, and backed with an aluminum or other base. Photovoltaic cells are made of semiconductor material, often silicon.