Diverse energy sources provide us with the energy we need to live and work. These include wind, solar, geothermal, and biomass sources. In addition to being a major source of electricity, these sources are also used for transportation and heating. These energy sources can emit greenhouse gases when they are burned to produce electricity. This creates a need for more sustainable energy sources.

The most widely used kind of energy is called fossil fuels, comprised of coal, oil, and natural gas. They formed millions of years ago when prehistoric animals and plants died and were buried by layers of sedimentary rock. Under the right conditions these fossil fuels slowly transformed into carbon-rich materials that, when burned, produce energy. The fossil fuels cannot be renewable, as they’ll become depleted by the time we reach our age or over the course of many lifetimes.

Renewable energy sources are replenished continuously. The sun is the main source of renewable energy, because it is a source of light and heat. We use it to power our homes and businesses as well to drive cars. Wind is another renewable energy source, which generates electricity by spinning turbines. We have been using it since the first began to harness the wind for millennia. We employ biological processes to produce the ethanol (a alcohol-like substance that is clear and transparent that can be used to make fuel) from the waste of crops and other materials.

In the list of sources hydropower is by far the most important renewable energy source in the United States, though wind and biofuels are expected to take the lead soon. Hydropower is based on nature’s water cycle to harness the power of flowing water, which is used in turn to produce electricity.

https://leonardogiombini.it/2019/05/11/cosa-sono-gli-impianti-a-biomasse/