> there is not a certain amount of electricity needed per transaction. Not yet. But that will be increasingly the case in the coming decades as the block subsi

> there is not a certain amount of electricity needed per transaction. Not yet. But that will be increasingly the case in the coming decades as the block subsidy gets repeatedly halved into insignificance. Then the brunt of Bitcoin's security (protection against 51% attacks) will have to be borne by transaction fees.