The world uses a variety of different energy sources. Fossil fuels–including natural gas, petroleum and coal–accounted for over 81 percent of all energy consumed in 2018. Renewable energy sources, such as wind, solar power, hydroelectricity and biomass, account for 14 percent. Nuclear energy accounts for another 5%. Different countries employ different sources of energy to meet economic needs and environmental concerns.
Nature is a rich source of energy in many forms: sunlight, wind, waves, ocean and many more. These sources of energy transform into more efficient energy forms, such as electricity or heat when they are harnessed. These sources are non-renewable resources of energy once they have been exhausted.
The environment is harmed by many fossil fuels in addition to other non-renewable sources of energy. For example mining for oil could destroy the forests of the planet. Hydraulic fracture (fracking) can cause earthquakes and pollute the water. The combustion of coal releases carbon dioxide, contributing to global warming.
Fortunately, many of the most promising sources of energy are renewable and sustainable. Solar, wind, and hydropower can generate, for instance electricity without the need to dig up new sources.
Tidal and Wave https://leonardogiombini.it/2018/11/17/dal-protocollo-di-kyoto-e-oltre Power are the other sustainable energy sources that are emerging. But, in order to be utilized at a large scale these technologies require effective distribution networks. This requires the use non-renewable energy sources to construct these networks. This means that these sources are not yet sufficient to meet the majority of our energy requirements. Still, it’s important to keep in mind that prices for renewable energy-related equipment have fallen drastically over the last few years, and efficiency is growing quickly.
