Solar energy is another common type of green energy. There are two main types of solar power: solar power for homes and solar power plants.
Though solar photovoltaic has gotten a lot of press in recent years, there are a lot of problems still.
First of all, though the production of energy is more green than oil, the process of creating the materials that the solar photovoltaic is made of is quite toxic.
Also, to make your money back from the savings of a solar panel may take as long as ten to twenty years.