What will be the average life of the solar panels?

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The solar panels have a warranty for a period of 25 years, however the projected life is longer. Photovoltaic (PV) modules typically come with 20 year warranties that guarantee that the panels will produce at least 80% of the rated power after 20 years of use.

The general rule of thumb is that panels will degrade by about 1% each year.

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