Not accounting for the expected changes in the electricity mix inflates the estimated life-cycle emissions of BEVs and slightly increases those of PHEVs.
So they didn’t just take the current electricity mix but also considered current estimates in how that mix develops over the next decades.
The 73% is based on EU electricity, which is 71% low carbon.
Then cars are less efficent then power stations and oil needs to be refined, which itself requires a lot of energy.
Also:
So they didn’t just take the current electricity mix but also considered current estimates in how that mix develops over the next decades.