Wrong. Sorry.False. When the department of energy was tasked with figuring out the real world mileage of a Nissan leaf it calculated average power plant efficiency and transmission loses to get the energy to the EV. The end result was that it got the same mileage as a Chevy Malibu. Since that did not exactly bolster the EV case, they used the EPA methodology: assume energy is converted at 100% efficiency and transmitted at 100% efficiency.