The World Uses a Variety of Different Energy Sources

The world is dependent on a range of energy sources. In 2018, fossil fuels, such as oil, gas and coal, accounted for more than 81 percent of energy consumed. Renewables, such as solar power, wind, hydroelectricity, and biomass, account for 14 percent. Nuclear energy is 5 percent. Different countries have different mixes of energy sources, in order to balance economic needs with environmental concerns.

Nature’s energy can be found in a variety of forms like sun, wind waves, and ocean. When harnessed and converted into more efficient forms of energy, like electricity or heat, these are called primary sources. These energy sources become non-renewable sources of energy once they have been exhausted.

A lot of fossil fuels and a few of the other nonrenewable energy sources can be harmful to the environment. For example mining for oil could strip the planet’s pristine forests. Hydraulic fracturing (fracking) can trigger earthquakes and water pollution. Carbon dioxide is released when coal is burnt, which contributes to global warming.

Fortunately, the majority of the most promising sources of energy are https://leonardogiombini.it/2018/11/17/dal-protocollo-di-kyoto-e-oltre/ sustainable and renewable. Solar, wind, and hydropower can, for example, generate electricity without digging up new sources.

Other renewable energy sources are emerging, like tidal and wave power. To be used at an enormous scale, these technologies require effective distribution networks. This requires the use non-renewable energy sources to build these networks. These sources are not able to fulfill the majority of our energy demands. It’s vital to remember that the cost of renewable energy equipment have decreased dramatically in recent times and that efficiency is increasing.