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by Ekaros 410 days ago
At least banking I believe if someone went out and said we could save 100 million on energy cost by spending 10 million. They would at least consider doing it, if it looked realistic enough.

On other hand efficiency for BTC mining does not matter. The energy expenditure always approaches the value of mined coins. When efficiency increase same energy is spend just to do more hashes, which are really not useful.