failure rates of PV panels.

[Chris]

Morning everybody,

A simple question (but I suspect the answer may not be simple!): is there data out there on likely/actual failure rates of PV panels over a number of years? Has anybody got this info, or can anybody point me in an appropiate direction?

many thanks

Chris

[Sunking]

Yeah the info is out there, but you will never find it as it is a secret. In my 12 years working with it around 5%.

[Mike90250]

Like most things, the rate varys, maybe 5% the first year, then .1% the next 20 years, then back up to 5%.

[Chris]

failure rates of pv panels

Morning everybody,

A simple question (but I suspect the answer may not be simple!): is there data out there on likely/actual failure rates of PV panels over a number of years? Has anybody got this info, or can anybody point me in an appropiate direction?

many thanks

Chris

derek:

5%: a year/10 years?

Sorry to be a pain

[solar expert]

Why PV Panels Failure ?

Because it has no moving parts (the major source of reliability issues in other types of electrical generating systems), a PV module's operating life is largely determined by the stability and resistance to corrosion of the materials from which it is constructed. Manufacturer's guarantees of up to 20 years indicate the quality of bulk silicon PV modules currently being produced. Nevertheless, there are several failure modes and degradation mechanisms which may reduce the power output or cause the module to fail. Nearly all of these mechanisms are related to water ingress or temperature stress.

[baj-electrical]

Panels fail!

Research carried out suggests solar panels lose efficiency in high temperatures, they like the rays of the sun but not the high temperatures that sometimes go with it. Efficiency loss seems to increase with the temperature increase -solar panels and pv installations.


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