We require a variety of energy sources to work and live. Solar, wind, geothermal and biomass are just a few of the sources. In addition to being the primary source of electricity they can also be used to transportation and heating. The main issue for these energy sources is that they could cause greenhouse gas emissions if they are burned to produce electricity. This means that there is a need for more sustainable sources of energy.
The most widely used kind of energy is called fossil fuels, comprised of coal, oil, and natural gas. They were created millions of year ago when prehistoric animals and plants died and were buried beneath layers of sedimentary rocks. In the proper conditions, they slowly transformed into carbon-rich substances which, when burnt, generate energy. These fossil fuels are not renewable because they will run out in our lifetimes or even in many lives.
Renewable energy sources are continuously replenished. The sun is the primary source of renewable energy since it provides heat and light. We use it to power our homes as well as for businesses and automobiles. Wind is an energy source renewable that generates electricity through spinning turbines. Since the first people discovered how to harness wind and harness it, we have been using it for millennia. We utilize biological processes to produce alcohol (a clear, alcohol-like substance that can be used for fuel) from crops and waste.
Among these sources hydropower is the most significant renewable energy source in the United States, though wind and biofuels are expected to be the next to take over. Hydropower relies on nature’s cyclic water cycle to harness the power of rapid-flowing water, which is used for electricity generation.
