Comment Re:Good Thing (Score 1) 195
And do you perhaps think point-of-sale systems and credit/debit card systems or wire transfers require none?
The Bitcoin network uses about $35 worth of energy to process a single transaction. Now, I don't know how much energy a single credit card transaction uses, but given the transaction fees that processing companies charge, I'm willing to bet that it's far, far less than $35 worth.