Let’s talk about renewable energies as those natural and inexhaustible sources of energy, or at least of great abundance and whose production and consumption do not cause a shortage or environmental damage.

By using these energy sources we do not have to worry about the negative environmental impact due to the depletion or abuse of their use.

Nature provides us with many renewable energy sources, and each one has different uses and characteristics.

The facilities for producing these energies are usually located in parks or power plants as they require specific dimensions plus installation cost. 

Among the best known are solar photovoltaic, thermal or biomass and wind.

Different types of non-renewable energy sources

Non-renewable energy sources are characterized by:

  • Their exploitation and usage cause pollution, since they generate emissions and waste.
  • They are limited energy sources, which is why they are also known as exhaustible energy sources. 
  • These sources make us dependent on exterior elements, as they are not “local” sources.
  • Among the types of non-renewable or exhaustible energy sources are fossil fuels (coal, oil, natural gas) or nuclear energy.

Different types of renewable energy sources

  • Their use has very low impact on the environment. No waste is produced because of its usage.
  • These are unlimited-energy-sources; that is why they are also known as inexhaustible energy sources since they do not run out with their consumption.
  • They are natural and self-sufficient energy sources.
  • Among the types of renewable or non- exhaustible energy sources are solar energy, wind energy, hydroelectric energy, biomass and biofuels, geothermal energy, and energy generated by waves, tides, and ocean currents.

Non-renewable energies replaced by clean, abundant energies

Gradually, renewable energies are replacing the entire fossil fuel or dirty energy industry in the electricity sector. As a result, human carbon emissions are reduced, along with preventing other types of pollution.

You should know that not all renewable energy sources are useful for the environment and that not all of them represent a sustainable option for the development and production of benefits.

Non-renewable energy

Fossil fuels are a representation of what waste or non-renewable energies are; oil, gas or coals are these sources of energy that pollute the environment. Non-renewable energy sources are limited or take a long time to replenish.

Eco-friendly movements come into conflict because of the risks involved in their production, the fact that they may not provide utility to us, and the high cost of producing them.

Non-renewable energy sources are also more common and more abundant in some countries, such as Russia or areas of the Persian Gulf, and this generates a lot of instability and uncertainty in the price we pay for this energy, which, on top of that, is waste.

On the other hand, all countries have access to sunlight and wind. Giving priority to non-renewable energies can also strengthen national security by reducing a country’s dependence on fossil fuel-rich countries as a source of exports.

What are renewable energy sources?

  • Solar energy

This type of energy comes directly from the sun (which is, at the same time, the source of all renewable energies). Depending on the mechanism used, you can produce heat or electricity:

  • Photovoltaic solar energy: it is the process of converting sunlight into electricity. The electric current produced can be directly consumed, stored in batteries or accumulators, or adapted for incorporation into the electricity grid.
  • Thermal solar energy: uses the energy received from the sun to produce heat, which can then be used for air-conditioning, for producing hot water, or for industrial applications.
  • Solar thermoelectric energy: in solar thermal power plants, fluid is heated to generate pressurized steam that produces electricity that can be fed into the electricity grid.

Self-consumption is one of the options offered by photovoltaic solar energy and small wind power. 

The consumption of the energy produced by the renewable energy installation is made possible at times when its use is required in buildings and homes.

When there is no electricity consumption, the energy can be poured into the grid when it is not needed.

Other types of renewable energy
  • Geothermal energy

It is a type of renewable energy that stores the earth’s interior in the form of heat (an inexhaustible and non-polluting energy source).

  • Hydroelectric or hydraulic energy

It consists of harnessing the potential energy of water to produce electricity.

  • Marine energy

The force of the sea (waves, tides, ocean currents, thermal gradients) is used to generate energy.

  • Wind energy.

Wind energy can be harnessed using wind turbines or windmills. The wind turbine is the main element of this renewable energy system, the most common being the one that converts the energy of air movement into electrical energy that is finally transmitted to the electrical grid.

There are thousands of options for renewable energy sources, so it is necessary to seek an energy mix to gradually replace waste energies, to move towards a future with fewer emissions and more respect for the environment.