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Re:Japanese company develops a solar cell with record-breaki... by marcosdumay on Thursday March 23, 2017 @11:20AM (#13940491)
Yep, I'm assuming the solar cells are on Earth. Seemed like a good assumption to make.

If you just send them into space with good enough radiators, you'll be able to get 3 9's of efficiency (mid way to 4). But you don't get to reuse the heat waste.

You may be interested on that:

https://en.wikipedia.org/wiki/Matrioshka_brain

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