The world uses many different energy sources. Fossil fuels, including natural gas, oil and coal–accounted for more than 81 percent of all energy consumed in 2018. Renewables, like solar power, wind power, hydroelectricity and biomass, make up for 14 percent. Nuclear energy is another 5 percent. Different countries have different sources of energy to meet environmental and economic requirements.
Nature’s energy can be found in a variety of forms including sun, wind waves, and ocean. When harnessed and converted into more practical forms of energy, like heat or electricity, these are known as primary sources. When those energies are used up, they become nonrenewable energy sources.
The environment is damaged by a variety of fossil fuels in addition to other energy sources that aren’t renewable. For instance mining for oil could strip the planet’s pristine forests. Fracking (hydraulic fracture) can https://leonardogiombini.it/2019/02/14/interessante-articolo-sui-biocarburanti lead to water pollution and earthquakes. Carbon dioxide is released when coal is burnt and contributes to global warming.
Fortunately, a majority of the most promising sources of energy are sustainable and renewable. Wind, solar and hydropower can create, for instance, electricity without having to dig for new sources.
Tidal and Wave Power are two other sustainable energy sources that are emerging. To be used at large scale, these sources of energy require efficient distribution networks. This requires the use of non-renewable energies to build these networks. These sources aren’t enough to provide the majority of our energy demands. Still, it’s important to keep in mind that the costs for renewable energy-related equipment have fallen significantly in the past few years, and efficiency is growing rapidly.