Sad irony? According to the Cambridge Center for Alternative Finance (CCAF), Bitcoin currently consumes around 110 Terawatt Hours per year — 0.55% of global electricity production, or roughly equivalent to the annual energy draw of small countries like Malaysia or Sweden. This certainly sounds like a lot of energy. But how much energy should a monetary system consume?:

https://hbr.org/2021/05/how-much-energy-does-bitcoin-actually-consume.

Here is more to think about: https://blog.trezor.io/three-myths-about-bitcoins-energy-consumption-ef613a1f3d5