This startup is in France with a 44gCO2eq/kWh electricity using 6gCO2eq/kWh nuclear electricity. Here EV emit 80% less than desiel car when you consider their whole life cycle.
My understanding could definitely be off here, but according to the official EU energy report (2018 report, 2016 numbers) [1] France is still consuming about 45% of fossil fuels, while whole Europe is around 70%. Further the energy network is connected throughout Europe and nuclear is great at providing base capacity, but not easy to scale up quickly and at least Germany is completely exiting nuclear fission. That's why we're using coal/gas/oil power plants for that.
So, when we are adding additional energy consumption to the network in the form of (many) EV, it will not charge with nuclear power, but more likely that we need to burn fossil fuel to keep the network up.
