The worries pertaining towards the implementation of BC may be overcome by establishing layer-2 BC solutions. These work on consensus algorithms like PoS and DPoS which are more energy economical. Ethereum has previously implemented the PoS consensus algorithm and also a layer-3 BC for ethereum can also be getting developed https://holdenymyjs.bloguerosa.com/32101088/detailed-notes-on-role-of-energy-brokers