Here is a napkin math-
Bitcoin mining consumes around 91 TWH of electricity each year. [1]
There are 20B internet capable devices out there. Let's assume a conservative estimate of 2 KWh/day (taken from my computer which is on almost 24/7) for a device.
2x20x365 = 14TWH
Bitcoin consumes 6.5x more electricity than all the internet capable devices in the world.
1. https://www.nytimes.com/interactive/2021/09/03/climate/bitco...