The World Uses a Variety of Different Energy Sources
The world relies on a variety of different energy sources. In 2018, fossil fuels, such as oil, gas and coal, made up more than 81 percent energy consumed. Renewable energy sources, such as solar power, wind power, hydroelectricity and biomass, make up for 14 percent. Nuclear energy is responsible for another 5%. Different countries have different combinations of energy sources, while balancing the environmental aspects with economics.
Energy is present in nature in many forms: sunlight and wind, waves, oceans and more. These sources of energy are transformed into more convenient forms of energy, like electricity or heat, once they esperienza consolidata dalla sala riunioni are harnessed. When the energy source is exhausted, they are nonrenewable energy sources.
A lot of fossil fuels and a few of the other energy sources that are not renewable are causing harm to the environment. For example mining for oil may destroy the forests of the planet. Fracking (hydraulic fracture) can result in water pollution and earthquakes. Carbon dioxide is released when coal is burnt, which contributes to global warming.
Fortunately that many of the most promising sources of energy are renewable and sustainable. Hydropower, wind and solar for instance, can produce electricity without the need to search for new sources.
Other sources of sustainable energy are emerging, such as the wave and tidal power. However, to be used on a large scale these technologies need effective distribution networks. This requires the use non-renewable energies to build these networks. Therefore, these sources aren’t sufficient to meet the majority of our energy requirements. But it’s important keep in mind that prices for renewable energy equipment have decreased drastically over the last few years, and efficiency is growing quickly.