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The world is awash with a variety of energy sources. In 2018 fossil fuels such as oil, gas and coal, were responsible for over 81 percent of the energy consumed. Renewable energy sources such as solar power, wind power biomass, hydroelectricity, and wind power are responsible for 14 percent. Nuclear energy accounts for another 5percent. Different countries use different combinations of energy sources, in order to balance the needs of the economy with environmental concerns.

Energy is present in nature in many forms: sunlight as well as wind, waves ocean and more. When harnessed and converted into more practical forms of energy, like heat or electricity, these are referred to as primary sources. Once these energies are exhausted, they turn into nonrenewable energy i vantaggi delle centrali energetiche sources.

The environment is damaged by many fossil fuels, as well as some other energy sources that aren’t renewable. For example mining for oil can degrade the world’s forests. Hydraulic fracturing (fracking) can trigger earthquakes as well as water pollution. Carbon dioxide is released when coal is burned, which contributes to global warming.

Fortunately, a lot of the most promising sources of energy are sustainable and renewable. Wind, solar, and hydropower can create, for instance, electricity without digging up new sources.

Tidal and Wave Power are also renewable energy sources that are emerging. To be used at large scale, these sources of energy require efficient distribution networks. This requires the use of non-renewable energy sources to construct these networks. This means that these sources aren’t enough to supply the majority of our energy requirements. It is important to keep in mind that the costs for renewable energy equipment have decreased drastically over the last few years, and efficiency is increasing rapidly.