
Since the last month of October 2018 was approved in the Council of Ministers self-consumption with solar panels without “sun tax”, there are many questions and questions you may have about the use of solar panels for home and also the advantages .
SOLAR HOME PANELS
In this article we try to address precisely that second point that refers to the pros and cons of solar energy for your home, your business … etc.
Solar panels for home, how do they differ from the rest ?:
In case you are not very knowledgeable about the photovoltaic sector, the first thing you should know is that there is no difference between solar panels for a home than those used in large solar installations. The same types of photovoltaic plates are used.
Although it is true that there are models of solar panels designed for homes that are what we call “Black”.
That is, many homes, for an aesthetic theme (no one likes our house to look “ugly”), install solar energy systems for homes with panels that are totally black. An example of a solar panel designed for a house would be the following:
As you can see, they are totally black panels, which give an aspect of excellence to the roof of your house as well as having a solar system for above average house, because we speak of a panel manufactured by SunPower, the most efficient and of the best performance in the world.
Therefore, the types of solar panels used in homes are the same as the rest of the facilities, with the exception of that type of all-black model that is manufactured specifically for homes and for photovoltaic installations that require architectural integration.
Solar plates for a house and its prices:
If there is something that is used as a rule to compare solar panels for a house, it is, above all, its price. What is a major mistake . Long-term performance and return on investment are much more important.
If the solar panel that we use for a home is not of good quality, the low price will end up being, in reality, very expensive.
These are some aspects more important than the price, which must be taken into account before asking for prices for solar panels for homes:
Efficiency of the solar panel that we want to install:
The efficiency will be worth to us, the more efficient the solar panel of your house, obtain more kilowatt-hours of production with less occupied surface.
And as you’ll be imagining, the most efficient panels, that is, those that allow you to “squeeze” the maximum surface of the roof of your house, are the best quality and also the most expensive.
Because roofing limitations are often a barrier to meeting the growing energy demands of homeowners, the efficiency of solar panels is key to maximizing the space available in your cottage, for example.
That is, the most efficient panels produce more kilowatt-hours, with a higher return on investment.
In addition to this, an added advantage for installers of solar panels: the use of modules with greater efficiency and performance implies that fewer modules are needed in general, thus reducing labor costs.
Another key factor – The temperature coefficient
The nominal power, which is in its technical sheet, of a solar panel is measured at 25ºC and the power begins to decrease as the temperature of the cell exceeds that 25ºC.
As the amount of power lost above 25 ° C is directly related to the temperature coefficient of the module. The higher the temperature of the panel rises from those 25ºC, the less that solar panel will produce.
This is why the temperature coefficient of a solar panel is so important:
The lower the temperature coefficient, the better the module’s performance as the temperature increases.
This is important in all regions, not only in hot climates, but especially in countries such as Spain and Portugal. The reason is that when the sun shines, the roof temperatures of your home can easily exceed 25ºC, even with ambient temperatures below 15ºC.
Imagine almost anywhere in Spain, where it is easy to reach 25-35ºC of ambient temperature almost 6 months a year … the temperature of the solar panel can go perfectly to 50ºC or more in central hours.
The guarantee is essential if you want to have solar panels in your house without worries:
Sometimes it is difficult to quantify the value of the guarantee of a solar panel. The fact that a company offers a product warranty for 25 years does not guarantee that it will be here to fulfill it, that is something obvious.
But for an investment that we know that, at least, should last 25 years, an installer or a homeowner, they must choose a manufacturer that is financially sound, stable and has a long reputation for the quality of its products and service. to the client.
The guarantee of performance is also important, almost more than the product. Think that the difference of a guarantee of production at 25 years of 80% (which is what usually give almost all manufacturers) and 90% (only manufacturers such as Panasonic or SunPower offer), can be thousands of euros of difference in savings.
Price of SOLAR PANELS FOR HOUSE
It’s the million dollar question. Everyone wants to know how much solar panels cost to see if they are interested.
The problem is that they ask at random, like someone who asks you how you are going to Madrid. Before considering this issue you have to define what you want to achieve with your solar photovoltaic solar energy installation, since it is not the same to supply the needs of a house, an isolated house without a network connection or our usual home.
Nor can it be compared to serve as support with being the main source of energy.