Well earlier in this same thread: > Visa used 189GWh in 2017, worldwide, of which around half was data centres [1]. That handled 111.2 billion transactions, so

Well earlier in this same thread: > Visa used 189GWh in 2017, worldwide, of which around half was data centres [1]. That handled 111.2 billion transactions, so about 1.7Wh per transaction (half for datacentres). Bitcoin used 844670Wh per transaction. That's about 500 000x more energy consumed per transaction by BTC than Visa. I guess it goes without saying that it's much less efficient. For years now I encounter crypto enthusiasts have been suggesting that BTC is an improvement on the energy efficiency of traditional banking, without anything to back up this claim, and ignoring stats like the above over and over again.