Most of the solar panel manufactures warranty their panels for a couple of decades and list the output as being 80% or greater. I think its pretty common knowledge that the panels lose a certain amount of capacity every year, maybe something like 0.7% to 1% or so.
What I'd like to know is if this degradation is a flat rate across the board or if there are environmental variables that come into play. Will solar panels in Florida degrade at the same rate as panels in Michigan? In other words, does environmental operating temperature have any affect?
Does the 0.7% to 1% degradation happen evenly over 20+ years or is there some kind of curve where maybe they do most of their degrading in the first 10 years and then flatten our or something?
Anyone know?
What I'd like to know is if this degradation is a flat rate across the board or if there are environmental variables that come into play. Will solar panels in Florida degrade at the same rate as panels in Michigan? In other words, does environmental operating temperature have any affect?
Does the 0.7% to 1% degradation happen evenly over 20+ years or is there some kind of curve where maybe they do most of their degrading in the first 10 years and then flatten our or something?
Anyone know?
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