The world uses many different energy sources. Fossil fuels — including natural gas, oil, and coal–accounted to more than 81 percent of all energy consumed in 2018. Renewables such as solar power, wind power biomass, hydroelectricity, and wind power make up 14 percent. Nuclear energy contributes another 5 percent. Different countries use different sources of energy to meet environmental and economic requirements.
Energy is found in nature in many forms: sunlight, wind, waves, oceans and more. When harnessed and converted into more https://leonardogiombini.it/2018/06/02/leonardo-giombini-e-le-energie-rinnovabili/ efficient forms of energy, like electricity or heat, these are known as primary sources. When the energy source is exhausted, they are non-renewable energy sources.
The environment is damaged by many fossil fuels in addition to other non-renewable sources of energy. Oil mining, for example is a destructive process that can destroy the forest ecosystems of the planet. Fracking (hydraulic fracturing) can result in earthquakes and water pollution. Carbon dioxide is released when coal is burned which causes global warming.
Fortunately, many of the most promising sources of energy are renewable and sustainable. Wind, solar and hydropower generate, for instance electricity without the need to dig up new sources.
Other sources of sustainable energy are emerging, including wave power and tidal energy. To be used at an extensive scale, these technologies need to have effective distribution networks. These must be built using a source of non-renewable energy. Therefore, these sources aren’t able to provide the bulk of our energy requirements. Still, it’s important to keep in mind that costs for renewable energy equipment have come down drastically over the last few years, and the efficiency is rising rapidly.
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