The overall losses between the power plant and consumers is in the range between 8 and 15%. An electric motor typically is between 85% and 90% efficient. Conventional gasoline vehicles only convert about 17%–21% of the energy stored in gasoline to power at the wheels. State-of-the-art fossil fuel plants at 46% efficiency. Using average values gives a ratio of 46x0.885x0.875/19=1.87 (electric almost twice as efficient). This calculus has not taken into account transport and filling the tank and older fossil fuel plants (maybe they compensate each others).