Yes it is possible.
Does it require much energy of any order? Yes, it does.
The only constraint is that if such a system can be designed, and it is not known on the basis of mathematical models that it is possible, it is not possible to know whether it can be built. It therefore is not possible to construct such a system.
There is more on the subject of “energy efficiency”.
“Energy efficiency” is simply the quantity of energy needed to achieve a given desired result. There is no theoretical restriction on the efficiency of an electrical system. It is the amount of energy needed to perform specific tasks, such as turning one of many lamps on or switching on a lightbulb.
If two lamps are switched on as part of the same operation, they use the same electrical energy, even though they use different sources of energy. This situation may or may not be possible with each type of input; even with two switches on one device. In many instances, it is more efficient to combine the outputs of multiple switches, and thereby improve power efficiency. In the case below, a single switch was used to turn the lightbulb on (light source) and off (bulb).
The question of “energy efficiency” is not related to the efficiency with respect to the efficiency of a given type of device, and is not related to the efficiency of any particular device or component. In fact, this question does not even require understanding of how an electrical system works (which is very important for this discussion, anyway).
Energy Savings Are The Point Of The Debate
As we have discussed, if an electric vehicle is “energy efficient”, not too much has changed. In fact, this situation is unchanged in every case we can think of where electricity is used in a vehicle to operate the electric motor for a vehicle (i.e., for any type of gasoline engine). This is because, if an electric vehicle were to be considered environmentally inefficient, only a tiny fraction of the energy used in this function would actually be released (it would merely be captured in some other form), thereby avoiding the need for fuel, reducing greenhouse gas output, and maintaining high-performance emissions.
So to summarize, not too much has changed for the EV driver. The problem has been that our understanding of exactly where and how the electric vehicles are built (i.e., where electricity is generated or used) has been very limited. This is largely because the electric vehicles have been classified
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