No Trekkie, you are not having a Blonde moment.
Why is it that PoCo's the world over use HV and EHV transmission and distribution systems?.
Simple, higher voltage equals lower current and that in turn means lower VxI losses, it also means that smaller CSA conductors can be used for a given line length (measured in miles, not feet).
One thing that is often forgotten at a basic level, is the fact that voltage (Or potential difference) is the pressure that drives the electrons through the conductor, the current is merely the speed at which them electrons travel.
This may sound crazy, but more push, less speed!.
One other thing, the use of the letter E as voltage, makes equations hard to read from this end, I suppose it's what you're used to.
I guess it comes back to EMF
