Knowing how solar panels work is the first step to delve fully into solar energy.

Many times we’ve talked about solar panels, but for some time now we have been receiving comments that made us a simple but interesting question: how solar panels work?


Before you begin to see how solar panels, which probably will have seen on the roofs of many buildings in your city, we have to speak a little solar energy work.

As you know, solar energy is that which emanates from the sun’s core. It occurs due to a nuclear fusion reaction and because of the intense gravity conditions to which is subject. The sun is composed primarily of hydrogen and under specific conditions is melted to produce helium.

This process releases huge amounts of energy, springing from the heart of the stars and travel through space for billions of years.

The land is close to the sun gets its energy and makes it in different ways, so that the atmosphere and magnetosphere filtered much of the harmful solar radiation, but let in lengths corresponding to the visible light and infrared, so that’s what we get is it’s light and heat.

An energy that has become one of the driving functions for life as we know it, as it promotes the most varied effects on the planet’s surface: among others, the winds, the formation of clouds and rain or climate change around the globe.

The man wanted to find and build the most diverse ways to harness this energy and convert them to support life on earth and that is why right now is being heavily optimized this technology to extract energy from the sun and turn it into energy for human use, such as electricity and hot water.



Speaking of solar energy as a renewable energy, we must also mention the fact of having transducers for converting various forms of natural energies in energy usable by man.

To transform solar energy into energy that can be applied to our daily lives, necesitarermos one photocell, and that is an electronic device that can transform light energy into electrical energy through the use of a process called the photoelectric effect.

The process is the light that comes in the form of photons, hits mainly built on a silicon surface (solar panels) and emits electrons emitted that-be capturados- produce an electric current.

Currently he is experimenting with photovoltaic cells double-sided – with the help of reflectantes- surfaces can double the efficiency expanding exposed to sunlight surface.

These cells are what are known as photovoltaic solar panels and employ complex and precise as such an advanced technology.

Of course, so far very few companies in the world have the capacity and technical resources to be able to produce them.



The operation of the solar panels are based on the photovoltaic effect, which occurs when properly treated on semiconductor materials, incident solar radiation to produce electricity, as I mentioned anterioremente.

At the moment it is exposed to solar radiation, different content in the light transmit their energy to electrons in semiconductor materials, then, can break the potential barrier of the pn junction, and exit the semiconductor and through an external circuit.

These photovoltaic cells are combined in many different ways to achieve both the desired voltage and power and thus be able to get that solar energy it is up becoming energy to consume.

Not surprisingly, we understand the smallest solar cell module semiconductor material with PN junction and also capable of producing electricity.

We must not forget at this point is called the photovoltaic panel on the set of cells possessing adequate support and coatings that protect from weather.

In another article we explain in detail the different types of solar panels in the world. You do not miss it if you want to know the different types of panels that can be found on the market.


The solar panels have several advantages that make a stronger alternative future.

First, the most obvious advantage is that they are able to transform sunlight into energy. It is therefore a fully energy renewable and inexhaustible.

On the other hand, it is a way to produce completely clean energy. Solar panels do not require chemical processes not need combustion. That is, they do not emit any pollutants into the atmosphere and do not contribute to climate change and the greenhouse effect.

Using solar panels would end the problem of waste storage. Fossil fuels take years to disappear, filled to overflowing landfills and contaminate the air, land and water. Not to mention the storage of waste resulting from nuclear energy.

With solar energy natural disasters such as those in nuclear power plants like Chernobyl or Fukushima and others that are repeated every so often, like oil spills that destroy coastal and marine ecosystems will be done.

Contribute to self-sufficiency. Solar panels allow, for example, access to electricity in areas where the power lines even arrives.

These panels can be installed on a large scale, to produce energy in large quantities, or as small home facilities to serve as backup power. The possibilities are endless.

Benefits solar panel

On the other hand, solar panels do not need a maintenance laborious and often have a lifespan of about 20 years.

It is an energy with much room for development. Its implementation is still low and you can still make a lot of progress. In this sense, it is a sector, renewable energy, providing more and more job opportunities and presumably create even more employment in the medium term.


The main disadvantage of solar panels is that solar energy is a little implanted energy and, above all, some supported by the big energy companies.

In some countries, including Spain can count, solar energy does not represent or 0.2% of total energy produced. Furthermore, the taxes and fees levied such facilities are too high for a person with average income can risk using solar energy.

Moreover, among the few disadvantages that may be cited it is that the panels need a particular location and position to operate at full capacity and are not as effective in areas where there is less sun.

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