Dependig on 4 the Bitcoin energy consumtion would be 600 Twh in 2027, 3600 Twh in 2032 and 21600 Twh in 2037
And same things were said prior the third halving; that in 2020, the difficulty would have risen so much, that the energy consumption would exceed an entire nation. Also, for such variations in consumption, the price must also skyrocket every four years in an economically infeasible manner.
I dont believe POS makes more centralisation.
Not only it brings centralisation, but it can't even
reach consensus.