What is renewable energy?

What is renewable energy?

Renewable energy sources are considered vital in our current era, as they depend on sustainable natural sources such as sun, wind and water, and provide a clean and renewable alternative toconventional fuels; That is, they are sources that have a positive impact on the environment and climate, as they reduce greenhouse gas emissions and improve air quality, thus reducing pollutionand climate change.

 In addition, these renewable sources allow us to benefit from energy in new and innovative ways, and they also enhance our local independence in theenergy sector, and reduce their cost in the long term; Therefore, the use of renewable sources is an important goal to achieve sustainable development and preserve our planet for us and for future generations. The traditional question here is: What is the definition of renewable energy?

Definition of renewable energy

Renewable energy is produced from natural sources that are renewed at a rate that exceeds the rate of their consumption. Sunlight, for example, is one of the sources that is constantly renewed. These renewable sources are characterized by their availability everywhere around us, and unlike them, we findfossil fuels – such as coal and gas – a non-renewable source, and its formation takes hundreds of millions of years, in addition to causing an increase in greenhouse gas emissions such as carbon dioxide.

As for the emissions of renewable energy generation, they are much lower than that of the energy resulting from burning fossil fuels. This is why the shift from fossil fuels – which currently represent the bulk of emissions – to renewable energy is considered necessary in the face of the climate crisis. Not only that, but we can face otherdevelopment problems, as renewable energy can provide more environmentally friendly jobs than before, in addition to the diversity of its sources.

The most important renewable energy sources

• Solar Energy

Solar energy is the most abundant source of energy and can be generated even on cloudy days. Solar energy technologies can provide heat, cooling, natural lighting, electricity, and fuel for a range of uses, as these technologies convertsunlight into electrical energy, whether through solar panels, or through mirrors on which sunlight collects.

The cost of manufacturing solar panels has witnessed a significant decline in the past decade, making solar energy available to everyone and often at the lowest cost. In addition,Solar panels can be used for a period of approximately 30 years, and their quality varies depending on the type of materials used in their manufacture.

• Wind Energy

The benefit from wind energy is through the movement of the wind. By using large turbines installed on land, in fresh water, or in the sea, we can extract sustainable energy from the wind. Wind energy has been used for thousands of years, butWind energy technologiesonshore and offshore have developed in recent years, to generate large amounts of electricity using larger turbines and larger rotating shafts.

Although wind speeds vary greatly depending on their location, the global technical potential for wind energy exceeds the production of electricity worldwide, and there are technological capabilities in most regions of the world to significantly enhance the use of wind energy.

Therefore, there are many places in the world that enjoy strong wind speeds. Despite this, the best sites for generating wind energy may be – in some cases – remote and difficult to reach, but they provide enormous capabilities to be exploited in many sectors.

• Geothermal Energy

is a renewable energy source, found in the ground, where this type ofclean energy constitutes the temperature of the Earth’s interior. This renewable type of energy can generate enough electricity to cover the world’s need for hundreds of years to come, but it has high construction costs. This is because it requires digging to great depths, in addition to requiring many pipes to extract it.

• Hydroelectricity

Hydroelectric power uses the power of water flowing from higher to lower regions to generate electricity, and can be generated from water reservoirs and rivers. Hydropower storage plants rely on water stored in reservoirs. Hydroelectric reservoirs are used for many purposes, including: providing drinking water and irrigation – combating floods and droughts – providing water transportation – producing electrical energy; Therefore, it is considered the largest renewable energy source in theelectricity sector.

In conclusion, we once again emphasize the importance of renewable energy sources, as they are vital in our current era. Because it relies on sustainable natural sources such as sun, wind, and water, it provides a clean alternative to fossil fuels, and it contributes to making our world sustainable and green. Hence,Earth Guards Magazine calls for the use of renewable energy sources; So that we can achieve the Sustainable Development Goals (SDGs), and preserve our planet for us and for future generations.