The world is dependent on a range of different sources of energy. In 2018 fossil fuels, like gas, oil and coal, were responsible for more than 81 percent energy consumed. Renewables such as solar energy, wind power biomass, hydroelectricity, and biomass comprise 14 percent. Nuclear energy is another 5 percent. Different countries use different mixes of energy sources, in order to balance the environmental aspects with economics.
Nature provides energy in a number of forms, including sunlight, wind, waves, ocean and more. When harnessed and transformed into more practical forms of energy, such as electricity or heat, these are called primary sources. These energies become non-renewable sources of energy when they are exhausted.
Many fossil fuels, as well as some of the other sources of energy that aren’t renewable are damaging the environment. For example mining for oil can destroy the forests of the planet. Hydraulic fracture (fracking) can cause earthquakes and pollute the water. The combustion of coal releases carbon dioxide, contributing to global warming.
Fortunately, some of the most promising sources of energy are sustainable and renewable. Wind, solar and hydropower could generate, for instance electricity without having to dig up new sources.
Other sustainable energy sources are emerging, including the wave and tidal power. To be used on an enormous scale, these technologies need to have effective https://leonardogiombini.it/2021/07/13/generated-post-2 distribution networks. This requires the use non-renewable energy sources to construct these networks. Therefore, these sources aren’t sufficient to meet the majority of our energy needs. But it’s important keep in mind that costs for renewable energy equipment have dropped significantly over the last couple of years, and efficiency is rising rapidly.