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A comment on Running Bitcoin uses a small city’s worth of electricity. Parent comment

Re:Running Bitcoin uses a small city’s worth of electricity by kllrnohj on Monday October 02, 2017 @04:25PM (#15387605)
The number calculated for VISA's power/transaction was arrived at by taking the entire power consumption of VISA's data-centers and dividing by the number of transactions.

Far from a perfect number and you're correct it won't cover payment processors, but it's also picking up non-trivial amounts of other stuff since those data centers don't do exclusively payment processing.

But either way you wouldn't count the POS. The POS is still there consuming the same amount of power if you pay with BTC, VISA, or cash.

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Re:Running Bitcoin uses a small city’s worth of electricity by lojack on Monday October 02, 2017 @04:43PM (#15387764)
Another problem with those numbers is that its a two sided transaction, and Visa data centers only account for one side of the transaction. It also doesn't account for any clearing houses external to Visa.
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