What is the solar panel warranty?

Satunnainen

The solar panel warranty is an important factor to consider when considering the purchase of a solar power system. The warranty can vary depending on the manufacturer and the type of panel, but in general, the warranty for solar panels includes two main parts: the product warranty and the power output warranty.

Product warranty

The product warranty covers physical defects and manufacturing defects in the solar panels. This warranty is usually valid for 10-12 years, but for some manufacturers it can be up to 25 years. The product warranty covers, for example, the following:

  • Material defects
  • Manufacturing errors
  • Panel breakage in normal use

Power yield guarantee

A power yield guarantee guarantees that the solar panels produce a certain amount of electricity for a certain period of time. This warranty is usually longer than the product warranty and can be valid for up to 25-30 years. The power output guarantee defines how much the power of the panels can decrease over the years. In general, the power output guarantee can be, for example:

  • 90% of original power after 10 years
  • 80% of the original power after 25 years

What should be considered?

When comparing solar panel warranties, it is good to pay attention to the following points:

  1. Length of warranty: A longer warranty can provide more peace of mind and better protect your investment.
  2. Warranty coverage: Make sure that the warranty covers both the product warranty and the power output warranty.
  3. Reputation of the manufacturer: Well-known and reliable manufacturers usually offer better guarantees and customer service.
  4. Installation: Some warranties may require panels to be installed by a certified professional.

Summary

The warranty for solar panels is an important part of purchasing a solar power system. In general, the product guarantee for solar panels is 10–12 years and the power output guarantee is 25–30 years. It is important to compare different manufacturers’ warranties and make sure they cover both physical defects and performance degradation over time. This way you can ensure that your investment in solar electricity is secured in the long term.

You can find more information about solar panel warranties from, for example, the following sources:
Aurinkopanelit.fi
Energiatefeksi.fi

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