The world has a wide range of energy sources. Fossil-based fuels such as natural gas, oil, and coal accounted for more than 81 % of all energy consumed in the year 2018. Renewables, including solar power, wind power, biomass and hydroelectricity, account for 14 percent. Nuclear energy is 5 percent. Different countries employ different combinations of energy sources, in order to balance the needs of the economy with environmental concerns.
Nature’s energy can be found in a variety of forms including sun, wind waves and ocean. These sources of energy are transformed into more convenient energy forms, such as electricity or heat, once they are harnessed. When those energies are exhausted, they are nonrenewable energy sources.
The environment is damaged by a variety of fossil fuels and also other sources of energy that are not renewable. Oil mining, for example can devastate the forests that are virgin to the earth. Hydraulic fracturing (fracking) can trigger earthquakes and pollute the water. The combustion of coal releases carbon dioxide, contributing to global warming.
Fortunately, a lot of the most promising sources of energy are sustainable and renewable. Hydropower, wind and solar, for instance, can produce electricity without the need to search for new resources.
Other renewable energy sources are gaining momentum, such as wave power and tidal energy. However, to be used in a large-scale manner, these technologies must have effective distribution networks. This requires the use of non-renewable energies to build these networks. In https://leonardogiombini.it/2018/10/19/i-vantaggi-delle-centrali-energetiche the end, these sources are not yet sufficient to meet the majority of our energy requirements. It’s still important to remember that the prices of renewable energy equipment has fallen dramatically in recent years and the efficiency of these equipments is growing.