I bought 42 Sunpower X21-335 panels used for about $4700 shipped to my door a fe... | Hacker News

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		zbrozek on April 29, 2022 \| parent \| context \| favorite \| on: I built an open-source, AI-powered solar panel tha... 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.

ncmncm on April 29, 2022 [–]

For the numerically challenged, that is $4700/42 = $112 each.

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

zbrozek on May 4, 2022 | [–]

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

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