For the newest, most efficient panels, it's about 5 years. | Hacker News

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vilda on May 26, 2012 | parent | context | favorite | on: Germany sets new solar-power record

For the newest, most efficient panels, it's about 5 years.

kitsune_ on May 27, 2012 [–]

Where do you get this number from?

jws on May 27, 2012 | [–]

I don't have a number, but the exotics that are used in space applications may never pay back their production energy. But it takes a lot of extension cords to reach geosynchronous orbit.

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