If you burn gasoline in an ICE car only about 30% of the energy of that gasoline ends up actually going to propelling your vehicle. The rest is mostly lost as w

If you burn gasoline in an ICE car only about 30% of the energy of that gasoline ends up actually going to propelling your vehicle. The rest is mostly lost as waste heat. Burn it in a combined cycle power plant to convert it to electricity and there are still substantial loses to waste heat but much less than when burning it an ICE car. There will be some smaller losses in the power grid and charging infrastructure to get that electricity into your battery, and some small losses in your EV's electric powertrain, but in the end around 40% of the energy of the fuel ends up going toward propelling your vehicle.