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The world has a myriad of energy sources. In 2018 fossil fuels like gas, oil and coal, comprised over 81 percent of the energy consumed. Renewables such as solar energy, wind power biomass, hydroelectricity, and biomass account for 14 percent. Nuclear energy contributes another 5 percent. Different countries employ different combinations of energy sources, while balancing the needs of the economy with environmental concerns.
Energy is found in nature in many forms, including sunlight, wind, waves, ocean and more. These sources of energy transform into more efficient energy forms, such as heat or electricity, when they are harnessed. When those energies are exhausted, they are non-renewable energy sources.
The environment is harmed by many fossil fuels along with other non-renewable sources of energy. For instance mining for oil can destroy the forests of the planet. Hydraulic fracture (fracking) can cause earthquakes as well as water pollution. 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. Solar, wind, and hydropower can, for example, generate electricity without the need to dig up new sources.
Tidal and Wave Power are two other renewable energy sources that are gaining popularity. However, in order to be utilized at a large scale, these technologies must have effective distribution networks. This requires the use of non-renewable energy sources to build these networks. These sources aren’t able to fulfill the majority of our energy requirements. Still, it’s important to keep in mind that prices for renewable energy equipment have dropped drastically over the last few years, and their efficiency is increasing rapidly.