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Solar Panel installation vs. Solar Shingles. The major difference between solar roof shingles and solar panels is in the installation process. Installers usually need to bolt solar panels onto the roof, which requires drilling through the roof and can violate its warranty.
The second class of solar panels are both the polycrystalline solar panels and the monocrystalline solar panels and these together make up around 95% of solar panels sold in America. Most of these solar panels have 25 year warranties and I have seen many solar panels of these types that are more than 30 years old still working quite well. I don't think there is likely to be any difference between monocrystalline and polycrystalline solar panels when it comes to how long they last.