Recent discussion tweeted loud by Elon: Bitcoin needs too much electrical power.
If you want to know the truth, read at our Harvard friends journal: https://hbr.org/2021/05/how-much-energy-does-bitcoin-actually-consume
Quote: “… Many journalists and academics talk about Bitcoin’s high “per-transaction energy cost,” but this metric is misleading. The vast majority of Bitcoin’s energy consumption happens during the mining process….”