We require a variety of energy sources to https://leonardogiombini.it/2018/06/02/leonardo-giombini-e-le-energie-rinnovabili/ work and live. They include wind, solar geothermal, biomass, and geothermal sources. In addition to being an important source of electricity they are also used for heat and transport. The main challenge with these sources of energy is that they can create greenhouse gas emissions if they are burned to produce electricity. This results in the need for more sustainable energy sources.

Fossil fuels are the most common form of energy. They comprise oil, coal and natural gas. They were formed millions of year ago when prehistoric animals and plants died and were buried under layers of sedimentary rocks. In the right conditions, they slowly transformed into carbon-rich substances that, when burned, generate energy. These fossil fuels won’t be renewable, as they’ll end up being depleted in our lifetimes or in a number of lives.

Renewable energy sources are replenished continuously. The most important renewable energy source is sunlight, which gives light and heat. It is used to power our homes and businesses as well to drive cars. Wind is an energy source renewable that generates electricity through spinning turbines. We have been using it since the first discovered how to harvest the wind for millennia. Finally, we use biological processes to produce ethanol (a clear alcohol that can be used to fuel) from waste and crops.

Among these sources hydropower is the biggest renewable energy source in the United States, though wind and biofuels are expected become the leading source of energy in the near future. Hydropower draws on nature’s hydro cycle to harness the power of swiftly flowing water, which is then used for electricity generation.