This. It isn't clear how these CO2/km numbers were derived. Are they a function of average energy generation source mixes or are they taking into consideration when EVs are charged. Average would be more correct for Bitcoin mining.
PGE has an EV rate plan [1] which charges a lot less during off peak (midnight to 6am) than during the day.
Bitcoin miners would also use electricity at low peak times, unless the cost of hardware dominates the cost of electricity. In practice the mining operations seem to be concentrated near hydro plants in China, where there is an oversupply of carbon neutral electric power.
PGE has an EV rate plan [1] which charges a lot less during off peak (midnight to 6am) than during the day.
[1] https://www.pge.com/en_US/residential/rate-plans/rate-plan-o...