[ArthurBrussee]

If every single transaction in the world was Bitcoin it would still be a _ridicilous_ amount of energy by several orders of magnitude. It is totally, fundamentally, broken

[kerng]

Just to play devil's advocate, how much energy could be saved by closing all bank facilities and backend systems etc, in case they wouldn't be needed anymore?

Would BTC mining consume more or less energy then today's mainstream solutions?

[viraptor]

For a fair comparison, you'd have to match the current bank features first, and they're simply not available in current cryptocurrency.