In the current market there are different types of photovoltaic solar panels, but how to know which is the best solar anel.
BEST PHOTOVOLTAIC SOLAR PANELS
Because solar panels must last a long time, it is important that you only invest in the best solar panels. You can read below what are the best solar panels for your home.
Number of solar panels and prices
Before seeing the best solar panels, it is advisable to first obtain an indication of the average costs. The prices of solar panels depend among other things on:
- The power
- the number of solar panels
Most solar panels have a capacity of 250 Wp (Watt peak). You can also choose solar panels of smaller capacity. Solar panels are cheaper to buy, but they also have lower performance.
When determining the amount of solar panels, it is advisable to adjust this as best as possible to your energy consumption. If you generate too much energy with your solar panels, you can return this energy to the power grid. You will be reimbursed for this.
However, this refund is not so high as to make it attractive. Therefore, always try to generate enough energy or a little less with your solar panels to cover your own consumption. If you lack solar energy, you can always supplement this with the “regular” energy of your energy provider.
Below is a summary of the average energy consumption per household and how many solar panels you need to cover this consumption:
|# people from home
|Avg choose Annual consumption in kWh.
|# Wp to provide (kWh / 0.85)
|# panels (250 Wp per panel)
|Avg price of solar panels (including inverter and installation)
|Avgahorro per year
Do you have a 2-person home and are looking for the best solar panels? Then you can opt for 16 solar panels with a capacity of 250 Wp. Then you can fully satisfy your own energy consumption.
You pay an average of € 7,600 for such solar installation. An important investment, but it is very likely that you have recovered this money in 10 years. You can save up to € 782 a year with these solar panels.
Do you want to recover your solar panels even faster? Then, lower the purchase price of your solar panels by comparing the quotes of different suppliers.
By comparing quotes, you can easily find the cheapest specialist and can save up to 40% on the purchase price.
Types of solar panels
The best solar panels may vary depending on the situation. You can choose between 3 types of solar panels:
- monocrystalline solar panels
- polycrystalline solar panels
- thin film solar panels
Most people opt for mono or polycrystalline solar panels. The monocrystalline panel offers a slightly higher efficiency, but it is also a bit more expensive to buy than the polycrystalline solar panel.
However, the differences in returns have become increasingly smaller in recent years. As for appearance, there are still clear differences.
For example, monocrystalline solar panels have a uniform black color and the polycrystalline solar panels have a blue / purple color with a kind of pattern of broken fragments.
Thin film solar panels are on the rise. These solar panels are cheap to buy. However, the efficiency of this type of solar panels is still much lower. However, it is expected that the efficiency of thin-film solar panels will continue to increase in the coming years.
If you have chosen the amount of solar panels and the type of solar panels, it is time to take a look at the origin of your solar panels. Because solar panels are on the rise, they are produced all over the world. For example, you can opt for solar panels for solar panels in Europe,
Asia or America. The differences in the quality of solar panels are not so related to the continent, but to the manufacturer. Preferably, choose a manufacturer that has existed for at least 10 years.
Because the manufacturer is active for longer, it is more likely to guarantee the quality of the solar panels. In addition, with a manufacturer of this type has more certainty about the financial situation of the company. To facilitate the search for the best solar panels, you can also check the quality marks.
Finding the best solar panels is not without your help. To help consumers make the right decision, several quality labels have been created:
- TÜV quality mark
- IEC certificate
- CE Mark
- of ISO quality
TÜV quality mark
The TÜV quality brand is perhaps the most important quality brand for the best solar panels. The quality brand is used and trusted throughout the world. The quality mark is issued by a German inspection institute, which tests the solar panels and evaluates them to determine their quality. Only the best solar panels have the TÜV seal of quality.
Solar panels with an IEC certificate have been extensively tested for, among other things, reliability, durability and service life. The IEC certificate is a requirement for the sale of solar panels.
All solar panels sold in the Netherlands must have the CE mark. The CE mark indicates that the solar panel complies with all the requirements of European legislation.
of ISO quality
The ISO certificate does not say anything about the quality of the solar panels, but it says something about the manufacturer. Manufacturers that hold the ISO certificate meet strict quality requirements and are required to follow certain protocols during the production of solar panels to ensure quality. Therefore, during your search for the best solar panels, always check if the manufacturer of your solar panels is in possession of this certificate.
The guarantee plays an important role in the choice of the best solar panels. Of course, it is assumed that good quality solar panels do not decompose quickly, but if this happens, then a good warranty scheme is of great importance. We distinguish 3 types of guarantee:
- Factory warranty
- capital guarantee
The factory warranty applies to solar panels, including all parts and mounting materials. The guarantee is usually 10 years for solar panels and 5 years for investors.
