Solar energy and self-consumption: 5 hoaxes solved

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Solar energy and self-consumption: 5 hoaxes solved

Solar energy and self-consumption: 5 hoaxes solved


Self-consumption Saving Rush 10


The world of solar energy and self-consumption, unfortunately. Is still unknown to many people and this creates false legends, truths and lies that can cast doubt on its viability or create false preconceptions of what it really is.

It is easy that you have come across phrases such as "solar panels do not work at night", that is why we are going to solve some of these myths and we will see how they try to move our focus away from an alternative so beneficial for you and for the environment such as Solar energy.

1. Electric self-consumption with solar panels is not profitable

Opting for self-consumption is profitable. The initial investment is somewhat high since it includes the solar panels and the complete installation, however in the long term it ends up being very positive for the family economy to have this system in place.

Over the years the energy and economic savings are remarkable. The savings will vary depending on the capacity to generate this electricity, since a very sunny area of ​​Spain is not the same as one less accustomed to the sun. What is certain is that with Lumisa you can save up to almost 13,000 euros in a decade thanks to our solar rate system. Thus, the amortization comes from the fourth year of some plates that have a useful life of 25.

In addition, you can benefit from the extra energy that you produce and do not use. And to top it all, there are grants that can save you between 40 and 50% on the initial investment and many other advantages!

2. If you choose self-consumption, you are obliged to disassociate yourself from Red Eléctrica

Fake. In fact, from Lumisa we recommend our clients not to dissociate themselves from Red Eléctrica. You will guarantee your consumption in the event of a supply cut and you will be able to take advantage of energy surpluses and benefit from compensation on your electricity bill.

3. Solar panels only work if it's sunny

Saying that would be similar to stating that we don't burn our skin if it's cloudy on a summer beach day. Solar panels work even these days, although it is true that their performance drops between 10 and 25% depending on various determinants, such as the quality of sunlight that arrives or the type of installation.

There are solar batteries to store the excess energy we were talking about, because at night the panels are out of service. Thanks to this system you will be able to take advantage of the extra energy that you have generated with the photovoltaic system at no additional cost.

4. More energy is invested in the construction of solar panels than what they then contribute

Solar panels can even be manufactured in an artisanal way, although obviously they will not generate the same energy as industrial ones designed exactly to make their use profitable. Most of the energy is used to manufacture the cells, which are normally made of crystalline silicon, although the University of La Rioja has started working with titanium cells, which have been shown to be more efficient. However, this energy is calculated to be amortized in Spain from the second year of use of the photovoltaic solar system thanks to its climatic conditions, a time that will be reduced as the latest advances in its manufacture are implemented.

5. The photovoltaic solar installation requires a lot of maintenance

Obviously, solar panels need a certain maintenance so that they can work to their full potential, although the rainwater itself helps to remove the layer of dirt. Keep in mind that they are facilities prepared to be outdoors so they are designed to withstand adverse conditions, such as snow or even hail. Besides, you have to check batterieschargerinverter and wiring more regularly, although it is not a complicated process and, in case something has to be touched up, it does not entail many problems.

It is true that a thorough cleaning of the plates is recommended at least a couple of times a year with soap and water, but always be careful not to scratch the glass.


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