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The concept of a blockchain has ZERO connection to electricity usage.

Proof of work is the thing that uses the electricity. blockchains can use or not use proof of work.

Here's an example of an electricity-free blockchain : http://www.righto.com/2014/09/mining-bitcoin-with-pencil-and...

I'm not sure if you are saying this to agree or disagree with me but it's worth noting that you are making the same mistake as the parent. in the article you posted, the thing being created is not a block chain, it's a single proof of work solution.

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