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Solar modules deployed in France in 1992 still provide 75.9% of original output power
(www.pv-magazine.com)
This is a most excellent place for technology news and articles.
I want to add they aren't even that inefficient for 20 year old tech thats impressive
I'm sorry to tell you that the nineties were a little longer ago than that!
You mean I shouldn't wear my baggy pants with a chain for my wallet anymore?