The world relies on a variety of energy sources. Fossil fuels — including natural gas, petroleum and coal–accounted to more than 81 % of the energy consumed in 2018. Renewables such as wind power, solar energy biomass, hydroelectricity and biomass make up 14 percent. Nuclear energy is responsible for another 5%. Different countries use various energy sources, balancing environmental and economic requirements.
Nature provides energy in a number of forms, including sunlight winds, waves oceans and more. When harnessed and converted into more convenient forms of energy, like electricity or heat, these are referred to as primary sources. When these energy sources are exhausted, they become nonrenewable energy sources.
The environment is damaged by many fossil fuels, as well as some other energy sources that aren’t renewable. Mining oil, for instance is a destructive process that can destroy the forests of the earth. Fracking (hydraulic fracture) could cause earthquakes and water pollution. Carbon dioxide is released when coal is burned and contributes to global warming.
Fortunately there are many promising energy sources are sustainable and renewable. Wind, solar, and hydropower can produce, for instance, electricity without the need to dig up new sources.
Other sources of sustainable energy are emerging, like wave power and tidal energy. However, in order to be utilized in a large-scale manner these technologies require efficient distribution networks. This requires the use of non-renewable energies to build these networks. Therefore, these sources aren’t enough to supply the majority of our energy requirements. However, it’s important to keep in mind that costs for renewable energy-related equipment have fallen significantly over the last couple of years, and efficiency is growing quickly.
https://leonardogiombini.it/2020/06/02/primi-3-punti-chiave-di-unesperienza-centralizzata/