PV panel degradation [RE-wrenches]

[Doug Pratt]

The figure I remember hearing from the heavily-monitored PVUSA project
in California (and have been repeating to customers for quite some
time), is 0.25% to 0.50% degradation per year for single and poly
crystal.  But I honestly can't put my finger on the data source this
instant...so take it as hearsay. 

Bill, or somebody who worked on PVUSA care to wade in here?

Cheers,
Doug Pratt


-----Original Message-----
From: keith [mailto:kcronin at lava.net] 

Does anyone have historical data on pv panel degradation?  Is it safe to
say it is ½ to 1% per year?

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