The world has a myriad of energy sources. Fossil fuels–including natural gas, petroleum and coal accounted for more than 80 percent of the energy consumed in 2018. Renewables such as wind power, solar energy biomass, hydroelectricity, and wind power are responsible for 14 percent. Nuclear energy accounts for another 5%. Different countries have different types of energy sources, in order to balance the environmental aspects with economics.

Nature’s energy can be found in a variety of forms such as wind, sun, waves and ocean. When harnessed and transformed into more practical forms of energy, like heat or electricity, they are known as primary sources. Once these energies are exhausted, they are nonrenewable energy sources.

The environment is damaged by a variety of fossil fuels and also other non-renewable sources of energy. For instance, mining for oil can degrade the world’s forests. Hydraulic fracture (fracking) can trigger earthquakes and pollute the water. Carbon dioxide is released when coal is burnt which contributes to global warming.

Fortunately, a majority of the most promising sources of energy are sustainable and renewable. Hydropower, solar power and wind for instance, are able to produce electricity without the need to search for new sources.

Other renewable energy sources are emerging, such as waves and tidal power. However, in order to be utilized on a large scale they must have effective distribution networks. They need to be constructed, which requires the use of non-renewable energy sources. Therefore, these sources aren’t able to provide the bulk of our energy needs. But it’s important keep in mind that costs for renewable energy equipment have decreased dramatically over the past few years, and efficiency is growing quickly.

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