Renewable energy comes from matter that nature produces and replenishes constantly. The power generated through this source does not significantly threaten the environment, especially in comparison with fossil fuels… according to the United Nations. Renewable energy derived from wind, solar, geothermal, hydrokinetic, and hydro energy has a much lower environmental impact than fossil fuels. It harnesses the power of readily available elements and does not diminish with use. …And because wind and sunlight are inherently free, there are no ongoing feedstock costs. Bioenergy, otherwise known as biomass energy, is, however, different. This kind of power involves using living matter or matter that was recently been alive. …Trees are also used, most oftenfrom the forests of the U.S. South, including pine and hardwood species. …Supporters argue that bioenergy is a climate-friendly, sustainable power source that helps local economies. The truth is that wood pellet plants are as dirty and problematic as coal plants.