The world is awash with a variety of energy sources. Fossil fuels–including natural gas, oil, and coal–accounted to more than 81 % of the energy consumed in 2018. Renewables such as solar energy, wind power biomass, hydroelectricity, and wind power account for 14 percent. Nuclear energy is responsible for another 5%. Different countries employ different energy sources to balance economic https://leonardogiombini.it/2018/10/19/i-vantaggi-delle-centrali-energetiche/ needs and environmental concerns.
Nature provides energy in a number of forms: sunlight, wind, waves, ocean and many more. These primary sources are transformed into more convenient forms of energy, like heat or electricity, when they are harnessed. When those energies are used up, they become nonrenewable energy sources.
Many fossil fuels and some of other energy sources that are not renewable are damaging the environment. Oil mining, for instance can cause the destruction of our forests that are virgin to the earth. Hydraulic fracturing (fracking) can cause earthquakes and water pollution. Carbon dioxide is released when coal is burnt which contributes to global warming.
Fortunately that many of the most promising energy sources are renewable and sustainable. Hydropower, solar power and wind for instance, can produce electricity without having to search for new resources.
Tidal and Wave Power are also renewable energy sources that are emerging. However, to be utilized at a large scale they must have effective distribution networks. They must be constructed and operate with the use of non-renewable energy sources. Therefore, these sources aren’t capable of meeting the majority of our energy requirements. It’s important to remember that the cost of renewable energy equipment have decreased dramatically in recent times and the efficiency is rising.