If there is a problem with your solar panels within this period, you can claim the warranty from the installer. If this does not exist anymore, it is better to contact the manufacturer directly.
If mistakes were made during the installation of your solar panels, you can use the installation guarantee. Most installers use a warranty period of at least 2 years for this.
The power guarantee, also known as performance guarantee, is related to the performance of your solar panels. As your solar panels age, performance decreases.
This is a normal process that occurs even with the best solar panels. However, to prevent this performance from being too low, a capital guarantee has been created.
Because of this, he is entitled to a minimum return of 90% of the total assets after the first 10 years and this percentage is still 80% after 25 years.
The 10 most efficient solar panels on the market
Photovoltaic installations are increasingly common in the industrial sector because they allow lower operating costs, and therefore greater competitiveness, but the choice of inefficient solar panels can reduce the expectation of success.
Below we explain what to take into account when choosing and we give some examples of the most efficient solar panels on the market. For this we have taken into account the efficiency that brands offer, the years of product warranty and, most importantly, the price.
The first question that we have asked to determine the most efficient solar panels is which of them offers a higher performance according to the type of cell that form them. These cells can be monocrystalline, polycrystalline and amorphous.
The answer is that monocrystalline modules have a higher efficiency , since the internal structure of the cells is more uniform and, therefore, presents less resistance to electronic displacement. In addition monocrystalline type-n cells have an electronic structure that favors a better use of the received light, which increases its performance.
In addition monocrystalline type-n cells have an electronic structure that favors a better use of the received light, which increases its performance.
Tips to consider
Once established that monocrystalline modules offer superior efficiency, what advice should we take into account when buying?
It is advisable that the module is suitable for the installation in question. Therefore, it is necessary to correctly combine the voltage and power levels according to the equipment to which they are connected .
The purpose is to try to assemble the smallest number of solar panels possible (as long as it is technically and electrically feasible) as this will allow us to save on structure, assembly times, etc.
In addition, it is essential to properly choose solar panels, since a problem or defect in them means having to carry out complicated repairs (in some cases very expensive).
In most photovoltaic self-consumption installations, panels are installed on the roof of the property in question (homes, industries, shops, farms, etc.).
A defect in one or several modules supposes important setbacks for different reasons such as the replacement of the panel and the cost of the security measures to be implemented for the worker, as well as that of the machinery necessary for accessibility.
For all these reasons, it is recommended that the chosen photovoltaic module meets minimum quality standards that ensure the amortization of the installation in the expected time and in order to avoid all the problems that would arise in a possible corrective action, in most cases high cost. It is essential to have the certification seal approved by an accredited body (TÜV or similar).
Taking into account this, we will know if we need:
– modules of 36 cells (we could reach 150Wp (Watt / Peak), 18V Vmp (Voltage Maximum Power), approx 22,5V in Voc (open circuit voltage) Price range:. 0.64 – € 0.80 / Wp
– Modules of 60 cells (we could reach 300 Wp, 30V Vmp, 38V approx in Voc., Price range: 0.37 – 0.74 € / Wp
– Modules of 72 cells (we could reach 350 Wp, 36V Vmp, 44V approximately in Voc., Price range: 0.37 – 0.72 € / Wp
Price and performance of solar panels
Another issue that we have raised is the relationship between the price and performance of a photovoltaic module and its duration, that is, its real life.
Regarding the price / performance ratio, a solar panel generates an amount of energy during its useful life in a given installation, which will depend on its efficiency and the point of degradation it suffers.
This means that, if a module does not meet certain minimum requirements, it could decrease its production at a greater rate than that taken into account in the study phase of the project, assuming lower self-consumption ratios than initially estimated and that the amortization of the installation will trigger.
The higher the efficiency and the lower the annual degradation, the better the price / performance ratio will be . We will also have to take into account the prestige of the manufacturer, the highest peak power ratio per square meter (Wp / m2) and, of course, the type of panel.
The higher the efficiency and the lower the annual degradation, the better the price-performance ratio of a solar panel
Regarding its duration, the guarantee of current solar panels is 25-30 years for monocrystalline and 20-25 years for polycrystalline. It is also true that there are facilities that have been in operation since the 1980s and have been in operation for up to 30 and 40 years, so in general, the real life of solar panels is unknown.
The 10 most efficient solar panels on the market
The 10 most efficient solar panels on the market
Below we highlight the 10 highest quality solar panels on the market in terms of price / efficiency:
List classified by number of cells (60 and 72) and percentage of efficiency of each of the panels.