Saturday, 2 November 2019

PV Solar Panel Generation Deterioration Over Time?

Solar panels are expected to deteriorate over their lifetime and according to the manufacturers the generation of solar power can drop by around 0.5% per year.

What's interesting is that after 8 years this deterioration isn't visible and that the natural variation of the solar electricity generated is a far more obvious factor than the performance of the panels themselves.

Annual generation has varied between 2794 and 3343 kWh per year but this has not been in a straight line and generation can vary by 10% which easily masks a 0.5% variation in panels.

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