The expansion and evangelization of renewable energy technologies throughout the world has begun to create employment opportunities and a different point of view when it comes to energy consumption.
More and more countries manufacture, trade and install renewable energy technologies to become eco-friendly and updated places, increasing the employment rate and bringing economic benefits.
Therefore, knowing and understanding its operation is acquiring current and vital information. Then we will give you valuable information and find out what this is about
What is renewable energy?
The most common definition would be that renewable energy is one that can be generated from natural processes that can be replenished continuously without depleting them. With these natural processes we refer to sunlight, geothermal heat, tides, wind, water and various forms of biomass. As specified this energy cannot be depleted and therefore can be constantly renewed, hence its name
It is well known that this type of energy is usually considered a new technology, however what concerns the use of nature is something that has been used for many years for heating, transportation, lighting and more. Since time immemorial, the wind has driven ships and made them navigate the seas and windmills have been used to grind grain. On the other hand, the sun has also done its job, has provided heat during the day and thus has helped to light fires. However, in the last 400 years the human has decided to use more and more other sources of energy, such as fractured gas, especially for how cheap they are.
But now things have begun to change, little by little, the most innovative and least expensive ways of capturing and retaining wind and solar energy, they have become much more popular and a more important source of energy, and this shows if we realize that now it is the eighth part of the US generation who use it. Its expansion is happening on a small and large scale, ranging from solar panels on the roof of homes which can also sell energy to the grid to giant wind farms that are located on the high seas. Even the use of this energy is reported by entire rural communities since they depend on it for their daily life.
This is also called dirty energy, fossil fuels are included here, whether petroleum, gas and coal. This type of energy is only available in limited quantities and not only that, but it takes a lot of time to be replenished. When pumping gas at the station, we are using a finite refined crude oil resource which has been around for millions of years.
Another unfavorable characteristic of this type of energy is that they are found in a specific part of the world, so they are more abundant in some countries than in others.
Types of Renewable Energy Sources
- Solar energy: solar energy has never been wasted; humans have always known how to bear fruit. Currently, the sun’s rays are used in many ways, such as heating homes and businesses, water, or using power devices.
This type of energy is harnessed by solar or photovoltaic (PV) cells which are made of silicon or any other material, which convert sunlight directly into electricity. Usually the solar systems that can be distributed to generate electricity locally for homes and businesses, and can be through roof panels or as it can happen, through community projects that feed entire neighborhoods.
The existence of solar farms is vital for the maintenance of this type of energy, can generate energy for thousands of homes, and use mirrors to concentrate sunlight on acres of solar cells. These floating solar farms, also called “photovoltaic energy”, can be an effective use of wastewater facilities and also of bodies of water that may not be ecologically sensitive.
Also called hydroelectric power or hydroelectricity, it is defined as this form of energy that harnesses the power of moving water to produce renewable power, because of the water flowing over a waterfall. People have also made use of this type of force, just as they have done with solar energy. For example, many years ago people in Greece used running water in order to convert flour into ground wheat, with their mill wheel.
Normally, hydroelectric plants usually have a water tank, a valve to control the amount of water that is capable of leaving the tank and finally an outlet through which water can descend.
Then, just before the water spills over the top of a dam, it gains potential energy.
This potential energy becomes kinetic energy while the water is going downhill. The water can be used to spin the blades of a turbine which is responsible for generating electricity and is consequently distributed to the customers of the power plant.
This type of energy is based on high turbines of more than 60 meters. Its operation is basic and simple, the wind spins the blades that these turbines have, and they spin a shaft that is connected to a generator that can produce electricity.
There are different types of wind turbines; the larger ones can generate so much electricity that it could supply 600 homes for one year.
You can find wind farms that have dozens of turbines lined up in windy places and serve as an impressive energy source. Sometimes in homes they have small turbines installed in a backyard which produces electricity to the home.
This is an energy that is still in development and is based on the use of the tides and also the waves, because the ocean will always be governed by the gravity of the moon, its power can be harnessed. This type of energy will depend on dam-like structures and also on devices anchored at the bottom of the ocean.
Renewable energy pros and cons
Renewable energy is an important issue today, the demand for energy is increasing and everything is becoming more expensive.
We know that non-renewable sources are limited and of course they do not respect the environment, therefore, learning what this type of energy is about, both its advantages and disadvantages, is extremely important.
- There is a continuous source of energy; it is one of the most important attractions since non-renewable energy has an income problem.
- Low green gas emissions
- It is much cheaper and more profitable than non-renewable energy, since its duration is much longer
- It is eco friendly
- This type of energy is vulnerable to the weather and any climatic factor that can stand between the production of energy and the environment itself.
Modifications such as heavy rain or lack of sufficient wind can reduce energy production and affect it. Because of this, energy consumption would have to be reduced to take care of this type of setback.
- It may not be available in all areas since its raw material depends completely on a good location, so you must create an infrastructure that can transport energy
The use of renewable energy is a step towards the future that is totally necessary to move forward as a world society and community.