I read an article on this topic on Blockster, it will be interesting to read your comments on how the Ethereum network is gradually moving away from the current proof-of-work (PoW) consensus model to a more energy efficient and secure proof-of-stake (PoS) consensus model.
https://blockster.com/blockdesk/1509_ethereum-039-s-london-upgrade-expected-to-burn-up-to-5b-in-eth-a-year