World TeraHash x Bitcoin Average J/THash = Watts.
273,947,930 x 26.9 = 7.4 GW
Bitcoin Power Consumption = Watts x Hours/year
Power: 64.6 TWh per year
Bitcoin CO₂ = Power x gCO₂/kWh
CO₂ (Scope 2): 64.6 x 217 = 14 Mt per year
14 - 1.6 Mitigation = 12.4 Mt per year