After all, do you know how durable a solar panel is?
The useful life of a solar panel is at least 25 years, with a minimum generation efficiency of 80% over the original and standard useful life guaranteed by the best manufacturers of photovoltaic panels, but It can easily pass 30 years of use with good periodic maintenance.
There are many reasons to be concerned about the durability of your solar panel. After all, we are talking about a team that will be installed on your roof and will be responsible for producing your own electric power.
Today we are going to know the characteristics of solar panels to know the real durability and efficiency of this technology.
We will also talk about the maintenance required and the size of panel you need for your installation.
The Truth About Solar Panel Sustainability.
Did you know that a solar panel is able to withstand the impact of a hailstorm?
As its work is carried out outdoors, the technology of solar photovoltaic panels is developed for durability of several years.
For this, the plates must be manufactured according to international standards which guarantee their high quality and resistance.
The solar panel: composition and durability
But above all, we must understand that when we talk about solar panels, we are talking about all the connected photovoltaic cells.
Learn all about the solar panel (photovoltaic module) here.
As can be seen, the main component of a solar panel is its group of photovoltaic cells connected in series.
However, due to the extreme fragility of cells, several layers of protection and isolation are required to ensure their long-term use.
Each card used in a solar panel is made up of:
- Tempered glass sheet.
- An organic material, such as EVA (ethylene vinyl acetate);
- Connected solar cells.
- Another sheet of EVA (or similar).
- A liner, which can be glass, PVC, or other polymers.
- Finally, the assembly will be framed (generally in anodized aluminum) and the connection boxes (cables and connectors) will be inserted for the series connection.
This guarantees the safety of the solar cells against shocks as well as their thermal insulation.
In addition to hail, a solar panel is also resistant to various weather conditions, such as the force of the wind, the weight of snow, and extreme heat.
For this, its manufacture also includes quality tests that the solar panels must undergo.
Efficiency of solar panels.
But it’s not just the physical strength of the solar panel that’s involved in its durability.
There is also the issue of the loss of efficiency of solar cells.
Like any other material, silicon degrades over the years in the sun and therefore loses its effectiveness.
In other words, its ability to transform sunlight into electrical energy.
Despite what it may seem, this annual loss is minimal, only 0.7% on average.
Photovoltaic panel warranty.
However, what matters in the end is the warranty given by the manufacturer.
The best brands offer a lifespan of 25 years with at least 80% of their initial generation, so you have to be vigilant.
In other words, an original 360 watt power module should, by warranty, generate at least 80% of that power for at least 25 years.
The warranty against manufacturing defects is 10 to 12 years and can be up to 20 to 25 years for higher quality PV modules.
Therefore, you should always keep all purchase or installation documentation in order to be able to use the warranty.
That is why our recommendation is to hire or buy solar energy companies that use high quality panels.
Not to mention that over the years, many manufacturers have been bought out, merged or even declared bankrupt.
Thus, the one who gives the guarantee to the buyer (you) is the final seller, who is responsible for the guarantees given to the customer.
As most of the quality panels are still imported, when buying a solar panel it is important to check if the company is represented in your country, so you will have less problems when claiming your rights. .
How many panels do I need for my solar installation?
A single module (solar panel) is not enough to generate all the energy consumed in a home, business or rural property.
Each module is capable of generating a certain amount of energy, stipulated by the manufacturer through tests carried out in the laboratory and with standard test conditions (STC).
In other words, a 360 Wp panel will generate this energy under climatic conditions similar to those reproduced in the laboratory.
Every home and every electrical consumption requires a certain number of panels to generate the necessary energy.
This is one of the reasons why you should turn to a specialist company, get a better project to ensure a quick and safe return on your investment.
Maintenance of photovoltaic panels.
The main maintenance of a solar panel is the periodic cleaning of the surface of its plates.
But this is only in the event that they are very dirty, which is not common, because they have a non-stick film that prevents the accumulation of dirt.
The recommended cleaning frequency is every 6 months.
In the case of dust, rainwater wins out.
However, in the event of contamination or bird droppings, cleaning is easy and only requires a water jet and a soft-bristled broom.
In addition, there is also the overhaul of the mechanical system, which must also be carried out every 6 months by trained technical professionals. All joints in the solar panel support structure are checked to see if they are intact.
Plates are also assessed for cracks in the glass or defects in the metal structure that may affect the seal of the panel.
If the PV module fails, repair is usually not an option, so you will likely need to replace the panel.
This can happen for a number of reasons, such as seepage inside the module, failure (break or crack) of the glass surface, burnt electrical contacts, or problems with the metal frame.
These are very rare cases due to the great resistance of the plates.
The important thing is to keep the solar panel checked to ensure that the system is still operating at high performance.
How much does a solar panel cost?
The time has come that everyone wants to know: but how much does it cost?
The answer is: cheaper than you think.
Even with all this modern technology, installing a photovoltaic system becomes cheaper and more affordable.
However, the answer is not the same in all cases, each project is unique depending on the power consumption of the type of installation.