The world is dependent on a range of energy sources. In 2018, fossil fuels, such as oil, gas and coal, were responsible for over 81 percent of the energy consumed. Renewables, like wind, solar power, biomass and hydroelectricity, account for 14 percent. Nuclear energy accounts for another five percent. Different countries use different mixes of energy sources, in order to balance environmental and economic requirements.

Energy is present in nature in many forms, including sunlight, wind, waves, ocean and many more. These sources of energy are transformed into more convenient energy forms, such as electricity or heat, once they are harnessed. These sources of energy become non-renewable sources of energy when they are exhausted.

The environment is harmed due to a wide range of fossil fuels in addition to other sources of energy that are not renewable. For instance mining for oil can destroy the forests of the planet. Hydraulic fracturing (fracking) can trigger earthquakes and pollute the water. The combustion of coal you could try this out releases carbon dioxide, which contributes to global warming.

Fortunately some of the most promising energy sources are renewable and sustainable. Solar, wind and hydropower could, for example, generate electricity without the need to dig up new sources.

Tidal and Wave Power are two more sustainable energy sources that are gaining popularity. However, in order to be used on a large scale they must have efficient distribution networks. These must be built which will require the use of non-renewable energy. In the end, these sources are not yet sufficient to meet the majority of our energy requirements. But it’s important keep in mind that the costs for renewable energy equipment have dropped drastically over the last few years, and efficiency is growing rapidly.