leonardo giombini e le energie rinnovabili

The world uses many different energy sources. Fossil-based fuels such as natural gas, oil, and coal–accounted for more than 81 percent of all energy consumed in 2018. Renewable energy sources, such as solar power, wind, hydroelectricity, and biomass, account for 14 percent. Nuclear energy is responsible for another 5%. Different countries employ different combinations of energy sources, while balancing economic needs with environmental concerns.

Nature’s energy comes in many forms including sun, wind waves, and ocean. When harnessed and transformed into more practical forms of energy, such as heat or electricity, these are called primary sources. These energy sources become non-renewable sources of energy when they are exhausted.

Many fossil fuels, as well as some of other energy sources that are not renewable are causing harm to the environment. Mining oil, for instance can devastate the forests of the earth. Fracking (hydraulic fracturing) can cause earthquakes and water pollution. The burning of coal releases carbon dioxide, contributing to global warming.

Fortunately that many of the most promising sources of energy are renewable and sustainable. Hydropower, solar power and wind for instance, can generate electricity without having to dig for new supplies.

Tidal and Wave Power are also renewable energy sources that are gaining popularity. To be used at a large-scale, these technologies require effective distribution networks. This requires the use non-renewable energy sources to construct these networks. These sources aren’t sufficient to provide the majority of our energy requirements. It’s vital to remember that the cost of renewable energy equipment have fallen dramatically in recent years and the efficiency is rising.