Recently, my son and I updated our effort to compare the efficiency and “greeness” of a Tesla Model S and a standard, non-plugin Prius. Our latest writeup follows along with the underlying data.
In closing, it should be noted that there are several factors the comparison has ignored. For instance, the analysis does not take account of the impact of transporting the gas or electricity. In the case of electricity, high voltage lines are a convenient and efficient way of moving power. However, the energy loss in charging a Tesla’s batteries can be 10% or more depending on the voltage used at the charger. The analysis also ignores the energy requirements and environmental impact of building the cars and disposing of the waste at the end of the car’s life. Battery powered cars require a good deal more energy to build and disposal of the batteries is an environmental challenge.