Advantages and disadvantages of renewable energies pdf
3.2. Renewable energies: technology, economics, evolution and integration into the Electricity SystemEnergy is classified as renewable and non-renewable according to its capacity for renewal. A “renewable resource” is defined as one that does not run out with its use, because it returns to its original state after use or regenerates at a rate greater than or equal to the rate at which it is diminished by its use. According to this definition, it is true that some renewable resources may cease to be renewable if their rate of utilization is so high that their total renewal is prevented; however, some of these renewable resources can be classified as perpetual, since their depletion is not possible no matter how intensively they are used. Normally, the use of a renewable resource or energy has the intrinsic characteristic of producing a much lower impact on the environment compared to the use or transformation of non-renewable energy. The use of renewable resources or energy has the intrinsic characteristic of producing a much lower impact on the environment compared to the use or transformation of non-renewable energy.
Renewable resources or energy. Characterization and technologies. For illustrative purposes, some of the renewable resources currently used for the production of renewable energy are: water, biomass, solar radiation, wind. In this way (see Technologies and costs of electricity generation):
Advantages and disadvantages of renewable energies
The so-called renewable energy sources (sun, wind and water) are those that can be used permanently because they are inexhaustible, unlike non-renewable sources (oil or coal).Tags: From an environmental point of view, we can speak of the existence of two types of energy sources: renewable and non-renewable.
Among the types of renewable or non-depletable energy sources are: solar energy, wind energy, hydroelectric energy, biomass and biofuels, geothermal energy and energy generated by waves, tides and ocean currents.
It is the energy obtained directly from the sun (which is, at the same time, the source of all renewable energies). Depending on the mechanism used, heat or electricity can be obtained.
Low-power wind power installations (as well as photovoltaic solar energy installations) enable any consumer to generate his own electricity, i.e. to generate his own electricity.
What are renewable energies?
The use of renewable energy is far from being able to displace the use of energy sources from fossil fuels, since for centuries companies, machinery, the supply of petroleum products, etc., have covered a large part of the world’s energy needs.
But do you know how dependent we are on non-renewable energy? The drive of industry dates back to the invention of the steam engine, through changes to the creation of vehicles that run on gasoline or diesel. In fact, today’s stoves run on electricity, but the use of gas has not been neglected.
Among the advantages and disadvantages of the use of fossil fuels in the generation of electric energy, it plays a decisive role that previously a study of the social, economic and environmental impact is carried out, in addition to defining the conditions of its extraction and sale, thus avoiding unnecessary environmental impacts.
Non-renewable energies have moved the world for decades, but they are no longer fashionable. Their use is in decline, clean energies are on the rise and it is no longer just a question of ecology or commitment to the environment.
There are also non-renewable energy sources that do not have a fossil origin. Nuclear energy has been the most widely used since the opening of the first power plant in the former Soviet Union in 1954. Elements such as uranium release a large amount of energy when their atoms split (nuclear fission).
Most electricity has been, and indeed still is, generated from fossil fuels. The two main non-renewable energy sources used for electricity generation are coal and natural gas.
In the United States, for example, 27.4% of electrical energy is produced from coal and 35.1% is produced from natural gas. In total, putting together also the minimal contribution of oil and other gases in that generation, 63.5% of energy, in 2018, came from fossil fuels.