Which solar panel is suitable to guarantee the financial viability of the photovoltaic installation?
A photovoltaic plant, installed in your company, should produce for more than 25 years. Therefore, your decision should be carefully made. Only with a solar panel of high quality and durability, you can guarantee and assure your investment. The financial return starts with the choice of the adequate equipments. Solar panels represent the greatest weight in an installation. Before going ahead with your photovoltaic plant, ask us about the key issues when choosing the most appropriate solar panel.
Certificates and guarantees of the solar panel allow to obtain orientation
The materials applied in the photovoltaic plant must comply with the highest quality standards, norms and certifications. Therefore, any reliable installation company must always present the technical sheets, guarantee certificates and origin of the solar panel. The solar panel has a guarantee against manufacturing defects (usually equal to or greater than 10 years), as well as power during its entire useful life (25 years). These warranties are provided directly by the manufacturers of solar panels, which is why it is of utmost importance that they are within the tier 1 listing of BNEF, thus ensuring that they are “bankable”. SOLVasto is able to advise and always guarantee the best choice of solar panels to use in your project.
What is the best solar panel technology?
There are basically two types of solar cells, which are used in the manufacture of solar panels: monocrystalline and polycrystalline. Both types are properly developed and proven, suitable for certain applications. Monocrystalline solar panels are the most efficient, becoming the best option for applications where there is little space. However, these panels have a higher cost when compared with monocrystalline solar panels.
The performance of the solar panel is determinant for the pay-back of your investment
The performance of the solar panel is one of the crucial factors to optimize the production of energy, and consequently lower the pay-back of the investment in your photovoltaic installation. All panels have a power tolerance, which should be within ±3 percent. The actual power of each solar panel can be verified by requesting the installation company the respective flash report. This is a report that unequivocally demonstrates the individual electrical characteristics of each panel at the output of the production line..
Do not risk losing power of the solar panel with the increase of its temperature
Another very important factor, to maintain a high yield, is the coefficient of power loss with the increase of temperature, especially in our country where the maximum temperatures are very high during the summer months. With low quality panels we can easily lose 20 percent of power with the increase in temperature. Thus, a low temperature coefficient ensures that your panel continues to produce well, even on the hottest days.
The 3 most powerful solar photovoltaic panels
According to the current offer of photovoltaic solar panels in the world market, we present the list of the 3 most efficient solar panels (with highest power per square meter):
1. SunPower A-Series A425
Manufacturer: SunPower
Power per square meter: 228 Wp/m2
Efficiency: 22.8%
Power: 425 Wp
Temperature loss coefficient: -0.29%/°C
Solar cell technology: monocrystalline
Number of solar cells: 66
2. Q-Cells Q.Peak-DUO-G5 330
Manufacturer: Q-Cells
Power per square meter: 196 Wp/m2
Efficiency: 20%.
Power: 330 Wp
Temperature loss coefficient: -0.28%/°C
Solar cell technology: monocrystalline
Number of solar cells: 120
3. Panasonic VBHN330SA17
Manufacturer: Panasonic
Power per square meter: 194 Wp/m2
Efficiency: 20%.
Power: 330 Wp
Temperature loss coefficient: -0.258%/°C
Solar cell technology: monocrystalline
Number of solar cells: 96
Important note: data may change at any time. Consult the current technical datasheets or your installer
Avoid shadows and clean the solar panels for best results
The presence of shadow zones on the solar panels reduces the performance of the photovoltaic installation. The solar panel should be well oriented to the sun, avoiding obstructions that promote its shading. Therefore, it should be checked by a qualified professional, taking into account the annual variations in the position of the Sun, during the various seasons of the year.
The cleaning of solar panels is not only for aesthetic reasons. This cleaning should be done regularly and is essential to ensure optimum performance. The dirt on the solar panel means a decrease in energy production and may even cause hot spots that lead to its premature degradation. The solar panels are washed with demineralized water and without detergents, using very soft sponges to avoid scratching its surface. Surface dirt or dust is easily removed by rain, provided that the panels are installed with a minimum angle of inclination.
How to choose the right solar panel?
A professional installer should choose the most suitable photovoltaic panel case by case, taking into account the guarantees offered by their suppliers. SOLVasto always selects the most appropriate solar panels for each project, also ensuring their correct installation and maintenance through a network of professional installers at your disposal.
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