Renewable energies What are they and why use them?

Renewable energies What are they and why use them?

It is necessary to understand the rationale for using renewable energy, especially at a time when the planet is suffering – to a greater extent – from the wear and tear of meeting our demands for raw materials.

On the other hand, with the use of traditional energy sources, pollution from carbon dioxide emissions is increasing every year.

Replacing traditional energies with renewable energies is environmentally friendly, as it does away with the large and polluting greenhouse gas emissions.

Changing the energy we use on a daily basis is only one of the steps that must be taken to make a significant contribution to reducing pollution.

Join the use of renewable or alternative energies in your home by getting to know each of them and seeing which one is feasible for your lifestyle.

what are renewable energies?

¿Qué son las energías renovables?

Renewable energies are the type of energy that has a natural origin and is infinite.

Renewable energies are said to be infinite or inexhaustible, because they are able to regenerate naturally and because they have a large amount of contained energy.

No fuel is used in their production, so they do not produce pollutants that end up in the environment.

Types of renewable energies

Tipos de energías renovables

Generally, renewableenergy types come from the sun, water, biomass or wind.

These natural resources are transformed with the help of tools that convert them into electricity.

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Some of the types of alternative energies that are frequently used for conversion into electrical energy are:

Solar energy

Solar energy is obtained from the radiation emitted by the sun. Solar energy is divided into three types: thermal, photovoltaic and passive.

Solar thermal energy is obtained by heating a substance – usually water – in a solar thermal power plant with the help of solar radiation.

This process produces the energy required to drive the alternators that generate electricity.

Photovoltaic solar energy transforms solar energy into electrical energy by means of a machine that transports the sun’s radiation, called a photovoltaic.

Finally, passive solar energy is produced by using solar radiation as a means of obtaining energy, but without going through a transformation process.

Hydroelectric power

Hydroelectric power is produced in power stations where water falls through a dam with great speed and force.

The power of the falling water transmits its energy to hydraulic turbines that share the energy they produce with generators that convert it into electricity.

Wind energy

Wind energy is produced by using the energy of the wind to convert it into electrical energy.

This type of energy is developed according to the types of wind turbines used to produce electricity.

The first is traditional land-based energy in which large windmillsare built to transform the energy of air currents into electrical energy.

The other type of energy is offshore wind power, which uses the air currents produced in the sea with great force and speed.


Biomass is an alternative energy source in which the organic waste that people deposit in their respective recycling bins is burned in a combustion process.

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Geothermal energy

Geothermal energy is obtained by harnessing the heat emitted from the Earth’s core through power plants that are located in reservoir areas.

The deposits from which geothermal energy is produced are hot water or dry deposits.

Advantages of using renewable energies

Ventajas del uso de las energías renovables

Renewable or alternative energies have great advantages for the environment and for the economy of a country.

As they are energies that are obtained from natural sources such as air, sun or water, they are easily regenerated.

Moreover, they are easy to use when transforming energy into electricity.

what are their advantages and the characteristics they have in common? Read on to find out.

They generate sources of employment

Power plants and industries in which energy is transformed need people to work in the construction process.

In addition, they also require people to carry out daily maintenance and to operate each of the areas of their operation.

Clean and environmentally safe

None of the renewable energies are used or transformed, so they do not emit greenhousegases.

They also emit only a small amount of carbon dioxide during the construction of some projects.

Importance of the use of renewable energies and their impact on the environment

Importancia del uso de las energías renovables y su impacto en el medio ambiente

Hydroelectric power is the most widely used energy source in the world. It is followed by wind energy, solar energy and photovoltaic solar energy.

This is a sign of the work that countries are doing to contribute to reducing environmental pollution and meeting sustainable development goals.

The use of renewable energy will help to drastically reduce emissions of greenhouse gases such as carbon dioxide.

So what are you waiting for to start using renewable energy? Let’s do it before it’s too late for the planet.

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