Well, let's see
>Bright lights strung on American trees, rooftops and lawns account for 6.63 billion kilowatt hours of electricity consumption every year [1]
>Bitcoin mining consumes around 91 terawatt-hours of electricity annually. [2]
Huh. That's at least the same order of magnitude, at any rate.
[1] https://phys.org/news/2015-12-christmas-energy-entire-countr... [2] https://www.businessinsider.com/bitcoin-mining-electricity-u...