> the current generation of electronic vehicles are a terrible idea... Although perhaps a mere half is not what people would think at first when they just compare tailpipe emissions
The methodolody used by IEA for that chart uses the 2021 global average grid carbon intensity to calculate its electricity generation. If you live in Iceland, Sweeden, UK, Vermont, or similar regions with highly decarbonised grids, the majority of the chart's Electricity co2e isn't generated for that vehicle.
You've got to consider your local average grid carbon intensity, and how that will change across the 20 year lifecycle of the vehicle.
Critics love to also cite the resource cost for manufacturing PV modules or wind turbines to point out that green electricity isn't emissions free either but that ignores the even worse resource costs of fossil power and the continuous environmental damage from mining/drilling the fuel.
All things considered, green energy is better than fossil and EVs are better than ICEs. Of course where we really need to go is reducing individual transport by expanding public transit infrastructure, electrified buses, trams and trains easily beat personal EVs when it comes to resource use per person.
FWIW a bigger concern than the increased energy demand from EVs is the load this puts on the grid infrastructure. But this is also very much true for rooftop PV.
The methodolody used by IEA for that chart uses the 2021 global average grid carbon intensity to calculate its electricity generation. If you live in Iceland, Sweeden, UK, Vermont, or similar regions with highly decarbonised grids, the majority of the chart's Electricity co2e isn't generated for that vehicle.
You've got to consider your local average grid carbon intensity, and how that will change across the 20 year lifecycle of the vehicle.