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by zbrozek 1513 days ago
I bought 42 Sunpower X21-335 panels used for about $4700 shipped to my door a few years ago and couldn't be happier. As far as I could tell they weren't actually ever unboxed.
1 comments
ncmncm 1513 days ago
For the numerically challenged, that is $4700/42 = $112 each.

$112/335W = $0.33 per watt. Installed, well under $1.

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zbrozek 1508 days ago
Yeah, the whole system has been fantastic. I'm so glad I did it. DIYing it was also fun.
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