the PoW protocol involves a high computational power, but if we talk about consumption, other sectors such as banking should be seen, which since its evolution to the technological world its consumption skyrockets. Additionally, it is difficult to obtain for mining, the reduction by reward of mining mine will make many sectors of mining shut down their equipment, while others will benefit, as is the case of Venezuela ... what's more, it is likely that they will dust off those old miners and put them to work.